3.0.4.dev

Import errors when collecting test modules now display the full traceback (#1976). Thanks @cwitty for the report and @nicoddemus for the PR.
Fix confusing command-line help message for custom options with two or more metavar properties (#2004). Thanks @okulynyak and @davehunt for the report and @nicoddemus for the PR.
When loading plugins, import errors which contain non-ascii messages are now properly handled in Python 2 (#1998). Thanks @nicoddemus for the PR.
Fixed false-positives warnings from assertion rewrite hook for modules that were rewritten but were later marked explicitly by pytest.register_assert_rewrite or implicitly as a plugin (#2005). Thanks @RonnyPfannschmidt for the report and @nicoddemus for the PR.

3.0.3

The ids argument to parametrize again accepts unicode strings in Python 2 (#1905). Thanks @philpep for the report and @nicoddemus for the PR.
Assertions are now being rewritten for plugins in development mode (pip install -e) (#1934). Thanks @nicoddemus for the PR.
Fix pkg_resources import error in Jython projects (#1853). Thanks @raquel-ucl for the PR.
Got rid of AttributeError: 'Module' object has no attribute '_obj' exception in Python 3 (#1944). Thanks @axil for the PR.
Explain a bad scope value passed to @fixture declarations or a MetaFunc.parametrize() call. Thanks @tgoodlet for the PR.
This version includes pluggy-0.4.0, which correctly handles VersionConflict errors in plugins (#704). Thanks @nicoddemus for the PR.

3.0.2

Improve error message when passing non-string ids to pytest.mark.parametrize (#1857). Thanks @okken for the report and @nicoddemus for the PR.
Add buffer attribute to stdin stub class pytest.capture.DontReadFromInput Thanks @joguSD for the PR.
Fix UnicodeEncodeError when string comparison with unicode has failed. (#1864) Thanks @AiOO for the PR.
pytest_plugins is now handled correctly if defined as a string (as opposed as a sequence of strings) when modules are considered for assertion rewriting. Due to this bug, much more modules were being rewritten than necessary if a test suite uses pytest_plugins to load internal plugins (#1888). Thanks @jaraco for the report and @nicoddemus for the PR (#1891).
Do not call tearDown and cleanups when running tests from unittest.TestCase subclasses with --pdb enabled. This allows proper post mortem debugging for all applications which have significant logic in their tearDown machinery (#1890). Thanks @mbyt for the PR.
Fix use of deprecated getfuncargvalue method in the internal doctest plugin. Thanks @ViviCoder for the report (#1898).

3.0.1

Fix regression when importorskip is used at module level (#1822). Thanks @jaraco and @The-Compiler for the report and @nicoddemus for the PR.
Fix parametrization scope when session fixtures are used in conjunction with normal parameters in the same call (#1832). Thanks @The-Compiler for the report, @Kingdread and @nicoddemus for the PR.
Fix internal error when parametrizing tests or fixtures using an empty ids argument (#1849). Thanks @OPpuolitaival for the report and @nicoddemus for the PR.
Fix loader error when running pytest embedded in a zipfile. Thanks @mbachry for the PR.

3.0.0

Incompatible changes

A number of incompatible changes were made in this release, with the intent of removing features deprecated for a long time or change existing behaviors in order to make them less surprising/more useful.

Reinterpretation mode has now been removed. Only plain and rewrite mode are available, consequently the --assert=reinterp option is no longer available. This also means files imported from plugins or conftest.py will not benefit from improved assertions by default, you should use pytest.register_assert_rewrite() to explicitly turn on assertion rewriting for those files. Thanks @flub for the PR.
The following deprecated commandline options were removed:
- --genscript: no longer supported;
- --no-assert: use --assert=plain instead;
- --nomagic: use --assert=plain instead;
- --report: use -r instead;
Thanks to @RedBeardCode for the PR (#1664).
ImportErrors in plugins now are a fatal error instead of issuing a pytest warning (#1479). Thanks to @The-Compiler for the PR.
Removed support code for Python 3 versions < 3.3 (#1627).
Removed all py.test-X* entry points. The versioned, suffixed entry points were never documented and a leftover from a pre-virtualenv era. These entry points also created broken entry points in wheels, so removing them also removes a source of confusion for users (#1632). Thanks @obestwalter for the PR.
pytest.skip() now raises an error when used to decorate a test function, as opposed to its original intent (to imperatively skip a test inside a test function). Previously this usage would cause the entire module to be skipped (#607). Thanks @omarkohl for the complete PR (#1519).
Exit tests if a collection error occurs. A poll indicated most users will hit CTRL-C anyway as soon as they see collection errors, so pytest might as well make that the default behavior (#1421). A --continue-on-collection-errors option has been added to restore the previous behaviour. Thanks @olegpidsadnyi and @omarkohl for the complete PR (#1628).
Renamed the pytest pdb module (plugin) into debugging to avoid clashes with the builtin pdb module.
Raise a helpful failure message when requesting a parametrized fixture at runtime, e.g. with request.getfixturevalue. Previously these parameters were simply never defined, so a fixture decorated like @pytest.fixture(params=[0, 1, 2]) only ran once (#460). Thanks to @nikratio for the bug report, @RedBeardCode and @tomviner for the PR.
_pytest.monkeypatch.monkeypatch class has been renamed to _pytest.monkeypatch.MonkeyPatch so it doesn't conflict with the monkeypatch fixture.
--exitfirst / -x can now be overridden by a following --maxfail=N and is just a synonym for --maxfail=1.

New Features

Support nose-style __test__ attribute on methods of classes, including unittest-style Classes. If set to False, the test will not be collected.
New doctest_namespace fixture for injecting names into the namespace in which doctests run. Thanks @milliams for the complete PR (#1428).
New --doctest-report option available to change the output format of diffs when running (failing) doctests (implements #1749). Thanks @hartym for the PR.
New name argument to pytest.fixture decorator which allows a custom name for a fixture (to solve the funcarg-shadowing-fixture problem). Thanks @novas0x2a for the complete PR (#1444).
New approx() function for easily comparing floating-point numbers in tests. Thanks @kalekundert for the complete PR (#1441).
Ability to add global properties in the final xunit output file by accessing the internal junitxml plugin (experimental). Thanks @tareqalayan for the complete PR #1454).
New ExceptionInfo.match() method to match a regular expression on the string representation of an exception (#372). Thanks @omarkohl for the complete PR (#1502).
__tracebackhide__ can now also be set to a callable which then can decide whether to filter the traceback based on the ExceptionInfo object passed to it. Thanks @The-Compiler for the complete PR (#1526).
New pytest_make_parametrize_id(config, val) hook which can be used by plugins to provide friendly strings for custom types. Thanks @palaviv for the PR.
capsys and capfd now have a disabled() context-manager method, which can be used to temporarily disable capture within a test. Thanks @nicoddemus for the PR.
New cli flag --fixtures-per-test: shows which fixtures are being used for each selected test item. Features doc strings of fixtures by default. Can also show where fixtures are defined if combined with -v. Thanks @hackebrot for the PR.
Introduce pytest command as recommended entry point. Note that py.test still works and is not scheduled for removal. Closes proposal #1629. Thanks @obestwalter and @davehunt for the complete PR (#1633).
New cli flags:
- --setup-plan: performs normal collection and reports the potential setup and teardown and does not execute any fixtures and tests;
- --setup-only: performs normal collection, executes setup and teardown of fixtures and reports them;
- --setup-show: performs normal test execution and additionally shows setup and teardown of fixtures;
- --keep-duplicates: py.test now ignores duplicated paths given in the command line. To retain the previous behavior where the same test could be run multiple times by specifying it in the command-line multiple times, pass the --keep-duplicates argument (#1609);
Thanks @d6e, @kvas-it, @sallner, @ioggstream and @omarkohl for the PRs.
New CLI flag --override-ini/-o: overrides values from the ini file. For example: "-o xfail_strict=True"'. Thanks @blueyed and @fengxx for the PR.
New hooks:
- pytest_fixture_setup(fixturedef, request): executes fixture setup;
- pytest_fixture_post_finalizer(fixturedef): called after the fixture's finalizer and has access to the fixture's result cache.
Thanks @d6e, @sallner.
Issue warnings for asserts whose test is a tuple literal. Such asserts will never fail because tuples are always truthy and are usually a mistake (see #1562). Thanks @kvas-it, for the PR.
Allow passing a custom debugger class (e.g. --pdbcls=IPython.core.debugger:Pdb). Thanks to @anntzer for the PR.

