316 lines
12 KiB
Python
316 lines
12 KiB
Python
""" hook specifications for pytest plugins, invoked from main.py and builtin plugins. """
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from _pytest._pluggy import HookspecMarker
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hookspec = HookspecMarker("pytest")
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# -------------------------------------------------------------------------
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# Initialization hooks called for every plugin
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# -------------------------------------------------------------------------
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@hookspec(historic=True)
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def pytest_addhooks(pluginmanager):
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"""called at plugin registration time to allow adding new hooks via a call to
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pluginmanager.add_hookspecs(module_or_class, prefix)."""
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@hookspec(historic=True)
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def pytest_namespace():
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"""return dict of name->object to be made globally available in
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the pytest namespace. This hook is called at plugin registration
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time.
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"""
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@hookspec(historic=True)
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def pytest_plugin_registered(plugin, manager):
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""" a new pytest plugin got registered. """
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@hookspec(historic=True)
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def pytest_addoption(parser):
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"""register argparse-style options and ini-style config values,
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called once at the beginning of a test run.
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.. note::
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This function should be implemented only in plugins or ``conftest.py``
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files situated at the tests root directory due to how pytest
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:ref:`discovers plugins during startup <pluginorder>`.
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:arg parser: To add command line options, call
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:py:func:`parser.addoption(...) <_pytest.config.Parser.addoption>`.
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To add ini-file values call :py:func:`parser.addini(...)
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<_pytest.config.Parser.addini>`.
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Options can later be accessed through the
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:py:class:`config <_pytest.config.Config>` object, respectively:
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- :py:func:`config.getoption(name) <_pytest.config.Config.getoption>` to
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retrieve the value of a command line option.
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- :py:func:`config.getini(name) <_pytest.config.Config.getini>` to retrieve
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a value read from an ini-style file.
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The config object is passed around on many internal objects via the ``.config``
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attribute or can be retrieved as the ``pytestconfig`` fixture or accessed
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via (deprecated) ``pytest.config``.
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"""
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@hookspec(historic=True)
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def pytest_configure(config):
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""" called after command line options have been parsed
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and all plugins and initial conftest files been loaded.
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This hook is called for every plugin.
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"""
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# -------------------------------------------------------------------------
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# Bootstrapping hooks called for plugins registered early enough:
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# internal and 3rd party plugins as well as directly
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# discoverable conftest.py local plugins.
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_cmdline_parse(pluginmanager, args):
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"""return initialized config object, parsing the specified args. """
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def pytest_cmdline_preparse(config, args):
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"""(deprecated) modify command line arguments before option parsing. """
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@hookspec(firstresult=True)
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def pytest_cmdline_main(config):
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""" called for performing the main command line action. The default
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implementation will invoke the configure hooks and runtest_mainloop. """
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def pytest_load_initial_conftests(early_config, parser, args):
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""" implements the loading of initial conftest files ahead
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of command line option parsing. """
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# -------------------------------------------------------------------------
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# collection hooks
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_collection(session):
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""" perform the collection protocol for the given session. """
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def pytest_collection_modifyitems(session, config, items):
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""" called after collection has been performed, may filter or re-order
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the items in-place."""
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def pytest_collection_finish(session):
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""" called after collection has been performed and modified. """
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@hookspec(firstresult=True)
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def pytest_ignore_collect(path, config):
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""" return True to prevent considering this path for collection.
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This hook is consulted for all files and directories prior to calling
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more specific hooks.
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"""
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@hookspec(firstresult=True)
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def pytest_collect_directory(path, parent):
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""" called before traversing a directory for collection files. """
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def pytest_collect_file(path, parent):
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""" return collection Node or None for the given path. Any new node
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needs to have the specified ``parent`` as a parent."""
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# logging hooks for collection
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def pytest_collectstart(collector):
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""" collector starts collecting. """
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def pytest_itemcollected(item):
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""" we just collected a test item. """
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def pytest_collectreport(report):
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""" collector finished collecting. """
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def pytest_deselected(items):
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""" called for test items deselected by keyword. """
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@hookspec(firstresult=True)
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def pytest_make_collect_report(collector):
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""" perform ``collector.collect()`` and return a CollectReport. """
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# -------------------------------------------------------------------------
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# Python test function related hooks
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_pycollect_makemodule(path, parent):
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""" return a Module collector or None for the given path.
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This hook will be called for each matching test module path.
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The pytest_collect_file hook needs to be used if you want to
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create test modules for files that do not match as a test module.
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"""
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@hookspec(firstresult=True)
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def pytest_pycollect_makeitem(collector, name, obj):
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""" return custom item/collector for a python object in a module, or None. """
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@hookspec(firstresult=True)
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def pytest_pyfunc_call(pyfuncitem):
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""" call underlying test function. """
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def pytest_generate_tests(metafunc):
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""" generate (multiple) parametrized calls to a test function."""
