=================
Changelog history
=================
Versions follow `Semantic Versioning `_ (``..``).
Backward incompatible (breaking) changes will only be introduced in major versions
with advance notice in the **Deprecations** section of releases.
..
You should *NOT* be adding new change log entries to this file, this
file is managed by towncrier. You *may* edit previous change logs to
fix problems like typo corrections or such.
To add a new change log entry, please see
https://pip.pypa.io/en/latest/development/#adding-a-news-entry
we named the news folder changelog
.. towncrier release notes start
pytest 4.2.0 (2019-01-30)
=========================
Features
--------
- `#3094 `_: `Classic xunit-style `__ functions and methods
now obey the scope of *autouse* fixtures.
This fixes a number of surprising issues like ``setup_method`` being called before session-scoped
autouse fixtures (see `#517 `__ for an example).
- `#4627 `_: Display a message at the end of the test session when running under Python 2.7 and 3.4 that pytest 5.0 will no longer
support those Python versions.
- `#4660 `_: The number of *selected* tests now are also displayed when the ``-k`` or ``-m`` flags are used.
- `#4688 `_: ``pytest_report_teststatus`` hook now can also receive a ``config`` parameter.
- `#4691 `_: ``pytest_terminal_summary`` hook now can also receive a ``config`` parameter.
Bug Fixes
---------
- `#3547 `_: ``--junitxml`` can emit XML compatible with Jenkins xUnit.
``junit_family`` INI option accepts ``legacy|xunit1``, which produces old style output, and ``xunit2`` that conforms more strictly to https://github.com/jenkinsci/xunit-plugin/blob/xunit-2.3.2/src/main/resources/org/jenkinsci/plugins/xunit/types/model/xsd/junit-10.xsd
- `#4280 `_: Improve quitting from pdb, especially with ``--trace``.
Using ``q[quit]`` after ``pdb.set_trace()`` will quit pytest also.
- `#4402 `_: Warning summary now groups warnings by message instead of by test id.
This makes the output more compact and better conveys the general idea of how much code is
actually generating warnings, instead of how many tests call that code.
- `#4536 `_: ``monkeypatch.delattr`` handles class descriptors like ``staticmethod``/``classmethod``.
- `#4649 `_: Restore marks being considered keywords for keyword expressions.
- `#4653 `_: ``tmp_path`` fixture and other related ones provides resolved path (a.k.a real path)
- `#4667 `_: ``pytest_terminal_summary`` uses result from ``pytest_report_teststatus`` hook, rather than hardcoded strings.
- `#4669 `_: Correctly handle ``unittest.SkipTest`` exception containing non-ascii characters on Python 2.
- `#4680 `_: Ensure the ``tmpdir`` and the ``tmp_path`` fixtures are the same folder.
- `#4681 `_: Ensure ``tmp_path`` is always a real path.
Trivial/Internal Changes
------------------------
- `#4643 `_: Use ``a.item()`` instead of the deprecated ``np.asscalar(a)`` in ``pytest.approx``.
``np.asscalar`` has been `deprecated `__ in ``numpy 1.16.``.
- `#4657 `_: Copy saferepr from pylib
- `#4668 `_: The verbose word for expected failures in the teststatus report changes from ``xfail`` to ``XFAIL`` to be consistent with other test outcomes.
pytest 4.1.1 (2019-01-12)
=========================
Bug Fixes
---------
- `#2256 `_: Show full repr with ``assert a==b`` and ``-vv``.
- `#3456 `_: Extend Doctest-modules to ignore mock objects.
- `#4617 `_: Fixed ``pytest.warns`` bug when context manager is reused (e.g. multiple parametrization).
- `#4631 `_: Don't rewrite assertion when ``__getattr__`` is broken
Improved Documentation
----------------------
- `#3375 `_: Document that using ``setup.cfg`` may crash other tools or cause hard to track down problems because it uses a different parser than ``pytest.ini`` or ``tox.ini`` files.
Trivial/Internal Changes
------------------------
- `#4602 `_: Uninstall ``hypothesis`` in regen tox env.
pytest 4.1.0 (2019-01-05)
=========================
Removals
--------
- `#2169 `_: ``pytest.mark.parametrize``: in previous versions, errors raised by id functions were suppressed and changed into warnings. Now the exceptions are propagated, along with a pytest message informing the node, parameter value and index where the exception occurred.