Changes

Plugins now benefit from assertion rewriting. Thanks @sober7, @nicoddemus and @flub for the PR.
Change report.outcome for xpassed tests to "passed" in non-strict mode and "failed" in strict mode. Thanks to @hackebrot for the PR (#1795) and @gprasad84 for report (#1546).
Tests marked with xfail(strict=False) (the default) now appear in JUnitXML reports as passing tests instead of skipped. Thanks to @hackebrot for the PR (#1795).
Highlight path of the file location in the error report to make it easier to copy/paste. Thanks @suzaku for the PR (#1778).
Fixtures marked with @pytest.fixture can now use yield statements exactly like those marked with the @pytest.yield_fixture decorator. This change renders @pytest.yield_fixture deprecated and makes @pytest.fixture with yield statements the preferred way to write teardown code (#1461). Thanks @csaftoiu for bringing this to attention and @nicoddemus for the PR.
Explicitly passed parametrize ids do not get escaped to ascii (#1351). Thanks @ceridwen for the PR.
Fixtures are now sorted in the error message displayed when an unknown fixture is declared in a test function. Thanks @nicoddemus for the PR.
pytest_terminal_summary hook now receives the exitstatus of the test session as argument. Thanks @blueyed for the PR (#1809).
Parametrize ids can accept None as specific test id, in which case the automatically generated id for that argument will be used. Thanks @palaviv for the complete PR (#1468).
The parameter to xunit-style setup/teardown methods (setup_method, setup_module, etc.) is now optional and may be omitted. Thanks @okken for bringing this to attention and @nicoddemus for the PR.
Improved automatic id generation selection in case of duplicate ids in parametrize. Thanks @palaviv for the complete PR (#1474).
Now pytest warnings summary is shown up by default. Added a new flag --disable-pytest-warnings to explicitly disable the warnings summary (#1668).
Make ImportError during collection more explicit by reminding the user to check the name of the test module/package(s) (#1426). Thanks @omarkohl for the complete PR (#1520).
Add build/ and dist/ to the default --norecursedirs list. Thanks @mikofski for the report and @tomviner for the PR (#1544).
pytest.raises in the context manager form accepts a custom message to raise when no exception occurred. Thanks @palaviv for the complete PR (#1616).
conftest.py files now benefit from assertion rewriting; previously it was only available for test modules. Thanks @flub, @sober7 and @nicoddemus for the PR (#1619).
Text documents without any doctests no longer appear as "skipped". Thanks @graingert for reporting and providing a full PR (#1580).
Ensure that a module within a namespace package can be found when it is specified on the command line together with the --pyargs option. Thanks to @taschini for the PR (#1597).
Always include full assertion explanation during assertion rewriting. The previous behaviour was hiding sub-expressions that happened to be False, assuming this was redundant information. Thanks @bagerard for reporting (#1503). Thanks to @davehunt and @tomviner for the PR.
OptionGroup.addoption() now checks if option names were already added before, to make it easier to track down issues like #1618. Before, you only got exceptions later from argparse library, giving no clue about the actual reason for double-added options.
yield-based tests are considered deprecated and will be removed in pytest-4.0. Thanks @nicoddemus for the PR.
[pytest] sections in setup.cfg files should now be named [tool:pytest] to avoid conflicts with other distutils commands (see #567). [pytest] sections in pytest.ini or tox.ini files are supported and unchanged. Thanks @nicoddemus for the PR.
Using pytest_funcarg__ prefix to declare fixtures is considered deprecated and will be removed in pytest-4.0 (#1684). Thanks @nicoddemus for the PR.
Passing a command-line string to pytest.main() is considered deprecated and scheduled for removal in pytest-4.0. It is recommended to pass a list of arguments instead (#1723).
Rename getfuncargvalue to getfixturevalue. getfuncargvalue is still present but is now considered deprecated. Thanks to @RedBeardCode and @tomviner for the PR (#1626).
optparse type usage now triggers DeprecationWarnings (#1740).
optparse backward compatibility supports float/complex types (#457).
Refined logic for determining the rootdir, considering only valid paths which fixes a number of issues: #1594, #1435 and #1471. Updated the documentation according to current behavior. Thanks to @blueyed, @davehunt and @matthiasha for the PR.
Always include full assertion explanation. The previous behaviour was hiding sub-expressions that happened to be False, assuming this was redundant information. Thanks @bagerard for reporting (#1503). Thanks to @davehunt and @tomviner for PR.
Better message in case of not using parametrized variable (see #1539). Thanks to @tramwaj29 for the PR.
Updated docstrings with a more uniform style.
Add stderr write for pytest.exit(msg) during startup. Previously the message was never shown. Thanks @BeyondEvil for reporting #1210. Thanks to @JonathonSonesen and @tomviner for the PR.
No longer display the incorrect test deselection reason (#1372). Thanks @ronnypfannschmidt for the PR.
The --resultlog command line option has been deprecated: it is little used and there are more modern and better alternatives (see #830). Thanks @nicoddemus for the PR.
Improve error message with fixture lookup errors: add an 'E' to the first line and '>' to the rest. Fixes #717. Thanks @blueyed for reporting and a PR, @eolo999 for the initial PR and @tomviner for his guidance during EuroPython2016 sprint.

Bug Fixes

Parametrize now correctly handles duplicated test ids.
Fix internal error issue when the method argument is missing for teardown_method() (#1605).
Fix exception visualization in case the current working directory (CWD) gets deleted during testing (#1235). Thanks @bukzor for reporting. PR by @marscher.
Improve test output for logical expression with brackets (#925). Thanks @DRMacIver for reporting and @RedBeardCode for the PR.
Create correct diff for strings ending with newlines (#1553). Thanks @Vogtinator for reporting and @RedBeardCode and @tomviner for the PR.
ConftestImportFailure now shows the traceback making it easier to identify bugs in conftest.py files (#1516). Thanks @txomon for the PR.
Text documents without any doctests no longer appear as "skipped". Thanks @graingert for reporting and providing a full PR (#1580).
Fixed collection of classes with custom __new__ method. Fixes #1579. Thanks to @Stranger6667 for the PR.
Fixed scope overriding inside metafunc.parametrize (#634). Thanks to @Stranger6667 for the PR.
Fixed the total tests tally in junit xml output (#1798). Thanks to @cryporchild for the PR.
Fixed off-by-one error with lines from request.node.warn. Thanks to @blueyed for the PR.