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@hookspec(firstresult=True)
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def pytest_make_parametrize_id(config, val, argname):
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"""Return a user-friendly string representation of the given ``val`` that will be used
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by @pytest.mark.parametrize calls. Return None if the hook doesn't know about ``val``.
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The parameter name is available as ``argname``, if required.
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"""
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# -------------------------------------------------------------------------
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# generic runtest related hooks
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_runtestloop(session):
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""" called for performing the main runtest loop
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(after collection finished). """
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def pytest_itemstart(item, node):
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""" (deprecated, use pytest_runtest_logstart). """
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@hookspec(firstresult=True)
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def pytest_runtest_protocol(item, nextitem):
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""" implements the runtest_setup/call/teardown protocol for
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the given test item, including capturing exceptions and calling
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reporting hooks.
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:arg item: test item for which the runtest protocol is performed.
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:arg nextitem: the scheduled-to-be-next test item (or None if this
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is the end my friend). This argument is passed on to
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:py:func:`pytest_runtest_teardown`.
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:return boolean: True if no further hook implementations should be invoked.
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"""
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def pytest_runtest_logstart(nodeid, location):
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""" signal the start of running a single test item. """
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def pytest_runtest_setup(item):
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""" called before ``pytest_runtest_call(item)``. """
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def pytest_runtest_call(item):
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""" called to execute the test ``item``. """
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def pytest_runtest_teardown(item, nextitem):
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""" called after ``pytest_runtest_call``.
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:arg nextitem: the scheduled-to-be-next test item (None if no further
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test item is scheduled). This argument can be used to
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perform exact teardowns, i.e. calling just enough finalizers
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so that nextitem only needs to call setup-functions.
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"""
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@hookspec(firstresult=True)
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def pytest_runtest_makereport(item, call):
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""" return a :py:class:`_pytest.runner.TestReport` object
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for the given :py:class:`pytest.Item` and
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:py:class:`_pytest.runner.CallInfo`.
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"""
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def pytest_runtest_logreport(report):
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""" process a test setup/call/teardown report relating to
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the respective phase of executing a test. """
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# -------------------------------------------------------------------------
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# Fixture related hooks
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_fixture_setup(fixturedef, request):
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""" performs fixture setup execution. """
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def pytest_fixture_post_finalizer(fixturedef):
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""" called after fixture teardown, but before the cache is cleared so
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the fixture result cache ``fixturedef.cached_result`` can
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still be accessed."""
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# -------------------------------------------------------------------------
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# test session related hooks
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# -------------------------------------------------------------------------
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def pytest_sessionstart(session):
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""" before session.main() is called. """
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def pytest_sessionfinish(session, exitstatus):
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""" whole test run finishes. """
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def pytest_unconfigure(config):
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""" called before test process is exited. """
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# -------------------------------------------------------------------------
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# hooks for customising the assert methods
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# -------------------------------------------------------------------------
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def pytest_assertrepr_compare(config, op, left, right):
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"""return explanation for comparisons in failing assert expressions.
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Return None for no custom explanation, otherwise return a list
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of strings. The strings will be joined by newlines but any newlines
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*in* a string will be escaped. Note that all but the first line will
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be indented sligthly, the intention is for the first line to be a summary.
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"""
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# -------------------------------------------------------------------------
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# hooks for influencing reporting (invoked from _pytest_terminal)
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# -------------------------------------------------------------------------
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def pytest_report_header(config, startdir):
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""" return a string to be displayed as header info for terminal reporting."""
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@hookspec(firstresult=True)
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def pytest_report_teststatus(report):
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""" return result-category, shortletter and verbose word for reporting."""
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def pytest_terminal_summary(terminalreporter, exitstatus):
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""" add additional section in terminal summary reporting. """
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@hookspec(historic=True)
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def pytest_logwarning(message, code, nodeid, fslocation):
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""" process a warning specified by a message, a code string,
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a nodeid and fslocation (both of which may be None
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if the warning is not tied to a partilar node/location)."""
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# -------------------------------------------------------------------------
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# doctest hooks
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# -------------------------------------------------------------------------
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@hookspec(firstresult=True)
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def pytest_doctest_prepare_content(content):
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""" return processed content for a given doctest"""
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# -------------------------------------------------------------------------
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# error handling and internal debugging hooks
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# -------------------------------------------------------------------------
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def pytest_internalerror(excrepr, excinfo):
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""" called for internal errors. """
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def pytest_keyboard_interrupt(excinfo):
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""" called for keyboard interrupt. """
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def pytest_exception_interact(node, call, report):
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"""called when an exception was raised which can potentially be
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interactively handled.
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This hook is only called if an exception was raised
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that is not an internal exception like ``skip.Exception``.
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"""
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def pytest_enter_pdb(config):
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""" called upon pdb.set_trace(), can be used by plugins to take special
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action just before the python debugger enters in interactive mode.
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:arg config: pytest config object
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:type config: _pytest.config.Config
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"""
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