- `#3078 `_: Remove legacy internal warnings system: ``config.warn``, ``Node.warn``. The ``pytest_logwarning`` now issues a warning when implemented.
See our `docs `__ on information on how to update your code.
- `#3079 `_: Removed support for yield tests - they are fundamentally broken because they don't support fixtures properly since collection and test execution were separated.
See our `docs `__ on information on how to update your code.
- `#3082 `_: Removed support for applying marks directly to values in ``@pytest.mark.parametrize``. Use ``pytest.param`` instead.
See our `docs `__ on information on how to update your code.
- `#3083 `_: Removed ``Metafunc.addcall``. This was the predecessor mechanism to ``@pytest.mark.parametrize``.
See our `docs `__ on information on how to update your code.
- `#3085 `_: Removed support for passing strings to ``pytest.main``. Now, always pass a list of strings instead.
See our `docs `__ on information on how to update your code.
- `#3086 `_: ``[pytest]`` section in **setup.cfg** files is not longer supported, use ``[tool:pytest]`` instead. ``setup.cfg`` files
are meant for use with ``distutils``, and a section named ``pytest`` has notoriously been a source of conflicts and bugs.
Note that for **pytest.ini** and **tox.ini** files the section remains ``[pytest]``.
- `#3616 `_: Removed the deprecated compat properties for ``node.Class/Function/Module`` - use ``pytest.Class/Function/Module`` now.
See our `docs `__ on information on how to update your code.
- `#4421 `_: Removed the implementation of the ``pytest_namespace`` hook.
See our `docs `__ on information on how to update your code.
- `#4489 `_: Removed ``request.cached_setup``. This was the predecessor mechanism to modern fixtures.
See our `docs `__ on information on how to update your code.
- `#4535 `_: Removed the deprecated ``PyCollector.makeitem`` method. This method was made public by mistake a long time ago.
- `#4543 `_: Removed support to define fixtures using the ``pytest_funcarg__`` prefix. Use the ``@pytest.fixture`` decorator instead.
See our `docs `__ on information on how to update your code.
- `#4545 `_: Calling fixtures directly is now always an error instead of a warning.
See our `docs `__ on information on how to update your code.
- `#4546 `_: Remove ``Node.get_marker(name)`` the return value was not usable for more than a existence check.
Use ``Node.get_closest_marker(name)`` as a replacement.
- `#4547 `_: The deprecated ``record_xml_property`` fixture has been removed, use the more generic ``record_property`` instead.
See our `docs `__ for more information.
- `#4548 `_: An error is now raised if the ``pytest_plugins`` variable is defined in a non-top-level ``conftest.py`` file (i.e., not residing in the ``rootdir``).
See our `docs `__ for more information.
- `#891 `_: Remove ``testfunction.markername`` attributes - use ``Node.iter_markers(name=None)`` to iterate them.
Deprecations
------------
- `#3050 `_: Deprecated the ``pytest.config`` global.
See https://docs.pytest.org/en/latest/deprecations.html#pytest-config-global for rationale.
- `#3974 `_: Passing the ``message`` parameter of ``pytest.raises`` now issues a ``DeprecationWarning``.
It is a common mistake to think this parameter will match the exception message, while in fact
it only serves to provide a custom message in case the ``pytest.raises`` check fails. To avoid this
mistake and because it is believed to be little used, pytest is deprecating it without providing
an alternative for the moment.
If you have concerns about this, please comment on `issue #3974 `__.
- `#4435 `_: Deprecated ``raises(..., 'code(as_a_string)')`` and ``warns(..., 'code(as_a_string)')``.
See https://docs.pytest.org/en/latest/deprecations.html#raises-warns-exec for rationale and examples.
Features
--------
- `#3191 `_: A warning is now issued when assertions are made for ``None``.
This is a common source of confusion among new users, which write:
.. code-block:: python
assert mocked_object.assert_called_with(3, 4, 5, key="value")
When they should write:
.. code-block:: python
mocked_object.assert_called_with(3, 4, 5, key="value")
Because the ``assert_called_with`` method of mock objects already executes an assertion.