2.9.2

Bug Fixes

fix #510: skip tests where one parameterize dimension was empty thanks Alex Stapleton for the Report and @RonnyPfannschmidt for the PR
Fix Xfail does not work with condition keyword argument. Thanks @astraw38 for reporting the issue (#1496) and @tomviner for PR the (#1524).
Fix win32 path issue when puttinging custom config file with absolute path in pytest.main("-c your_absolute_path").
Fix maximum recursion depth detection when raised error class is not aware of unicode/encoded bytes. Thanks @prusse-martin for the PR (#1506).
Fix pytest.mark.skip mark when used in strict mode. Thanks @pquentin for the PR and @RonnyPfannschmidt for showing how to fix the bug.
Minor improvements and fixes to the documentation. Thanks @omarkohl for the PR.
Fix --fixtures to show all fixture definitions as opposed to just one per fixture name. Thanks to @hackebrot for the PR.

2.9.1

Bug Fixes

Improve error message when a plugin fails to load. Thanks @nicoddemus for the PR.
Fix (#1178): pytest.fail with non-ascii characters raises an internal pytest error. Thanks @nicoddemus for the PR.
Fix (#469): junit parses report.nodeid incorrectly, when params IDs contain ::. Thanks @tomviner for the PR (#1431).
Fix (#578): SyntaxErrors containing non-ascii lines at the point of failure generated an internal py.test error. Thanks @asottile for the report and @nicoddemus for the PR.
Fix (#1437): When passing in a bytestring regex pattern to parameterize attempt to decode it as utf-8 ignoring errors.
Fix (#649): parametrized test nodes cannot be specified to run on the command line.
Fix (#138): better reporting for python 3.3+ chained exceptions

2.9.0

New Features

New pytest.mark.skip mark, which unconditionally skips marked tests. Thanks @MichaelAquilina for the complete PR (#1040).
--doctest-glob may now be passed multiple times in the command-line. Thanks @jab and @nicoddemus for the PR.
New -rp and -rP reporting options give the summary and full output of passing tests, respectively. Thanks to @codewarrior0 for the PR.
pytest.mark.xfail now has a strict option, which makes XPASS tests to fail the test suite (defaulting to False). There's also a xfail_strict ini option that can be used to configure it project-wise. Thanks @rabbbit for the request and @nicoddemus for the PR (#1355).
Parser.addini now supports options of type bool. Thanks @nicoddemus for the PR.
New ALLOW_BYTES doctest option. This strips b prefixes from byte strings in doctest output (similar to ALLOW_UNICODE). Thanks @jaraco for the request and @nicoddemus for the PR (#1287).
Give a hint on KeyboardInterrupt to use the --fulltrace option to show the errors. Fixes #1366. Thanks to @hpk42 for the report and @RonnyPfannschmidt for the PR.
Catch IndexError exceptions when getting exception source location. Fixes a pytest internal error for dynamically generated code (fixtures and tests) where source lines are fake by intention.

Changes

Important: py.code has been merged into the pytest repository as pytest._code. This decision was made because py.code had very few uses outside pytest and the fact that it was in a different repository made it difficult to fix bugs on its code in a timely manner. The team hopes with this to be able to better refactor out and improve that code. This change shouldn't affect users, but it is useful to let users aware if they encounter any strange behavior.

Keep in mind that the code for pytest._code is private and experimental, so you definitely should not import it explicitly!

Please note that the original py.code is still available in pylib.
pytest_enter_pdb now optionally receives the pytest config object. Thanks @nicoddemus for the PR.
Removed code and documentation for Python 2.5 or lower versions, including removal of the obsolete _pytest.assertion.oldinterpret module. Thanks @nicoddemus for the PR (#1226).
Comparisons now always show up in full when CI or BUILD_NUMBER is found in the environment, even when -vv isn't used. Thanks @The-Compiler for the PR.
--lf and --ff now support long names: --last-failed and --failed-first respectively. Thanks @MichaelAquilina for the PR.
Added expected exceptions to pytest.raises fail message.
Collection only displays progress ("collecting X items") when in a terminal. This avoids cluttering the output when using --color=yes to obtain colors in CI integrations systems (#1397).

Bug Fixes

The -s and -c options should now work under xdist; Config.fromdictargs now represents its input much more faithfully. Thanks to @bukzor for the complete PR (#680).
Fix (#1290): support Python 3.5's @ operator in assertion rewriting. Thanks @Shinkenjoe for report with test case and @tomviner for the PR.
Fix formatting utf-8 explanation messages (#1379). Thanks @biern for the PR.
Fix traceback style docs to describe all of the available options (auto/long/short/line/native/no), with auto being the default since v2.6. Thanks @hackebrot for the PR.
Fix (#1422): junit record_xml_property doesn't allow multiple records with same name.

2.8.7

fix #1338: use predictable object resolution for monkeypatch

2.8.6

fix #1259: allow for double nodeids in junitxml, this was a regression failing plugins combinations like pytest-pep8 + pytest-flakes
Workaround for exception that occurs in pyreadline when using --pdb with standard I/O capture enabled. Thanks Erik M. Bray for the PR.
fix #900: Better error message in case the target of a monkeypatch call raises an ImportError.
fix #1292: monkeypatch calls (setattr, setenv, etc.) are now O(1). Thanks David R. MacIver for the report and Bruno Oliveira for the PR.
fix #1223: captured stdout and stderr are now properly displayed before entering pdb when --pdb is used instead of being thrown away. Thanks Cal Leeming for the PR.
fix #1305: pytest warnings emitted during pytest_terminal_summary are now properly displayed. Thanks Ionel Maries Cristian for the report and Bruno Oliveira for the PR.
fix #628: fixed internal UnicodeDecodeError when doctests contain unicode. Thanks Jason R. Coombs for the report and Bruno Oliveira for the PR.
fix #1334: Add captured stdout to jUnit XML report on setup error. Thanks Georgy Dyuldin for the PR.

2.8.5

fix #1243: fixed issue where class attributes injected during collection could break pytest. PR by Alexei Kozlenok, thanks Ronny Pfannschmidt and Bruno Oliveira for the review and help.
fix #1074: precompute junitxml chunks instead of storing the whole tree in objects Thanks Bruno Oliveira for the report and Ronny Pfannschmidt for the PR
fix #1238: fix pytest.deprecated_call() receiving multiple arguments (Regression introduced in 2.8.4). Thanks Alex Gaynor for the report and Bruno Oliveira for the PR.

2.8.4

fix #1190: deprecated_call() now works when the deprecated function has been already called by another test in the same module. Thanks Mikhail Chernykh for the report and Bruno Oliveira for the PR.
fix #1198: --pastebin option now works on Python 3. Thanks Mehdy Khoshnoody for the PR.
fix #1219: --pastebin now works correctly when captured output contains non-ascii characters. Thanks Bruno Oliveira for the PR.
fix #1204: another error when collecting with a nasty __getattr__(). Thanks Florian Bruhin for the PR.
fix the summary printed when no tests did run. Thanks Florian Bruhin for the PR.
fix #1185 - ensure MANIFEST.in exactly matches what should go to a sdist
a number of documentation modernizations wrt good practices. Thanks Bruno Oliveira for the PR.

