512 lines
19 KiB
Python
512 lines
19 KiB
Python
""" core implementation of testing process: init, session, runtest loop. """
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from __future__ import absolute_import, division, print_function
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import contextlib
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import functools
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import os
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import pkgutil
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import six
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import sys
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import _pytest
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from _pytest import nodes
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import _pytest._code
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import py
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from _pytest.config import directory_arg, UsageError, hookimpl
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from _pytest.outcomes import exit
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from _pytest.runner import collect_one_node
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# exitcodes for the command line
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EXIT_OK = 0
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EXIT_TESTSFAILED = 1
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EXIT_INTERRUPTED = 2
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EXIT_INTERNALERROR = 3
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EXIT_USAGEERROR = 4
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EXIT_NOTESTSCOLLECTED = 5
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def pytest_addoption(parser):
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parser.addini("norecursedirs", "directory patterns to avoid for recursion",
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type="args", default=['.*', 'build', 'dist', 'CVS', '_darcs', '{arch}', '*.egg', 'venv'])
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parser.addini("testpaths", "directories to search for tests when no files or directories are given in the "
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"command line.",
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type="args", default=[])
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# parser.addini("dirpatterns",
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# "patterns specifying possible locations of test files",
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# type="linelist", default=["**/test_*.txt",
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# "**/test_*.py", "**/*_test.py"]
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# )
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group = parser.getgroup("general", "running and selection options")
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group._addoption('-x', '--exitfirst', action="store_const",
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dest="maxfail", const=1,
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help="exit instantly on first error or failed test."),
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group._addoption('--maxfail', metavar="num",
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action="store", type=int, dest="maxfail", default=0,
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help="exit after first num failures or errors.")
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group._addoption('--strict', action="store_true",
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help="marks not registered in configuration file raise errors.")
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group._addoption("-c", metavar="file", type=str, dest="inifilename",
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help="load configuration from `file` instead of trying to locate one of the implicit "
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"configuration files.")
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group._addoption("--continue-on-collection-errors", action="store_true",
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default=False, dest="continue_on_collection_errors",
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help="Force test execution even if collection errors occur.")
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group = parser.getgroup("collect", "collection")
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group.addoption('--collectonly', '--collect-only', action="store_true",
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help="only collect tests, don't execute them."),
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group.addoption('--pyargs', action="store_true",
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help="try to interpret all arguments as python packages.")
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group.addoption("--ignore", action="append", metavar="path",
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help="ignore path during collection (multi-allowed).")
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# when changing this to --conf-cut-dir, config.py Conftest.setinitial
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# needs upgrading as well
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group.addoption('--confcutdir', dest="confcutdir", default=None,
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metavar="dir", type=functools.partial(directory_arg, optname="--confcutdir"),
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help="only load conftest.py's relative to specified dir.")
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group.addoption('--noconftest', action="store_true",
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dest="noconftest", default=False,
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help="Don't load any conftest.py files.")
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group.addoption('--keepduplicates', '--keep-duplicates', action="store_true",
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dest="keepduplicates", default=False,
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help="Keep duplicate tests.")
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group.addoption('--collect-in-virtualenv', action='store_true',
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dest='collect_in_virtualenv', default=False,
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help="Don't ignore tests in a local virtualenv directory")
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group = parser.getgroup("debugconfig",
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"test session debugging and configuration")
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group.addoption('--basetemp', dest="basetemp", default=None, metavar="dir",
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help="base temporary directory for this test run.")
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def pytest_configure(config):
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__import__('pytest').config = config # compatibiltiy
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def wrap_session(config, doit):
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"""Skeleton command line program"""
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session = Session(config)
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session.exitstatus = EXIT_OK
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initstate = 0
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try:
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try:
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config._do_configure()
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initstate = 1
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config.hook.pytest_sessionstart(session=session)
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initstate = 2
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session.exitstatus = doit(config, session) or 0
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except UsageError:
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raise
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except Failed:
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session.exitstatus = EXIT_TESTSFAILED
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except KeyboardInterrupt:
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excinfo = _pytest._code.ExceptionInfo()
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if initstate < 2 and isinstance(excinfo.value, exit.Exception):
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sys.stderr.write('{0}: {1}\n'.format(
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excinfo.typename, excinfo.value.msg))
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config.hook.pytest_keyboard_interrupt(excinfo=excinfo)
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session.exitstatus = EXIT_INTERRUPTED
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except: # noqa
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excinfo = _pytest._code.ExceptionInfo()
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config.notify_exception(excinfo, config.option)
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session.exitstatus = EXIT_INTERNALERROR
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if excinfo.errisinstance(SystemExit):
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sys.stderr.write("mainloop: caught Spurious SystemExit!\n")
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finally:
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excinfo = None # Explicitly break reference cycle.