This warning will not be issued when ``None`` is explicitly checked. An assertion like:
.. code-block:: python
assert variable is None
will not issue the warning.
- `#3632 `_: Richer equality comparison introspection on ``AssertionError`` for objects created using `attrs `__ or `dataclasses `_ (Python 3.7+, `backported to 3.6 `__).
- `#4278 `_: ``CACHEDIR.TAG`` files are now created inside cache directories.
Those files are part of the `Cache Directory Tagging Standard `__, and can
be used by backup or synchronization programs to identify pytest's cache directory as such.
- `#4292 `_: ``pytest.outcomes.Exit`` is derived from ``SystemExit`` instead of ``KeyboardInterrupt``. This allows us to better handle ``pdb`` exiting.
- `#4371 `_: Updated the ``--collect-only`` option to display test descriptions when ran using ``--verbose``.
- `#4386 `_: Restructured ``ExceptionInfo`` object construction and ensure incomplete instances have a ``repr``/``str``.
- `#4416 `_: pdb: added support for keyword arguments with ``pdb.set_trace``.
It handles ``header`` similar to Python 3.7 does it, and forwards any
other keyword arguments to the ``Pdb`` constructor.
This allows for ``__import__("pdb").set_trace(skip=["foo.*"])``.
- `#4483 `_: Added ini parameter ``junit_duration_report`` to optionally report test call durations, excluding setup and teardown times.
The JUnit XML specification and the default pytest behavior is to include setup and teardown times in the test duration
report. You can include just the call durations instead (excluding setup and teardown) by adding this to your ``pytest.ini`` file:
.. code-block:: ini
[pytest]
junit_duration_report = call
- `#4532 `_: ``-ra`` now will show errors and failures last, instead of as the first items in the summary.
This makes it easier to obtain a list of errors and failures to run tests selectively.
- `#4599 `_: ``pytest.importorskip`` now supports a ``reason`` parameter, which will be shown when the
requested module cannot be imported.
Bug Fixes
---------
- `#3532 `_: ``-p`` now accepts its argument without a space between the value, for example ``-pmyplugin``.
- `#4327 `_: ``approx`` again works with more generic containers, more precisely instances of ``Iterable`` and ``Sized`` instead of more restrictive ``Sequence``.
- `#4397 `_: Ensure that node ids are printable.
- `#4435 `_: Fixed ``raises(..., 'code(string)')`` frame filename.
- `#4458 `_: Display actual test ids in ``--collect-only``.
Improved Documentation
----------------------
- `#4557 `_: Markers example documentation page updated to support latest pytest version.
- `#4558 `_: Update cache documentation example to correctly show cache hit and miss.
- `#4580 `_: Improved detailed summary report documentation.
Trivial/Internal Changes
------------------------
- `#4447 `_: Changed the deprecation type of ``--result-log`` to ``PytestDeprecationWarning``.
It was decided to remove this feature at the next major revision.
pytest 4.0.2 (2018-12-13)
=========================
Bug Fixes
---------
- `#4265 `_: Validate arguments from the ``PYTEST_ADDOPTS`` environment variable and the ``addopts`` ini option separately.
- `#4435 `_: Fix ``raises(..., 'code(string)')`` frame filename.
- `#4500 `_: When a fixture yields and a log call is made after the test runs, and, if the test is interrupted, capture attributes are ``None``.
- `#4538 `_: Raise ``TypeError`` for ``with raises(..., match=)``.
Improved Documentation
----------------------
- `#1495 `_: Document common doctest fixture directory tree structure pitfalls
pytest 4.0.1 (2018-11-23)
=========================
Bug Fixes
---------
- `#3952 `_: Display warnings before "short test summary info" again, but still later warnings in the end.
- `#4386 `_: Handle uninitialized exceptioninfo in repr/str.
- `#4393 `_: Do not create ``.gitignore``/``README.md`` files in existing cache directories.
- `#4400 `_: Rearrange warning handling for the yield test errors so the opt-out in 4.0.x correctly works.
- `#4405 `_: Fix collection of testpaths with ``--pyargs``.
- `#4412 `_: Fix assertion rewriting involving ``Starred`` + side-effects.
- `#4425 `_: Ensure we resolve the absolute path when the given ``--basetemp`` is a relative path.