2.8.3

fix #1169: add __name__ attribute to testcases in TestCaseFunction to support the @unittest.skip decorator on functions and methods. Thanks Lee Kamentsky for the PR.
fix #1035: collecting tests if test module level obj has __getattr__(). Thanks Suor for the report and Bruno Oliveira / Tom Viner for the PR.
fix #331: don't collect tests if their failure cannot be reported correctly e.g. they are a callable instance of a class.
fix #1133: fixed internal error when filtering tracebacks where one entry belongs to a file which is no longer available. Thanks Bruno Oliveira for the PR.
enhancement made to highlight in red the name of the failing tests so they stand out in the output. Thanks Gabriel Reis for the PR.
add more talks to the documentation
extend documentation on the --ignore cli option
use pytest-runner for setuptools integration
minor fixes for interaction with OS X El Capitan system integrity protection (thanks Florian)

2.8.2

fix #1085: proper handling of encoding errors when passing encoded byte strings to pytest.parametrize in Python 2. Thanks Themanwithoutaplan for the report and Bruno Oliveira for the PR.
fix #1087: handling SystemError when passing empty byte strings to pytest.parametrize in Python 3. Thanks Paul Kehrer for the report and Bruno Oliveira for the PR.
fix #995: fixed internal error when filtering tracebacks where one entry was generated by an exec() statement. Thanks Daniel Hahler, Ashley C Straw, Philippe Gauthier and Pavel Savchenko for contributing and Bruno Oliveira for the PR.
fix #1100 and #1057: errors when using autouse fixtures and doctest modules. Thanks Sergey B Kirpichev and Vital Kudzelka for contributing and Bruno Oliveira for the PR.

2.8.1

fix #1034: Add missing nodeid on pytest_logwarning call in addhook. Thanks Simon Gomizelj for the PR.
'deprecated_call' is now only satisfied with a DeprecationWarning or PendingDeprecationWarning. Before 2.8.0, it accepted any warning, and 2.8.0 made it accept only DeprecationWarning (but not PendingDeprecationWarning). Thanks Alex Gaynor for the issue and Eric Hunsberger for the PR.
fix issue #1073: avoid calling __getattr__ on potential plugin objects. This fixes an incompatibility with pytest-django. Thanks Andreas Pelme, Bruno Oliveira and Ronny Pfannschmidt for contributing and Holger Krekel for the fix.
Fix issue #704: handle versionconflict during plugin loading more gracefully. Thanks Bruno Oliveira for the PR.
Fix issue #1064: ""--junitxml" regression when used with the "pytest-xdist" plugin, with test reports being assigned to the wrong tests. Thanks Daniel Grunwald for the report and Bruno Oliveira for the PR.
(experimental) adapt more SEMVER style versioning and change meaning of master branch in git repo: "master" branch now keeps the bugfixes, changes aimed for micro releases. "features" branch will only be be released with minor or major pytest releases.
Fix issue #766 by removing documentation references to distutils. Thanks Russel Winder.
Fix issue #1030: now byte-strings are escaped to produce item node ids to make them always serializable. Thanks Andy Freeland for the report and Bruno Oliveira for the PR.
Python 2: if unicode parametrized values are convertible to ascii, their ascii representation is used for the node id.
Fix issue #411: Add __eq__ method to assertion comparison example. Thanks Ben Webb.
Fix issue #653: deprecated_call can be used as context manager.
fix issue 877: properly handle assertion explanations with non-ascii repr Thanks Mathieu Agopian for the report and Ronny Pfannschmidt for the PR.
fix issue 1029: transform errors when writing cache values into pytest-warnings

2.8.0

new --lf and -ff options to run only the last failing tests or "failing tests first" from the last run. This functionality is provided through porting the formerly external pytest-cache plugin into pytest core. BACKWARD INCOMPAT: if you used pytest-cache's functionality to persist data between test runs be aware that we don't serialize sets anymore. Thanks Ronny Pfannschmidt for most of the merging work.
"-r" option now accepts "a" to include all possible reports, similar to passing "fEsxXw" explicitly (isse960). Thanks Abhijeet Kasurde for the PR.
avoid python3.5 deprecation warnings by introducing version specific inspection helpers, thanks Michael Droettboom.
fix issue562: @nose.tools.istest now fully respected.
fix issue934: when string comparison fails and a diff is too large to display without passing -vv, still show a few lines of the diff. Thanks Florian Bruhin for the report and Bruno Oliveira for the PR.
fix issue736: Fix a bug where fixture params would be discarded when combined with parametrization markers. Thanks to Markus Unterwaditzer for the PR.
fix issue710: introduce ALLOW_UNICODE doctest option: when enabled, the u prefix is stripped from unicode strings in expected doctest output. This allows doctests which use unicode to run in Python 2 and 3 unchanged. Thanks Jason R. Coombs for the report and Bruno Oliveira for the PR.
parametrize now also generates meaningful test IDs for enum, regex and class objects (as opposed to class instances). Thanks to Florian Bruhin for the PR.
Add 'warns' to assert that warnings are thrown (like 'raises'). Thanks to Eric Hunsberger for the PR.
Fix issue683: Do not apply an already applied mark. Thanks ojake for the PR.
Deal with capturing failures better so fewer exceptions get lost to /dev/null. Thanks David Szotten for the PR.
fix issue730: deprecate and warn about the --genscript option. Thanks Ronny Pfannschmidt for the report and Christian Pommranz for the PR.
fix issue751: multiple parametrize with ids bug if it parametrizes class with two or more test methods. Thanks Sergey Chipiga for reporting and Jan Bednarik for PR.
fix issue82: avoid loading conftest files from setup.cfg/pytest.ini/tox.ini files and upwards by default (--confcutdir can still be set to override this). Thanks Bruno Oliveira for the PR.
fix issue768: docstrings found in python modules were not setting up session fixtures. Thanks Jason R. Coombs for reporting and Bruno Oliveira for the PR.
added tmpdir_factory, a session-scoped fixture that can be used to create directories under the base temporary directory. Previously this object was installed as a _tmpdirhandler attribute of the config object, but now it is part of the official API and using config._tmpdirhandler is deprecated. Thanks Bruno Oliveira for the PR.
fix issue808: pytest's internal assertion rewrite hook now implements the optional PEP302 get_data API so tests can access data files next to them. Thanks xmo-odoo for request and example and Bruno Oliveira for the PR.
rootdir and inifile are now displayed during usage errors to help users diagnose problems such as unexpected ini files which add unknown options being picked up by pytest. Thanks to Pavel Savchenko for bringing the problem to attention in #821 and Bruno Oliveira for the PR.
Summary bar now is colored yellow for warning situations such as: all tests either were skipped or xpass/xfailed, or no tests were run at all (this is a partial fix for issue500).
fix issue812: pytest now exits with status code 5 in situations where no tests were run at all, such as the directory given in the command line does not contain any tests or as result of a command line option filters all out all tests (-k for example). Thanks Eric Siegerman (issue812) and Bruno Oliveira for the PR.
Summary bar now is colored yellow for warning situations such as: all tests either were skipped or xpass/xfailed, or no tests were run at all (related to issue500). Thanks Eric Siegerman.
New testpaths ini option: list of directories to search for tests when executing pytest from the root directory. This can be used to speed up test collection when a project has well specified directories for tests, being usually more practical than configuring norecursedirs for all directories that do not contain tests. Thanks to Adrian for idea (#694) and Bruno Oliveira for the PR.
fix issue713: JUnit XML reports for doctest failures. Thanks Punyashloka Biswal.
fix issue970: internal pytest warnings now appear as "pytest-warnings" in the terminal instead of "warnings", so it is clear for users that those warnings are from pytest and not from the builtin "warnings" module. Thanks Bruno Oliveira.
Include setup and teardown in junitxml test durations. Thanks Janne Vanhala.
fix issue735: assertion failures on debug versions of Python 3.4+
new option --import-mode to allow to change test module importing behaviour to append to sys.path instead of prepending. This better allows to run test modules against installated versions of a package even if the package under test has the same import root. In this example:
```
testing/__init__.py
testing/test_pkg_under_test.py
pkg_under_test/
```
the tests will run against the installed version of pkg_under_test when --import-mode=append is used whereas by default they would always pick up the local version. Thanks Holger Krekel.
pytester: add method TmpTestdir.delete_loaded_modules(), and call it from inline_run() to allow temporary modules to be reloaded. Thanks Eduardo Schettino.
internally refactor pluginmanager API and code so that there is a clear distinction between a pytest-agnostic rather simple pluginmanager and the PytestPluginManager which adds a lot of behaviour, among it handling of the local conftest files. In terms of documented methods this is a backward compatible change but it might still break 3rd party plugins which relied on details like especially the pluginmanager.add_shutdown() API. Thanks Holger Krekel.
pluginmanagement: introduce pytest.hookimpl and pytest.hookspec decorators for setting impl/spec specific parameters. This substitutes the previous now deprecated use of pytest.mark which is meant to contain markers for test functions only.
write/refine docs for "writing plugins" which now have their own page and are separate from the "using/installing plugins`` page.
fix issue732: properly unregister plugins from any hook calling sites allowing to have temporary plugins during test execution.
deprecate and warn about __multicall__ argument in hook implementations. Use the hookwrapper mechanism instead already introduced with pytest-2.7.
speed up pytest's own test suite considerably by using inprocess tests by default (testrun can be modified with --runpytest=subprocess to create subprocesses in many places instead). The main APIs to run pytest in a test is "runpytest()" or "runpytest_subprocess" and "runpytest_inprocess" if you need a particular way of running the test. In all cases you get back a RunResult but the inprocess one will also have a "reprec" attribute with the recorded events/reports.
fix monkeypatch.setattr("x.y", raising=False) to actually not raise if "y" is not a pre-existing attribute. Thanks Florian Bruhin.
fix issue741: make running output from testdir.run copy/pasteable Thanks Bruno Oliveira.
add a new --noconftest argument which ignores all conftest.py files.
add file and line attributes to JUnit-XML output.
fix issue890: changed extension of all documentation files from txt to rst. Thanks to Abhijeet for the PR.
fix issue714: add ability to apply indirect=True parameter on particular argnames. Thanks Elizaveta239.
fix issue890: changed extension of all documentation files from txt to rst. Thanks to Abhijeet for the PR.
fix issue957: "# doctest: SKIP" option will now register doctests as SKIPPED rather than PASSED. Thanks Thomas Grainger for the report and Bruno Oliveira for the PR.
issue951: add new record_xml_property fixture, that supports logging additional information on xml output. Thanks David Diaz for the PR.
issue949: paths after normal options (for example -s, -v, etc) are now properly used to discover rootdir and ini files. Thanks Peter Lauri for the report and Bruno Oliveira for the PR.

