Preparing release version 3.9.3

add script to generate a example folder for collecting many files

.coveragerc

@@ -1,4 +1,9 @@
 [run]
-source = _pytest,testing
+source = pytest,_pytest,testing/
 parallel = 1
 branch = 1
+
+[paths]
+source = src/
+  .tox/*/lib/python*/site-packages/
+  .tox\*\Lib\site-packages\

.gitattributes

@@ -1 +1 @@
-CHANGELOG    merge=union
+*.bat  text eol=crlf

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,7 +3,7 @@ Thanks for submitting a PR, your contribution is really appreciated!
 Here's a quick checklist that should be present in PRs (you can delete this text from the final description, this is
 just a guideline):
 
-- [ ] Create a new changelog file in the `changelog` folder, with a name like `<ISSUE NUMBER>.<TYPE>.rst`. See [changelog/README.rst](/changelog/README.rst) for details.
+- [ ] Create a new changelog file in the `changelog` folder, with a name like `<ISSUE NUMBER>.<TYPE>.rst`. See [changelog/README.rst](https://github.com/pytest-dev/pytest/blob/master/changelog/README.rst) for details.
 - [ ] Target the `master` branch for bug fixes, documentation updates and trivial changes.
 - [ ] Target the `features` branch for new features and removals/deprecations.
 - [ ] Include documentation when adding new features.

.gitignore

@@ -24,6 +24,7 @@ src/_pytest/_version.py
 .eggs/
 
 doc/*/_build
+doc/*/.doctrees
 build/
 dist/
 *.egg-info
@@ -35,6 +36,8 @@ env/
 .cache
 .pytest_cache
 .coverage
+.coverage.*
+coverage.xml
 .ropeproject
 .idea
 .hypothesis

.pre-commit-config.yaml

@@ -7,26 +7,34 @@ repos:
         args: [--safe, --quiet]
         language_version: python3
 -   repo: https://github.com/asottile/blacken-docs
-    rev: v0.2.0
+    rev: v0.3.0
     hooks:
     -   id: blacken-docs
-        additional_dependencies: [black==18.6b4]
+        additional_dependencies: [black==18.9b0]
         language_version: python3
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v1.3.0
+    rev: v2.0.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
     -   id: check-yaml
     -   id: debug-statements
         exclude: _pytest/debugging.py
+        language_version: python3
     -   id: flake8
--   repo: https://github.com/asottile/pyupgrade
-    rev: v1.2.0
+        language_version: python3
+-   repo: https://github.com/asottile/reorder_python_imports
+    rev: v1.3.2
     hooks:
-    - id: pyupgrade
+    -   id: reorder-python-imports
+        args: ['--application-directories=.:src']
+-   repo: https://github.com/asottile/pyupgrade
+    rev: v1.8.0
+    hooks:
+    -   id: pyupgrade
+        args: [--keep-percent-format]
 -   repo: https://github.com/pre-commit/pygrep-hooks
-    rev: v1.0.0
+    rev: v1.1.0
     hooks:
     -   id: rst-backticks
 -   repo: local
@@ -38,7 +46,8 @@ repos:
         language: python
         additional_dependencies: [pygments, restructuredtext_lint]
     -   id: changelogs-rst
-        name: changelog files must end in .rst
-        entry: ./scripts/fail
-        language: script
-        files: 'changelog/.*(?<!\.rst)$'
+        name: changelog filenames
+        language: fail
+        entry: 'changelog files must be named ####.(feature|bugfix|doc|deprecation|removal|vendor|trivial).rst'
+        exclude: changelog/(\d+\.(feature|bugfix|doc|deprecation|removal|vendor|trivial).rst|README.rst|_template.rst)
+        files: ^changelog/

.travis.yml

@@ -12,21 +12,15 @@ install:
   - pip install --upgrade --pre tox
 env:
   matrix:
-    # note: please use "tox --listenvs" to populate the build matrix below
-    # please remove the linting env in all cases
-    - TOXENV=py27-pexpect
-    - TOXENV=py27-xdist
-    - TOXENV=py27-trial
-    - TOXENV=py27-numpy
-    - TOXENV=py27-pluggymaster
-    - TOXENV=py36-pexpect
-    - TOXENV=py36-xdist
-    - TOXENV=py36-trial
-    - TOXENV=py36-numpy
-    - TOXENV=py36-pluggymaster
+    # Specialized factors for py27.
+    - TOXENV=py27-pexpect,py27-trial,py27-numpy
     - TOXENV=py27-nobyte
-    - TOXENV=doctesting
-    - TOXENV=docs PYTEST_NO_COVERAGE=1
+    - TOXENV=py27-xdist
+    - TOXENV=py27-pluggymaster PYTEST_NO_COVERAGE=1
+    # Specialized factors for py36.
+    - TOXENV=py36-pexpect,py36-trial,py36-numpy
+    - TOXENV=py36-xdist
+    - TOXENV=py36-pluggymaster PYTEST_NO_COVERAGE=1
 
 jobs:
   include:
@@ -53,6 +47,11 @@ jobs:
       env: TOXENV=py37
       before_install:
         - brew update
+        # remove c++ include files because upgrading python as of 2018-10-23, also
+        # attempts to upgrade gcc, and it fails because the include files already
+        # exist. removing the include files is one of the solutions recommended by brew
+        # this workaround might not be necessary in the future
+        - rm '/usr/local/include/c++'
         - brew upgrade python
         - brew unlink python
         - brew link python
@@ -61,11 +60,11 @@ jobs:
       env: TOXENV=py27
     - env: TOXENV=py34
     - env: TOXENV=py36
-    - env: TOXENV=linting PYTEST_NO_COVERAGE=1
+    - env: TOXENV=linting,docs,doctesting PYTEST_NO_COVERAGE=1
 
     - stage: deploy
       python: '3.6'
-      env:
+      env: PYTEST_NO_COVERAGE=1
       install: pip install -U setuptools setuptools_scm
       script: skip
       deploy:
@@ -82,7 +81,9 @@ jobs:
 before_script:
   - |
     if [[ "$PYTEST_NO_COVERAGE" != 1 ]]; then
-      export _PYTEST_TOX_COVERAGE_RUN="env COVERAGE_FILE=$PWD/.coverage COVERAGE_PROCESS_START=$PWD/.coveragerc coverage run --source {envsitepackagesdir}/_pytest/,$PWD/testing -m"
+      export COVERAGE_FILE="$PWD/.coverage"
+      export COVERAGE_PROCESS_START="$PWD/.coveragerc"
+      export _PYTEST_TOX_COVERAGE_RUN="coverage run -m"
       export _PYTEST_TOX_EXTRA_DEP=coverage-enable-subprocess
     fi
 
@@ -92,17 +93,11 @@ after_success:
   - |
     if [[ "$PYTEST_NO_COVERAGE" != 1 ]]; then
       set -e
-      pip install codecov
+      pip install coverage
       coverage combine
-      coverage xml
-      coverage report -m
-      codecov --required -X gcov pycov search -f coverage.xml --flags ${TOXENV//-/ }
-
-      # Coveralls does not support merged reports.
-      if [[ "$TOXENV" = py37 ]]; then
-        pip install coveralls
-        coveralls
-      fi
+      coverage xml --ignore-errors
+      coverage report -m --ignore-errors
+      bash <(curl -s https://codecov.io/bash) -Z -X gcov -X coveragepy -X search -X xcode -X gcovout -X fix -f coverage.xml -F "${TOXENV//-/,},linux"
     fi
 
 notifications:

AUTHORS

@@ -10,9 +10,11 @@ Ahn Ki-Wook
 Alan Velasco
 Alexander Johnson
 Alexei Kozlenok
+Allan Feldman
 Anatoly Bubenkoff
 Anders Hovmöller
 Andras Tim
+Andrea Cimatoribus
 Andreas Zeidler
 Andrzej Ostrowski
 Andy Freeland
@@ -93,6 +95,7 @@ Hui Wang (coldnight)
 Ian Bicking
 Ian Lesperance
 Ionuț Turturică
+Iwan Briquemont
 Jaap Broekhuizen
 Jan Balster
 Janne Vanhala
@@ -118,6 +121,7 @@ Katerina Koukiou
 Kevin Cox
 Kodi B. Arfer
 Kostis Anagnostopoulos
+Kyle Altendorf
 Lawrence Mitchell
 Lee Kamentsky
 Lev Maximov
@@ -178,6 +182,7 @@ Raphael Pierzina
 Raquel Alegre
 Ravi Chandra
 Roberto Polli
+Roland Puntaier
 Romain Dorgueil
 Roman Bolshakov
 Ronny Pfannschmidt
@@ -206,6 +211,7 @@ Thomas Hisch
 Tim Strazny
 Tom Dalton
 Tom Viner
+Tomer Keren
 Trevor Bekolay
 Tyler Goodlet
 Tzu-ping Chung
@@ -222,6 +228,5 @@ Wim Glenn
 Wouter van Ackooy
 Xuan Luong
 Xuecong Liao
+Zac Hatfield-Dodds
 Zoltán Máté
-Roland Puntaier
-Allan Feldman

CHANGELOG.rst

@@ -18,25 +18,338 @@ with advance notice in the **Deprecations** section of releases.
 
 .. towncrier release notes start
 
+pytest 3.9.3 (2018-10-27)
+=========================
+
+Bug Fixes
+---------
+
+- `#4174 <https://github.com/pytest-dev/pytest/issues/4174>`_: Fix "ValueError: Plugin already registered" with conftest plugins via symlink.
+
+
+- `#4181 <https://github.com/pytest-dev/pytest/issues/4181>`_: Handle race condition between creation and deletion of temporary folders.
+
+
+- `#4221 <https://github.com/pytest-dev/pytest/issues/4221>`_: Fix bug where the warning summary at the end of the test session was not showing the test where the warning was originated.
+
+
+- `#4243 <https://github.com/pytest-dev/pytest/issues/4243>`_: Fix regression when ``stacklevel`` for warnings was passed as positional argument on python2.
+
+
+
+Improved Documentation
+----------------------
+
+- `#3851 <https://github.com/pytest-dev/pytest/issues/3851>`_: Add reference to ``empty_parameter_set_mark`` ini option in documentation of ``@pytest.mark.parametrize``
+
+
+
+Trivial/Internal Changes
+------------------------
+
+- `#4028 <https://github.com/pytest-dev/pytest/issues/4028>`_: Revert patching of ``sys.breakpointhook`` since it appears to do nothing.
+
+
+- `#4233 <https://github.com/pytest-dev/pytest/issues/4233>`_: Apply an import sorter (``reorder-python-imports``) to the codebase.
+
+
+- `#4248 <https://github.com/pytest-dev/pytest/issues/4248>`_: Remove use of unnecessary compat shim, six.binary_type
+
+
+pytest 3.9.2 (2018-10-22)
+=========================
+
+Bug Fixes
+---------
+
+- `#2909 <https://github.com/pytest-dev/pytest/issues/2909>`_: Improve error message when a recursive dependency between fixtures is detected.
+
+
+- `#3340 <https://github.com/pytest-dev/pytest/issues/3340>`_: Fix logging messages not shown in hooks ``pytest_sessionstart()`` and ``pytest_sessionfinish()``.
+
+
+- `#3533 <https://github.com/pytest-dev/pytest/issues/3533>`_: Fix unescaped XML raw objects in JUnit report for skipped tests
+
+
+- `#3691 <https://github.com/pytest-dev/pytest/issues/3691>`_: Python 2: safely format warning message about passing unicode strings to ``warnings.warn``, which may cause
+  surprising ``MemoryError`` exception when monkey patching ``warnings.warn`` itself.
+
+
+- `#4026 <https://github.com/pytest-dev/pytest/issues/4026>`_: Improve error message when it is not possible to determine a function's signature.
+
+
+- `#4177 <https://github.com/pytest-dev/pytest/issues/4177>`_: Pin ``setuptools>=40.0`` to support ``py_modules`` in ``setup.cfg``
+
+
+- `#4179 <https://github.com/pytest-dev/pytest/issues/4179>`_: Restore the tmpdir behaviour of symlinking the current test run.
+
+
+- `#4192 <https://github.com/pytest-dev/pytest/issues/4192>`_: Fix filename reported by ``warnings.warn`` when using ``recwarn`` under python2.
+
+
+pytest 3.9.1 (2018-10-16)
+=========================
+
+Features
+--------
+
+- `#4159 <https://github.com/pytest-dev/pytest/issues/4159>`_: For test-suites containing test classes, the information about the subclassed
+  module is now output only if a higher verbosity level is specified (at least
+  "-vv").
+
+
+pytest 3.9.0 (2018-10-15 - not published due to a release automation bug)
+=========================================================================
+
+Deprecations
+------------
+
+- `#3616 <https://github.com/pytest-dev/pytest/issues/3616>`_: The following accesses have been documented as deprecated for years, but are now actually emitting deprecation warnings.
+
+  * Access of ``Module``, ``Function``, ``Class``, ``Instance``, ``File`` and ``Item`` through ``Node`` instances. Now
+    users will this warning::
+
+          usage of Function.Module is deprecated, please use pytest.Module instead
+
+    Users should just ``import pytest`` and access those objects using the ``pytest`` module.
+
+  * ``request.cached_setup``, this was the precursor of the setup/teardown mechanism available to fixtures. You can
+    consult `funcarg comparison section in the docs <https://docs.pytest.org/en/latest/funcarg_compare.html>`_.
+
+  * Using objects named ``"Class"`` as a way to customize the type of nodes that are collected in ``Collector``
+    subclasses has been deprecated. Users instead should use ``pytest_collect_make_item`` to customize node types during
+    collection.
+
+    This issue should affect only advanced plugins who create new collection types, so if you see this warning
+    message please contact the authors so they can change the code.
+
+  * The warning that produces the message below has changed to ``RemovedInPytest4Warning``::
+
+          getfuncargvalue is deprecated, use getfixturevalue
+
+
+- `#3988 <https://github.com/pytest-dev/pytest/issues/3988>`_: Add a Deprecation warning for pytest.ensuretemp as it was deprecated since a while.
+
+
+
+Features
+--------
+
+- `#2293 <https://github.com/pytest-dev/pytest/issues/2293>`_: Improve usage errors messages by hiding internal details which can be distracting and noisy.
+
+  This has the side effect that some error conditions that previously raised generic errors (such as
+  ``ValueError`` for unregistered marks) are now raising ``Failed`` exceptions.
+
+
+- `#3332 <https://github.com/pytest-dev/pytest/issues/3332>`_: Improve the error displayed when a ``conftest.py`` file could not be imported.
+
+  In order to implement this, a new ``chain`` parameter was added to ``ExceptionInfo.getrepr``
+  to show or hide chained tracebacks in Python 3 (defaults to ``True``).
+
+
+- `#3849 <https://github.com/pytest-dev/pytest/issues/3849>`_: Add ``empty_parameter_set_mark=fail_at_collect`` ini option for raising an exception when parametrize collects an empty set.
+
+
+- `#3964 <https://github.com/pytest-dev/pytest/issues/3964>`_: Log messages generated in the collection phase are shown when
+  live-logging is enabled and/or when they are logged to a file.
+
+
+- `#3985 <https://github.com/pytest-dev/pytest/issues/3985>`_: Introduce ``tmp_path`` as a fixture providing a Path object.
+
+
+- `#4013 <https://github.com/pytest-dev/pytest/issues/4013>`_: Deprecation warnings are now shown even if you customize the warnings filters yourself. In the previous version
+  any customization would override pytest's filters and deprecation warnings would fall back to being hidden by default.
+
+
+- `#4073 <https://github.com/pytest-dev/pytest/issues/4073>`_: Allow specification of timeout for ``Testdir.runpytest_subprocess()`` and ``Testdir.run()``.
+
+
+- `#4098 <https://github.com/pytest-dev/pytest/issues/4098>`_: Add returncode argument to pytest.exit() to exit pytest with a specific return code.
+
+
+- `#4102 <https://github.com/pytest-dev/pytest/issues/4102>`_: Reimplement ``pytest.deprecated_call`` using ``pytest.warns`` so it supports the ``match='...'`` keyword argument.
+
+  This has the side effect that ``pytest.deprecated_call`` now raises ``pytest.fail.Exception`` instead
+  of ``AssertionError``.
+
+
+- `#4149 <https://github.com/pytest-dev/pytest/issues/4149>`_: Require setuptools>=30.3 and move most of the metadata to ``setup.cfg``.
+
+
+
+Bug Fixes
+---------
+
+- `#2535 <https://github.com/pytest-dev/pytest/issues/2535>`_: Improve error message when test functions of ``unittest.TestCase`` subclasses use a parametrized fixture.
+
+
+- `#3057 <https://github.com/pytest-dev/pytest/issues/3057>`_: ``request.fixturenames`` now correctly returns the name of fixtures created by ``request.getfixturevalue()``.
+
+
+- `#3946 <https://github.com/pytest-dev/pytest/issues/3946>`_: Warning filters passed as command line options using ``-W`` now take precedence over filters defined in ``ini``
+  configuration files.
+
+
+- `#4066 <https://github.com/pytest-dev/pytest/issues/4066>`_: Fix source reindenting by using ``textwrap.dedent`` directly.
+
+
+- `#4102 <https://github.com/pytest-dev/pytest/issues/4102>`_: ``pytest.warn`` will capture previously-warned warnings in Python 2. Previously they were never raised.
+
+
+- `#4108 <https://github.com/pytest-dev/pytest/issues/4108>`_: Resolve symbolic links for args.
+
+  This fixes running ``pytest tests/test_foo.py::test_bar``, where ``tests``
+  is a symlink to ``project/app/tests``:
+  previously ``project/app/conftest.py`` would be ignored for fixtures then.
+
+
+- `#4132 <https://github.com/pytest-dev/pytest/issues/4132>`_: Fix duplicate printing of internal errors when using ``--pdb``.
+
+
+- `#4135 <https://github.com/pytest-dev/pytest/issues/4135>`_: pathlib based tmpdir cleanup now correctly handles symlinks in the folder.
+
+
+- `#4152 <https://github.com/pytest-dev/pytest/issues/4152>`_: Display the filename when encountering ``SyntaxWarning``.
+
+
+
+Improved Documentation
+----------------------
+
+- `#3713 <https://github.com/pytest-dev/pytest/issues/3713>`_: Update usefixtures documentation to clarify that it can't be used with fixture functions.
+
+
+- `#4058 <https://github.com/pytest-dev/pytest/issues/4058>`_: Update fixture documentation to specify that a fixture can be invoked twice in the scope it's defined for.
+
+
+- `#4064 <https://github.com/pytest-dev/pytest/issues/4064>`_: According to unittest.rst, setUpModule and tearDownModule were not implemented, but it turns out they are. So updated the documentation for unittest.
+
+
+- `#4151 <https://github.com/pytest-dev/pytest/issues/4151>`_: Add tempir testing example to CONTRIBUTING.rst guide
+
+
+
+Trivial/Internal Changes
+------------------------
+
+- `#2293 <https://github.com/pytest-dev/pytest/issues/2293>`_: The internal ``MarkerError`` exception has been removed.
+
+
+- `#3988 <https://github.com/pytest-dev/pytest/issues/3988>`_: Port the implementation of tmpdir to pathlib.
+
+
+- `#4063 <https://github.com/pytest-dev/pytest/issues/4063>`_: Exclude 0.00 second entries from ``--duration`` output unless ``-vv`` is passed on the command-line.
+
+
+- `#4093 <https://github.com/pytest-dev/pytest/issues/4093>`_: Fixed formatting of string literals in internal tests.
+
+
+pytest 3.8.2 (2018-10-02)
+=========================
+
+Deprecations and Removals
+-------------------------
+
+- `#4036 <https://github.com/pytest-dev/pytest/issues/4036>`_: The ``item`` parameter of ``pytest_warning_captured`` hook is now documented as deprecated. We realized only after
+  the ``3.8`` release that this parameter is incompatible with ``pytest-xdist``.
+
+  Our policy is to not deprecate features during bugfix releases, but in this case we believe it makes sense as we are
+  only documenting it as deprecated, without issuing warnings which might potentially break test suites. This will get
+  the word out that hook implementers should not use this parameter at all.
+
+  In a future release ``item`` will always be ``None`` and will emit a proper warning when a hook implementation
+  makes use of it.
+
+
+
+Bug Fixes
+---------
+
+- `#3539 <https://github.com/pytest-dev/pytest/issues/3539>`_: Fix reload on assertion rewritten modules.
+
+
+- `#4034 <https://github.com/pytest-dev/pytest/issues/4034>`_: The ``.user_properties`` attribute of ``TestReport`` objects is a list
+  of (name, value) tuples, but could sometimes be instantiated as a tuple
+  of tuples.  It is now always a list.
+
+
+- `#4039 <https://github.com/pytest-dev/pytest/issues/4039>`_: No longer issue warnings about using ``pytest_plugins`` in non-top-level directories when using ``--pyargs``: the
+  current ``--pyargs`` mechanism is not reliable and might give false negatives.
+
+
+- `#4040 <https://github.com/pytest-dev/pytest/issues/4040>`_: Exclude empty reports for passed tests when ``-rP`` option is used.
+
+
+- `#4051 <https://github.com/pytest-dev/pytest/issues/4051>`_: Improve error message when an invalid Python expression is passed to the ``-m`` option.
+
+
+- `#4056 <https://github.com/pytest-dev/pytest/issues/4056>`_: ``MonkeyPatch.setenv`` and ``MonkeyPatch.delenv`` issue a warning if the environment variable name is not ``str`` on Python 2.
+
+  In Python 2, adding ``unicode`` keys to ``os.environ`` causes problems with ``subprocess`` (and possible other modules),
+  making this a subtle bug specially susceptible when used with ``from __future__ import unicode_literals``.
+
+
+
+Improved Documentation
+----------------------
+
+- `#3928 <https://github.com/pytest-dev/pytest/issues/3928>`_: Add possible values for fixture scope to docs.
+
+
+pytest 3.8.1 (2018-09-22)
+=========================
+
+Bug Fixes
+---------
+
+- `#3286 <https://github.com/pytest-dev/pytest/issues/3286>`_: ``.pytest_cache`` directory is now automatically ignored by Git. Users who would like to contribute a solution for other SCMs please consult/comment on this issue.
+
+
+- `#3749 <https://github.com/pytest-dev/pytest/issues/3749>`_: Fix the following error during collection of tests inside packages::
+
+      TypeError: object of type 'Package' has no len()
+
+
+- `#3941 <https://github.com/pytest-dev/pytest/issues/3941>`_: Fix bug where indirect parametrization would consider the scope of all fixtures used by the test function to determine the parametrization scope, and not only the scope of the fixtures being parametrized.
+
+
+- `#3973 <https://github.com/pytest-dev/pytest/issues/3973>`_: Fix crash of the assertion rewriter if a test changed the current working directory without restoring it afterwards.
+
+
+- `#3998 <https://github.com/pytest-dev/pytest/issues/3998>`_: Fix issue that prevented some caplog properties (for example ``record_tuples``) from being available when entering the debugger with ``--pdb``.
+
+
+- `#3999 <https://github.com/pytest-dev/pytest/issues/3999>`_: Fix ``UnicodeDecodeError`` in python2.x when a class returns a non-ascii binary ``__repr__`` in an assertion which also contains non-ascii text.
+
+
+
+Improved Documentation
+----------------------
+
+- `#3996 <https://github.com/pytest-dev/pytest/issues/3996>`_: New `Deprecations and Removals <https://docs.pytest.org/en/latest/deprecations.html>`_ page shows all currently
+  deprecated features, the rationale to do so, and alternatives to update your code. It also list features removed
+  from pytest in past major releases to help those with ancient pytest versions to upgrade.
+
+
+
+Trivial/Internal Changes
+------------------------
+
+- `#3955 <https://github.com/pytest-dev/pytest/issues/3955>`_: Improve pre-commit detection for changelog filenames
+
+
+- `#3975 <https://github.com/pytest-dev/pytest/issues/3975>`_: Remove legacy code around im_func as that was python2 only
+
+
 pytest 3.8.0 (2018-09-05)
 =========================
 