Trivial/Internal Changes
------------------------
- `#4315 `_: Use ``pkg_resources.parse_version`` instead of ``LooseVersion`` in minversion check.
- `#4440 `_: Adjust the stack level of some internal pytest warnings.
pytest 4.0.0 (2018-11-13)
=========================
Removals
--------
- `#3737 `_: **RemovedInPytest4Warnings are now errors by default.**
Following our plan to remove deprecated features with as little disruption as
possible, all warnings of type ``RemovedInPytest4Warnings`` now generate errors
instead of warning messages.
**The affected features will be effectively removed in pytest 4.1**, so please consult the
`Deprecations and Removals `__
section in the docs for directions on how to update existing code.
In the pytest ``4.0.X`` series, it is possible to change the errors back into warnings as a stop
gap measure by adding this to your ``pytest.ini`` file:
.. code-block:: ini
[pytest]
filterwarnings =
ignore::pytest.RemovedInPytest4Warning
But this will stop working when pytest ``4.1`` is released.
**If you have concerns** about the removal of a specific feature, please add a
comment to `#4348 `__.
- `#4358 `_: Remove the ``::()`` notation to denote a test class instance in node ids.
Previously, node ids that contain test instances would use ``::()`` to denote the instance like this::
test_foo.py::Test::()::test_bar
The extra ``::()`` was puzzling to most users and has been removed, so that the test id becomes now::
test_foo.py::Test::test_bar
This change could not accompany a deprecation period as is usual when user-facing functionality changes because
it was not really possible to detect when the functionality was being used explicitly.
The extra ``::()`` might have been removed in some places internally already,
which then led to confusion in places where it was expected, e.g. with
``--deselect`` (`#4127 `_).
Test class instances are also not listed with ``--collect-only`` anymore.
Features
--------
- `#4270 `_: The ``cache_dir`` option uses ``$TOX_ENV_DIR`` as prefix (if set in the environment).
This uses a different cache per tox environment by default.
Bug Fixes
---------
- `#3554 `_: Fix ``CallInfo.__repr__`` for when the call is not finished yet.
pytest 3.10.1 (2018-11-11)
==========================
Bug Fixes
---------
- `#4287 `_: Fix nested usage of debugging plugin (pdb), e.g. with pytester's ``testdir.runpytest``.
- `#4304 `_: Block the ``stepwise`` plugin if ``cacheprovider`` is also blocked, as one depends on the other.
- `#4306 `_: Parse ``minversion`` as an actual version and not as dot-separated strings.
- `#4310 `_: Fix duplicate collection due to multiple args matching the same packages.
- `#4321 `_: Fix ``item.nodeid`` with resolved symlinks.
- `#4325 `_: Fix collection of direct symlinked files, where the target does not match ``python_files``.
- `#4329 `_: Fix TypeError in report_collect with _collect_report_last_write.
Trivial/Internal Changes
------------------------
- `#4305 `_: Replace byte/unicode helpers in test_capture with python level syntax.
pytest 3.10.0 (2018-11-03)
==========================
Features
--------
- `#2619 `_: Resume capturing output after ``continue`` with ``__import__("pdb").set_trace()``.
This also adds a new ``pytest_leave_pdb`` hook, and passes in ``pdb`` to the
existing ``pytest_enter_pdb`` hook.
- `#4147 `_: Add ``--sw``, ``--stepwise`` as an alternative to ``--lf -x`` for stopping at the first failure, but starting the next test invocation from that test. See `the documentation `__ for more info.
- `#4188 `_: Make ``--color`` emit colorful dots when not running in verbose mode. Earlier, it would only colorize the test-by-test output if ``--verbose`` was also passed.
- `#4225 `_: Improve performance with collection reporting in non-quiet mode with terminals.
The "collecting …" message is only printed/updated every 0.5s.
Bug Fixes
---------
- `#2701 `_: Fix false ``RemovedInPytest4Warning: usage of Session... is deprecated, please use pytest`` warnings.
- `#4046 `_: Fix problems with running tests in package ``__init__.py`` files.
- `#4260 `_: Swallow warnings during anonymous compilation of source.
- `#4262 `_: Fix access denied error when deleting stale directories created by ``tmpdir`` / ``tmp_path``.