2.7.3 (compared to 2.7.2)

Allow 'dev', 'rc', or other non-integer version strings in importorskip. Thanks to Eric Hunsberger for the PR.
fix issue856: consider --color parameter in all outputs (for example --fixtures). Thanks Barney Gale for the report and Bruno Oliveira for the PR.
fix issue855: passing str objects as plugins argument to pytest.main is now interpreted as a module name to be imported and registered as a plugin, instead of silently having no effect. Thanks xmo-odoo for the report and Bruno Oliveira for the PR.
fix issue744: fix for ast.Call changes in Python 3.5+. Thanks Guido van Rossum, Matthias Bussonnier, Stefan Zimmermann and Thomas Kluyver.
fix issue842: applying markers in classes no longer propagate this markers to superclasses which also have markers. Thanks xmo-odoo for the report and Bruno Oliveira for the PR.
preserve warning functions after call to pytest.deprecated_call. Thanks Pieter Mulder for PR.
fix issue854: autouse yield_fixtures defined as class members of unittest.TestCase subclasses now work as expected. Thannks xmo-odoo for the report and Bruno Oliveira for the PR.
fix issue833: --fixtures now shows all fixtures of collected test files, instead of just the fixtures declared on the first one. Thanks Florian Bruhin for reporting and Bruno Oliveira for the PR.
fix issue863: skipped tests now report the correct reason when a skip/xfail condition is met when using multiple markers. Thanks Raphael Pierzina for reporting and Bruno Oliveira for the PR.
optimized tmpdir fixture initialization, which should make test sessions faster (specially when using pytest-xdist). The only visible effect is that now pytest uses a subdirectory in the $TEMP directory for all directories created by this fixture (defaults to $TEMP/pytest-$USER). Thanks Bruno Oliveira for the PR.

2.7.2 (compared to 2.7.1)

fix issue767: pytest.raises value attribute does not contain the exception instance on Python 2.6. Thanks Eric Siegerman for providing the test case and Bruno Oliveira for PR.
Automatically create directory for junitxml and results log. Thanks Aron Curzon.
fix issue713: JUnit XML reports for doctest failures. Thanks Punyashloka Biswal.
fix issue735: assertion failures on debug versions of Python 3.4+ Thanks Benjamin Peterson.
fix issue114: skipif marker reports to internal skipping plugin; Thanks Floris Bruynooghe for reporting and Bruno Oliveira for the PR.
fix issue748: unittest.SkipTest reports to internal pytest unittest plugin. Thanks Thomas De Schampheleire for reporting and Bruno Oliveira for the PR.
fix issue718: failed to create representation of sets containing unsortable elements in python 2. Thanks Edison Gustavo Muenz.
fix issue756, fix issue752 (and similar issues): depend on py-1.4.29 which has a refined algorithm for traceback generation.

2.7.1 (compared to 2.7.0)

fix issue731: do not get confused by the braces which may be present and unbalanced in an object's repr while collapsing False explanations. Thanks Carl Meyer for the report and test case.
fix issue553: properly handling inspect.getsourcelines failures in FixtureLookupError which would lead to to an internal error, obfuscating the original problem. Thanks talljosh for initial diagnose/patch and Bruno Oliveira for final patch.
fix issue660: properly report scope-mismatch-access errors independently from ordering of fixture arguments. Also avoid the pytest internal traceback which does not provide information to the user. Thanks Holger Krekel.
streamlined and documented release process. Also all versions (in setup.py and documentation generation) are now read from _pytest/__init__.py. Thanks Holger Krekel.
fixed docs to remove the notion that yield-fixtures are experimental. They are here to stay :) Thanks Bruno Oliveira.
Support building wheels by using environment markers for the requirements. Thanks Ionel Maries Cristian.
fixed regression to 2.6.4 which surfaced e.g. in lost stdout capture printing when tests raised SystemExit. Thanks Holger Krekel.
reintroduced _pytest fixture of the pytester plugin which is used at least by pytest-xdist.