 Deprecations and Removals
 -------------------------
 
-- `#2452 <https://github.com/pytest-dev/pytest/issues/2452>`_: ``Config.warn`` has been deprecated, it should be replaced by calls to the standard ``warnings.warn``.
-
-  ``Node.warn`` now supports two signatures:
-
-  * ``node.warn(PytestWarning("some message"))``: is now the recommended way to call this function. The warning
-    instance must be a ``PytestWarning`` or subclass  instance.
-
-  * ``node.warn("CI", "some message")``: this code/message form is now deprecated and should be converted to
-    the warning instance form above.
-
-  ``RemovedInPytest4Warning`` and ``PytestExperimentalApiWarning`` are now part of the public API and should be accessed
-  using ``pytest.RemovedInPytest4Warning`` and ``pytest.PytestExperimentalApiWarning``.
-
+- `#2452 <https://github.com/pytest-dev/pytest/issues/2452>`_: ``Config.warn`` and ``Node.warn`` have been
+  deprecated, see `<https://docs.pytest.org/en/latest/deprecations.html#config-warn-and-node-warn>`_ for rationale and
+  examples.
 
 - `#3936 <https://github.com/pytest-dev/pytest/issues/3936>`_: ``@pytest.mark.filterwarnings`` second parameter is no longer regex-escaped,
   making it possible to actually use regular expressions to check the warning message.
@@ -63,7 +376,10 @@ Features
   more info.
 
 
-- `#3784 <https://github.com/pytest-dev/pytest/issues/3784>`_: Add option to disable plugin auto-loading.
+- `#3251 <https://github.com/pytest-dev/pytest/issues/3251>`_: Warnings are now captured and displayed during test collection.
+
+
+- `#3784 <https://github.com/pytest-dev/pytest/issues/3784>`_: ``PYTEST_DISABLE_PLUGIN_AUTOLOAD`` environment variable disables plugin auto-loading when set.
 
 
 - `#3829 <https://github.com/pytest-dev/pytest/issues/3829>`_: Added the ``count`` option to ``console_output_style`` to enable displaying the progress as a count instead of a percentage.
@@ -250,15 +566,10 @@ pytest 3.7.0 (2018-07-30)
 Deprecations and Removals
 -------------------------
 
-- `#2639 <https://github.com/pytest-dev/pytest/issues/2639>`_: ``pytest_namespace`` has been deprecated.
-
-  See the documentation for ``pytest_namespace`` hook for suggestions on how to deal
-  with this in plugins which use this functionality.
+- `#2639 <https://github.com/pytest-dev/pytest/issues/2639>`_: ``pytest_namespace`` has been `deprecated <https://docs.pytest.org/en/latest/deprecations.html#pytest-namespace>`_.
 
 
-- `#3661 <https://github.com/pytest-dev/pytest/issues/3661>`_: Calling a fixture function directly, as opposed to request them in a test function, now issues a ``RemovedInPytest4Warning``. It will be changed into an error in pytest ``4.0``.
-
-  This is a great source of confusion to new users, which will often call the fixture functions and request them from test functions interchangeably, which breaks the fixture resolution model.
+- `#3661 <https://github.com/pytest-dev/pytest/issues/3661>`_: Calling a fixture function directly, as opposed to request them in a test function, now issues a ``RemovedInPytest4Warning``. See `the documentation for rationale and examples <https://docs.pytest.org/en/latest/deprecations.html#calling-fixtures-directly>`_.
 
 
 
@@ -620,7 +931,7 @@ Deprecations and Removals
   <https://github.com/pytest-dev/pytest/issues/2770>`_)
 
 - Defining ``pytest_plugins`` is now deprecated in non-top-level conftest.py
-  files, because they "leak" to the entire directory tree. (`#3084
+  files, because they "leak" to the entire directory tree. `See the docs <https://docs.pytest.org/en/latest/deprecations.html#pytest-plugins-in-non-top-level-conftest-files>`_ for the rationale behind this decision (`#3084
   <https://github.com/pytest-dev/pytest/issues/3084>`_)
 
 

CONTRIBUTING.rst

@@ -280,6 +280,47 @@ Here is a simple overview, with pytest-specific bits:
     base: features        # if it's a feature
 
 
+Writing Tests
+----------------------------
+
+Writing tests for plugins or for pytest itself is often done using the `testdir fixture <https://docs.pytest.org/en/latest/reference.html#testdir>`_, as a "black-box" test.
+
+For example, to ensure a simple test passes you can write:
+
+.. code-block:: python
+
+    def test_true_assertion(testdir):
+        testdir.makepyfile(
+            """
+            def test_foo():
+                assert True
+        """
+        )
+        result = testdir.runpytest()
+        result.assert_outcomes(failed=0, passed=1)
+
+
+Alternatively, it is possible to make checks based on the actual output of the termal using
+*glob-like* expressions:
+
+.. code-block:: python
+
+    def test_true_assertion(testdir):
+        testdir.makepyfile(
+            """
+            def test_foo():
+                assert False
+        """
+        )
+        result = testdir.runpytest()
+        result.stdout.fnmatch_lines(["*assert False*", "*1 failed*"])
+
+When choosing a file where to write a new test, take a look at the existing files and see if there's
+one file which looks like a good fit. For example, a regression test about a bug in the ``--lf`` option
+should go into ``test_cacheprovider.py``, given that this option is implemented in ``cacheprovider.py``.
+If in doubt, go ahead and open a PR with your best guess and we can discuss this over the code.
+
+
 Joining the Development Team
 ----------------------------
 

README.rst

@@ -15,8 +15,9 @@
 .. image:: https://img.shields.io/pypi/pyversions/pytest.svg
     :target: https://pypi.org/project/pytest/
 
-.. image:: https://img.shields.io/coveralls/pytest-dev/pytest/master.svg
-    :target: https://coveralls.io/r/pytest-dev/pytest
+.. image:: https://codecov.io/gh/pytest-dev/pytest/branch/master/graph/badge.svg
+    :target: https://codecov.io/gh/pytest-dev/pytest
+    :alt: Code coverage Status
 
 .. image:: https://travis-ci.org/pytest-dev/pytest.svg?branch=master
     :target: https://travis-ci.org/pytest-dev/pytest
@@ -25,7 +26,7 @@
     :target: https://ci.appveyor.com/project/pytestbot/pytest
 
 .. image:: https://img.shields.io/badge/code%20style-black-000000.svg
-  :target: https://github.com/ambv/black
+    :target: https://github.com/ambv/black
 
 .. image:: https://www.codetriage.com/pytest-dev/pytest/badges/users.svg
     :target: https://www.codetriage.com/pytest-dev/pytest

appveyor.yml

@@ -1,35 +1,29 @@
 environment:
-  COVERALLS_REPO_TOKEN:
-    secure: 2NJ5Ct55cHJ9WEg3xbSqCuv0rdgzzb6pnzOIG5OkMbTndw3wOBrXntWFoQrXiMFi
-    # this is pytest's token in coveralls.io, encrypted
-    # using pytestbot account as detailed here:
-    # https://www.appveyor.com/docs/build-configuration#secure-variables
-
   matrix:
-  # coveralls is not in the default env list
-  - TOXENV: "coveralls"
-  # note: please use "tox --listenvs" to populate the build matrix below
-  - TOXENV: "linting"
   - TOXENV: "py27"
-  - TOXENV: "py34"
-  - TOXENV: "py35"
-  - TOXENV: "py36"
   - TOXENV: "py37"
+    PYTEST_NO_COVERAGE: "1"
+  - TOXENV: "linting,docs,doctesting"
+  - TOXENV: "py36"
+  - TOXENV: "py35"
+  - TOXENV: "py34"
   - TOXENV: "pypy"
-  - TOXENV: "py27-pexpect"
-  - TOXENV: "py27-xdist"
-  - TOXENV: "py27-trial"
-  - TOXENV: "py27-numpy"
+    PYTEST_NO_COVERAGE: "1"
+  # Specialized factors for py27.
+  - TOXENV: "py27-trial,py27-numpy,py27-nobyte"
   - TOXENV: "py27-pluggymaster"
-  - TOXENV: "py36-pexpect"
-  - TOXENV: "py36-xdist"
-  - TOXENV: "py36-trial"
-  - TOXENV: "py36-numpy"
+    PYTEST_NO_COVERAGE: "1"
+  - TOXENV: "py27-xdist"
+  # Specialized factors for py36.
+  - TOXENV: "py36-trial,py36-numpy"
   - TOXENV: "py36-pluggymaster"
-  - TOXENV: "py27-nobyte"
-  - TOXENV: "doctesting"
+    PYTEST_NO_COVERAGE: "1"
   - TOXENV: "py36-freeze"
-  - TOXENV: "docs"
+    PYTEST_NO_COVERAGE: "1"
+  - TOXENV: "py36-xdist"
+
+matrix:
+  fast_finish: true
 
 install:
   - echo Installed Pythons
@@ -37,12 +31,19 @@ install:
 
   - if "%TOXENV%" == "pypy" call scripts\install-pypy.bat
 
+  - C:\Python36\python -m pip install --upgrade pip
   - C:\Python36\python -m pip install --upgrade --pre tox
 
 build: false  # Not a C# project, build stuff at the test step instead.
 
+before_test:
+  - call scripts\prepare-coverage.bat
+
 test_script:
-  - call scripts\call-tox.bat
+  - C:\Python36\python -m tox
+
+on_success:
+  - call scripts\upload-coverage.bat
 
 cache:
   - '%LOCALAPPDATA%\pip\cache'

bench/bench_argcomplete.py

@@ -1,10 +1,7 @@
-
-
 # 10000 iterations, just for relative comparison
 #                      2.7.5     3.3.2
 # FilesCompleter       75.1109   69.2116
 # FastFilesCompleter    0.7383    1.0760
-
 import timeit
 
 imports = [

bench/manyparam.py

@@ -1,4 +1,3 @@
-
 import pytest
 
 

bench/skip.py

@@ -1,4 +1,5 @@
 from six.moves import range
+
 import pytest
 
 

changelog/3251.feture.rst

@@ -1 +0,0 @@
-Warnings are now captured and displayed during test collection.

changelog/README.rst

@@ -14,7 +14,8 @@ Each file should be named like ``<ISSUE>.<TYPE>.rst``, where
 * ``feature``: new user facing features, like new command-line options and new behavior.
 * ``bugfix``: fixes a reported bug.
 * ``doc``: documentation improvement, like rewording an entire session or adding missing docs.
-* ``removal``: feature deprecation or removal.
+* ``deprecation``: feature deprecation.
+* ``removal``: feature removal.
 * ``vendor``: changes in packages vendored in pytest.
 * ``trivial``: fixing a small typo or internal change that might be noteworthy.
 

doc/en/_themes/flask_theme_support.py

@@ -1,19 +1,17 @@
 # flasky extensions.  flasky pygments style based on tango style
 from pygments.style import Style
-from pygments.token import (
-    Keyword,
-    Name,
-    Comment,
-    String,
-    Error,
-    Number,
-    Operator,
-    Generic,
-    Whitespace,
-    Punctuation,
-    Other,
-    Literal,
-)
+from pygments.token import Comment
+from pygments.token import Error
+from pygments.token import Generic
+from pygments.token import Keyword
+from pygments.token import Literal
+from pygments.token import Name
+from pygments.token import Number
+from pygments.token import Operator
+from pygments.token import Other
+from pygments.token import Punctuation
+from pygments.token import String
+from pygments.token import Whitespace
 
 
 class FlaskyStyle(Style):

doc/en/announce/index.rst

@@ -6,6 +6,12 @@ Release announcements
    :maxdepth: 2
 
 
+   release-3.9.3
+   release-3.9.2
+   release-3.9.1
+   release-3.9.0
+   release-3.8.2
+   release-3.8.1
    release-3.8.0
    release-3.7.4
    release-3.7.3

doc/en/announce/release-3.6.3.rst

@@ -20,8 +20,7 @@ Thanks to all who contributed to this release, among them:
 * Ondřej Súkup
 * Ronny Pfannschmidt
 * T.E.A de Souza
-* Victor
-* victor
+* Victor Maryama
 
 
 Happy testing,

doc/en/announce/release-3.7.3.rst

@@ -22,10 +22,9 @@ Thanks to all who contributed to this release, among them:
 * Ronny Pfannschmidt
 * Sankt Petersbug
 * Tyler Richard
-* Victor
+* Victor Maryama
 * Vlad Shcherbina
 * turturica
-* victor
 * wim glenn
 
 

doc/en/announce/release-3.8.1.rst

@@ -0,0 +1,25 @@
+pytest-3.8.1
+=======================================
+
+pytest 3.8.1 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Ankit Goel
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Maximilian Albert
+* Ronny Pfannschmidt
+* William Jamir Silva
+* wim glenn
+
+
+Happy testing,
+The pytest Development Team

doc/en/announce/release-3.8.2.rst

@@ -0,0 +1,28 @@
+pytest-3.8.2
+=======================================
+
+pytest 3.8.2 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Ankit Goel
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Denis Otkidach
+* Harry Percival
+* Jeffrey Rackauckas
+* Jose Carlos Menezes
+* Ronny Pfannschmidt
+* Zac-HD
+* iwanb
+
+
+Happy testing,
+The pytest Development Team

doc/en/announce/release-3.9.0.rst

@@ -0,0 +1,43 @@
+pytest-3.9.0
+=======================================
+
+The pytest team is proud to announce the 3.9.0 release!
+
+pytest is a mature Python testing tool with more than a 2000 tests
+against itself, passing on many different interpreters and platforms.
+
+This release contains a number of bugs fixes and improvements, so users are encouraged
+to take a look at the CHANGELOG:
+
+    https://docs.pytest.org/en/latest/changelog.html
+
+For complete documentation, please visit:
+
+    https://docs.pytest.org/en/latest/
+
+As usual, you can upgrade from pypi via:
+
+    pip install -U pytest
+
+Thanks to all who contributed to this release, among them:
+
+* Andrea Cimatoribus
+* Ankit Goel
+* Anthony Sottile
+* Ben Eyal
+* Bruno Oliveira
+* Daniel Hahler
+* Jeffrey Rackauckas
+* Jose Carlos Menezes
+* Kyle Altendorf
+* Niklas JQ
+* Palash Chatterjee
+* Ronny Pfannschmidt
+* Thomas Hess
+* Thomas Hisch
+* Tomer Keren
+* Victor Maryama
+
+
+Happy testing,
+The Pytest Development Team

doc/en/announce/release-3.9.1.rst

@@ -0,0 +1,20 @@
+pytest-3.9.1
+=======================================
+
+pytest 3.9.1 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Bruno Oliveira
+* Ronny Pfannschmidt
+* Thomas Hisch
+
+
+Happy testing,
+The pytest Development Team

doc/en/announce/release-3.9.2.rst

@@ -0,0 +1,23 @@
+pytest-3.9.2
+=======================================
+
+pytest 3.9.2 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Ankit Goel
+* Anthony Sottile
+* Bruno Oliveira
+* Ronny Pfannschmidt
+* Vincent Barbaresi
+* ykantor
+
+
+Happy testing,
+The pytest Development Team

doc/en/announce/release-3.9.3.rst

@@ -0,0 +1,24 @@
+pytest-3.9.3
+=======================================
+
+pytest 3.9.3 has just been released to PyPI.
+
+This is a bug-fix release, being a drop-in replacement. To upgrade::
+
+  pip install --upgrade pytest
+
+The full changelog is available at https://docs.pytest.org/en/latest/changelog.html.
+
+Thanks to all who contributed to this release, among them:
+
+* Andreas Profous
+* Ankit Goel
+* Anthony Sottile
+* Bruno Oliveira
+* Daniel Hahler
+* Jon Dufresne
+* Ronny Pfannschmidt
+
+
+Happy testing,
+The pytest Development Team

doc/en/assert.rst

@@ -264,8 +264,12 @@ Advanced assertion introspection
 Reporting details about a failing assertion is achieved by rewriting assert
 statements before they are run.  Rewritten assert statements put introspection
 information into the assertion failure message.  ``pytest`` only rewrites test
-modules directly discovered by its test collection process, so asserts in
-supporting modules which are not themselves test modules will not be rewritten.
+modules directly discovered by its test collection process, so **asserts in
+supporting modules which are not themselves test modules will not be rewritten**.
+
+You can manually enable assertion rewriting for an imported module by calling
+`register_assert_rewrite <https://docs.pytest.org/en/latest/writing_plugins.html#assertion-rewriting>`_
+before you import it (a good place to do that is in ``conftest.py``).
 
 .. note::
 

doc/en/backwards-compatibility.rst

@@ -7,14 +7,16 @@ Keeping backwards compatibility has a very high priority in the pytest project.
 
 With the pytest 3.0 release we introduced a clear communication scheme for when we will actually remove the old busted joint and politely ask you to use the new hotness instead, while giving you enough time to adjust your tests or raise concerns if there are valid reasons to keep deprecated functionality around.
 
-To communicate changes we are already issuing deprecation warnings, but they are not displayed by default. In pytest 3.0 we changed the default setting so that pytest deprecation warnings are displayed if not explicitly silenced (with ``--disable-pytest-warnings``).
+To communicate changes we issue deprecation warnings using a custom warning hierarchy (see :ref:`internal-warnings`). These warnings may be suppressed using the standard means: ``-W`` command-line flag or ``filterwarnings`` ini options (see :ref:`warnings`), but we suggest to use these sparingly and temporarily, and heed the warnings when possible.
 
-We will only remove deprecated functionality in major releases (e.g. if we deprecate something in 3.0 we will remove it in 4.0), and keep it around for at least two minor releases (e.g. if we deprecate something in 3.9 and 4.0 is the next release, we will not remove it in 4.0 but in 5.0).
+We will only start the removal of deprecated functionality in major releases (e.g. if we deprecate something in 3.0 we will start to remove it in 4.0), and keep it around for at least two minor releases (e.g. if we deprecate something in 3.9 and 4.0 is the next release, we start to remove it in 5.0, not in 4.0).
+
+When the deprecation expires (e.g. 4.0 is released), we won't remove the deprecated functionality immediately, but will use the standard warning filters to turn them into **errors** by default. This approach makes it explicit that removal is imminent, and still gives you time to turn the deprecated feature into a warning instead of an error so it can be dealt with in your own time. In the next minor release (e.g. 4.1), the feature will be effectively removed.
 
 
 Deprecation Roadmap
 -------------------
 
-We track deprecation and removal of features using milestones and the `deprecation <https://github.com/pytest-dev/pytest/issues?q=label%3A%22type%3A+deprecation%22>`_ and `removal <https://github.com/pytest-dev/pytest/labels/type%3A%20removal>`_ labels on GitHub.
+Features currently deprecated and removed in previous releases can be found in :ref:`deprecations`.
 
-Following our deprecation policy, after starting issuing deprecation warnings we keep features for *at least* two minor versions before considering removal.
+We track future deprecation and removal of features using milestones and the `deprecation <https://github.com/pytest-dev/pytest/issues?q=label%3A%22type%3A+deprecation%22>`_ and `removal <https://github.com/pytest-dev/pytest/labels/type%3A%20removal>`_ labels on GitHub.

doc/en/builtin.rst

@@ -75,7 +75,7 @@ For information about fixtures, see :ref:`fixtures`. To see a complete list of a
     caplog
         Access and control log capturing.
 