- `#611 `_: Naming a fixture ``request`` will now raise a warning: the ``request`` fixture is internal and
should not be overwritten as it will lead to internal errors.
- `#4266 `_: Handle (ignore) exceptions raised during collection, e.g. with Django's LazySettings proxy class.
Improved Documentation
----------------------
- `#4255 `_: Added missing documentation about the fact that module names passed to filter warnings are not regex-escaped.
Trivial/Internal Changes
------------------------
- `#4272 `_: Display cachedir also in non-verbose mode if non-default.
- `#4277 `_: pdb: improve message about output capturing with ``set_trace``.
Do not display "IO-capturing turned off/on" when ``-s`` is used to avoid
confusion.
- `#4279 `_: Improve message and stack level of warnings issued by ``monkeypatch.setenv`` when the value of the environment variable is not a ``str``.
pytest 3.9.3 (2018-10-27)
=========================
Bug Fixes
---------
- `#4174 `_: Fix "ValueError: Plugin already registered" with conftest plugins via symlink.
- `#4181 `_: Handle race condition between creation and deletion of temporary folders.
- `#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 `_: Fix regression when ``stacklevel`` for warnings was passed as positional argument on python2.
Improved Documentation
----------------------
- `#3851 `_: Add reference to ``empty_parameter_set_mark`` ini option in documentation of ``@pytest.mark.parametrize``
Trivial/Internal Changes
------------------------
- `#4028 `_: Revert patching of ``sys.breakpointhook`` since it appears to do nothing.
- `#4233 `_: Apply an import sorter (``reorder-python-imports``) to the codebase.
- `#4248 `_: Remove use of unnecessary compat shim, six.binary_type
pytest 3.9.2 (2018-10-22)
=========================
Bug Fixes
---------
- `#2909 `_: Improve error message when a recursive dependency between fixtures is detected.
- `#3340 `_: Fix logging messages not shown in hooks ``pytest_sessionstart()`` and ``pytest_sessionfinish()``.
- `#3533 `_: Fix unescaped XML raw objects in JUnit report for skipped tests
- `#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 `_: Improve error message when it is not possible to determine a function's signature.
- `#4177 `_: Pin ``setuptools>=40.0`` to support ``py_modules`` in ``setup.cfg``
- `#4179 `_: Restore the tmpdir behaviour of symlinking the current test run.
- `#4192 `_: Fix filename reported by ``warnings.warn`` when using ``recwarn`` under python2.
pytest 3.9.1 (2018-10-16)
=========================
Features
--------
- `#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 `_: 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 `_.
* 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 `_: Add a Deprecation warning for pytest.ensuretemp as it was deprecated since a while.
Features
--------
- `#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 `_: 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 `_: Add ``empty_parameter_set_mark=fail_at_collect`` ini option for raising an exception when parametrize collects an empty set.
- `#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 `_: Introduce ``tmp_path`` as a fixture providing a Path object.
- `#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 `_: Allow specification of timeout for ``Testdir.runpytest_subprocess()`` and ``Testdir.run()``.
- `#4098 `_: Add returncode argument to pytest.exit() to exit pytest with a specific return code.
- `#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 `_: Require setuptools>=30.3 and move most of the metadata to ``setup.cfg``.
Bug Fixes
---------
- `#2535 `_: Improve error message when test functions of ``unittest.TestCase`` subclasses use a parametrized fixture.
- `#3057 `_: ``request.fixturenames`` now correctly returns the name of fixtures created by ``request.getfixturevalue()``.
- `#3946 `_: Warning filters passed as command line options using ``-W`` now take precedence over filters defined in ``ini``
configuration files.
- `#4066 `_: Fix source reindenting by using ``textwrap.dedent`` directly.
- `#4102 `_: ``pytest.warn`` will capture previously-warned warnings in Python 2. Previously they were never raised.
- `#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 `_: Fix duplicate printing of internal errors when using ``--pdb``.
- `#4135 `_: pathlib based tmpdir cleanup now correctly handles symlinks in the folder.
- `#4152 `_: Display the filename when encountering ``SyntaxWarning``.
Improved Documentation
----------------------
- `#3713 `_: Update usefixtures documentation to clarify that it can't be used with fixture functions.