2.7.0 (compared to 2.6.4)

fix issue435: make reload() work when assert rewriting is active. Thanks Daniel Hahler.
fix issue616: conftest.py files and their contained fixutres are now properly considered for visibility, independently from the exact current working directory and test arguments that are used. Many thanks to Eric Siegerman and his PR235 which contains systematic tests for conftest visibility and now passes. This change also introduces the concept of a rootdir which is printed as a new pytest header and documented in the pytest customize web page.
change reporting of "diverted" tests, i.e. tests that are collected in one file but actually come from another (e.g. when tests in a test class come from a base class in a different file). We now show the nodeid and indicate via a postfix the other file.
add ability to set command line options by environment variable PYTEST_ADDOPTS.
added documentation on the new pytest-dev teams on bitbucket and github. See https://pytest.org/latest/contributing.html . Thanks to Anatoly for pushing and initial work on this.
fix issue650: new option --docttest-ignore-import-errors which will turn import errors in doctests into skips. Thanks Charles Cloud for the complete PR.
fix issue655: work around different ways that cause python2/3 to leak sys.exc_info into fixtures/tests causing failures in 3rd party code
fix issue615: assertion re-writing did not correctly escape % signs when formatting boolean operations, which tripped over mixing booleans with modulo operators. Thanks to Tom Viner for the report, triaging and fix.
implement issue351: add ability to specify parametrize ids as a callable to generate custom test ids. Thanks Brianna Laugher for the idea and implementation.
introduce and document new hookwrapper mechanism useful for plugins which want to wrap the execution of certain hooks for their purposes. This supersedes the undocumented __multicall__ protocol which pytest itself and some external plugins use. Note that pytest-2.8 is scheduled to drop supporting the old __multicall__ and only support the hookwrapper protocol.
majorly speed up invocation of plugin hooks
use hookwrapper mechanism in builtin pytest plugins.
add a doctest ini option for doctest flags, thanks Holger Peters.
add note to docs that if you want to mark a parameter and the parameter is a callable, you also need to pass in a reason to disambiguate it from the "decorator" case. Thanks Tom Viner.
"python_classes" and "python_functions" options now support glob-patterns for test discovery, as discussed in issue600. Thanks Ldiary Translations.
allow to override parametrized fixtures with non-parametrized ones and vice versa (bubenkoff).
fix issue463: raise specific error for 'parameterize' misspelling (pfctdayelise).
On failure, the sys.last_value, sys.last_type and sys.last_traceback are set, so that a user can inspect the error via postmortem debugging (almarklein).

2.6.4

Improve assertion failure reporting on iterables, by using ndiff and pprint.
removed outdated japanese docs from source tree.
docs for "pytest_addhooks" hook. Thanks Bruno Oliveira.
updated plugin index docs. Thanks Bruno Oliveira.
fix issue557: with "-k" we only allow the old style "-" for negation at the beginning of strings and even that is deprecated. Use "not" instead. This should allow to pick parametrized tests where "-" appeared in the parameter.
fix issue604: Escape % character in the assertion message.
fix issue620: add explanation in the --genscript target about what the binary blob means. Thanks Dinu Gherman.
fix issue614: fixed pastebin support.
fix issue620: add explanation in the --genscript target about what the binary blob means. Thanks Dinu Gherman.
fix issue614: fixed pastebin support.

2.6.3

fix issue575: xunit-xml was reporting collection errors as failures instead of errors, thanks Oleg Sinyavskiy.
fix issue582: fix setuptools example, thanks Laszlo Papp and Ronny Pfannschmidt.
Fix infinite recursion bug when pickling capture.EncodedFile, thanks Uwe Schmitt.
fix issue589: fix bad interaction with numpy and others when showing exceptions. Check for precise "maximum recursion depth exceed" exception instead of presuming any RuntimeError is that one (implemented in py dep). Thanks Charles Cloud for analysing the issue.
fix conftest related fixture visibility issue: when running with a CWD outside of a test package pytest would get fixture discovery wrong. Thanks to Wolfgang Schnerring for figuring out a reproducable example.
Introduce pytest_enter_pdb hook (needed e.g. by pytest_timeout to cancel the timeout when interactively entering pdb). Thanks Wolfgang Schnerring.
check xfail/skip also with non-python function test items. Thanks Floris Bruynooghe.

2.6.2

Added function pytest.freeze_includes(), which makes it easy to embed pytest into executables using tools like cx_freeze. See docs for examples and rationale. Thanks Bruno Oliveira.
Improve assertion rewriting cache invalidation precision.
fixed issue561: adapt autouse fixture example for python3.
fixed issue453: assertion rewriting issue with __repr__ containing "n{", "n}" and "n~".
fix issue560: correctly display code if an "else:" or "finally:" is followed by statements on the same line.
Fix example in monkeypatch documentation, thanks t-8ch.
fix issue572: correct tmpdir doc example for python3.
Do not mark as universal wheel because Python 2.6 is different from other builds due to the extra argparse dependency. Fixes issue566. Thanks sontek.
Implement issue549: user-provided assertion messages now no longer replace the py.test introspection message but are shown in addition to them.

2.6.1

No longer show line numbers in the --verbose output, the output is now purely the nodeid. The line number is still shown in failure reports. Thanks Floris Bruynooghe.
fix issue437 where assertion rewriting could cause pytest-xdist slaves to collect different tests. Thanks Bruno Oliveira.
fix issue555: add "errors" attribute to capture-streams to satisfy some distutils and possibly other code accessing sys.stdout.errors.
fix issue547 capsys/capfd also work when output capturing ("-s") is disabled.
address issue170: allow pytest.mark.xfail(...) to specify expected exceptions via an optional "raises=EXC" argument where EXC can be a single exception or a tuple of exception classes. Thanks David Mohr for the complete PR.
fix integration of pytest with unittest.mock.patch decorator when it uses the "new" argument. Thanks Nicolas Delaby for test and PR.
fix issue with detecting conftest files if the arguments contain "::" node id specifications (copy pasted from "-v" output)
fix issue544 by only removing "@NUM" at the end of "::" separated parts and if the part has an ".py" extension
don't use py.std import helper, rather import things directly. Thanks Bruno Oliveira.