-        Captured logs are available through the following methods::
+        Captured logs are available through the following properties/methods::
 
         * caplog.text            -> string containing formatted log output
         * caplog.records         -> list of logging.LogRecord instances
@@ -104,7 +104,9 @@ For information about fixtures, see :ref:`fixtures`. To see a complete list of a
         See http://docs.python.org/library/warnings.html for information
         on warning categories.
     tmpdir_factory
-        Return a TempdirFactory instance for the test session.
+        Return a :class:`_pytest.tmpdir.TempdirFactory` instance for the test session.
+    tmp_path_factory
+        Return a :class:`_pytest.tmpdir.TempPathFactory` instance for the test session.
     tmpdir
         Return a temporary directory path object
         which is unique to each test function invocation,
@@ -113,6 +115,16 @@ For information about fixtures, see :ref:`fixtures`. To see a complete list of a
         path object.
 
         .. _`py.path.local`: https://py.readthedocs.io/en/latest/path.html
+    tmp_path
+        Return a temporary directory path object
+        which is unique to each test function invocation,
+        created as a sub directory of the base temporary
+        directory.  The returned object is a :class:`pathlib.Path`
+        object.
+
+        .. note::
+
+            in python < 3.6 this is a pathlib2.Path
 
     no tests ran in 0.12 seconds
 

doc/en/conf.py

@@ -10,17 +10,15 @@
 #
 # All configuration values have a default; values that are commented out
 # serve to show the default.
-
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The full version, including alpha/beta/rc tags.
 # The short X.Y version.
-
+import datetime
 import os
 import sys
-import datetime
 
 from _pytest import __version__ as version
 

doc/en/contents.rst

@@ -39,6 +39,7 @@ Full pytest documentation
    bash-completion
 
    backwards-compatibility
+   deprecations
    historical-notes
    license
    contributing

doc/en/customize.rst

@@ -32,7 +32,7 @@ Here's a summary what ``pytest`` uses ``rootdir`` for:
   class name, function name and parametrization (if any).
 
 * Is used by plugins as a stable location to store project/test run specific information;
-  for example, the internal :ref:`cache <cache>` plugin creates a ``.cache`` subdirectory
+  for example, the internal :ref:`cache <cache>` plugin creates a ``.pytest_cache`` subdirectory
   in ``rootdir`` to store its cross-test run state.
 
 Important to emphasize that ``rootdir`` is **NOT** used to modify ``sys.path``/``PYTHONPATH`` or

doc/en/deprecations.rst

@@ -0,0 +1,386 @@
+.. _deprecations:
+
+Deprecations and Removals
+=========================
+
+This page lists all pytest features that are currently deprecated or have been removed in past major releases.
+The objective is to give users a clear rationale why a certain feature has been removed, and what alternatives
+should be used instead.
+
+Deprecated Features
+-------------------
+
+Below is a complete list of all pytest features which are considered deprecated. Using those features will issue
+:class:`_pytest.warning_types.PytestWarning` or subclasses, which can be filtered using
+:ref:`standard warning filters <warnings>`.
+
+Internal classes accessed through ``Node``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.9
+
+Access of ``Module``, ``Function``, ``Class``, ``Instance``, ``File`` and ``Item`` through ``Node`` instances now issue
+this warning::
+
+    usage of Function.Module is deprecated, please use pytest.Module instead
+
+Users should just ``import pytest`` and access those objects using the ``pytest`` module.
+
+This has been documented as deprecated for years, but only now we are actually emitting deprecation warnings.
+
+``cached_setup``
+~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.9
+
+``request.cached_setup`` was the precursor of the setup/teardown mechanism available to fixtures.
+
+Example:
+
+.. code-block:: python
+
+    @pytest.fixture
+    def db_session():
+        return request.cached_setup(
+            setup=Session.create, teardown=lambda session: session.close(), scope="module"
+        )
+
+This should be updated to make use of standard fixture mechanisms:
+
+.. code-block:: python
+
+    @pytest.fixture(scope="module")
+    def db_session():
+        session = Session.create()
+        yield session
+        session.close()
+
+
+You can consult `funcarg comparison section in the docs <https://docs.pytest.org/en/latest/funcarg_compare.html>`_ for
+more information.
+
+This has been documented as deprecated for years, but only now we are actually emitting deprecation warnings.
+
+
+Using ``Class`` in custom Collectors
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.9
+
+Using objects named ``"Class"`` as a way to customize the type of nodes that are collected in ``Collector``
+subclasses has been deprecated. Users instead should use ``pytest_pycollect_makeitem`` to customize node types during
+collection.
+
+This issue should affect only advanced plugins who create new collection types, so if you see this warning
+message please contact the authors so they can change the code.
+
+
+``Config.warn`` and ``Node.warn``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.8
+
+Those methods were part of the internal pytest warnings system, but since ``3.8`` pytest is using the builtin warning
+system for its own warnings, so those two functions are now deprecated.
+
+``Config.warn`` should be replaced by calls to the standard ``warnings.warn``, example:
+
+.. code-block:: python
+
+    config.warn("C1", "some warning")
+
+Becomes:
+
+.. code-block:: python
+
+    warnings.warn(pytest.PytestWarning("some warning"))
+
+``Node.warn`` now supports two signatures:
+
+* ``node.warn(PytestWarning("some message"))``: is now the **recommended** way to call this function.
+  The warning instance must be a PytestWarning or subclass.
+
+* ``node.warn("CI", "some message")``: this code/message form is now **deprecated** and should be converted to the warning instance form above.
+
+
+``pytest_namespace``
+~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.7
+
+This hook is deprecated because it greatly complicates the pytest internals regarding configuration and initialization, making some
+bug fixes and refactorings impossible.
+
+Example of usage:
+
+.. code-block:: python
+
+    class MySymbol:
+        ...
+
+
+    def pytest_namespace():
+        return {"my_symbol": MySymbol()}
+
+
+Plugin authors relying on this hook should instead require that users now import the plugin modules directly (with an appropriate public API).
+
+As a stopgap measure, plugin authors may still inject their names into pytest's namespace, usually during ``pytest_configure``:
+
+.. code-block:: python
+
+    import pytest
+
+
+    def pytest_configure():
+        pytest.my_symbol = MySymbol()
+
+
+
+Calling fixtures directly
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.7
+
+Calling a fixture function directly, as opposed to request them in a test function, is deprecated.
+
+For example:
+
+.. code-block:: python
+
+    @pytest.fixture
+    def cell():
+        return ...
+
+
+    @pytest.fixture
+    def full_cell():
+        cell = cell()
+        cell.make_full()
+        return cell
+
+This is a great source of confusion to new users, which will often call the fixture functions and request them from test functions interchangeably, which breaks the fixture resolution model.
+
+In those cases just request the function directly in the dependent fixture:
+
+.. code-block:: python
+
+    @pytest.fixture
+    def cell():
+        return ...
+
+
+    @pytest.fixture
+    def full_cell(cell):
+        cell.make_full()
+        return cell
+
+``Node.get_marker``
+~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.6
+
+As part of a large :ref:`marker-revamp`, :meth:`_pytest.nodes.Node.get_marker` is deprecated. See
+:ref:`the documentation <update marker code>` on tips on how to update your code.
+
+
+record_xml_property
+~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.5
+
+The ``record_xml_property`` fixture is now deprecated in favor of the more generic ``record_property``, which
+can be used by other consumers (for example ``pytest-html``) to obtain custom information about the test run.
+
+This is just a matter of renaming the fixture as the API is the same:
+
+.. code-block:: python
+
+    def test_foo(record_xml_property):
+        ...
+
+Change to:
+
+.. code-block:: python
+
+    def test_foo(record_property):
+        ...
+
+pytest_plugins in non-top-level conftest files
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.5
+
+Defining ``pytest_plugins`` is now deprecated in non-top-level conftest.py
+files because they will activate referenced plugins *globally*, which is surprising because for all other pytest
+features ``conftest.py`` files are only *active* for tests at or below it.
+
+Metafunc.addcall
+~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.3
+
+:meth:`_pytest.python.Metafunc.addcall` was a precursor to the current parametrized mechanism. Users should use
+:meth:`_pytest.python.Metafunc.parametrize` instead.
+
+marks in ``pytest.mark.parametrize``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.2
+
+Applying marks to values of a ``pytest.mark.parametrize`` call is now deprecated. For example:
+
+.. code-block:: python
+
+    @pytest.mark.parametrize(
+        "a, b", [(3, 9), pytest.mark.xfail(reason="flaky")(6, 36), (10, 100)]
+    )
+    def test_foo(a, b):
+        ...
+
+This code applies the ``pytest.mark.xfail(reason="flaky")`` mark to the ``(6, 36)`` value of the above parametrization
+call.
+
+This was considered hard to read and understand, and also its implementation presented problems to the code preventing
+further internal improvements in the marks architecture.
+
+To update the code, use ``pytest.param``:
+
+.. code-block:: python
+
+    @pytest.mark.parametrize(
+        "a, b",
+        [(3, 9), pytest.param((6, 36), marks=pytest.mark.xfail(reason="flaky")), (10, 100)],
+    )
+    def test_foo(a, b):
+        ...
+
+
+
+Passing command-line string to ``pytest.main()``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.0
+
+Passing a command-line string to ``pytest.main()`` is deprecated:
+
+.. code-block:: python
+
+    pytest.main("-v -s")
+
+Pass a list instead:
+
+.. code-block:: python
+
+    pytest.main(["-v", "-s"])
+
+
+By passing a string, users expect that pytest will interpret that command-line using the shell rules they are working
+on (for example ``bash`` or ``Powershell``), but this is very hard/impossible to do in a portable way.
+
+
+``yield`` tests
+~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.0
+
+pytest supports ``yield``-style tests, where a test function actually ``yield`` functions and values
+that are then turned into proper test methods. Example:
+
+.. code-block:: python
+
+    def check(x, y):
+        assert x ** x == y
+
+
+    def test_squared():
+        yield check, 2, 4
+        yield check, 3, 9
+
+This would result into two actual test functions being generated.
+
+This form of test function doesn't support fixtures properly, and users should switch to ``pytest.mark.parametrize``:
+
+.. code-block:: python
+
+    @pytest.mark.parametrize("x, y", [(2, 4), (3, 9)])
+    def test_squared(x, y):
+        assert x ** x == y
+
+
+``pytest_funcarg__`` prefix
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.0
+
+In very early pytest versions fixtures could be defined using the ``pytest_funcarg__`` prefix:
+
+.. code-block:: python
+
+    def pytest_funcarg__data():
+        return SomeData()
+
+Switch over to the ``@pytest.fixture`` decorator:
+
+.. code-block:: python
+
+    @pytest.fixture
+    def data():
+        return SomeData()
+
+[pytest] section in setup.cfg files
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.0
+
+``[pytest]`` sections in ``setup.cfg`` files should now be named ``[tool:pytest]``
+to avoid conflicts with other distutils commands.
+
+Result log (``--result-log``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 3.0
+
+The ``--resultlog`` command line option has been deprecated: it is little used
+and there are more modern and better alternatives, for example `pytest-tap <https://tappy.readthedocs.io/en/latest/>`_.
+
+Removed Features
+----------------
+
+As stated in our :ref:`backwards-compatibility` policy, deprecated features are removed only in major releases after
+an appropriate period of deprecation has passed.
+
+
+Reinterpretation mode (``--assert=reinterp``)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+*Removed in version 3.0.*
+
+Reinterpretation mode has now been removed and only plain and rewrite
+mode are available, consequently the ``--assert=reinterp`` option is
+no longer available.  This also means files imported from plugins or
+``conftest.py`` will not benefit from improved assertions by
+default, you should use ``pytest.register_assert_rewrite()`` to
+explicitly turn on assertion rewriting for those files.
+
+Removed command-line options
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+*Removed in version 3.0.*
+
+The following deprecated commandline options were removed:
+
+* ``--genscript``: no longer supported;
+* ``--no-assert``: use ``--assert=plain`` instead;
+* ``--nomagic``: use ``--assert=plain`` instead;
+* ``--report``: use ``-r`` instead;
+
+py.test-X* entry points
+~~~~~~~~~~~~~~~~~~~~~~~
+
+*Removed in version 3.0.*
+
+Removed all ``py.test-X*`` entry points. The versioned, suffixed entry points
+were never documented and a leftover from a pre-virtualenv era. These entry
+points also created broken entry points in wheels, so removing them also
+removes a source of confusion for users.

doc/en/example/assertion/failure_demo.py

@@ -1,7 +1,8 @@
-from pytest import raises
-import _pytest._code
 import six
 
+import _pytest._code
+from pytest import raises
+
 
 def otherfunc(a, b):
     assert a == b
@@ -247,7 +248,7 @@ class TestCustomAssertMsg(object):
         b = 2
         assert (
             A.a == b
-        ), "A.a appears not to be b\n" "or does not appear to be b\none of those"
+        ), "A.a appears not to be b\nor does not appear to be b\none of those"
 
     def test_custom_repr(self):
         class JSON(object):

doc/en/example/assertion/global_testmodule_config/conftest.py

@@ -1,6 +1,7 @@
-import pytest
 import py
 
+import pytest
+
 mydir = py.path.local(__file__).dirpath()
 
 

doc/en/example/assertion/global_testmodule_config/test_hello_world.py

@@ -1,4 +1,3 @@
-
 hello = "world"
 
 

doc/en/example/assertion/test_failures.py

@@ -1,4 +1,3 @@
-
 import py
 
 failure_demo = py.path.local(__file__).dirpath("failure_demo.py")

doc/en/example/costlysetup/conftest.py

@@ -1,4 +1,3 @@
-
 import pytest
 
 

doc/en/example/multipython.py

@@ -5,6 +5,7 @@ serialization via the pickle module.
 import textwrap
 
 import py
+
 import pytest
 
 pythonlist = ["python2.7", "python3.4", "python3.5"]

doc/en/example/nonpython/conftest.py

@@ -1,5 +1,4 @@
 # content of conftest.py
-
 import pytest
 
 

doc/en/example/parametrize.rst

@@ -413,7 +413,7 @@ Running it results in some skips if we don't have all the python interpreters in
    . $ pytest -rs -q multipython.py
    ...sss...sssssssss...sss...                                          [100%]
    ========================= short test summary info ==========================
-   SKIP [15] $REGENDOC_TMPDIR/CWD/multipython.py:29: 'python3.4' not found
+   SKIP [15] $REGENDOC_TMPDIR/CWD/multipython.py:30: 'python3.4' not found
    12 passed, 15 skipped in 0.12 seconds
 
 Indirect parametrization of optional implementations/imports

doc/en/example/py2py3/conftest.py

@@ -1,4 +1,5 @@
 import sys
+
 import pytest
 
 py3 = sys.version_info[0] >= 3

doc/en/example/py2py3/test_py2.py

@@ -1,6 +1,5 @@
-
 def test_exception_syntax():
     try:
-        0/0
+        0 / 0
     except ZeroDivisionError, e:
-        pass
+        assert e

doc/en/example/py2py3/test_py3.py

@@ -2,4 +2,4 @@ def test_exception_syntax():
     try:
         0 / 0
     except ZeroDivisionError as e:
-        pass
+        assert e

doc/en/example/reportingdemo.rst

@@ -26,7 +26,7 @@ get on the terminal - we are working on that)::
     >       assert param1 * 2 < param2
     E       assert (3 * 2) < 6
 
-    failure_demo.py:19: AssertionError
+    failure_demo.py:20: AssertionError
     _________________________ TestFailing.test_simple __________________________
 
     self = <failure_demo.TestFailing object at 0xdeadbeef>
@@ -43,7 +43,7 @@ get on the terminal - we are working on that)::
     E        +  where 42 = <function TestFailing.test_simple.<locals>.f at 0xdeadbeef>()
     E        +  and   43 = <function TestFailing.test_simple.<locals>.g at 0xdeadbeef>()
 
-    failure_demo.py:35: AssertionError
+    failure_demo.py:36: AssertionError
     ____________________ TestFailing.test_simple_multiline _____________________
 
     self = <failure_demo.TestFailing object at 0xdeadbeef>
@@ -51,7 +51,7 @@ get on the terminal - we are working on that)::
         def test_simple_multiline(self):
     >       otherfunc_multi(42, 6 * 9)
 
-    failure_demo.py:38:
+    failure_demo.py:39:
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 
     a = 42, b = 54
@@ -60,7 +60,7 @@ get on the terminal - we are working on that)::
     >       assert a == b
     E       assert 42 == 54
 
-    failure_demo.py:15: AssertionError
+    failure_demo.py:16: AssertionError
     ___________________________ TestFailing.test_not ___________________________
 
     self = <failure_demo.TestFailing object at 0xdeadbeef>
@@ -73,7 +73,7 @@ get on the terminal - we are working on that)::
     E       assert not 42
     E        +  where 42 = <function TestFailing.test_not.<locals>.f at 0xdeadbeef>()
 
-    failure_demo.py:44: AssertionError
+    failure_demo.py:45: AssertionError
     _________________ TestSpecialisedExplanations.test_eq_text _________________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -84,7 +84,7 @@ get on the terminal - we are working on that)::
     E         - spam
     E         + eggs
 
-    failure_demo.py:49: AssertionError
+    failure_demo.py:50: AssertionError
     _____________ TestSpecialisedExplanations.test_eq_similar_text _____________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -97,7 +97,7 @@ get on the terminal - we are working on that)::
     E         + foo 2 bar
     E         ?     ^
 
-    failure_demo.py:52: AssertionError
+    failure_demo.py:53: AssertionError
     ____________ TestSpecialisedExplanations.test_eq_multiline_text ____________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -110,7 +110,7 @@ get on the terminal - we are working on that)::
     E         + eggs
     E           bar
 
-    failure_demo.py:55: AssertionError
+    failure_demo.py:56: AssertionError
     ______________ TestSpecialisedExplanations.test_eq_long_text _______________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -127,7 +127,7 @@ get on the terminal - we are working on that)::
     E         + 1111111111b222222222
     E         ?           ^
 
-    failure_demo.py:60: AssertionError
+    failure_demo.py:61: AssertionError
     _________ TestSpecialisedExplanations.test_eq_long_text_multiline __________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -147,7 +147,7 @@ get on the terminal - we are working on that)::
     E
     E         ...Full output truncated (7 lines hidden), use '-vv' to show
 
-    failure_demo.py:65: AssertionError
+    failure_demo.py:66: AssertionError
     _________________ TestSpecialisedExplanations.test_eq_list _________________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -158,7 +158,7 @@ get on the terminal - we are working on that)::
     E         At index 2 diff: 2 != 3
     E         Use -v to get the full diff
 
-    failure_demo.py:68: AssertionError
+    failure_demo.py:69: AssertionError
     ______________ TestSpecialisedExplanations.test_eq_list_long _______________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -171,7 +171,7 @@ get on the terminal - we are working on that)::
     E         At index 100 diff: 1 != 2
     E         Use -v to get the full diff
 
-    failure_demo.py:73: AssertionError
+    failure_demo.py:74: AssertionError
     _________________ TestSpecialisedExplanations.test_eq_dict _________________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -189,7 +189,7 @@ get on the terminal - we are working on that)::
     E
     E         ...Full output truncated (2 lines hidden), use '-vv' to show
 
-    failure_demo.py:76: AssertionError
+    failure_demo.py:77: AssertionError
     _________________ TestSpecialisedExplanations.test_eq_set __________________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -207,7 +207,7 @@ get on the terminal - we are working on that)::
     E
     E         ...Full output truncated (2 lines hidden), use '-vv' to show
 
-    failure_demo.py:79: AssertionError
+    failure_demo.py:80: AssertionError
     _____________ TestSpecialisedExplanations.test_eq_longer_list ______________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -218,7 +218,7 @@ get on the terminal - we are working on that)::
     E         Right contains more items, first extra item: 3
     E         Use -v to get the full diff
 
-    failure_demo.py:82: AssertionError
+    failure_demo.py:83: AssertionError
     _________________ TestSpecialisedExplanations.test_in_list _________________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -227,7 +227,7 @@ get on the terminal - we are working on that)::
     >       assert 1 in [0, 2, 3, 4, 5]
     E       assert 1 in [0, 2, 3, 4, 5]
 
-    failure_demo.py:85: AssertionError
+    failure_demo.py:86: AssertionError
     __________ TestSpecialisedExplanations.test_not_in_text_multiline __________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -246,7 +246,7 @@ get on the terminal - we are working on that)::
     E
     E         ...Full output truncated (2 lines hidden), use '-vv' to show
 
-    failure_demo.py:89: AssertionError
+    failure_demo.py:90: AssertionError
     ___________ TestSpecialisedExplanations.test_not_in_text_single ____________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -259,7 +259,7 @@ get on the terminal - we are working on that)::
     E           single foo line
     E         ?        +++
 
-    failure_demo.py:93: AssertionError
+    failure_demo.py:94: AssertionError
     _________ TestSpecialisedExplanations.test_not_in_text_single_long _________
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -272,7 +272,7 @@ get on the terminal - we are working on that)::
     E           head head foo tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
     E         ?           +++
 
-    failure_demo.py:97: AssertionError
+    failure_demo.py:98: AssertionError
     ______ TestSpecialisedExplanations.test_not_in_text_single_long_term _______
 
     self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
@@ -285,7 +285,7 @@ get on the terminal - we are working on that)::
     E           head head fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffftail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
     E         ?           ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
-    failure_demo.py:101: AssertionError
+    failure_demo.py:102: AssertionError
     ______________________________ test_attribute ______________________________
 
         def test_attribute():
@@ -297,7 +297,7 @@ get on the terminal - we are working on that)::
     E       assert 1 == 2
     E        +  where 1 = <failure_demo.test_attribute.<locals>.Foo object at 0xdeadbeef>.b
 
-    failure_demo.py:109: AssertionError
+    failure_demo.py:110: AssertionError
     _________________________ test_attribute_instance __________________________
 
         def test_attribute_instance():
@@ -309,7 +309,7 @@ get on the terminal - we are working on that)::
     E        +  where 1 = <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef>.b
     E        +    where <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef> = <class 'failure_demo.test_attribute_instance.<locals>.Foo'>()
 