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session.startdir.chdir()
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if initstate >= 2:
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config.hook.pytest_sessionfinish(
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session=session,
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exitstatus=session.exitstatus)
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config._ensure_unconfigure()
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return session.exitstatus
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def pytest_cmdline_main(config):
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return wrap_session(config, _main)
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def _main(config, session):
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""" default command line protocol for initialization, session,
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running tests and reporting. """
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config.hook.pytest_collection(session=session)
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config.hook.pytest_runtestloop(session=session)
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if session.testsfailed:
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return EXIT_TESTSFAILED
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elif session.testscollected == 0:
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return EXIT_NOTESTSCOLLECTED
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def pytest_collection(session):
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return session.perform_collect()
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def pytest_runtestloop(session):
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if (session.testsfailed and
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not session.config.option.continue_on_collection_errors):
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raise session.Interrupted(
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"%d errors during collection" % session.testsfailed)
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if session.config.option.collectonly:
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return True
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for i, item in enumerate(session.items):
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nextitem = session.items[i + 1] if i + 1 < len(session.items) else None
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item.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
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if session.shouldfail:
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raise session.Failed(session.shouldfail)
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if session.shouldstop:
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raise session.Interrupted(session.shouldstop)
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return True
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def _in_venv(path):
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"""Attempts to detect if ``path`` is the root of a Virtual Environment by
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checking for the existence of the appropriate activate script"""
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bindir = path.join('Scripts' if sys.platform.startswith('win') else 'bin')
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if not bindir.exists():
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return False
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activates = ('activate', 'activate.csh', 'activate.fish',
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'Activate', 'Activate.bat', 'Activate.ps1')
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return any([fname.basename in activates for fname in bindir.listdir()])
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def pytest_ignore_collect(path, config):
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ignore_paths = config._getconftest_pathlist("collect_ignore", path=path.dirpath())
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ignore_paths = ignore_paths or []
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excludeopt = config.getoption("ignore")
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if excludeopt:
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ignore_paths.extend([py.path.local(x) for x in excludeopt])
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if py.path.local(path) in ignore_paths:
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return True
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allow_in_venv = config.getoption("collect_in_virtualenv")
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if _in_venv(path) and not allow_in_venv:
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return True
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# Skip duplicate paths.
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keepduplicates = config.getoption("keepduplicates")
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duplicate_paths = config.pluginmanager._duplicatepaths
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if not keepduplicates:
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if path in duplicate_paths:
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return True
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else:
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duplicate_paths.add(path)
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return False
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@contextlib.contextmanager
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def _patched_find_module():
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"""Patch bug in pkgutil.ImpImporter.find_module
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When using pkgutil.find_loader on python<3.4 it removes symlinks
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from the path due to a call to os.path.realpath. This is not consistent
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with actually doing the import (in these versions, pkgutil and __import__
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did not share the same underlying code). This can break conftest
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discovery for pytest where symlinks are involved.
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The only supported python<3.4 by pytest is python 2.7.