2.6

Cache exceptions from fixtures according to their scope (issue 467).
fix issue537: Avoid importing old assertion reinterpretation code by default.
fix issue364: shorten and enhance tracebacks representation by default. The new "--tb=auto" option (default) will only display long tracebacks for the first and last entry. You can get the old behaviour of printing all entries as long entries with "--tb=long". Also short entries by default are now printed very similarly to "--tb=native" ones.
fix issue514: teach assertion reinterpretation about private class attributes
change -v output to include full node IDs of tests. Users can copy a node ID from a test run, including line number, and use it as a positional argument in order to run only a single test.
fix issue 475: fail early and comprehensible if calling pytest.raises with wrong exception type.
fix issue516: tell in getting-started about current dependencies.
cleanup setup.py a bit and specify supported versions. Thanks Jurko Gospodnetic for the PR.
change XPASS colour to yellow rather then red when tests are run with -v.
fix issue473: work around mock putting an unbound method into a class dict when double-patching.
fix issue498: if a fixture finalizer fails, make sure that the fixture is still invalidated.
fix issue453: the result of the pytest_assertrepr_compare hook now gets it's newlines escaped so that format_exception does not blow up.
internal new warning system: pytest will now produce warnings when it detects oddities in your test collection or execution. Warnings are ultimately sent to a new pytest_logwarning hook which is currently only implemented by the terminal plugin which displays warnings in the summary line and shows more details when -rw (report on warnings) is specified.
change skips into warnings for test classes with an __init__ and callables in test modules which look like a test but are not functions.
fix issue436: improved finding of initial conftest files from command line arguments by using the result of parse_known_args rather than the previous flaky heuristics. Thanks Marc Abramowitz for tests and initial fixing approaches in this area.
fix issue #479: properly handle nose/unittest(2) SkipTest exceptions during collection/loading of test modules. Thanks to Marc Schlaich for the complete PR.
fix issue490: include pytest_load_initial_conftests in documentation and improve docstring.
fix issue472: clarify that pytest.config.getvalue() cannot work if it's triggered ahead of command line parsing.
merge PR123: improved integration with mock.patch decorator on tests.
fix issue412: messing with stdout/stderr FD-level streams is now captured without crashes.
fix issue483: trial/py33 works now properly. Thanks Daniel Grana for PR.
improve example for pytest integration with "python setup.py test" which now has a generic "-a" or "--pytest-args" option where you can pass additional options as a quoted string. Thanks Trevor Bekolay.
simplified internal capturing mechanism and made it more robust against tests or setups changing FD1/FD2, also better integrated now with pytest.pdb() in single tests.
improvements to pytest's own test-suite leakage detection, courtesy of PRs from Marc Abramowitz
fix issue492: avoid leak in test_writeorg. Thanks Marc Abramowitz.
fix issue493: don't run tests in doc directory with python setup.py test (use tox -e doctesting for that)
fix issue486: better reporting and handling of early conftest loading failures
some cleanup and simplification of internal conftest handling.
work a bit harder to break reference cycles when catching exceptions. Thanks Jurko Gospodnetic.
fix issue443: fix skip examples to use proper comparison. Thanks Alex Groenholm.
support nose-style __test__ attribute on modules, classes and functions, including unittest-style Classes. If set to False, the test will not be collected.
fix issue512: show "<notset>" for arguments which might not be set in monkeypatch plugin. Improves output in documentation.

2.5.2

fix issue409 -- better interoperate with cx_freeze by not trying to import from collections.abc which causes problems for py27/cx_freeze. Thanks Wolfgang L. for reporting and tracking it down.
fixed docs and code to use "pytest" instead of "py.test" almost everywhere. Thanks Jurko Gospodnetic for the complete PR.
fix issue425: mention at end of "py.test -h" that --markers and --fixtures work according to specified test path (or current dir)
fix issue413: exceptions with unicode attributes are now printed correctly also on python2 and with pytest-xdist runs. (the fix requires py-1.4.20)
copy, cleanup and integrate py.io capture from pylib 1.4.20.dev2 (rev 13d9af95547e)
address issue416: clarify docs as to conftest.py loading semantics
fix issue429: comparing byte strings with non-ascii chars in assert expressions now work better. Thanks Floris Bruynooghe.
make capfd/capsys.capture private, its unused and shouldnt be exposed

2.5.1

merge new documentation styling PR from Tobias Bieniek.
fix issue403: allow parametrize of multiple same-name functions within a collection node. Thanks Andreas Kloeckner and Alex Gaynor for reporting and analysis.
Allow parameterized fixtures to specify the ID of the parameters by adding an ids argument to pytest.fixture() and pytest.yield_fixture(). Thanks Floris Bruynooghe.
fix issue404 by always using the binary xml escape in the junitxml plugin. Thanks Ronny Pfannschmidt.
fix issue407: fix addoption docstring to point to argparse instead of optparse. Thanks Daniel D. Wright.

2.5.0

dropped python2.5 from automated release testing of pytest itself which means it's probably going to break soon (but still works with this release we believe).
simplified and fixed implementation for calling finalizers when parametrized fixtures or function arguments are involved. finalization is now performed lazily at setup time instead of in the "teardown phase". While this might sound odd at first, it helps to ensure that we are correctly handling setup/teardown even in complex code. User-level code should not be affected unless it's implementing the pytest_runtest_teardown hook and expecting certain fixture instances are torn down within (very unlikely and would have been unreliable anyway).
PR90: add --color=yes|no|auto option to force terminal coloring mode ("auto" is default). Thanks Marc Abramowitz.
fix issue319 - correctly show unicode in assertion errors. Many thanks to Floris Bruynooghe for the complete PR. Also means we depend on py>=1.4.19 now.
fix issue396 - correctly sort and finalize class-scoped parametrized tests independently from number of methods on the class.
refix issue323 in a better way -- parametrization should now never cause Runtime Recursion errors because the underlying algorithm for re-ordering tests per-scope/per-fixture is not recursive anymore (it was tail-call recursive before which could lead to problems for more than >966 non-function scoped parameters).
fix issue290 - there is preliminary support now for parametrizing with repeated same values (sometimes useful to to test if calling a second time works as with the first time).
close issue240 - document precisely how pytest module importing works, discuss the two common test directory layouts, and how it interacts with PEP420-namespace packages.
fix issue246 fix finalizer order to be LIFO on independent fixtures depending on a parametrized higher-than-function scoped fixture. (was quite some effort so please bear with the complexity of this sentence :) Thanks Ralph Schmitt for the precise failure example.
fix issue244 by implementing special index for parameters to only use indices for paramentrized test ids
fix issue287 by running all finalizers but saving the exception from the first failing finalizer and re-raising it so teardown will still have failed. We reraise the first failing exception because it might be the cause for other finalizers to fail.
fix ordering when mock.patch or other standard decorator-wrappings are used with test methods. This fixues issue346 and should help with random "xdist" collection failures. Thanks to Ronny Pfannschmidt and Donald Stufft for helping to isolate it.
fix issue357 - special case "-k" expressions to allow for filtering with simple strings that are not valid python expressions. Examples: "-k 1.3" matches all tests parametrized with 1.3. "-k None" filters all tests that have "None" in their name and conversely "-k 'not None'". Previously these examples would raise syntax errors.
fix issue384 by removing the trial support code since the unittest compat enhancements allow trial to handle it on its own
don't hide an ImportError when importing a plugin produces one. fixes issue375.
fix issue275 - allow usefixtures and autouse fixtures for running doctest text files.
fix issue380 by making --resultlog only rely on longrepr instead of the "reprcrash" attribute which only exists sometimes.
address issue122: allow @pytest.fixture(params=iterator) by exploding into a list early on.
fix pexpect-3.0 compatibility for pytest's own tests. (fixes issue386)
allow nested parametrize-value markers, thanks James Lan for the PR.
fix unicode handling with new monkeypatch.setattr(import_path, value) API. Thanks Rob Dennis. Fixes issue371.
fix unicode handling with junitxml, fixes issue368.
In assertion rewriting mode on Python 2, fix the detection of coding cookies. See issue #330.
make "--runxfail" turn imperative pytest.xfail calls into no ops (it already did neutralize pytest.mark.xfail markers)
refine pytest / pkg_resources interactions: The AssertionRewritingHook PEP302 compliant loader now registers itself with setuptools/pkg_resources properly so that the pkg_resources.resource_stream method works properly. Fixes issue366. Thanks for the investigations and full PR to Jason R. Coombs.
pytestconfig fixture is now session-scoped as it is the same object during the whole test run. Fixes issue370.
avoid one surprising case of marker malfunction/confusion:
```
@pytest.mark.some(lambda arg: ...)
def test_function():
```
would not work correctly because pytest assumes @pytest.mark.some gets a function to be decorated already. We now at least detect if this arg is an lambda and thus the example will work. Thanks Alex Gaynor for bringing it up.
xfail a test on pypy that checks wrong encoding/ascii (pypy does not error out). fixes issue385.
internally make varnames() deal with classes's __init__, although it's not needed by pytest itself atm. Also fix caching. Fixes issue376.
fix issue221 - handle importing of namespace-package with no __init__.py properly.
refactor internal FixtureRequest handling to avoid monkeypatching. One of the positive user-facing effects is that the "request" object can now be used in closures.
fixed version comparison in pytest.importskip(modname, minverstring)
fix issue377 by clarifying in the nose-compat docs that pytest does not duplicate the unittest-API into the "plain" namespace.
fix verbose reporting for @mock'd test functions