-    failure_demo.py:116: AssertionError
+    failure_demo.py:117: AssertionError
     __________________________ test_attribute_failure __________________________
 
         def test_attribute_failure():
@@ -322,7 +322,7 @@ get on the terminal - we are working on that)::
             i = Foo()
     >       assert i.b == 2
 
-    failure_demo.py:127:
+    failure_demo.py:128:
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 
     self = <failure_demo.test_attribute_failure.<locals>.Foo object at 0xdeadbeef>
@@ -331,7 +331,7 @@ get on the terminal - we are working on that)::
     >       raise Exception("Failed to get attrib")
     E       Exception: Failed to get attrib
 
-    failure_demo.py:122: Exception
+    failure_demo.py:123: Exception
     _________________________ test_attribute_multiple __________________________
 
         def test_attribute_multiple():
@@ -348,7 +348,7 @@ get on the terminal - we are working on that)::
     E        +  and   2 = <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef>.b
     E        +    where <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef> = <class 'failure_demo.test_attribute_multiple.<locals>.Bar'>()
 
-    failure_demo.py:137: AssertionError
+    failure_demo.py:138: AssertionError
     __________________________ TestRaises.test_raises __________________________
 
     self = <failure_demo.TestRaises object at 0xdeadbeef>
@@ -357,7 +357,7 @@ get on the terminal - we are working on that)::
             s = "qwe"  # NOQA
     >       raises(TypeError, "int(s)")
 
-    failure_demo.py:147:
+    failure_demo.py:148:
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 
     >   int(s)
@@ -372,7 +372,7 @@ get on the terminal - we are working on that)::
     >       raises(IOError, "int('3')")
     E       Failed: DID NOT RAISE <class 'OSError'>
 
-    failure_demo.py:150: Failed
+    failure_demo.py:151: Failed
     __________________________ TestRaises.test_raise ___________________________
 
     self = <failure_demo.TestRaises object at 0xdeadbeef>
@@ -381,7 +381,7 @@ get on the terminal - we are working on that)::
     >       raise ValueError("demo error")
     E       ValueError: demo error
 
-    failure_demo.py:153: ValueError
+    failure_demo.py:154: ValueError
     ________________________ TestRaises.test_tupleerror ________________________
 
     self = <failure_demo.TestRaises object at 0xdeadbeef>
@@ -390,7 +390,7 @@ get on the terminal - we are working on that)::
     >       a, b = [1]  # NOQA
     E       ValueError: not enough values to unpack (expected 2, got 1)
 
-    failure_demo.py:156: ValueError
+    failure_demo.py:157: ValueError
     ______ TestRaises.test_reinterpret_fails_with_print_for_the_fun_of_it ______
 
     self = <failure_demo.TestRaises object at 0xdeadbeef>
@@ -401,7 +401,7 @@ get on the terminal - we are working on that)::
     >       a, b = items.pop()
     E       TypeError: 'int' object is not iterable
 
-    failure_demo.py:161: TypeError
+    failure_demo.py:162: TypeError
     --------------------------- Captured stdout call ---------------------------
     items is [1, 2, 3]
     ________________________ TestRaises.test_some_error ________________________
@@ -412,7 +412,7 @@ get on the terminal - we are working on that)::
     >       if namenotexi:  # NOQA
     E       NameError: name 'namenotexi' is not defined
 
-    failure_demo.py:164: NameError
+    failure_demo.py:165: NameError
     ____________________ test_dynamic_compile_shows_nicely _____________________
 
         def test_dynamic_compile_shows_nicely():
@@ -427,14 +427,14 @@ get on the terminal - we are working on that)::
             sys.modules[name] = module
     >       module.foo()
 
-    failure_demo.py:182:
+    failure_demo.py:183:
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 
         def foo():
     >    assert 1 == 0
     E    AssertionError
 
-    <2-codegen 'abc-123' $REGENDOC_TMPDIR/assertion/failure_demo.py:179>:2: AssertionError
+    <2-codegen 'abc-123' $REGENDOC_TMPDIR/assertion/failure_demo.py:180>:2: AssertionError
     ____________________ TestMoreErrors.test_complex_error _____________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -448,9 +448,9 @@ get on the terminal - we are working on that)::
 
     >       somefunc(f(), g())
 
-    failure_demo.py:193:
+    failure_demo.py:194:
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
-    failure_demo.py:11: in somefunc
+    failure_demo.py:12: in somefunc
         otherfunc(x, y)
     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
 
@@ -460,7 +460,7 @@ get on the terminal - we are working on that)::
     >       assert a == b
     E       assert 44 == 43
 
-    failure_demo.py:7: AssertionError
+    failure_demo.py:8: AssertionError
     ___________________ TestMoreErrors.test_z1_unpack_error ____________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -470,7 +470,7 @@ get on the terminal - we are working on that)::
     >       a, b = items
     E       ValueError: not enough values to unpack (expected 2, got 0)
 
-    failure_demo.py:197: ValueError
+    failure_demo.py:198: ValueError
     ____________________ TestMoreErrors.test_z2_type_error _____________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -480,7 +480,7 @@ get on the terminal - we are working on that)::
     >       a, b = items
     E       TypeError: 'int' object is not iterable
 
-    failure_demo.py:201: TypeError
+    failure_demo.py:202: TypeError
     ______________________ TestMoreErrors.test_startswith ______________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -493,7 +493,7 @@ get on the terminal - we are working on that)::
     E        +  where False = <built-in method startswith of str object at 0xdeadbeef>('456')
     E        +    where <built-in method startswith of str object at 0xdeadbeef> = '123'.startswith
 
-    failure_demo.py:206: AssertionError
+    failure_demo.py:207: AssertionError
     __________________ TestMoreErrors.test_startswith_nested ___________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -512,7 +512,7 @@ get on the terminal - we are working on that)::
     E        +      where '123' = <function TestMoreErrors.test_startswith_nested.<locals>.f at 0xdeadbeef>()
     E        +    and   '456' = <function TestMoreErrors.test_startswith_nested.<locals>.g at 0xdeadbeef>()
 
-    failure_demo.py:215: AssertionError
+    failure_demo.py:216: AssertionError
     _____________________ TestMoreErrors.test_global_func ______________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -523,7 +523,7 @@ get on the terminal - we are working on that)::
     E        +  where False = isinstance(43, float)
     E        +    where 43 = globf(42)
 
-    failure_demo.py:218: AssertionError
+    failure_demo.py:219: AssertionError
     _______________________ TestMoreErrors.test_instance _______________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -534,7 +534,7 @@ get on the terminal - we are working on that)::
     E       assert 42 != 42
     E        +  where 42 = <failure_demo.TestMoreErrors object at 0xdeadbeef>.x
 
-    failure_demo.py:222: AssertionError
+    failure_demo.py:223: AssertionError
     _______________________ TestMoreErrors.test_compare ________________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -544,7 +544,7 @@ get on the terminal - we are working on that)::
     E       assert 11 < 5
     E        +  where 11 = globf(10)
 
-    failure_demo.py:225: AssertionError
+    failure_demo.py:226: AssertionError
     _____________________ TestMoreErrors.test_try_finally ______________________
 
     self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
@@ -555,7 +555,7 @@ get on the terminal - we are working on that)::
     >           assert x == 0
     E           assert 1 == 0
 
-    failure_demo.py:230: AssertionError
+    failure_demo.py:231: AssertionError
     ___________________ TestCustomAssertMsg.test_single_line ___________________
 
     self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
@@ -570,7 +570,7 @@ get on the terminal - we are working on that)::
     E       assert 1 == 2
     E        +  where 1 = <class 'failure_demo.TestCustomAssertMsg.test_single_line.<locals>.A'>.a
 
-    failure_demo.py:241: AssertionError
+    failure_demo.py:242: AssertionError
     ____________________ TestCustomAssertMsg.test_multiline ____________________
 
     self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
@@ -582,14 +582,14 @@ get on the terminal - we are working on that)::
             b = 2
     >       assert (
                 A.a == b
-            ), "A.a appears not to be b\n" "or does not appear to be b\none of those"
+            ), "A.a appears not to be b\nor does not appear to be b\none of those"
     E       AssertionError: A.a appears not to be b
     E         or does not appear to be b
     E         one of those
     E       assert 1 == 2
     E        +  where 1 = <class 'failure_demo.TestCustomAssertMsg.test_multiline.<locals>.A'>.a
 
-    failure_demo.py:248: AssertionError
+    failure_demo.py:249: AssertionError
     ___________________ TestCustomAssertMsg.test_custom_repr ___________________
 
     self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
@@ -611,11 +611,12 @@ get on the terminal - we are working on that)::
     E       assert 1 == 2
     E        +  where 1 = This is JSON\n{\n  'foo': 'bar'\n}.a
 
-    failure_demo.py:261: AssertionError
+    failure_demo.py:262: AssertionError
     ============================= warnings summary =============================
-    $REGENDOC_TMPDIR/assertion/failure_demo.py:24: RemovedInPytest4Warning: Metafunc.addcall is deprecated and scheduled to be removed in pytest 4.0.
-    Please use Metafunc.parametrize instead.
-      metafunc.addcall(funcargs=dict(param1=3, param2=6))
+    failure_demo.py:25
+      $REGENDOC_TMPDIR/assertion/failure_demo.py:25: RemovedInPytest4Warning: Metafunc.addcall is deprecated and scheduled to be removed in pytest 4.0.
+      Please use Metafunc.parametrize instead.
+        metafunc.addcall(funcargs=dict(param1=3, param2=6))
 
     -- Docs: https://docs.pytest.org/en/latest/warnings.html
     ================== 42 failed, 1 warnings in 0.12 seconds ===================

doc/en/example/simple.rst

@@ -574,7 +574,7 @@ We can run this::
     file $REGENDOC_TMPDIR/b/test_error.py, line 1
       def test_root(db):  # no db here, will error out
     E       fixture 'db' not found
-    >       available fixtures: cache, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_xml_attribute, record_xml_property, recwarn, tmpdir, tmpdir_factory
+    >       available fixtures: cache, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_xml_attribute, record_xml_property, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
     >       use 'pytest --fixtures [testpath]' for help on them.
 
     $REGENDOC_TMPDIR/b/test_error.py:1
@@ -852,6 +852,8 @@ In that order.
     can be changed between releases (even bug fixes) so it shouldn't be relied on for scripting
     or automation.
 
+.. _freezing-pytest:
+
 Freezing pytest
 ---------------
 

doc/en/fixture.rst

@@ -171,6 +171,7 @@ to cause the decorated ``smtp_connection`` fixture function to only be invoked
 once per test *module* (the default is to invoke once per test *function*).
 Multiple test functions in a test module will thus
 each receive the same ``smtp_connection`` fixture instance, thus saving time.
+Possible values for ``scope`` are: ``function``, ``class``, ``module``, ``package`` or ``session``.
 
 The next example puts the fixture function into a separate ``conftest.py`` file
 so that tests from multiple test modules in the directory can
@@ -258,6 +259,11 @@ instance, you can simply declare it:
 
 Finally, the ``class`` scope will invoke the fixture once per test *class*.
 
+.. note::
+
+    Pytest will only cache one instance of a fixture at a time.
+    This means that when using a parametrized fixture, pytest may invoke a fixture more than once in the given scope.
+
 
 ``package`` scope (experimental)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

doc/en/getting-started.rst

@@ -1,7 +1,7 @@
 Installation and Getting Started
 ===================================
 
-**Pythons**: Python 2.7, 3.4, 3.5, 3.6, Jython, PyPy-2.3
+**Pythons**: Python 2.7, 3.4, 3.5, 3.6, 3.7, Jython, PyPy-2.3
 
 **Platforms**: Unix/Posix and Windows
 

doc/en/historical-notes.rst

@@ -175,3 +175,13 @@ Previous to version 2.4 to set a break point in code one needed to use ``pytest.
 This is no longer needed and one can use the native ``import pdb;pdb.set_trace()`` call directly.
 
 For more details see :ref:`breakpoints`.
+
+"compat" properties
+-------------------
+
+.. deprecated:: 3.9
+
+Access of ``Module``, ``Function``, ``Class``, ``Instance``, ``File`` and ``Item`` through ``Node`` instances have long
+been documented as deprecated, but started to emit warnings from pytest ``3.9`` and onward.
+
+Users should just ``import pytest`` and access those objects using the ``pytest`` module.

doc/en/mark.rst

@@ -52,6 +52,8 @@ should add ``--strict`` to ``addopts``:
         serial
 
 
+.. _marker-revamp:
+
 Marker revamp and iteration
 ---------------------------
 

doc/en/parametrize.rst

@@ -114,6 +114,10 @@ Let's run this::
 The one parameter set which caused a failure previously now
 shows up as an "xfailed (expected to fail)" test.
 
+In case the values provided to ``parametrize`` result in an empty list - for
+example, if they're dynamically generated by some function - the behaviour of
+pytest is defined by the :confval:`empty_parameter_set_mark` option.
+
 To get all combinations of multiple parametrized arguments you can stack
 ``parametrize`` decorators::
 

doc/en/plugins.rst

@@ -69,17 +69,15 @@ You may also discover more plugins through a `pytest- pypi.python.org search`_.
 Requiring/Loading plugins in a test module or conftest file
 -----------------------------------------------------------
 
-You can require plugins in a test module or a conftest file like this::
+You can require plugins in a test module or a conftest file like this:
 
-    pytest_plugins = "myapp.testsupport.myplugin",
+.. code-block:: python
+
+    pytest_plugins = ("myapp.testsupport.myplugin",)
 
 When the test module or conftest plugin is loaded the specified plugins
 will be loaded as well.
 
-    pytest_plugins = "myapp.testsupport.myplugin"
-
-which will import the specified module as a ``pytest`` plugin.
-
 .. note::
     Requiring plugins using a ``pytest_plugins`` variable in non-root
     ``conftest.py`` files is deprecated. See

doc/en/reference.rst

@@ -84,6 +84,12 @@ pytest.warns
 .. autofunction:: pytest.warns(expected_warning: Exception, [match])
     :with:
 
+pytest.freeze_includes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+**Tutorial**: :ref:`freezing-pytest`.
+
+.. autofunction:: pytest.freeze_includes
 
 .. _`marks ref`:
 
@@ -172,7 +178,7 @@ Mark a test function as using the given fixture names.
 
 .. warning::
 
-    This mark can be used with *test functions* only, having no affect when applied
+    This mark has no effect when applied
     to a **fixture** function.
 
 .. py:function:: pytest.mark.usefixtures(*names)
@@ -976,6 +982,7 @@ passed multiple times. The expected format is ``name=value``. For example::
 
     * ``skip`` skips tests with an empty parameterset (default)
     * ``xfail`` marks tests with an empty parameterset as xfail(run=False)
+    * ``fail_at_collect`` raises an exception if parametrize collects an empty parameter set
 
     .. code-block:: ini
 
@@ -1256,15 +1263,25 @@ passed multiple times. The expected format is ``name=value``. For example::
 
    One or more Glob-style file patterns determining which python files
    are considered as test modules. Search for multiple glob patterns by
-   adding a space between patterns::
+   adding a space between patterns:
 
    .. code-block:: ini
 
         [pytest]
         python_files = test_*.py check_*.py example_*.py
 
-   By default, pytest will consider any file matching with ``test_*.py``
-   and ``*_test.py`` globs as a test module.
+   Or one per line:
+
+   .. code-block:: ini
+
+        [pytest]
+        python_files =
+            test_*.py
+            check_*.py
+            example_*.py
+
+   By default, files matching ``test_*.py`` and ``*_test.py`` will be considered
+   test modules.
 
 
 .. confval:: python_functions

doc/en/skipping.rst

@@ -58,18 +58,20 @@ by calling the ``pytest.skip(reason)`` function:
         if not valid_config():
             pytest.skip("unsupported configuration")
 
+The imperative method is useful when it is not possible to evaluate the skip condition
+during import time.
+
 It is also possible to skip the whole module using
 ``pytest.skip(reason, allow_module_level=True)`` at the module level:
 
 .. code-block:: python
 
+    import sys
     import pytest
 
-    if not pytest.config.getoption("--custom-flag"):
-        pytest.skip("--custom-flag is missing, skipping tests", allow_module_level=True)
+    if not sys.platform.startswith("win"):
+        pytest.skip("skipping windows-only tests", allow_module_level=True)
 
-The imperative method is useful when it is not possible to evaluate the skip condition
-during import time.
 
 **Reference**: :ref:`pytest.mark.skip ref`
 

doc/en/tmpdir.rst

@@ -5,6 +5,76 @@
 Temporary directories and files
 ================================================
 
+The ``tmp_path`` fixture
+------------------------
+
+.. versionadded:: 3.9
+
+
+You can use the ``tmp_path`` fixture which will
+provide a temporary directory unique to the test invocation,
+created in the `base temporary directory`_.
+
+``tmp_path`` is a ``pathlib/pathlib2.Path`` object. Here is an example test usage:
+
+.. code-block:: python
+
+    # content of test_tmp_path.py
+    import os
+
+    CONTENT = u"content"
+
+
+    def test_create_file(tmp_path):
+        d = tmp_path / "sub"
+        d.mkdir()
+        p = d / "hello.txt"
+        p.write_text(CONTENT)
+        assert p.read_text() == CONTENT
+        assert len(list(tmp_path.iterdir())) == 1
+        assert 0
+
+Running this would result in a passed test except for the last
+``assert 0`` line which we use to look at values::
+
+    $ pytest test_tmp_path.py
+    =========================== test session starts ============================
+    platform linux -- Python 3.x.y, pytest-3.x.y, py-1.x.y, pluggy-0.x.y
+    rootdir: $REGENDOC_TMPDIR, inifile:
+    collected 1 item
+
+    test_tmp_path.py F                                                   [100%]
+
+    ================================= FAILURES =================================
+    _____________________________ test_create_file _____________________________
+
+    tmp_path = PosixPath('PYTEST_TMPDIR/test_create_file0')
+
+        def test_create_file(tmp_path):
+            d = tmp_path / "sub"
+            d.mkdir()
+            p = d / "hello.txt"
+            p.write_text(CONTENT)
+            assert p.read_text() == CONTENT
+            assert len(list(tmp_path.iterdir())) == 1
+    >       assert 0
+    E       assert 0
+
+    test_tmp_path.py:13: AssertionError
+    ========================= 1 failed in 0.12 seconds =========================
+
+The ``tmp_path_factory`` fixture
+--------------------------------
+
+.. versionadded:: 3.9
+
+
+The ``tmp_path_factory`` is a session-scoped fixture which can be used
+to create arbitrary temporary directories from any other fixture or test.
+
+It is intended to replace ``tmpdir_factory``, and returns :class:`pathlib.Path` instances.
+
+
 The 'tmpdir' fixture
 --------------------
 

doc/en/unittest.rst

@@ -22,16 +22,15 @@ Almost all ``unittest`` features are supported:
 
 * ``@unittest.skip`` style decorators;
 * ``setUp/tearDown``;
-* ``setUpClass/tearDownClass()``;
+* ``setUpClass/tearDownClass``;
+* ``setUpModule/tearDownModule``;
 
 .. _`load_tests protocol`: https://docs.python.org/3/library/unittest.html#load-tests-protocol
-.. _`setUpModule/tearDownModule`: https://docs.python.org/3/library/unittest.html#setupmodule-and-teardownmodule
 .. _`subtests`: https://docs.python.org/3/library/unittest.html#distinguishing-test-iterations-using-subtests
 
 Up to this point pytest does not have support for the following features:
 
 * `load_tests protocol`_;
-* `setUpModule/tearDownModule`_;
 * `subtests`_;
 
 Benefits out of the box

doc/en/usage.rst

@@ -255,7 +255,7 @@ Pytest supports the use of ``breakpoint()`` with the following behaviours:
 
  - When ``breakpoint()`` is called and ``PYTHONBREAKPOINT`` is set to the default value, pytest will use the custom internal PDB trace UI instead of the system default ``Pdb``.
  - When tests are complete, the system will default back to the system ``Pdb`` trace UI.
- - If ``--pdb`` is called on execution of pytest, the custom internal Pdb trace UI is used on ``bothbreakpoint()`` and failed tests/unhandled exceptions.
+ - If ``--pdb`` is called on execution of pytest, the custom internal Pdb trace UI is used on both ``breakpoint()`` and failed tests/unhandled exceptions.
  - If ``--pdbcls`` is used, the custom class debugger will be executed when a test fails (as expected within existing behaviour), but also when ``breakpoint()`` is called from within a test, the custom class debugger will be instantiated.
 
 .. _durations:
@@ -269,6 +269,7 @@ To get a list of the slowest 10 test durations::
 
     pytest --durations=10
 
+By default, pytest will not show test durations that are too small (<0.01s) unless ``-vv`` is passed on the command-line.
 
 Creating JUnitXML format files
 ----------------------------------------------------

doc/en/warnings.rst

@@ -29,8 +29,9 @@ Running pytest now produces this output::
     test_show_warnings.py .                                              [100%]
 
     ============================= warnings summary =============================
-    $REGENDOC_TMPDIR/test_show_warnings.py:4: UserWarning: api v1, should use functions from v2
-      warnings.warn(UserWarning("api v1, should use functions from v2"))
+    test_show_warnings.py::test_one
+      $REGENDOC_TMPDIR/test_show_warnings.py:4: UserWarning: api v1, should use functions from v2
+        warnings.warn(UserWarning("api v1, should use functions from v2"))
 
     -- Docs: https://docs.pytest.org/en/latest/warnings.html
     =================== 1 passed, 1 warnings in 0.12 seconds ===================
@@ -75,54 +76,6 @@ Both ``-W`` command-line option and ``filterwarnings`` ini option are based on P
 `-W option`_ and `warnings.simplefilter`_, so please refer to those sections in the Python
 documentation for other examples and advanced usage.
 