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"""
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if six.PY2: # python 3.4+ uses importlib instead
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def find_module_patched(self, fullname, path=None):
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# Note: we ignore 'path' argument since it is only used via meta_path
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subname = fullname.split(".")[-1]
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if subname != fullname and self.path is None:
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return None
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if self.path is None:
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path = None
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else:
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# original: path = [os.path.realpath(self.path)]
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path = [self.path]
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try:
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file, filename, etc = pkgutil.imp.find_module(subname,
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path)
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except ImportError:
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return None
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return pkgutil.ImpLoader(fullname, file, filename, etc)
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old_find_module = pkgutil.ImpImporter.find_module
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pkgutil.ImpImporter.find_module = find_module_patched
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try:
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yield
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finally:
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pkgutil.ImpImporter.find_module = old_find_module
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else:
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yield
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class FSHookProxy(object):
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def __init__(self, fspath, pm, remove_mods):
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self.fspath = fspath
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self.pm = pm
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self.remove_mods = remove_mods
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def __getattr__(self, name):
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x = self.pm.subset_hook_caller(name, remove_plugins=self.remove_mods)
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self.__dict__[name] = x
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return x
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class NoMatch(Exception):
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""" raised if matching cannot locate a matching names. """
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class Interrupted(KeyboardInterrupt):
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""" signals an interrupted test run. """
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__module__ = 'builtins' # for py3
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class Failed(Exception):
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""" signals an stop as failed test run. """
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class Session(nodes.FSCollector):
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Interrupted = Interrupted
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Failed = Failed
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def __init__(self, config):
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nodes.FSCollector.__init__(
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self, config.rootdir, parent=None,
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config=config, session=self)
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self.testsfailed = 0
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self.testscollected = 0
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self.shouldstop = False
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self.shouldfail = False
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self.trace = config.trace.root.get("collection")
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self._norecursepatterns = config.getini("norecursedirs")
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self.startdir = py.path.local()
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self.config.pluginmanager.register(self, name="session")
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def _makeid(self):
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return ""
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@hookimpl(tryfirst=True)
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def pytest_collectstart(self):
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if self.shouldfail:
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raise self.Failed(self.shouldfail)
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if self.shouldstop:
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raise self.Interrupted(self.shouldstop)
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@hookimpl(tryfirst=True)
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def pytest_runtest_logreport(self, report):
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if report.failed and not hasattr(report, 'wasxfail'):
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self.testsfailed += 1
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maxfail = self.config.getvalue("maxfail")
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if maxfail and self.testsfailed >= maxfail:
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self.shouldfail = "stopping after %d failures" % (
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self.testsfailed)
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pytest_collectreport = pytest_runtest_logreport
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def isinitpath(self, path):
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return path in self._initialpaths
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def gethookproxy(self, fspath):
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# check if we have the common case of running
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# hooks with all conftest.py filesall conftest.py
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pm = self.config.pluginmanager
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my_conftestmodules = pm._getconftestmodules(fspath)
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remove_mods = pm._conftest_plugins.difference(my_conftestmodules)
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if remove_mods:
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# one or more conftests are not in use at this fspath
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proxy = FSHookProxy(fspath, pm, remove_mods)
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else:
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# all plugis are active for this fspath
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proxy = self.config.hook
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return proxy
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def perform_collect(self, args=None, genitems=True):
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hook = self.config.hook
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try:
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items = self._perform_collect(args, genitems)
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self.config.pluginmanager.check_pending()
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hook.pytest_collection_modifyitems(session=self,
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config=self.config, items=items)
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finally:
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hook.pytest_collection_finish(session=self)
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self.testscollected = len(items)
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return items
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def _perform_collect(self, args, genitems):
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if args is None:
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args = self.config.args
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self.trace("perform_collect", self, args)
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self.trace.root.indent += 1
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self._notfound = []
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self._initialpaths = set()
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self._initialparts = []
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self.items = items = []
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for arg in args:
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parts = self._parsearg(arg)
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self._initialparts.append(parts)
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self._initialpaths.add(parts[0])
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rep = collect_one_node(self)
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self.ihook.pytest_collectreport(report=rep)
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self.trace.root.indent -= 1
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if self._notfound:
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errors = []
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for arg, exc in self._notfound:
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line = "(no name %r in any of %r)" % (arg, exc.args[0])
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errors.append("not found: %s\n%s" % (arg, line))
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# XXX: test this
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raise UsageError(*errors)
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if not genitems:
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return rep.result
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else:
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if rep.passed:
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for node in rep.result:
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self.items.extend(self.genitems(node))
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return items
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def collect(self):
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for parts in self._initialparts:
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arg = "::".join(map(str, parts))
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self.trace("processing argument", arg)
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self.trace.root.indent += 1
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try:
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for x in self._collect(arg):
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yield x
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except NoMatch:
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# we are inside a make_report hook so
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# we cannot directly pass through the exception
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self._notfound.append((arg, sys.exc_info()[1]))
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self.trace.root.indent -= 1
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def _collect(self, arg):
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names = self._parsearg(arg)
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path = names.pop(0)
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if path.check(dir=1):
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assert not names, "invalid arg %r" % (arg,)
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for path in path.visit(fil=lambda x: x.check(file=1),
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rec=self._recurse, bf=True, sort=True):
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for x in self._collectfile(path):
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yield x
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else:
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assert path.check(file=1)
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for x in self.matchnodes(self._collectfile(path), names):
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yield x
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def _collectfile(self, path):
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ihook = self.gethookproxy(path)
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if not self.isinitpath(path):
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if ihook.pytest_ignore_collect(path=path, config=self.config):
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return ()
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return ihook.pytest_collect_file(path=path, parent=self)
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def _recurse(self, path):
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ihook = self.gethookproxy(path.dirpath())
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if ihook.pytest_ignore_collect(path=path, config=self.config):
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return
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for pat in self._norecursepatterns:
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if path.check(fnmatch=pat):
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return False
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ihook = self.gethookproxy(path)
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ihook.pytest_collect_directory(path=path, parent=self)
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return True
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def _tryconvertpyarg(self, x):
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"""Convert a dotted module name to path.