- `#4058 `_: Update fixture documentation to specify that a fixture can be invoked twice in the scope it's defined for.
- `#4064 `_: According to unittest.rst, setUpModule and tearDownModule were not implemented, but it turns out they are. So updated the documentation for unittest.
- `#4151 `_: Add tempir testing example to CONTRIBUTING.rst guide
Trivial/Internal Changes
------------------------
- `#2293 `_: The internal ``MarkerError`` exception has been removed.
- `#3988 `_: Port the implementation of tmpdir to pathlib.
- `#4063 `_: Exclude 0.00 second entries from ``--duration`` output unless ``-vv`` is passed on the command-line.
- `#4093 `_: Fixed formatting of string literals in internal tests.
pytest 3.8.2 (2018-10-02)
=========================
Deprecations and Removals
-------------------------
- `#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 `_: Fix reload on assertion rewritten modules.
- `#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 `_: 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 `_: Exclude empty reports for passed tests when ``-rP`` option is used.
- `#4051 `_: Improve error message when an invalid Python expression is passed to the ``-m`` option.
- `#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 `_: Add possible values for fixture scope to docs.
pytest 3.8.1 (2018-09-22)
=========================
Bug Fixes
---------
- `#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 `_: Fix the following error during collection of tests inside packages::
TypeError: object of type 'Package' has no len()
- `#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 `_: Fix crash of the assertion rewriter if a test changed the current working directory without restoring it afterwards.
- `#3998 `_: Fix issue that prevented some caplog properties (for example ``record_tuples``) from being available when entering the debugger with ``--pdb``.
- `#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 `_: New `Deprecations and Removals `_ 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 `_: Improve pre-commit detection for changelog filenames
- `#3975 `_: Remove legacy code around im_func as that was python2 only
pytest 3.8.0 (2018-09-05)
=========================
Deprecations and Removals
-------------------------
- `#2452 `_: ``Config.warn`` and ``Node.warn`` have been
deprecated, see ``_ for rationale and
examples.
- `#3936 `_: ``@pytest.mark.filterwarnings`` second parameter is no longer regex-escaped,
making it possible to actually use regular expressions to check the warning message.
**Note**: regex-escaping the match string was an implementation oversight that might break test suites which depend
on the old behavior.
Features
--------
- `#2452 `_: Internal pytest warnings are now issued using the standard ``warnings`` module, making it possible to use
the standard warnings filters to manage those warnings. This introduces ``PytestWarning``,
``PytestDeprecationWarning`` and ``RemovedInPytest4Warning`` warning types as part of the public API.
Consult `the documentation `__ for more info.
- `#2908 `_: ``DeprecationWarning`` and ``PendingDeprecationWarning`` are now shown by default if no other warning filter is
configured. This makes pytest more compliant with
`PEP-0506 `_. See
`the docs `_ for
more info.
- `#3251 `_: Warnings are now captured and displayed during test collection.
- `#3784 `_: ``PYTEST_DISABLE_PLUGIN_AUTOLOAD`` environment variable disables plugin auto-loading when set.
- `#3829 `_: Added the ``count`` option to ``console_output_style`` to enable displaying the progress as a count instead of a percentage.
- `#3837 `_: Added support for 'xfailed' and 'xpassed' outcomes to the ``pytester.RunResult.assert_outcomes`` signature.
Bug Fixes
---------
- `#3911 `_: Terminal writer now takes into account unicode character width when writing out progress.
- `#3913 `_: Pytest now returns with correct exit code (EXIT_USAGEERROR, 4) when called with unknown arguments.
- `#3918 `_: Improve performance of assertion rewriting.
Improved Documentation
----------------------
- `#3566 `_: Added a blurb in usage.rst for the usage of -r flag which is used to show an extra test summary info.
- `#3907 `_: Corrected type of the exceptions collection passed to ``xfail``: ``raises`` argument accepts a ``tuple`` instead of ``list``.
Trivial/Internal Changes
------------------------
- `#3853 `_: Removed ``"run all (no recorded failures)"`` message printed with ``--failed-first`` and ``--last-failed`` when there are no failed tests.
pytest 3.7.4 (2018-08-29)
=========================
Bug Fixes
---------
- `#3506 `_: Fix possible infinite recursion when writing ``.pyc`` files.