-Disabling warning summary
--------------------------
-
-Although not recommended, you can use the ``--disable-warnings`` command-line option to suppress the
-warning summary entirely from the test run output.
-
-Disabling warning capture entirely
-----------------------------------
-
-This plugin is enabled by default but can be disabled entirely in your ``pytest.ini`` file with:
-
-    .. code-block:: ini
-
-        [pytest]
-        addopts = -p no:warnings
-
-Or passing ``-p no:warnings`` in the command-line. This might be useful if your test suites handles warnings
-using an external system.
-
-
-.. _`deprecation-warnings`:
-
-DeprecationWarning and PendingDeprecationWarning
-------------------------------------------------
-
-.. versionadded:: 3.8
-
-By default pytest will display ``DeprecationWarning`` and ``PendingDeprecationWarning`` if no other warning filters
-are configured.
-
-To disable showing ``DeprecationWarning`` and ``PendingDeprecationWarning`` warnings, you might define any warnings
-filter either in the command-line or in the ini file, or you can use:
-
-.. code-block:: ini
-
-    [pytest]
-    filterwarnings =
-        ignore::DeprecationWarning
-        ignore::PendingDeprecationWarning
-
-.. note::
-    This makes pytest more compliant with `PEP-0506 <https://www.python.org/dev/peps/pep-0565/#recommended-filter-settings-for-test-runners>`_ which suggests that those warnings should
-    be shown by default by test runners, but pytest doesn't follow ``PEP-0506`` completely because resetting all
-    warning filters like suggested in the PEP will break existing test suites that configure warning filters themselves
-    by calling ``warnings.simplefilter`` (see issue `#2430 <https://github.com/pytest-dev/pytest/issues/2430>`_
-    for an example of that).
-
-
 .. _`filterwarnings`:
 
 ``@pytest.mark.filterwarnings``
@@ -161,24 +114,6 @@ decorator or to all tests in a module by setting the ``pytestmark`` variable:
     pytestmark = pytest.mark.filterwarnings("error")
 
 
-.. note::
-
-    Except for these features, pytest does not change the python warning filter; it only captures
-    and displays the warnings which are issued with respect to the currently configured filter,
-    including changes to the filter made by test functions or by the system under test.
-
-.. note::
-
-    ``DeprecationWarning`` and ``PendingDeprecationWarning`` are hidden by the standard library
-    by default so you have to explicitly configure them to be displayed in your ``pytest.ini``:
-
-    .. code-block:: ini
-
-        [pytest]
-        filterwarnings =
-            once::DeprecationWarning
-            once::PendingDeprecationWarning
-
 
 *Credits go to Florian Schulze for the reference implementation in the* `pytest-warnings`_
 *plugin.*
@@ -187,6 +122,102 @@ decorator or to all tests in a module by setting the ``pytestmark`` variable:
 .. _warnings.simplefilter: https://docs.python.org/3/library/warnings.html#warnings.simplefilter
 .. _`pytest-warnings`: https://github.com/fschulze/pytest-warnings
 
+Disabling warnings summary
+--------------------------
+
+Although not recommended, you can use the ``--disable-warnings`` command-line option to suppress the
+warning summary entirely from the test run output.
+
+Disabling warning capture entirely
+----------------------------------
+
+This plugin is enabled by default but can be disabled entirely in your ``pytest.ini`` file with:
+
+    .. code-block:: ini
+
+        [pytest]
+        addopts = -p no:warnings
+
+Or passing ``-p no:warnings`` in the command-line. This might be useful if your test suites handles warnings
+using an external system.
+
+
+.. _`deprecation-warnings`:
+
+DeprecationWarning and PendingDeprecationWarning
+------------------------------------------------
+
+.. versionadded:: 3.8
+.. versionchanged:: 3.9
+
+By default pytest will display ``DeprecationWarning`` and ``PendingDeprecationWarning`` warnings from
+user code and third-party libraries, as recommended by `PEP-0506 <https://www.python.org/dev/peps/pep-0565>`_.
+This helps users keep their code modern and avoid breakages when deprecated warnings are effectively removed.
+
+Sometimes it is useful to hide some specific deprecation warnings that happen in code that you have no control over
+(such as third-party libraries), in which case you might use the warning filters options (ini or marks) to ignore
+those warnings.
+
+For example:
+
+.. code-block:: ini
+
+    [pytest]
+    filterwarnings =
+        ignore:.*U.*mode is deprecated:DeprecationWarning
+
+
+This will ignore all warnings of type ``DeprecationWarning`` where the start of the message matches
+the regular expression ``".*U.*mode is deprecated"``.
+
+.. note::
+    If warnings are configured at the interpreter level, using
+    the `PYTHONWARNINGS <https://docs.python.org/3/using/cmdline.html#envvar-PYTHONWARNINGS>`_ environment variable or the
+    ``-W`` command-line option, pytest will not configure any filters by default.
+
+    Also pytest doesn't follow ``PEP-0506`` suggestion of resetting all warning filters because
+    it might break test suites that configure warning filters themselves
+    by calling ``warnings.simplefilter`` (see issue `#2430 <https://github.com/pytest-dev/pytest/issues/2430>`_
+    for an example of that).
+
+
+.. _`ensuring a function triggers a deprecation warning`:
+
+.. _ensuring_function_triggers:
+
+Ensuring code triggers a deprecation warning
+--------------------------------------------
+
+You can also call a global helper for checking
+that a certain function call triggers a ``DeprecationWarning`` or
+``PendingDeprecationWarning``::
+
+    import pytest
+
+    def test_global():
+        pytest.deprecated_call(myfunction, 17)
+
+By default, ``DeprecationWarning`` and ``PendingDeprecationWarning`` will not be
+caught when using ``pytest.warns`` or ``recwarn`` because default Python warnings filters hide
+them. If you wish to record them in your own code, use the
+command ``warnings.simplefilter('always')``::
+
+    import warnings
+    import pytest
+
+    def test_deprecation(recwarn):
+        warnings.simplefilter('always')
+        warnings.warn("deprecated", DeprecationWarning)
+        assert len(recwarn) == 1
+        assert recwarn.pop(DeprecationWarning)
+
+You can also use it as a contextmanager::
+
+    def test_global():
+        with pytest.deprecated_call():
+            myobject.deprecated_method()
+
+
 
 .. _`asserting warnings`:
 
@@ -293,42 +324,8 @@ warnings, or index into it to get a particular recorded warning.
 
 Full API: :class:`WarningsRecorder`.
 
-.. _`ensuring a function triggers a deprecation warning`:
-
-.. _ensuring_function_triggers:
-
-Ensuring a function triggers a deprecation warning
--------------------------------------------------------
-
-You can also call a global helper for checking
-that a certain function call triggers a ``DeprecationWarning`` or
-``PendingDeprecationWarning``::
-
-    import pytest
-
-    def test_global():
-        pytest.deprecated_call(myfunction, 17)
-
-By default, ``DeprecationWarning`` and ``PendingDeprecationWarning`` will not be
-caught when using ``pytest.warns`` or ``recwarn`` because default Python warnings filters hide
-them. If you wish to record them in your own code, use the
-command ``warnings.simplefilter('always')``::
-
-    import warnings
-    import pytest
-
-    def test_deprecation(recwarn):
-        warnings.simplefilter('always')
-        warnings.warn("deprecated", DeprecationWarning)
-        assert len(recwarn) == 1
-        assert recwarn.pop(DeprecationWarning)
-
-You can also use it as a contextmanager::
-
-    def test_global():
-        with pytest.deprecated_call():
-            myobject.deprecated_method()
 
+.. _internal-warnings:
 
 Internal pytest warnings
 ------------------------
@@ -355,17 +352,17 @@ defines an ``__init__`` constructor, as this prevents the class from being insta
     $ pytest test_pytest_warnings.py -q
 
     ============================= warnings summary =============================
-    $REGENDOC_TMPDIR/test_pytest_warnings.py:1: PytestWarning: cannot collect test class 'Test' because it has a __init__ constructor
-      class Test:
+    test_pytest_warnings.py:1
+      $REGENDOC_TMPDIR/test_pytest_warnings.py:1: PytestWarning: cannot collect test class 'Test' because it has a __init__ constructor
+        class Test:
 
     -- Docs: https://docs.pytest.org/en/latest/warnings.html
     1 warnings in 0.12 seconds
 
 These warnings might be filtered using the same builtin mechanisms used to filter other types of warnings.
 
-Following our :ref:`backwards-compatibility`, deprecated features will be kept *at least* two minor releases. After that,
-they will changed so they by default raise errors instead of just warnings, so users can adapt to it on their own time
-if not having done so until now. In a later release the deprecated feature will be removed completely.
+Please read our :ref:`backwards-compatibility` to learn how we proceed about deprecating and eventually removing
+features.
 
 The following warning types ares used by pytest and are part of the public API:
 

doc/en/writing_plugins.rst

@@ -418,11 +418,24 @@ additionally it is possible to copy examples for a example folder before running
     test_example.py ..                                                   [100%]
 
     ============================= warnings summary =============================
-    $REGENDOC_TMPDIR/test_example.py:4: PytestExperimentalApiWarning: testdir.copy_example is an experimental api that may change over time
-      testdir.copy_example("test_example.py")
+    test_example.py::test_plugin
+      $REGENDOC_TMPDIR/test_example.py:4: PytestExperimentalApiWarning: testdir.copy_example is an experimental api that may change over time
+        testdir.copy_example("test_example.py")
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.Class is deprecated, please use pytest.Class instead
+        return getattr(object, name, default)
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.File is deprecated, please use pytest.File instead
+        return getattr(object, name, default)
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.Function is deprecated, please use pytest.Function instead
+        return getattr(object, name, default)
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.Instance is deprecated, please use pytest.Instance instead
+        return getattr(object, name, default)
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.Item is deprecated, please use pytest.Item instead
+        return getattr(object, name, default)
+      $PYTHON_PREFIX/lib/python3.6/site-packages/_pytest/compat.py:332: RemovedInPytest4Warning: usage of Session.Module is deprecated, please use pytest.Module instead
+        return getattr(object, name, default)
 
     -- Docs: https://docs.pytest.org/en/latest/warnings.html
-    =================== 2 passed, 1 warnings in 0.12 seconds ===================
+    =================== 2 passed, 7 warnings in 0.12 seconds ===================
 
 For more information about the result object that ``runpytest()`` returns, and
 the methods that it provides please check out the :py:class:`RunResult

extra/get_issues.py

@@ -1,4 +1,5 @@
 import json
+
 import py
 import requests
 

pyproject.toml

@@ -1,6 +1,7 @@
 [build-system]
 requires = [
-  "setuptools",
+  # sync with setup.py until we discard non-pep-517/518
+  "setuptools>=40.0",
   "setuptools-scm",
   "wheel",
 ]
@@ -15,7 +16,12 @@ template = "changelog/_template.rst"
 
   [[tool.towncrier.type]]
   directory = "removal"
-  name = "Deprecations and Removals"
+  name = "Removals"
+  showcontent = true
+
+  [[tool.towncrier.type]]
+  directory = "deprecation"
+  name = "Deprecations"
   showcontent = true
 
   [[tool.towncrier.type]]

scripts/call-tox.bat

@@ -1,8 +0,0 @@
-REM skip "coveralls" run in PRs or forks
-if "%TOXENV%" == "coveralls" (
-    if not defined COVERALLS_REPO_TOKEN (
-        echo skipping coveralls run because COVERALLS_REPO_TOKEN is not defined
-        exit /b 0
-    )
-)
-C:\Python36\python -m tox

scripts/fail

@@ -1,7 +0,0 @@
-#!/usr/bin/env python
-"""Used by .pre-commit-config.yaml"""
-import sys
-
-if __name__ == "__main__":
-    print(" ".join(sys.argv[1:]))
-    sys.exit(1)

scripts/prepare-coverage.bat

@@ -0,0 +1,10 @@
+REM scripts called by AppVeyor to setup the environment variables to enable coverage
+if not defined PYTEST_NO_COVERAGE (
+    set "COVERAGE_FILE=%CD%\.coverage"
+    set "COVERAGE_PROCESS_START=%CD%\.coveragerc"
+    set "_PYTEST_TOX_COVERAGE_RUN=coverage run -m"
+    set "_PYTEST_TOX_EXTRA_DEP=coverage-enable-subprocess"
+    echo Coverage setup completed
+) else (
+    echo Skipping coverage setup, PYTEST_NO_COVERAGE is set
+)

scripts/release.py

@@ -2,9 +2,13 @@
 Invoke development tasks.
 """
 import argparse
-from colorama import init, Fore
 from pathlib import Path
-from subprocess import check_output, check_call, call
+from subprocess import call
+from subprocess import check_call
+from subprocess import check_output
+
+from colorama import Fore
+from colorama import init
 
 
 def announce(version):

scripts/upload-coverage.bat

@@ -0,0 +1,11 @@
+REM script called by AppVeyor to combine and upload coverage information to codecov
+if not defined PYTEST_NO_COVERAGE (
+    echo Prepare to upload coverage information
+    C:\Python36\Scripts\pip install codecov
+    C:\Python36\Scripts\coverage combine
+    C:\Python36\Scripts\coverage xml --ignore-errors
+    C:\Python36\Scripts\coverage report -m --ignore-errors
+    C:\Python36\Scripts\codecov --required -X gcov pycov search -f coverage.xml --flags %TOXENV:-= % windows
+) else (
+    echo Skipping coverage upload, PYTEST_NO_COVERAGE is set
+)

setup.cfg

@@ -1,3 +1,55 @@
+[metadata]
+
+name = pytest
+description = pytest: simple powerful testing with Python
+long_description = file: README.rst
+url = https://docs.pytest.org/en/latest/
+project_urls =
+    Source=https://github.com/pytest-dev/pytest
+    Tracker=https://github.com/pytest-dev/pytest/issues
+
+author = Holger Krekel, Bruno Oliveira, Ronny Pfannschmidt, Floris Bruynooghe, Brianna Laugher, Florian Bruhin and others
+
+license = MIT license
+license_file = LICENSE
+keywords = test, unittest
+classifiers =
+    Development Status :: 6 - Mature
+    Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
+    Operating System :: POSIX
+    Operating System :: Microsoft :: Windows
+    Operating System :: MacOS :: MacOS X
+    Topic :: Software Development :: Testing
+    Topic :: Software Development :: Libraries
+    Topic :: Utilities
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+platforms = unix, linux, osx, cygwin, win32
+
+[options]
+zip_safe = no
+packages =
+    _pytest
+    _pytest.assertion
+    _pytest._code
+    _pytest.mark
+    _pytest.config
+
+py_modules = pytest
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+
+
+[options.entry_points]
+console_scripts =
+	pytest=pytest:main
+	py.test=pytest:main
+
 [build_sphinx]
 source-dir = doc/en/
 build-dir = doc/build
@@ -13,8 +65,6 @@ universal = 1
 ignore =
   _pytest/_version.py
 
-[metadata]
-license_file = LICENSE
 
 [devpi:upload]
 formats = sdist.tgz,bdist_wheel

setup.py

@@ -1,126 +1,35 @@
 import os
-import sys
-import setuptools
-import pkg_resources
+
 from setuptools import setup
 
-classifiers = [
-    "Development Status :: 6 - Mature",
-    "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
-    "Operating System :: POSIX",
-    "Operating System :: Microsoft :: Windows",
-    "Operating System :: MacOS :: MacOS X",
-    "Topic :: Software Development :: Testing",
-    "Topic :: Software Development :: Libraries",
-    "Topic :: Utilities",
-] + [
-    ("Programming Language :: Python :: %s" % x)
-    for x in "2 2.7 3 3.4 3.5 3.6 3.7".split()
+
+# TODO: if py gets upgrade to >=1.6,
+#       remove _width_of_current_line in terminal.py
+INSTALL_REQUIRES = [
+    "py>=1.5.0",
+    "six>=1.10.0",
+    "setuptools",
+    "attrs>=17.4.0",
+    "more-itertools>=4.0.0",
+    "atomicwrites>=1.0",
+    'funcsigs;python_version<"3.0"',
+    'pathlib2>=2.2.0;python_version<"3.6"',
+    'colorama;sys_platform=="win32"',
 ]
 
-with open("README.rst") as fd:
-    long_description = fd.read()
 
-
-def get_environment_marker_support_level():
-    """
-    Tests how well setuptools supports PEP-426 environment marker.
-
-    The first known release to support it is 0.7 (and the earliest on PyPI seems to be 0.7.2
-    so we're using that), see: https://setuptools.readthedocs.io/en/latest/history.html#id350
-
-    The support is later enhanced to allow direct conditional inclusions inside install_requires,
-    which is now recommended by setuptools. It first appeared in 36.2.0, went broken with 36.2.1, and
-    again worked since 36.2.2, so we're using that. See:
-    https://setuptools.readthedocs.io/en/latest/history.html#v36-2-2
-    https://github.com/pypa/setuptools/issues/1099
-
-    References:
-
-    * https://wheel.readthedocs.io/en/latest/index.html#defining-conditional-dependencies
-    * https://www.python.org/dev/peps/pep-0426/#environment-markers
-    * https://setuptools.readthedocs.io/en/latest/setuptools.html#declaring-platform-specific-dependencies
-    """
-    try:
-        version = pkg_resources.parse_version(setuptools.__version__)
-        if version >= pkg_resources.parse_version("36.2.2"):
-            return 2
-        if version >= pkg_resources.parse_version("0.7.2"):
-            return 1
-    except Exception as exc:
-        sys.stderr.write("Could not test setuptool's version: %s\n" % exc)
-
-    # as of testing on 2018-05-26 fedora was on version 37* and debian was on version 33+
-    # we should consider erroring on those
-    return 0
+# if _PYTEST_SETUP_SKIP_PLUGGY_DEP is set, skip installing pluggy;
+# used by tox.ini to test with pluggy master
+if "_PYTEST_SETUP_SKIP_PLUGGY_DEP" not in os.environ:
+    INSTALL_REQUIRES.append("pluggy>=0.7")
 
 
 def main():
-    extras_require = {}
-    install_requires = [
-        "py>=1.5.0",  # if py gets upgrade to >=1.6, remove _width_of_current_line in terminal.py
-        "six>=1.10.0",
-        "setuptools",
-        "attrs>=17.4.0",
-        "more-itertools>=4.0.0",
-        "atomicwrites>=1.0",
-    ]
-    # if _PYTEST_SETUP_SKIP_PLUGGY_DEP is set, skip installing pluggy;
-    # used by tox.ini to test with pluggy master
-    if "_PYTEST_SETUP_SKIP_PLUGGY_DEP" not in os.environ:
-        install_requires.append("pluggy>=0.7")
-    environment_marker_support_level = get_environment_marker_support_level()
-    if environment_marker_support_level >= 2:
-        install_requires.append('funcsigs;python_version<"3.0"')
-        install_requires.append('pathlib2>=2.2.0;python_version<"3.6"')
-        install_requires.append('colorama;sys_platform=="win32"')
-    elif environment_marker_support_level == 1:
-        extras_require[':python_version<"3.0"'] = ["funcsigs"]
-        extras_require[':python_version<"3.6"'] = ["pathlib2>=2.2.0"]
-        extras_require[':sys_platform=="win32"'] = ["colorama"]
-    else:
-        if sys.platform == "win32":
-            install_requires.append("colorama")
-        if sys.version_info < (3, 0):
-            install_requires.append("funcsigs")
-        if sys.version_info < (3, 6):
-            install_requires.append("pathlib2>=2.2.0")
-
     setup(
-        name="pytest",
-        description="pytest: simple powerful testing with Python",
-        long_description=long_description,
         use_scm_version={"write_to": "src/_pytest/_version.py"},
-        url="https://docs.pytest.org/en/latest/",
-        project_urls={
-            "Source": "https://github.com/pytest-dev/pytest",
-            "Tracker": "https://github.com/pytest-dev/pytest/issues",
-        },
-        license="MIT license",
-        platforms=["unix", "linux", "osx", "cygwin", "win32"],
-        author=(
-            "Holger Krekel, Bruno Oliveira, Ronny Pfannschmidt, "
-            "Floris Bruynooghe, Brianna Laugher, Florian Bruhin and others"
-        ),
-        entry_points={"console_scripts": ["pytest=pytest:main", "py.test=pytest:main"]},
-        classifiers=classifiers,
-        keywords="test unittest",
-        # the following should be enabled for release
-        setup_requires=["setuptools-scm"],
+        setup_requires=["setuptools-scm", "setuptools>=40.0"],
         package_dir={"": "src"},
-        python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
-        install_requires=install_requires,
-        extras_require=extras_require,
-        packages=[
-            "_pytest",
-            "_pytest.assertion",
-            "_pytest._code",
-            "_pytest.mark",
-            "_pytest.config",
-        ],
-        py_modules=["pytest"],
-        zip_safe=False,
+        install_requires=INSTALL_REQUIRES,
     )
 
 

src/_pytest/_argcomplete.py

@@ -1,4 +1,3 @@
-
 """allow bash-completion for argparse with argcomplete if installed
 needs argcomplete>=0.5.6 for python 3.2/3.3 (older versions fail
 to find the magic string, so _ARGCOMPLETE env. var is never set, and
@@ -54,9 +53,12 @@ If things do not work right away:
   which should throw a KeyError: 'COMPLINE' (which is properly set by the
   global argcomplete script).
 """
-from __future__ import absolute_import, division, print_function
-import sys
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
+import sys
 from glob import glob
 
 

src/_pytest/_code/__init__.py

@@ -1,10 +1,14 @@
 """ python inspection/code generation API """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 from .code import Code  # noqa
 from .code import ExceptionInfo  # noqa
+from .code import filter_traceback  # noqa
 from .code import Frame  # noqa
-from .code import Traceback  # noqa
 from .code import getrawcode  # noqa
-from .source import Source  # noqa
+from .code import Traceback  # noqa
 from .source import compile_ as compile  # noqa
 from .source import getfslineno  # noqa
+from .source import Source  # noqa

src/_pytest/_code/_py2traceback.py

@@ -2,8 +2,13 @@
 # CHANGES:
 # - some_str is replaced, trying to create unicode strings
 #
-from __future__ import absolute_import, division, print_function, unicode_literals
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
 import types
+
 from six import text_type
 
 

src/_pytest/_code/code.py

@@ -1,17 +1,27 @@
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import inspect
 import pprint
+import re
 import sys
 import traceback
-from inspect import CO_VARARGS, CO_VARKEYWORDS
+from inspect import CO_VARARGS
+from inspect import CO_VARKEYWORDS
+from weakref import ref
 
 import attr
-import re
-from weakref import ref
-from _pytest.compat import _PY2, _PY3, PY35, safe_str
-from six import text_type
+import pluggy
 import py
 import six
+from six import text_type
+
+import _pytest
+from _pytest.compat import _PY2
+from _pytest.compat import _PY3
+from _pytest.compat import PY35
+from _pytest.compat import safe_str
 
 builtin_repr = repr
 
@@ -451,13 +461,35 @@ class ExceptionInfo(object):
         tbfilter=True,
         funcargs=False,
         truncate_locals=True,
+        chain=True,
     ):
-        """ return str()able representation of this exception info.
-            showlocals: show locals per traceback entry
-            style: long|short|no|native traceback style
-            tbfilter: hide entries (where __tracebackhide__ is true)
+        """
+        Return str()able representation of this exception info.
 