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"""
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try:
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with _patched_find_module():
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loader = pkgutil.find_loader(x)
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except ImportError:
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return x
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if loader is None:
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return x
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# This method is sometimes invoked when AssertionRewritingHook, which
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# does not define a get_filename method, is already in place:
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try:
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with _patched_find_module():
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path = loader.get_filename(x)
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except AttributeError:
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# Retrieve path from AssertionRewritingHook:
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path = loader.modules[x][0].co_filename
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if loader.is_package(x):
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path = os.path.dirname(path)
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return path
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def _parsearg(self, arg):
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""" return (fspath, names) tuple after checking the file exists. """
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parts = str(arg).split("::")
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if self.config.option.pyargs:
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parts[0] = self._tryconvertpyarg(parts[0])
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relpath = parts[0].replace("/", os.sep)
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path = self.config.invocation_dir.join(relpath, abs=True)
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if not path.check():
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if self.config.option.pyargs:
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raise UsageError(
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"file or package not found: " + arg +
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" (missing __init__.py?)")
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else:
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raise UsageError("file not found: " + arg)
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parts[0] = path
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return parts
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def matchnodes(self, matching, names):
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self.trace("matchnodes", matching, names)
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self.trace.root.indent += 1
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nodes = self._matchnodes(matching, names)
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num = len(nodes)
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self.trace("matchnodes finished -> ", num, "nodes")
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self.trace.root.indent -= 1
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if num == 0:
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raise NoMatch(matching, names[:1])
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return nodes
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def _matchnodes(self, matching, names):
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if not matching or not names:
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return matching
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name = names[0]
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assert name
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nextnames = names[1:]
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resultnodes = []
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for node in matching:
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if isinstance(node, nodes.Item):
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if not names:
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resultnodes.append(node)
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continue
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assert isinstance(node, nodes.Collector)
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rep = collect_one_node(node)
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if rep.passed:
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has_matched = False
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for x in rep.result:
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# TODO: remove parametrized workaround once collection structure contains parametrization
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if x.name == name or x.name.split("[")[0] == name:
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resultnodes.extend(self.matchnodes([x], nextnames))
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has_matched = True
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# XXX accept IDs that don't have "()" for class instances
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if not has_matched and len(rep.result) == 1 and x.name == "()":
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nextnames.insert(0, name)
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resultnodes.extend(self.matchnodes([x], nextnames))
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else:
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# report collection failures here to avoid failing to run some test
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# specified in the command line because the module could not be
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# imported (#134)
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node.ihook.pytest_collectreport(report=rep)
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return resultnodes
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def genitems(self, node):
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self.trace("genitems", node)
|
|
if isinstance(node, nodes.Item):
|
|
node.ihook.pytest_itemcollected(item=node)
|
|
yield node
|
|
else:
|
|
assert isinstance(node, nodes.Collector)
|
|
rep = collect_one_node(node)
|
|
if rep.passed:
|
|
for subnode in rep.result:
|
|
for x in self.genitems(subnode):
|
|
yield x
|
|
node.ihook.pytest_collectreport(report=rep)
|