- `#3853 `_: Cache plugin now obeys the ``-q`` flag when ``--last-failed`` and ``--failed-first`` flags are used.
- `#3883 `_: Fix bad console output when using ``console_output_style=classic``.
- `#3888 `_: Fix macOS specific code using ``capturemanager`` plugin in doctests.
Improved Documentation
----------------------
- `#3902 `_: Fix pytest.org links
pytest 3.7.3 (2018-08-26)
=========================
Bug Fixes
---------
- `#3033 `_: Fixtures during teardown can again use ``capsys`` and ``capfd`` to inspect output captured during tests.
- `#3773 `_: Fix collection of tests from ``__init__.py`` files if they match the ``python_files`` configuration option.
- `#3796 `_: Fix issue where teardown of fixtures of consecutive sub-packages were executed once, at the end of the outer
package.
- `#3816 `_: Fix bug where ``--show-capture=no`` option would still show logs printed during fixture teardown.
- `#3819 `_: Fix ``stdout/stderr`` not getting captured when real-time cli logging is active.
- `#3843 `_: Fix collection error when specifying test functions directly in the command line using ``test.py::test`` syntax together with ``--doctest-modules``.
- `#3848 `_: Fix bugs where unicode arguments could not be passed to ``testdir.runpytest`` on Python 2.
- `#3854 `_: Fix double collection of tests within packages when the filename starts with a capital letter.
Improved Documentation
----------------------
- `#3824 `_: Added example for multiple glob pattern matches in ``python_files``.
- `#3833 `_: Added missing docs for ``pytester.Testdir``.
- `#3870 `_: Correct documentation for setuptools integration.
Trivial/Internal Changes
------------------------
- `#3826 `_: Replace broken type annotations with type comments.
- `#3845 `_: Remove a reference to issue `#568 `_ from the documentation, which has since been
fixed.
pytest 3.7.2 (2018-08-16)
=========================
Bug Fixes
---------
- `#3671 `_: Fix ``filterwarnings`` not being registered as a builtin mark.
- `#3768 `_, `#3789 `_: Fix test collection from packages mixed with normal directories.
- `#3771 `_: Fix infinite recursion during collection if a ``pytest_ignore_collect`` hook returns ``False`` instead of ``None``.
- `#3774 `_: Fix bug where decorated fixtures would lose functionality (for example ``@mock.patch``).
- `#3775 `_: Fix bug where importing modules or other objects with prefix ``pytest_`` prefix would raise a ``PluginValidationError``.
- `#3788 `_: Fix ``AttributeError`` during teardown of ``TestCase`` subclasses which raise an exception during ``__init__``.
- `#3804 `_: Fix traceback reporting for exceptions with ``__cause__`` cycles.
Improved Documentation
----------------------
- `#3746 `_: Add documentation for ``metafunc.config`` that had been mistakenly hidden.
pytest 3.7.1 (2018-08-02)
=========================
Bug Fixes
---------
- `#3473 `_: Raise immediately if ``approx()`` is given an expected value of a type it doesn't understand (e.g. strings, nested dicts, etc.).
- `#3712 `_: Correctly represent the dimensions of a numpy array when calling ``repr()`` on ``approx()``.
- `#3742 `_: Fix incompatibility with third party plugins during collection, which produced the error ``object has no attribute '_collectfile'``.
- `#3745 `_: Display the absolute path if ``cache_dir`` is not relative to the ``rootdir`` instead of failing.
- `#3747 `_: Fix compatibility problem with plugins and the warning code issued by fixture functions when they are called directly.
- `#3748 `_: Fix infinite recursion in ``pytest.approx`` with arrays in ``numpy<1.13``.
- `#3757 `_: Pin pathlib2 to ``>=2.2.0`` as we require ``__fspath__`` support.
- `#3763 `_: Fix ``TypeError`` when the assertion message is ``bytes`` in python 3.
pytest 3.7.0 (2018-07-30)
=========================
Deprecations and Removals
-------------------------
- `#2639 `_: ``pytest_namespace`` has been `deprecated `_.
- `#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 `_.
Features
--------
- `#2283 `_: New ``package`` fixture scope: fixtures are finalized when the last test of a *package* finishes. This feature is considered **experimental**, so use it sparingly.
- `#3576