-            in case of style==native, tbfilter and showlocals is ignored.
+        :param bool showlocals:
+            Show locals per traceback entry.
+            Ignored if ``style=="native"``.
+
+        :param str style: long|short|no|native traceback style
+
+        :param bool abspath:
+            If paths should be changed to absolute or left unchanged.
+
+        :param bool tbfilter:
+            Hide entries that contain a local variable ``__tracebackhide__==True``.
+            Ignored if ``style=="native"``.
+
+        :param bool funcargs:
+            Show fixtures ("funcargs" for legacy purposes) per traceback entry.
+
+        :param bool truncate_locals:
+            With ``showlocals==True``, make sure locals can be safely represented as strings.
+
+        :param bool chain: if chained exceptions in Python 3 should be shown.
+
+        .. versionchanged:: 3.9
+
+            Added the ``chain`` parameter.
         """
         if style == "native":
             return ReprExceptionInfo(
@@ -476,6 +508,7 @@ class ExceptionInfo(object):
             tbfilter=tbfilter,
             funcargs=funcargs,
             truncate_locals=truncate_locals,
+            chain=chain,
         )
         return fmt.repr_excinfo(self)
 
@@ -516,6 +549,7 @@ class FormattedExcinfo(object):
     tbfilter = attr.ib(default=True)
     funcargs = attr.ib(default=False)
     truncate_locals = attr.ib(default=True)
+    chain = attr.ib(default=True)
     astcache = attr.ib(default=attr.Factory(dict), init=False, repr=False)
 
     def _getindent(self, source):
@@ -735,7 +769,7 @@ class FormattedExcinfo(object):
                     reprcrash = None
 
                 repr_chain += [(reprtraceback, reprcrash, descr)]
-                if e.__cause__ is not None:
+                if e.__cause__ is not None and self.chain:
                     e = e.__cause__
                     excinfo = (
                         ExceptionInfo((type(e), e, e.__traceback__))
@@ -743,7 +777,11 @@ class FormattedExcinfo(object):
                         else None
                     )
                     descr = "The above exception was the direct cause of the following exception:"
-                elif e.__context__ is not None and not e.__suppress_context__:
+                elif (
+                    e.__context__ is not None
+                    and not e.__suppress_context__
+                    and self.chain
+                ):
                     e = e.__context__
                     excinfo = (
                         ExceptionInfo((type(e), e, e.__traceback__))
@@ -979,3 +1017,36 @@ else:
             return "maximum recursion depth exceeded" in str(excinfo.value)
         except UnicodeError:
             return False
+
+
+# relative paths that we use to filter traceback entries from appearing to the user;
+# see filter_traceback
+# note: if we need to add more paths than what we have now we should probably use a list
+# for better maintenance
+
+_PLUGGY_DIR = py.path.local(pluggy.__file__.rstrip("oc"))
+# pluggy is either a package or a single module depending on the version
+if _PLUGGY_DIR.basename == "__init__.py":
+    _PLUGGY_DIR = _PLUGGY_DIR.dirpath()
+_PYTEST_DIR = py.path.local(_pytest.__file__).dirpath()
+_PY_DIR = py.path.local(py.__file__).dirpath()
+
+
+def filter_traceback(entry):
+    """Return True if a TracebackEntry instance should be removed from tracebacks:
+    * dynamically generated code (no code to show up for it);
+    * internal traceback from pytest or its internal libraries, py and pluggy.
+    """
+    # entry.path might sometimes return a str object when the entry
+    # points to dynamically generated code
+    # see https://bitbucket.org/pytest-dev/py/issues/71
+    raw_filename = entry.frame.code.raw.co_filename
+    is_generated = "<" in raw_filename and ">" in raw_filename
+    if is_generated:
+        return False
+    # entry.path might point to a non-existing file, in which case it will
+    # also return a str object. see #1133
+    p = py.path.local(entry.path)
+    return (
+        not p.relto(_PLUGGY_DIR) and not p.relto(_PYTEST_DIR) and not p.relto(_PY_DIR)
+    )

src/_pytest/_code/source.py

@@ -1,14 +1,18 @@
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import ast
-from ast import PyCF_ONLY_AST as _AST_FLAG
-from bisect import bisect_right
+import inspect
 import linecache
 import sys
-import six
-import inspect
+import textwrap
 import tokenize
+from ast import PyCF_ONLY_AST as _AST_FLAG
+from bisect import bisect_right
+
 import py
+import six
 
 cpy_compile = compile
 
@@ -23,7 +27,6 @@ class Source(object):
     def __init__(self, *parts, **kwargs):
         self.lines = lines = []
         de = kwargs.get("deindent", True)
-        rstrip = kwargs.get("rstrip", True)
         for part in parts:
             if not part:
                 partlines = []
@@ -33,11 +36,6 @@ class Source(object):
                 partlines = [x.rstrip("\n") for x in part]
             elif isinstance(part, six.string_types):
                 partlines = part.split("\n")
-                if rstrip:
-                    while partlines:
-                        if partlines[-1].strip():
-                            break
-                        partlines.pop()
             else:
                 partlines = getsource(part, deindent=de).lines
             if de:
@@ -115,17 +113,10 @@ class Source(object):
         ast, start, end = getstatementrange_ast(lineno, self)
         return start, end
 
-    def deindent(self, offset=None):
-        """ return a new source object deindented by offset.
-            If offset is None then guess an indentation offset from
-            the first non-blank line.  Subsequent lines which have a
-            lower indentation offset will be copied verbatim as
-            they are assumed to be part of multilines.
-        """
-        # XXX maybe use the tokenizer to properly handle multiline
-        #     strings etc.pp?
+    def deindent(self):
+        """return a new source object deindented."""
         newsource = Source()
-        newsource.lines[:] = deindent(self.lines, offset)
+        newsource.lines[:] = deindent(self.lines)
         return newsource
 
     def isparseable(self, deindent=True):
@@ -268,47 +259,8 @@ def getsource(obj, **kwargs):
     return Source(strsrc, **kwargs)
 
 
-def deindent(lines, offset=None):
-    if offset is None:
-        for line in lines:
-            line = line.expandtabs()
-            s = line.lstrip()
-            if s:
-                offset = len(line) - len(s)
-                break
-        else:
-            offset = 0
-    if offset == 0:
-        return list(lines)
-    newlines = []
-
-    def readline_generator(lines):
-        for line in lines:
-            yield line + "\n"
-
-    it = readline_generator(lines)
-
-    try:
-        for _, _, (sline, _), (eline, _), _ in tokenize.generate_tokens(
-            lambda: next(it)
-        ):
-            if sline > len(lines):
-                break  # End of input reached
-            if sline > len(newlines):
-                line = lines[sline - 1].expandtabs()
-                if line.lstrip() and line[:offset].isspace():
-                    line = line[offset:]  # Deindent
-                newlines.append(line)
-
-            for i in range(sline, eline):
-                # Don't deindent continuing lines of
-                # multiline tokens (i.e. multiline strings)
-                newlines.append(lines[i])
-    except (IndentationError, tokenize.TokenError):
-        pass
-    # Add any lines we didn't see. E.g. if an exception was raised.
-    newlines.extend(lines[len(newlines) :])
-    return newlines
+def deindent(lines):
+    return textwrap.dedent("\n".join(lines)).splitlines()
 
 
 def get_statement_startend2(lineno, node):

src/_pytest/assertion/__init__.py

@@ -1,13 +1,17 @@
 """
 support for presenting detailed information in failing assertions.
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import sys
+
 import six
 
-from _pytest.assertion import util
 from _pytest.assertion import rewrite
 from _pytest.assertion import truncate
+from _pytest.assertion import util
 
 
 def pytest_addoption(parser):

src/_pytest/assertion/rewrite.py

@@ -1,22 +1,28 @@
 """Rewrite assertion AST to produce nice error messages"""
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import ast
 import errno
-import itertools
 import imp
+import itertools
 import marshal
 import os
 import re
-import six
+import string
 import struct
 import sys
 import types
 
 import atomicwrites
 import py
+import six
 
 from _pytest.assertion import util
-
+from _pytest.compat import spec_from_file_location
+from _pytest.pathlib import fnmatch_ex
+from _pytest.pathlib import PurePath
 
 # pytest caches rewritten pycs in __pycache__.
 if hasattr(imp, "get_tag"):
@@ -45,14 +51,6 @@ else:
         return ast.Call(a, b, c, None, None)
 
 
-if sys.version_info >= (3, 4):
-    from importlib.util import spec_from_file_location
-else:
-
-    def spec_from_file_location(*_, **__):
-        return None
-
-
 class AssertionRewritingHook(object):
     """PEP302 Import hook which rewrites asserts."""
 
@@ -198,14 +196,14 @@ class AssertionRewritingHook(object):
             return False
 
         # For matching the name it must be as if it was a filename.
-        parts[-1] = parts[-1] + ".py"
-        fn_pypath = py.path.local(os.path.sep.join(parts))
+        path = PurePath(os.path.sep.join(parts) + ".py")
+
         for pat in self.fnpats:
             # if the pattern contains subdirectories ("tests/**.py" for example) we can't bail out based
             # on the name alone because we need to match against the full path
             if os.path.dirname(pat):
                 return False
-            if fn_pypath.fnmatch(pat):
+            if fnmatch_ex(pat, path):
                 return False
 
         if self._is_marked_for_rewrite(name, state):
@@ -275,17 +273,17 @@ class AssertionRewritingHook(object):
         )
 
     def load_module(self, name):
-        # If there is an existing module object named 'fullname' in
-        # sys.modules, the loader must use that existing module. (Otherwise,
-        # the reload() builtin will not work correctly.)
-        if name in sys.modules:
-            return sys.modules[name]
-
         co, pyc = self.modules.pop(name)
-        # I wish I could just call imp.load_compiled here, but __file__ has to
-        # be set properly. In Python 3.2+, this all would be handled correctly
-        # by load_compiled.
-        mod = sys.modules[name] = imp.new_module(name)
+        if name in sys.modules:
+            # If there is an existing module object named 'fullname' in
+            # sys.modules, the loader must use that existing module. (Otherwise,
+            # the reload() builtin will not work correctly.)
+            mod = sys.modules[name]
+        else:
+            # I wish I could just call imp.load_compiled here, but __file__ has to
+            # be set properly. In Python 3.2+, this all would be handled correctly
+            # by load_compiled.
+            mod = sys.modules[name] = imp.new_module(name)
         try:
             mod.__file__ = co.co_filename
             # Normally, this attribute is 3.2+.
@@ -404,7 +402,7 @@ def _rewrite_test(config, fn):
             finally:
                 del state._indecode
     try:
-        tree = ast.parse(source)
+        tree = ast.parse(source, filename=fn.strpath)
     except SyntaxError:
         # Let this pop up again in the real import.
         state.trace("failed to parse: %r" % (fn,))
@@ -473,10 +471,14 @@ def _saferepr(obj):
 
     """
     r = py.io.saferepr(obj)
-    if isinstance(r, six.text_type):
-        return r.replace(u"\n", u"\\n")
-    else:
-        return r.replace(b"\n", b"\\n")
+    # only occurs in python2.x, repr must return text in python3+
+    if isinstance(r, bytes):
+        # Represent unprintable bytes as `\x##`
+        r = u"".join(
+            u"\\x{:x}".format(ord(c)) if c not in string.printable else c.decode()
+            for c in r
+        )
+    return r.replace(u"\n", u"\\n")
 
 
 from _pytest.assertion.util import format_explanation as _format_explanation  # noqa
@@ -707,10 +709,9 @@ class AssertionRewriter(ast.NodeVisitor):
                     setattr(node, name, new)
                 elif (
                     isinstance(field, ast.AST)
-                    and
                     # Don't recurse into expressions as they can't contain
                     # asserts.
-                    not isinstance(field, ast.expr)
+                    and not isinstance(field, ast.expr)
                 ):
                     nodes.append(field)
 

src/_pytest/assertion/truncate.py

@@ -4,7 +4,10 @@ Utilities for truncating assertion output.
 Current default behaviour is to truncate assertion explanations at
 ~8 terminal lines, unless running in "-vv" mode or running on CI.
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 
 import six

src/_pytest/assertion/util.py

@@ -1,10 +1,14 @@
 """Utilities for assertion debugging"""
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import pprint
 
-import _pytest._code
 import py
 import six
+
+import _pytest._code
 from ..compat import Sequence
 
 u = six.text_type
@@ -199,7 +203,7 @@ def _diff_text(left, right, verbose=False):
         if i > 42:
             i -= 10  # Provide some context
             explanation = [
-                u("Skipping %s identical leading " "characters in diff, use -v to show")
+                u("Skipping %s identical leading characters in diff, use -v to show")
                 % i
             ]
             left = left[i:]

src/_pytest/cacheprovider.py

@@ -4,19 +4,22 @@ merged implementation of the cache provider
 the name cache was not chosen to ensure pluggy automatically
 ignores the external pytest-cache
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+import json
 from collections import OrderedDict
 
+import attr
 import py
 import six
-import attr
 
 import pytest
-import json
-import shutil
-
-from . import paths
-from .compat import _PY2 as PY2, Path
+from .compat import _PY2 as PY2
+from .pathlib import Path
+from .pathlib import resolve_from_str
+from .pathlib import rmtree
 
 README_CONTENT = u"""\
 # pytest cache directory #
@@ -39,13 +42,13 @@ class Cache(object):
     def for_config(cls, config):
         cachedir = cls.cache_dir_from_config(config)
         if config.getoption("cacheclear") and cachedir.exists():
-            shutil.rmtree(str(cachedir))
+            rmtree(cachedir, force=True)
             cachedir.mkdir()
         return cls(cachedir, config)
 
     @staticmethod
     def cache_dir_from_config(config):
-        return paths.resolve_from_str(config.getini("cache_dir"), config.rootdir)
+        return resolve_from_str(config.getini("cache_dir"), config.rootdir)
 
     def warn(self, fmt, **args):
         from _pytest.warnings import _issue_config_warning
@@ -115,15 +118,18 @@ class Cache(object):
         else:
             with f:
                 json.dump(value, f, indent=2, sort_keys=True)
-                self._ensure_readme()
-
-    def _ensure_readme(self):
+                self._ensure_supporting_files()
 
+    def _ensure_supporting_files(self):
+        """Create supporting files in the cache dir that are not really part of the cache."""
         if self._cachedir.is_dir():
             readme_path = self._cachedir / "README.md"
             if not readme_path.is_file():
                 readme_path.write_text(README_CONTENT)
 
+            msg = u"# created by pytest automatically, do not change\n*"
+            self._cachedir.joinpath(".gitignore").write_text(msg, encoding="UTF-8")
+
 
 class LFPlugin(object):
     """ Plugin which implements the --lf (run last-failing) option """
@@ -341,7 +347,7 @@ def cacheshow(config, session):
         key = valpath.relative_to(vdir)
         val = config.cache.get(key, dummy)
         if val is dummy:
-            tw.line("%s contains unreadable content, " "will be ignored" % key)
+            tw.line("%s contains unreadable content, will be ignored" % key)
         else:
             tw.line("%s contains:" % key)
             for line in pformat(val).splitlines():

src/_pytest/capture.py

@@ -2,17 +2,20 @@
 per-test stdout/stderr capturing mechanism.
 
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import collections
 import contextlib
-import sys
-import os
 import io
+import os
+import sys
 from io import UnsupportedOperation
 from tempfile import TemporaryFile
 
 import six
+
 import pytest
 from _pytest.compat import CaptureIO
 
@@ -654,7 +657,7 @@ class DontReadFromInput(six.Iterator):
         return self
 
     def fileno(self):
-        raise UnsupportedOperation("redirected stdin is pseudofile, " "has no fileno()")
+        raise UnsupportedOperation("redirected stdin is pseudofile, has no fileno()")
 
     def isatty(self):
         return False

src/_pytest/compat.py

@@ -1,7 +1,9 @@
 """
 python version compatibility code
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import codecs
 import functools
@@ -11,11 +13,12 @@ import sys
 from contextlib import contextmanager
 
 import py
+import six
+from six import text_type
 
 import _pytest
+from _pytest.outcomes import fail
 from _pytest.outcomes import TEST_OUTCOME
-from six import text_type
-import six
 
 try:
     import enum
@@ -23,8 +26,6 @@ except ImportError:  # pragma: no cover
     # Only available in Python 3.4+ or as a backport
     enum = None
 
-__all__ = ["Path"]
-
 _PY3 = sys.version_info > (3, 0)
 _PY2 = not _PY3
 
@@ -41,11 +42,6 @@ PY35 = sys.version_info[:2] >= (3, 5)
 PY36 = sys.version_info[:2] >= (3, 6)
 MODULE_NOT_FOUND_ERROR = "ModuleNotFoundError" if PY36 else "ImportError"
 
-if PY36:
-    from pathlib import Path
-else:
-    from pathlib2 import Path
-
 
 if _PY3:
     from collections.abc import MutableMapping as MappingMixin
@@ -56,6 +52,14 @@ else:
     from collections import Mapping, Sequence  # noqa
 
 
+if sys.version_info >= (3, 4):
+    from importlib.util import spec_from_file_location
+else:
+
+    def spec_from_file_location(*_, **__):
+        return None
+
+
 def _format_args(func):
     return str(signature(func))
 
@@ -130,9 +134,17 @@ def getfuncargnames(function, is_method=False, cls=None):
     # ordered mapping of parameter names to Parameter instances.  This
     # creates a tuple of the names of the parameters that don't have
     # defaults.
+    try:
+        parameters = signature(function).parameters
+    except (ValueError, TypeError) as e:
+        fail(
+            "Could not determine arguments of {!r}: {}".format(function, e),
+            pytrace=False,
+        )
+
     arg_names = tuple(
         p.name
-        for p in signature(function).parameters.values()
+        for p in parameters.values()
         if (
             p.kind is Parameter.POSITIONAL_OR_KEYWORD
             or p.kind is Parameter.KEYWORD_ONLY
@@ -267,7 +279,7 @@ def get_real_func(obj):
         obj = new_obj
     else:
         raise ValueError(
-            ("could not find real function of {start}" "\nstopped at {current}").format(
+            ("could not find real function of {start}\nstopped at {current}").format(
                 start=py.io.saferepr(start_obj), current=py.io.saferepr(obj)
             )
         )

src/_pytest/config/__init__.py

@@ -1,34 +1,38 @@
 """ command line options, ini-file and conftest.py processing. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import argparse
+import copy
 import inspect
+import os
 import shlex
-import traceback
+import sys
 import types
 import warnings
-import copy
-import six
-import py
 
-# DON't import pytest here because it causes import cycle troubles
-import sys
-import os
-from _pytest.outcomes import Skipped
+import py
+import six
+from pluggy import HookimplMarker
+from pluggy import HookspecMarker
+from pluggy import PluginManager
 
 import _pytest._code
-import _pytest.hookspec  # the extension point definitions
 import _pytest.assertion
-from pluggy import PluginManager, HookimplMarker, HookspecMarker
+import _pytest.hookspec  # the extension point definitions
+from .exceptions import PrintHelp
+from .exceptions import UsageError
+from .findpaths import determine_setup
+from .findpaths import exists
+from _pytest._code import ExceptionInfo
+from _pytest._code import filter_traceback
 from _pytest.compat import safe_str
-from .exceptions import UsageError, PrintHelp
-from .findpaths import determine_setup, exists
+from _pytest.outcomes import Skipped
 
 hookimpl = HookimplMarker("pytest")
 hookspec = HookspecMarker("pytest")
 
-# pytest startup
-#
-
 
 class ConftestImportFailure(Exception):
     def __init__(self, path, excinfo):
@@ -36,12 +40,6 @@ class ConftestImportFailure(Exception):
         self.path = path
         self.excinfo = excinfo
 
-    def __str__(self):
-        etype, evalue, etb = self.excinfo
-        formatted = traceback.format_tb(etb)
-        # The level of the tracebacks we want to print is hand crafted :(
-        return repr(evalue) + "\n" + "".join(formatted[2:])
-
 
 def main(args=None, plugins=None):
     """ return exit code, after performing an in-process test run.
@@ -57,10 +55,20 @@ def main(args=None, plugins=None):
         try:
             config = _prepareconfig(args, plugins)
         except ConftestImportFailure as e:
+            exc_info = ExceptionInfo(e.excinfo)
             tw = py.io.TerminalWriter(sys.stderr)
-            for line in traceback.format_exception(*e.excinfo):
+            tw.line(
+                "ImportError while loading conftest '{e.path}'.".format(e=e), red=True
+            )
+            exc_info.traceback = exc_info.traceback.filter(filter_traceback)
+            exc_repr = (
+                exc_info.getrepr(style="short", chain=False)
+                if exc_info.traceback
+                else exc_info.exconly()
+            )
+            formatted_tb = safe_str(exc_repr)
+            for line in formatted_tb.splitlines():
                 tw.line(line.rstrip(), red=True)
-            tw.line("ERROR: could not load %s\n" % (e.path,), red=True)
             return 4
         else:
             try:
@@ -351,6 +359,7 @@ class PytestPluginManager(PluginManager):
             else None
         )
         self._noconftest = namespace.noconftest
+        self._using_pyargs = namespace.pyargs
         testpaths = namespace.file_or_dir
         foundanchor = False
         for path in testpaths:
@@ -377,23 +386,25 @@ class PytestPluginManager(PluginManager):
     def _getconftestmodules(self, path):
         if self._noconftest:
             return []
+
         try:
             return self._path2confmods[path]
         except KeyError:
             if path.isfile():
-                clist = self._getconftestmodules(path.dirpath())
+                directory = path.dirpath()
             else:
-                # XXX these days we may rather want to use config.rootdir
-                # and allow users to opt into looking into the rootdir parent
-                # directories instead of requiring to specify confcutdir
-                clist = []
-                for parent in path.parts():
-                    if self._confcutdir and self._confcutdir.relto(parent):
-                        continue
-                    conftestpath = parent.join("conftest.py")
-                    if conftestpath.isfile():
-                        mod = self._importconftest(conftestpath)
-                        clist.append(mod)
+                directory = path
+            # XXX these days we may rather want to use config.rootdir
+            # and allow users to opt into looking into the rootdir parent
+            # directories instead of requiring to specify confcutdir
+            clist = []
+            for parent in directory.realpath().parts():
+                if self._confcutdir and self._confcutdir.relto(parent):
+                    continue
+                conftestpath = parent.join("conftest.py")
+                if conftestpath.isfile():
+                    mod = self._importconftest(conftestpath)
+                    clist.append(mod)
 
             self._path2confmods[path] = clist
             return clist
@@ -416,7 +427,11 @@ class PytestPluginManager(PluginManager):
                 _ensure_removed_sysmodule(conftestpath.purebasename)
             try:
                 mod = conftestpath.pyimport()
-                if hasattr(mod, "pytest_plugins") and self._configured:
+                if (
+                    hasattr(mod, "pytest_plugins")
+                    and self._configured
+                    and not self._using_pyargs
+                ):
                     from _pytest.deprecated import (
                         PYTEST_PLUGINS_FROM_NON_TOP_LEVEL_CONFTEST
                     )

src/_pytest/config/argparsing.py

@@ -1,11 +1,10 @@
-import six
-import warnings
 import argparse
-
-from gettext import gettext as _
 import sys as _sys
+import warnings
+from gettext import gettext as _
 
 import py
+import six
 
 from ..main import EXIT_USAGEERROR
 

src/_pytest/config/findpaths.py

@@ -1,5 +1,7 @@
-import py
 import os
+
+import py
+
 from .exceptions import UsageError
 
 
@@ -103,21 +105,18 @@ def determine_setup(inifile, args, rootdir_cmd_arg=None, config=None):
     if inifile:
         iniconfig = py.iniconfig.IniConfig(inifile)
         is_cfg_file = str(inifile).endswith(".cfg")
-        # TODO: [pytest] section in *.cfg files is depricated. Need refactoring.
         sections = ["tool:pytest", "pytest"] if is_cfg_file else ["pytest"]
         for section in sections:
             try:
                 inicfg = iniconfig[section]
                 if is_cfg_file and section == "pytest" and config is not None:
                     from _pytest.deprecated import CFG_PYTEST_SECTION
-                    from _pytest.warning_types import RemovedInPytest4Warning
                     from _pytest.warnings import _issue_config_warning
 
+                    # TODO: [pytest] section in *.cfg files is deprecated. Need refactoring once
+                    # the deprecation expires.
                     _issue_config_warning(
-                        RemovedInPytest4Warning(
-                            CFG_PYTEST_SECTION.format(filename=str(inifile))
-                        ),
-                        config,
+                        CFG_PYTEST_SECTION.format(filename=str(inifile)), config
                     )
                 break
             except KeyError:

src/_pytest/debugging.py

@@ -1,19 +1,15 @@
 """ interactive debugging with PDB, the Python Debugger. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import pdb
 import sys
-import os
 from doctest import UnexpectedException
 
+from _pytest import outcomes
 from _pytest.config import hookimpl
 
-try:
-    from builtins import breakpoint  # noqa
-
-    SUPPORTS_BREAKPOINT_BUILTIN = True
-except ImportError:
-    SUPPORTS_BREAKPOINT_BUILTIN = False
-
 
 def pytest_addoption(parser):
     group = parser.getgroup("general")
@@ -51,20 +47,12 @@ def pytest_configure(config):
     if config.getvalue("usepdb"):
         config.pluginmanager.register(PdbInvoke(), "pdbinvoke")
 
-    # Use custom Pdb class set_trace instead of default Pdb on breakpoint() call
-    if SUPPORTS_BREAKPOINT_BUILTIN:
-        _environ_pythonbreakpoint = os.environ.get("PYTHONBREAKPOINT", "")
-        if _environ_pythonbreakpoint == "":
-            sys.breakpointhook = pytestPDB.set_trace
-
     old = (pdb.set_trace, pytestPDB._pluginmanager)
 
     def fin():
         pdb.set_trace, pytestPDB._pluginmanager = old
         pytestPDB._config = None
         pytestPDB._pdb_cls = pdb.Pdb
-        if SUPPORTS_BREAKPOINT_BUILTIN:
-            sys.breakpointhook = sys.__breakpointhook__
 
     pdb.set_trace = pytestPDB.set_trace
     pytestPDB._pluginmanager = config.pluginmanager
@@ -109,9 +97,6 @@ class PdbInvoke(object):
         _enter_pdb(node, call.excinfo, report)
 
     def pytest_internalerror(self, excrepr, excinfo):
-        for line in str(excrepr).split("\n"):
-            sys.stderr.write("INTERNALERROR> %s\n" % line)
-            sys.stderr.flush()
         tb = _postmortem_traceback(excinfo)
         post_mortem(tb)
 
@@ -164,8 +149,9 @@ def _enter_pdb(node, excinfo, rep):
     rep.toterminal(tw)
     tw.sep(">", "entering PDB")
     tb = _postmortem_traceback(excinfo)
-    post_mortem(tb)
     rep._pdbshown = True
+    if post_mortem(tb):
+        outcomes.exit("Quitting debugger")
     return rep
 
 
@@ -196,3 +182,4 @@ def post_mortem(t):
     p = Pdb()
     p.reset()
     p.interaction(None, t)
+    return p.quitting

src/_pytest/deprecated.py

@@ -4,10 +4,17 @@ that is planned to be removed in the next pytest release.
 
 Keeping it in a central location makes it easy to track what is deprecated and should
 be removed when the time comes.
+
+All constants defined in this module should be either PytestWarning instances or UnformattedWarning
+in case of warnings which need to format their messages.
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 from _pytest.warning_types import RemovedInPytest4Warning
+from _pytest.warning_types import UnformattedWarning
+
 
 MAIN_STR_ARGS = RemovedInPytest4Warning(
     "passing a string to pytest.main() is deprecated, "
@@ -18,25 +25,48 @@ YIELD_TESTS = RemovedInPytest4Warning(
     "yield tests are deprecated, and scheduled to be removed in pytest 4.0"
 )
 
-FUNCARG_PREFIX = (
+CACHED_SETUP = RemovedInPytest4Warning(
+    "cached_setup is deprecated and will be removed in a future release. "
+    "Use standard fixture functions instead."
+)
+
+COMPAT_PROPERTY = UnformattedWarning(
+    RemovedInPytest4Warning,
+    "usage of {owner}.{name} is deprecated, please use pytest.{name} instead",
+)
+
+CUSTOM_CLASS = UnformattedWarning(
+    RemovedInPytest4Warning,
+    'use of special named "{name}" objects in collectors of type "{type_name}" to '
+    "customize the created nodes is deprecated. "
+    "Use pytest_pycollect_makeitem(...) to create custom "
+    "collection nodes instead.",
+)
+
+FUNCARG_PREFIX = UnformattedWarning(
+    RemovedInPytest4Warning,
     '{name}: declaring fixtures using "pytest_funcarg__" prefix is deprecated '
     "and scheduled to be removed in pytest 4.0.  "
-    "Please remove the prefix and use the @pytest.fixture decorator instead."
+    "Please remove the prefix and use the @pytest.fixture decorator instead.",
 )
 
-FIXTURE_FUNCTION_CALL = (
+FIXTURE_FUNCTION_CALL = UnformattedWarning(
+    RemovedInPytest4Warning,
     'Fixture "{name}" called directly. Fixtures are not meant to be called directly, '
     "are created automatically when test functions request them as parameters. "
-    "See https://docs.pytest.org/en/latest/fixture.html for more information."
+    "See https://docs.pytest.org/en/latest/fixture.html for more information.",
 )
 
-CFG_PYTEST_SECTION = (
-    "[pytest] section in {filename} files is deprecated, use [tool:pytest] instead."
+CFG_PYTEST_SECTION = UnformattedWarning(
+    RemovedInPytest4Warning,
+    "[pytest] section in {filename} files is deprecated, use [tool:pytest] instead.",
 )
 
-GETFUNCARGVALUE = "getfuncargvalue is deprecated, use getfixturevalue"
+GETFUNCARGVALUE = RemovedInPytest4Warning(
+    "getfuncargvalue is deprecated, use getfixturevalue"
+)
 
-RESULT_LOG = (
+RESULT_LOG = RemovedInPytest4Warning(
     "--result-log is deprecated and scheduled for removal in pytest 4.0.\n"
     "See https://docs.pytest.org/en/latest/usage.html#creating-resultlog-format-files for more information."
 )
@@ -64,7 +94,7 @@ RECORD_XML_PROPERTY = RemovedInPytest4Warning(
 )
 
 COLLECTOR_MAKEITEM = RemovedInPytest4Warning(
-    "pycollector makeitem was removed " "as it is an accidentially leaked internal api"
+    "pycollector makeitem was removed as it is an accidentially leaked internal api"
 )
 
 METAFUNC_ADD_CALL = RemovedInPytest4Warning(
@@ -81,3 +111,8 @@ PYTEST_PLUGINS_FROM_NON_TOP_LEVEL_CONFTEST = RemovedInPytest4Warning(
 PYTEST_NAMESPACE = RemovedInPytest4Warning(
     "pytest_namespace is deprecated and will be removed soon"
 )
+
+PYTEST_ENSURETEMP = RemovedInPytest4Warning(
+    "pytest/tmpdir_factory.ensuretemp is deprecated, \n"
+    "please use the tmp_path fixture or tmp_path_factory.mktemp"
+)

src/_pytest/doctest.py

@@ -1,12 +1,16 @@
 """ discover and run doctests in modules and test files."""
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
-import traceback
-import sys
 import platform
+import sys
+import traceback
 
 import pytest
-from _pytest._code.code import ExceptionInfo, ReprFileLocation, TerminalRepr
+from _pytest._code.code import ExceptionInfo
+from _pytest._code.code import ReprFileLocation
+from _pytest._code.code import TerminalRepr
 from _pytest.fixtures import FixtureRequest
 
 

src/_pytest/fixtures.py

@@ -1,39 +1,41 @@
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import functools
 import inspect
 import sys
 import warnings
-from collections import OrderedDict, deque, defaultdict
-
-import six
-from more_itertools import flatten
+from collections import defaultdict
+from collections import deque
+from collections import OrderedDict
 
 import attr
 import py
+import six
+from more_itertools import flatten
 from py._code.code import FormattedExcinfo
 
 import _pytest
 from _pytest import nodes
 from _pytest._code.code import TerminalRepr
-from _pytest.compat import (
-    NOTSET,
-    exc_clear,
-    _format_args,
-    getfslineno,
-    get_real_func,
-    is_generator,
-    isclass,
-    getimfunc,
-    getlocation,
-    getfuncargnames,
-    safe_getattr,
-    FuncargnamesCompatAttr,
-    get_real_method,
-    _PytestWrapper,
-)
-from _pytest.deprecated import FIXTURE_FUNCTION_CALL, RemovedInPytest4Warning
-from _pytest.outcomes import fail, TEST_OUTCOME
+from _pytest.compat import _format_args
+from _pytest.compat import _PytestWrapper
+from _pytest.compat import exc_clear
+from _pytest.compat import FuncargnamesCompatAttr
+from _pytest.compat import get_real_func
+from _pytest.compat import get_real_method
+from _pytest.compat import getfslineno
+from _pytest.compat import getfuncargnames
+from _pytest.compat import getimfunc
+from _pytest.compat import getlocation
+from _pytest.compat import is_generator
+from _pytest.compat import isclass
+from _pytest.compat import NOTSET
+from _pytest.compat import safe_getattr
+from _pytest.deprecated import FIXTURE_FUNCTION_CALL
+from _pytest.outcomes import fail
+from _pytest.outcomes import TEST_OUTCOME
 
 FIXTURE_MSG = 'fixtures cannot have "pytest_funcarg__" prefix and be decorated with @pytest.fixture:\n{}'
 
@@ -359,8 +361,10 @@ class FixtureRequest(FuncargnamesCompatAttr):
 
     @property
     def fixturenames(self):
-        # backward incompatible note: now a readonly property
-        return list(self._pyfuncitem._fixtureinfo.names_closure)
+        """names of all active fixtures in this request"""
+        result = list(self._pyfuncitem._fixtureinfo.names_closure)
+        result.extend(set(self._fixture_defs).difference(result))
+        return result
 
     @property
     def node(self):
@@ -479,6 +483,9 @@ class FixtureRequest(FuncargnamesCompatAttr):
             or ``session`` indicating the caching lifecycle of the resource.
         :arg extrakey: added to internal caching key of (funcargname, scope).
         """
+        from _pytest.deprecated import CACHED_SETUP
+
+        warnings.warn(CACHED_SETUP, stacklevel=2)
         if not hasattr(self.config, "_setupcache"):
             self.config._setupcache = {}  # XXX weakref?
         cachekey = (self.fixturename, self._getscopeitem(scope), extrakey)
@@ -512,7 +519,7 @@ class FixtureRequest(FuncargnamesCompatAttr):
         """ Deprecated, use getfixturevalue. """
         from _pytest import deprecated
 
-        warnings.warn(deprecated.GETFUNCARGVALUE, DeprecationWarning, stacklevel=2)
+        warnings.warn(deprecated.GETFUNCARGVALUE, stacklevel=2)
         return self.getfixturevalue(argname)
 
     def _get_active_fixturedef(self, argname):
@@ -562,7 +569,20 @@ class FixtureRequest(FuncargnamesCompatAttr):
         except (AttributeError, ValueError):
             param = NOTSET
             param_index = 0
-            if fixturedef.params is not None:
+            has_params = fixturedef.params is not None
+            fixtures_not_supported = getattr(funcitem, "nofuncargs", False)
+            if has_params and fixtures_not_supported:
+                msg = (
+                    "{name} does not support fixtures, maybe unittest.TestCase subclass?\n"
+                    "Node id: {nodeid}\n"
+                    "Function type: {typename}"
+                ).format(
+                    name=funcitem.name,
+                    nodeid=funcitem.nodeid,
+                    typename=type(funcitem).__name__,
+                )
+                fail(msg, pytrace=False)
+            if has_params:
                 frame = inspect.stack()[3]
                 frameinfo = inspect.getframeinfo(frame[0])
                 source_path = frameinfo.filename
@@ -571,16 +591,18 @@ class FixtureRequest(FuncargnamesCompatAttr):
                 if source_path.relto(funcitem.config.rootdir):
                     source_path = source_path.relto(funcitem.config.rootdir)
                 msg = (
-                    "The requested fixture has no parameter defined for the "
-                    "current test.\n\nRequested fixture '{}' defined in:\n{}"
+                    "The requested fixture has no parameter defined for test:\n"
+                    "    {}\n\n"
+                    "Requested fixture '{}' defined in:\n{}"
                     "\n\nRequested here:\n{}:{}".format(
+                        funcitem.nodeid,
                         fixturedef.argname,
                         getlocation(fixturedef.func, funcitem.config.rootdir),
                         source_path,
                         source_lineno,
                     )
                 )
-                fail(msg)
+                fail(msg, pytrace=False)
         else:
             # indices might not be set if old-style metafunc.addcall() was used
             param_index = funcitem.callspec.indices.get(argname, 0)
@@ -698,10 +720,11 @@ def scope2index(scope, descr, where=None):
     try:
         return scopes.index(scope)
     except ValueError:
-        raise ValueError(
-            "{} {}has an unsupported scope value '{}'".format(
+        fail(
+            "{} {}got an unexpected scope value '{}'".format(
                 descr, "from {} ".format(where) if where else "", scope
-            )
+            ),
+            pytrace=False,
         )
 
 
@@ -741,14 +764,19 @@ class FixtureLookupError(LookupError):
 
         if msg is None:
             fm = self.request._fixturemanager
-            available = []
+            available = set()
             parentid = self.request._pyfuncitem.parent.nodeid
             for name, fixturedefs in fm._arg2fixturedefs.items():
                 faclist = list(fm._matchfactories(fixturedefs, parentid))
-                if faclist and name not in available:
-                    available.append(name)
-            msg = "fixture %r not found" % (self.argname,)
-            msg += "\n available fixtures: %s" % (", ".join(sorted(available)),)
+                if faclist:
+                    available.add(name)
+            if self.argname in available:
+                msg = " recursive dependency involving fixture '{}' detected".format(
+                    self.argname
+                )
+            else:
+                msg = "fixture '{}' not found".format(self.argname)
+            msg += "\n available fixtures: {}".format(", ".join(sorted(available)))
             msg += "\n use 'pytest --fixtures [testpath]' for help on them."
 
         return FixtureLookupErrorRepr(fspath, lineno, tblines, msg, self.argname)
@@ -834,7 +862,9 @@ class FixtureDef(object):
         self.argname = argname
         self.scope = scope
         self.scopenum = scope2index(
-            scope or "function", descr="fixture {}".format(func.__name__), where=baseid
+            scope or "function",
+            descr="Fixture '{}'".format(func.__name__),
+            where=baseid,
         )
         self.params = params
         self.argnames = getfuncargnames(func, is_method=unittest)
@@ -896,7 +926,7 @@ class FixtureDef(object):
         return hook.pytest_fixture_setup(fixturedef=self, request=request)
 
     def __repr__(self):
-        return "<FixtureDef name=%r scope=%r baseid=%r >" % (
+        return "<FixtureDef name=%r scope=%r baseid=%r>" % (
             self.argname,
             self.scope,
             self.baseid,
@@ -956,8 +986,9 @@ def wrap_function_to_warning_if_called_directly(function, fixture_marker):
     used as an argument in a test function.
     """
     is_yield_function = is_generator(function)
-    msg = FIXTURE_FUNCTION_CALL.format(name=fixture_marker.name or function.__name__)
-    warning = RemovedInPytest4Warning(msg)
+    warning = FIXTURE_FUNCTION_CALL.format(
+        name=fixture_marker.name or function.__name__
+    )
 
     if is_yield_function:
 
@@ -996,7 +1027,7 @@ class FixtureFunctionMarker(object):
 
     def __call__(self, function):
         if isclass(function):
-            raise ValueError("class fixtures not supported (may be in the future)")
+            raise ValueError("class fixtures not supported (maybe in the future)")
 
         if getattr(function, "_pytestfixturefunction", False):
             raise ValueError(
@@ -1151,7 +1182,7 @@ class FixtureManager(object):
     def pytest_plugin_registered(self, plugin):
         nodeid = None
         try:
-            p = py.path.local(plugin.__file__)
+            p = py.path.local(plugin.__file__).realpath()
         except AttributeError:
             pass
         else:
@@ -1284,9 +1315,7 @@ class FixtureManager(object):
 
                 filename, lineno = getfslineno(obj)
                 warnings.warn_explicit(
-                    RemovedInPytest4Warning(
-                        deprecated.FUNCARG_PREFIX.format(name=name)
-                    ),
+                    deprecated.FUNCARG_PREFIX.format(name=name),
                     category=None,
                     filename=str(filename),
                     lineno=lineno + 1,
@@ -1349,8 +1378,7 @@ class FixtureManager(object):
             fixturedefs = self._arg2fixturedefs[argname]
         except KeyError:
             return None
-        else:
-            return tuple(self._matchfactories(fixturedefs, nodeid))
+        return tuple(self._matchfactories(fixturedefs, nodeid))
 
     def _matchfactories(self, fixturedefs, nodeid):
         for fixturedef in fixturedefs:

src/_pytest/freeze_support.py

@@ -2,7 +2,9 @@
 Provides a function to report all internal modules for using freezing tools
 pytest
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 
 def freeze_includes():

src/_pytest/helpconfig.py

@@ -1,13 +1,17 @@
 """ version info, help messages, tracing configuration.  """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
-import py
-import pytest
-from _pytest.config import PrintHelp
 import os
 import sys
 from argparse import Action
 
+import py
+
+import pytest
+from _pytest.config import PrintHelp
+
 
 class HelpAction(Action):
     """This is an argparse Action that will raise an exception in
@@ -139,7 +143,7 @@ def showhelp(config):
     tw.line()
     tw.line()
     tw.line(
-        "[pytest] ini-options in the first " "pytest.ini|tox.ini|setup.cfg file found:"
+        "[pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg file found:"
     )
     tw.line()
 

src/_pytest/hookspec.py

@@ -1,6 +1,6 @@
 """ hook specifications for pytest plugins, invoked from main.py and builtin plugins.  """
-
 from pluggy import HookspecMarker
+
 from .deprecated import PYTEST_NAMESPACE
 
 
@@ -562,6 +562,9 @@ def pytest_warning_captured(warning_message, when, item):
         * ``"runtest"``: during test execution.
 
     :param pytest.Item|None item:
+        **DEPRECATED**: This parameter is incompatible with ``pytest-xdist``, and will always receive ``None``
+        in a future release.
+
         The item being executed if ``when`` is ``"runtest"``, otherwise ``None``.
     """
 

src/_pytest/junitxml.py

@@ -8,14 +8,18 @@ Based on initial code from Ross Lawley.
 Output conforms to https://github.com/jenkinsci/xunit-plugin/blob/master/
 src/main/resources/org/jenkinsci/plugins/xunit/types/model/xsd/junit-10.xsd
 """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import functools
-import py
 import os
 import re
 import sys
 import time
+
+import py
+
 import pytest
 from _pytest import nodes
 from _pytest.config import filename_arg
@@ -38,7 +42,7 @@ class Junit(py.xml.Namespace):
 # this dynamically instead of hardcoding it.  The spec range of valid
 # chars is: Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD]
 #                    | [#x10000-#x10FFFF]
-_legal_chars = (0x09, 0x0A, 0x0d)
+_legal_chars = (0x09, 0x0A, 0x0D)
 _legal_ranges = ((0x20, 0x7E), (0x80, 0xD7FF), (0xE000, 0xFFFD), (0x10000, 0x10FFFF))
 _legal_xml_re = [
     unicode("%s-%s") % (unichr(low), unichr(high))
@@ -221,12 +225,14 @@ class _NodeReporter(object):
         else:
             filename, lineno, skipreason = report.longrepr
             if skipreason.startswith("Skipped: "):
-                skipreason = bin_xml_escape(skipreason[9:])
+                skipreason = skipreason[9:]
+            details = "%s:%s: %s" % (filename, lineno, skipreason)
+
             self.append(
                 Junit.skipped(
-                    "%s:%s: %s" % (filename, lineno, skipreason),
+                    bin_xml_escape(details),
                     type="pytest.skip",
-                    message=skipreason,
+                    message=bin_xml_escape(skipreason),
                 )
             )
             self.write_captured_output(report)

src/_pytest/logging.py

@@ -1,15 +1,18 @@
 """ Access and control log capturing. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import logging
-from contextlib import closing, contextmanager
 import re
+from contextlib import contextmanager
+
+import py
 import six
 
+import pytest
 from _pytest.compat import dummy_context_manager
 from _pytest.config import create_terminal_writer
-import pytest
-import py
 
 
 DEFAULT_LOG_FORMAT = "%(filename)-25s %(lineno)4d %(levelname)-8s %(message)s"
@@ -213,7 +216,8 @@ class LogCaptureFixture(object):
     def __init__(self, item):
         """Creates a new funcarg."""
         self._item = item
-        self._initial_log_levels = {}  # type: Dict[str, int] # dict of log name -> log level
+        # dict of log name -> log level
+        self._initial_log_levels = {}  # type: Dict[str, int]
 
     def _finalize(self):
         """Finalizes the fixture.
@@ -262,7 +266,7 @@ class LogCaptureFixture(object):
 
     @property
     def record_tuples(self):
-        """Returns a list of a striped down version of log records intended
+        """Returns a list of a stripped down version of log records intended
         for use in assertion comparison.
 
         The format of the tuple is:
@@ -278,7 +282,7 @@ class LogCaptureFixture(object):
         Unlike 'records', which contains the format string and parameters for interpolation, log messages in this list
         are all interpolated.
         Unlike 'text', which contains the output from the handler, log messages in this list are unadorned with
-        levels, timestamps, etc, making exact comparisions more reliable.
+        levels, timestamps, etc, making exact comparisons more reliable.
 
         Note that traceback or stack info (from :func:`logging.exception` or the `exc_info` or `stack_info` arguments
         to the logging functions) is not included, as this is added by the formatter in the handler.
@@ -329,7 +333,7 @@ class LogCaptureFixture(object):
 def caplog(request):
     """Access and control log capturing.
 
-    Captured logs are available through the following methods::
+    Captured logs are available through the following properties/methods::
 
     * caplog.text            -> string containing formatted log output
     * caplog.records         -> list of logging.LogRecord instances
@@ -414,7 +418,6 @@ class LoggingPlugin(object):
         else:
             self.log_file_handler = None
 
-        # initialized during pytest_runtestloop
         self.log_cli_handler = None
 
     def _log_cli_enabled(self):
@@ -425,6 +428,22 @@ class LoggingPlugin(object):
             "--log-cli-level"
         ) is not None or self._config.getini("log_cli")
 
+    @pytest.hookimpl(hookwrapper=True, tryfirst=True)
+    def pytest_collection(self):
+        # This has to be called before the first log message is logged,
+        # so we can access the terminal reporter plugin.
+        self._setup_cli_logging()
+
+        with self.live_logs_context():
+            if self.log_cli_handler:
+                self.log_cli_handler.set_when("collection")
+
+            if self.log_file_handler is not None:
+                with catching_logs(self.log_file_handler, level=self.log_file_level):
+                    yield
+            else:
+                yield
+
     @contextmanager
     def _runtest_for(self, item, when):
         """Implements the internals of pytest_runtest_xxx() hook."""
@@ -445,8 +464,8 @@ class LoggingPlugin(object):
             try:
                 yield  # run test
             finally:
-                del item.catch_log_handler
                 if when == "teardown":
+                    del item.catch_log_handler
                     del item.catch_log_handlers
 
             if self.print_logs:
@@ -481,25 +500,41 @@ class LoggingPlugin(object):
         with self._runtest_for(None, "finish"):
             yield
 
+    @pytest.hookimpl(hookwrapper=True, tryfirst=True)
+    def pytest_sessionfinish(self):
+        with self.live_logs_context():
+            if self.log_cli_handler:
+                self.log_cli_handler.set_when("sessionfinish")
+            if self.log_file_handler is not None:
+                with catching_logs(self.log_file_handler, level=self.log_file_level):
+                    yield
+            else:
+                yield
+
+    @pytest.hookimpl(hookwrapper=True, tryfirst=True)
+    def pytest_sessionstart(self):
+        self._setup_cli_logging()
+        with self.live_logs_context():
+            if self.log_cli_handler:
+                self.log_cli_handler.set_when("sessionstart")
+            if self.log_file_handler is not None:
+                with catching_logs(self.log_file_handler, level=self.log_file_level):
+                    yield
+            else:
+                yield
+
     @pytest.hookimpl(hookwrapper=True)
     def pytest_runtestloop(self, session):
         """Runs all collected test items."""
-        self._setup_cli_logging()
-        with self.live_logs_context:
+        with self.live_logs_context():
             if self.log_file_handler is not None:
-                with closing(self.log_file_handler):
-                    with catching_logs(
-                        self.log_file_handler, level=self.log_file_level
-                    ):
-                        yield  # run all the tests
+                with catching_logs(self.log_file_handler, level=self.log_file_level):
+                    yield  # run all the tests
             else:
                 yield  # run all the tests
 
     def _setup_cli_logging(self):
-        """Sets up the handler and logger for the Live Logs feature, if enabled.
-
-        This must be done right before starting the loop so we can access the terminal reporter plugin.
-        """
+        """Sets up the handler and logger for the Live Logs feature, if enabled."""
         terminal_reporter = self._config.pluginmanager.get_plugin("terminalreporter")
         if self._log_cli_enabled() and terminal_reporter is not None:
             capture_manager = self._config.pluginmanager.get_plugin("capturemanager")
@@ -529,11 +564,14 @@ class LoggingPlugin(object):
                 self._config, "log_cli_level", "log_level"
             )
             self.log_cli_handler = log_cli_handler
-            self.live_logs_context = catching_logs(
+            self.live_logs_context = lambda: catching_logs(
                 log_cli_handler, formatter=log_cli_formatter, level=log_cli_level
             )
         else:
-            self.live_logs_context = dummy_context_manager()
+            self.live_logs_context = lambda: dummy_context_manager()
+        # Note that the lambda for the live_logs_context is needed because
+        # live_logs_context can otherwise not be entered multiple times due
+        # to limitations of contextlib.contextmanager
 
 
 class _LiveLoggingStreamHandler(logging.StreamHandler):

src/_pytest/main.py

@@ -1,19 +1,22 @@
 """ core implementation of testing process: init, session, runtest loop. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import contextlib
 import functools
 import os
 import pkgutil
-import six
 import sys
 
-import _pytest
-from _pytest import nodes
-import _pytest._code
 import py
+import six
 
-from _pytest.config import directory_arg, UsageError, hookimpl
+import _pytest._code
+from _pytest import nodes
+from _pytest.config import directory_arg
+from _pytest.config import hookimpl
+from _pytest.config import UsageError
 from _pytest.outcomes import exit
 from _pytest.runner import collect_one_node
 
@@ -156,7 +159,10 @@ def pytest_addoption(parser):
         dest="basetemp",
         default=None,
         metavar="dir",
-        help="base temporary directory for this test run.",
+        help=(
+            "base temporary directory for this test run."
+            "(warning: this directory is removed if it exists)"
+        ),
     )
 
 
@@ -182,10 +188,13 @@ def wrap_session(config, doit):
             session.exitstatus = EXIT_TESTSFAILED
         except KeyboardInterrupt:
             excinfo = _pytest._code.ExceptionInfo()
-            if initstate < 2 and isinstance(excinfo.value, exit.Exception):
+            exitstatus = EXIT_INTERRUPTED
+            if initstate <= 2 and isinstance(excinfo.value, exit.Exception):
                 sys.stderr.write("{}: {}\n".format(excinfo.typename, excinfo.value.msg))
+                if excinfo.value.returncode is not None:
+                    exitstatus = excinfo.value.returncode
             config.hook.pytest_keyboard_interrupt(excinfo=excinfo)
-            session.exitstatus = EXIT_INTERRUPTED
+            session.exitstatus = exitstatus
         except:  # noqa
             excinfo = _pytest._code.ExceptionInfo()
             config.notify_exception(excinfo, config.option)
@@ -487,7 +496,7 @@ class Session(nodes.FSCollector):
         from _pytest.python import Package
 
         names = self._parsearg(arg)
-        argpath = names.pop(0)
+        argpath = names.pop(0).realpath()
         paths = []
 
         root = self
@@ -504,13 +513,14 @@ class Session(nodes.FSCollector):
                     pkginit = parent.join("__init__.py")
                     if pkginit.isfile():
                         if pkginit in self._node_cache:
-                            root = self._node_cache[pkginit]
+                            root = self._node_cache[pkginit][0]
                         else:
                             col = root._collectfile(pkginit)
                             if col:
                                 if isinstance(col[0], Package):
                                     root = col[0]
-                                self._node_cache[root.fspath] = root
+                                # always store a list in the cache, matchnodes expects it
+                                self._node_cache[root.fspath] = [root]
 
         # If it's a directory argument, recurse and look for any Subpackages.
         # Let the Package collector deal with subnodes, don't collect here.
@@ -530,8 +540,8 @@ class Session(nodes.FSCollector):
                         if (type(x), x.fspath) in self._node_cache:
                             yield self._node_cache[(type(x), x.fspath)]
                         else:
-                            yield x
                             self._node_cache[(type(x), x.fspath)] = x
+                            yield x
         else:
             assert argpath.check(file=1)
 
@@ -563,9 +573,7 @@ class Session(nodes.FSCollector):
         return True
 
     def _tryconvertpyarg(self, x):
-        """Convert a dotted module name to path.
-
-        """
+        """Convert a dotted module name to path."""
         try:
             with _patched_find_module():
                 loader = pkgutil.find_loader(x)
@@ -597,8 +605,7 @@ class Session(nodes.FSCollector):
                 raise UsageError(
                     "file or package not found: " + arg + " (missing __init__.py?)"
                 )
-            else:
-                raise UsageError("file not found: " + arg)
+            raise UsageError("file not found: " + arg)
         parts[0] = path
         return parts
 

src/_pytest/mark/__init__.py

@@ -1,18 +1,20 @@
 """ generic mechanism for marking and selecting python functions. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+from .legacy import matchkeyword
+from .legacy import matchmark
+from .structures import EMPTY_PARAMETERSET_OPTION
+from .structures import get_empty_parameterset_mark
+from .structures import Mark
+from .structures import MARK_GEN
+from .structures import MarkDecorator
+from .structures import MarkGenerator
+from .structures import MarkInfo
+from .structures import ParameterSet
+from .structures import transfer_markers
 from _pytest.config import UsageError
-from .structures import (
-    ParameterSet,
-    EMPTY_PARAMETERSET_OPTION,
-    MARK_GEN,
-    Mark,
-    MarkInfo,
-    MarkDecorator,
-    MarkGenerator,
-    transfer_markers,
-    get_empty_parameterset_mark,
-)
-from .legacy import matchkeyword, matchmark
 
 __all__ = [
     "Mark",
@@ -24,11 +26,6 @@ __all__ = [
 ]
 
 
-class MarkerError(Exception):
-
-    """Error in use of a pytest marker/attribute."""
-
-
 def param(*values, **kw):
     """Specify a parameter in `pytest.mark.parametrize`_ calls or
     :ref:`parametrized fixtures <fixture-parametrize-marks>`.
@@ -163,9 +160,9 @@ def pytest_configure(config):
 
     empty_parameterset = config.getini(EMPTY_PARAMETERSET_OPTION)
 
-    if empty_parameterset not in ("skip", "xfail", None, ""):
+    if empty_parameterset not in ("skip", "xfail", "fail_at_collect", None, ""):
         raise UsageError(
-            "{!s} must be one of skip and xfail,"
+            "{!s} must be one of skip, xfail or fail_at_collect"
             " but it is {!r}".format(EMPTY_PARAMETERSET_OPTION, empty_parameterset)
         )
 

src/_pytest/mark/evaluate.py

@@ -1,10 +1,12 @@
 import os
-import six
-import sys
 import platform
+import sys
 import traceback
 
-from ..outcomes import fail, TEST_OUTCOME
+import six
+
+from ..outcomes import fail
+from ..outcomes import TEST_OUTCOME
 
 
 def cached_eval(config, expr, d):
@@ -90,7 +92,10 @@ class MarkEvaluator(object):
                     else:
                         if "reason" not in mark.kwargs:
                             # XXX better be checked at collection time
-                            msg = "you need to specify reason=STRING " "when using booleans as conditions."
+                            msg = (
+                                "you need to specify reason=STRING "
+                                "when using booleans as conditions."
+                            )
                             fail(msg)
                         result = bool(expr)
                     if result:

src/_pytest/mark/legacy.py

@@ -2,9 +2,10 @@
 this is a place where we put datastructures used by legacy apis
 we hope ot remove
 """
-import attr
 import keyword
 
+import attr
+
 from _pytest.config import UsageError
 
 
@@ -66,7 +67,10 @@ python_keywords_allowed_list = ["or", "and", "not"]
 
 def matchmark(colitem, markexpr):
     """Tries to match on any marker names, attached to the given colitem."""
-    return eval(markexpr, {}, MarkMapping.from_item(colitem))
+    try:
+        return eval(markexpr, {}, MarkMapping.from_item(colitem))
+    except SyntaxError as e:
+        raise SyntaxError(str(e) + "\nMarker expression must be valid Python!")
 
 
 def matchkeyword(colitem, keywordexpr):

src/_pytest/mark/structures.py

@@ -5,11 +5,15 @@ from functools import reduce
 from operator import attrgetter
 
 import attr
-
-from ..deprecated import MARK_PARAMETERSET_UNPACKING, MARK_INFO_ATTRIBUTE
-from ..compat import NOTSET, getfslineno, MappingMixin
 from six.moves import map
 
+from ..compat import getfslineno
+from ..compat import MappingMixin
+from ..compat import NOTSET
+from ..deprecated import MARK_INFO_ATTRIBUTE
+from ..deprecated import MARK_PARAMETERSET_UNPACKING
+from _pytest.outcomes import fail
+
 
 EMPTY_PARAMETERSET_OPTION = "empty_parameter_set_mark"
 
@@ -32,11 +36,19 @@ def istestfunc(func):
 
 
 def get_empty_parameterset_mark(config, argnames, func):
+    from ..nodes import Collector
+
     requested_mark = config.getini(EMPTY_PARAMETERSET_OPTION)
     if requested_mark in ("", None, "skip"):
         mark = MARK_GEN.skip
     elif requested_mark == "xfail":
         mark = MARK_GEN.xfail(run=False)
+    elif requested_mark == "fail_at_collect":
+        f_name = func.__name__
+        _, lineno = getfslineno(func)
+        raise Collector.CollectError(
+            "Empty parameter set in '%s' at line %d" % (f_name, lineno)
+        )
     else:
         raise LookupError(requested_mark)
     fs, lineno = getfslineno(func)
@@ -307,7 +319,7 @@ def _marked(func, mark):
     return any(mark == info.combined for info in func_mark)
 
 
-@attr.s
+@attr.s(repr=False)
 class MarkInfo(object):
     """ Marking object created by :class:`MarkDecorator` instances. """
 
@@ -385,7 +397,7 @@ class MarkGenerator(object):
             x = marker.split("(", 1)[0]
             values.add(x)
         if name not in self._markers:
-            raise AttributeError("%r not a registered marker" % (name,))
+            fail("{!r} not a registered marker".format(name), pytrace=False)
 
 
 MARK_GEN = MarkGenerator()

src/_pytest/monkeypatch.py

@@ -1,12 +1,17 @@
 """ monkeypatching and mocking functionality.  """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import os
-import sys
 import re
+import sys
+import warnings
 from contextlib import contextmanager
 
 import six
+
+import pytest
 from _pytest.fixtures import fixture
 
 RE_IMPORT_ERROR_NAME = re.compile("^No module named (.*)$")
@@ -209,22 +214,41 @@ class MonkeyPatch(object):
             self._setitem.append((dic, name, dic.get(name, notset)))
             del dic[name]
 
+    def _warn_if_env_name_is_not_str(self, name):
+        """On Python 2, warn if the given environment variable name is not a native str (#4056)"""
+        if six.PY2 and not isinstance(name, str):
+            warnings.warn(
+                pytest.PytestWarning(
+                    "Environment variable name {!r} should be str".format(name)
+                )
+            )
+
     def setenv(self, name, value, prepend=None):
         """ Set environment variable ``name`` to ``value``.  If ``prepend``
         is a character, read the current environment variable value
         and prepend the ``value`` adjoined with the ``prepend`` character."""
-        value = str(value)
+        if not isinstance(value, str):
+            warnings.warn(
+                pytest.PytestWarning(
+                    "Environment variable value {!r} should be str, converted to str implicitly".format(
+                        value
+                    )
+                )
+            )
+            value = str(value)
         if prepend and name in os.environ:
             value = value + prepend + os.environ[name]
+        self._warn_if_env_name_is_not_str(name)
         self.setitem(os.environ, name, value)
 
     def delenv(self, name, raising=True):
-        """ Delete ``name`` from the environment. Raise KeyError it does not
-        exist.
+        """ Delete ``name`` from the environment. Raise KeyError if it does
+        not exist.
 
         If ``raising`` is set to False, no exception will be raised if the
         environment variable is missing.
         """
+        self._warn_if_env_name_is_not_str(name)
         self.delitem(os.environ, name, raising=raising)
 
     def syspath_prepend(self, path):

src/_pytest/nodes.py

@@ -1,16 +1,19 @@
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 import warnings
 
-import six
-import py
 import attr
+import py
+import six
 
-import _pytest
 import _pytest._code
 from _pytest.compat import getfslineno
-
-from _pytest.mark.structures import NodeKeywords, MarkInfo
+from _pytest.mark.structures import MarkInfo
+from _pytest.mark.structures import NodeKeywords
+from _pytest.outcomes import fail
 
 SEP = "/"
 
@@ -61,11 +64,11 @@ class _CompatProperty(object):
         if obj is None:
             return self
 
-        # TODO: reenable in the features branch
-        # warnings.warn(
-        #     "usage of {owner!r}.{name} is deprecated, please use pytest.{name} instead".format(
-        #         name=self.name, owner=type(owner).__name__),
-        #     PendingDeprecationWarning, stacklevel=2)
+        from _pytest.deprecated import COMPAT_PROPERTY
+
+        warnings.warn(
+            COMPAT_PROPERTY.format(name=self.name, owner=owner.__name__), stacklevel=2
+        )
         return getattr(__import__("pytest"), self.name)
 
 
@@ -126,11 +129,10 @@ class Node(object):
         if isinstance(maybe_compatprop, _CompatProperty):
             return getattr(__import__("pytest"), name)
         else:
+            from _pytest.deprecated import CUSTOM_CLASS
+
             cls = getattr(self, name)
-            # TODO: reenable in the features branch
-            # warnings.warn("use of node.%s is deprecated, "
-            #    "use pytest_pycollect_makeitem(...) to create custom "
-            #    "collection nodes" % name, category=DeprecationWarning)
+            self.warn(CUSTOM_CLASS.format(name=name, type_name=type(self).__name__))
         return cls
 
     def __repr__(self):
@@ -347,6 +349,9 @@ class Node(object):
         pass
 
     def _repr_failure_py(self, excinfo, style=None):
+        if excinfo.errisinstance(fail.Exception):
+            if not excinfo.value.pytrace:
+                return six.text_type(excinfo.value)
         fm = self.session._fixturemanager
         if excinfo.errisinstance(fm.FixtureLookupError):
             return excinfo.value.formatrepr()

src/_pytest/nose.py

@@ -1,9 +1,13 @@
 """ run test suites written for nose. """
-from __future__ import absolute_import, division, print_function
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import sys
 
-from _pytest import unittest, runner, python
+from _pytest import python
+from _pytest import runner
+from _pytest import unittest
 from _pytest.config import hookimpl