2.4.2

on Windows require colorama and a newer py lib so that py.io.TerminalWriter() now uses colorama instead of its own ctypes hacks. (fixes issue365) thanks Paul Moore for bringing it up.
fix "-k" matching of tests where "repr" and "attr" and other names would cause wrong matches because of an internal implementation quirk (don't ask) which is now properly implemented. fixes issue345.
avoid tmpdir fixture to create too long filenames especially when parametrization is used (issue354)
fix pytest-pep8 and pytest-flakes / pytest interactions (collection names in mark plugin was assuming an item always has a function which is not true for those plugins etc.) Thanks Andi Zeidler.
introduce node.get_marker/node.add_marker API for plugins like pytest-pep8 and pytest-flakes to avoid the messy details of the node.keywords pseudo-dicts. Adapted docs.
remove attempt to "dup" stdout at startup as it's icky. the normal capturing should catch enough possibilities of tests messing up standard FDs.
add pluginmanager.do_configure(config) as a link to config.do_configure() for plugin-compatibility

2.4.1

When using parser.addoption() unicode arguments to the "type" keyword should also be converted to the respective types. thanks Floris Bruynooghe, @dnozay. (fixes issue360 and issue362)
fix dotted filename completion when using argcomplete thanks Anthon van der Neuth. (fixes issue361)
fix regression when a 1-tuple ("arg",) is used for specifying parametrization (the values of the parametrization were passed nested in a tuple). Thanks Donald Stufft.
merge doc typo fixes, thanks Andy Dirnberger

2.4

known incompatibilities:

if calling --genscript from python2.7 or above, you only get a standalone script which works on python2.7 or above. Use Python2.6 to also get a python2.5 compatible version.
all xunit-style teardown methods (nose-style, pytest-style, unittest-style) will not be called if the corresponding setup method failed, see issue322 below.
the pytest_plugin_unregister hook wasn't ever properly called and there is no known implementation of the hook - so it got removed.
pytest.fixture-decorated functions cannot be generators (i.e. use yield) anymore. This change might be reversed in 2.4.1 if it causes unforeseen real-life issues. However, you can always write and return an inner function/generator and change the fixture consumer to iterate over the returned generator. This change was done in lieu of the new pytest.yield_fixture decorator, see below.

new features:

experimentally introduce a new pytest.yield_fixture decorator which accepts exactly the same parameters as pytest.fixture but mandates a yield statement instead of a return statement from fixture functions. This allows direct integration with "with-style" context managers in fixture functions and generally avoids registering of finalization callbacks in favour of treating the "after-yield" as teardown code. Thanks Andreas Pelme, Vladimir Keleshev, Floris Bruynooghe, Ronny Pfannschmidt and many others for discussions.
allow boolean expression directly with skipif/xfail if a "reason" is also specified. Rework skipping documentation to recommend "condition as booleans" because it prevents surprises when importing markers between modules. Specifying conditions as strings will remain fully supported.
reporting: color the last line red or green depending if failures/errors occurred or everything passed. thanks Christian Theunert.
make "import pdb ; pdb.set_trace()" work natively wrt capturing (no "-s" needed anymore), making pytest.set_trace() a mere shortcut.
fix issue181: --pdb now also works on collect errors (and on internal errors) . This was implemented by a slight internal refactoring and the introduction of a new hook pytest_exception_interact hook (see next item).
fix issue341: introduce new experimental hook for IDEs/terminals to intercept debugging: pytest_exception_interact(node, call, report).
new monkeypatch.setattr() variant to provide a shorter invocation for patching out classes/functions from modules:

monkeypatch.setattr("requests.get", myfunc)

will replace the "get" function of the "requests" module with myfunc.
fix issue322: tearDownClass is not run if setUpClass failed. Thanks Mathieu Agopian for the initial fix. Also make all of pytest/nose finalizer mimick the same generic behaviour: if a setupX exists and fails, don't run teardownX. This internally introduces a new method "node.addfinalizer()" helper which can only be called during the setup phase of a node.
simplify pytest.mark.parametrize() signature: allow to pass a CSV-separated string to specify argnames. For example: pytest.mark.parametrize("input,expected", [(1,2), (2,3)]) works as well as the previous: pytest.mark.parametrize(("input", "expected"), ...).
add support for setUpModule/tearDownModule detection, thanks Brian Okken.
integrate tab-completion on options through use of "argcomplete". Thanks Anthon van der Neut for the PR.
change option names to be hyphen-separated long options but keep the old spelling backward compatible. py.test -h will only show the hyphenated version, for example "--collect-only" but "--collectonly" will remain valid as well (for backward-compat reasons). Many thanks to Anthon van der Neut for the implementation and to Hynek Schlawack for pushing us.
fix issue 308 - allow to mark/xfail/skip individual parameter sets when parametrizing. Thanks Brianna Laugher.
call new experimental pytest_load_initial_conftests hook to allow 3rd party plugins to do something before a conftest is loaded.

Bug fixes:

fix issue358 - capturing options are now parsed more properly by using a new parser.parse_known_args method.
pytest now uses argparse instead of optparse (thanks Anthon) which means that "argparse" is added as a dependency if installing into python2.6 environments or below.
fix issue333: fix a case of bad unittest/pytest hook interaction.
PR27: correctly handle nose.SkipTest during collection. Thanks Antonio Cuni, Ronny Pfannschmidt.
fix issue355: junitxml puts name="pytest" attribute to testsuite tag.
fix issue336: autouse fixture in plugins should work again.
fix issue279: improve object comparisons on assertion failure for standard datatypes and recognise collections.abc. Thanks to Brianna Laugher and Mathieu Agopian.
fix issue317: assertion rewriter support for the is_package method
fix issue335: document py.code.ExceptionInfo() object returned from pytest.raises(), thanks Mathieu Agopian.
remove implicit distribute_setup support from setup.py.
fix issue305: ignore any problems when writing pyc files.
SO-17664702: call fixture finalizers even if the fixture function partially failed (finalizers would not always be called before)
fix issue320 - fix class scope for fixtures when mixed with module-level functions. Thanks Anatloy Bubenkoff.
you can specify "-q" or "-qq" to get different levels of "quieter" reporting (thanks Katarzyna Jachim)
fix issue300 - Fix order of conftest loading when starting py.test in a subdirectory.
fix issue323 - sorting of many module-scoped arg parametrizations
make sessionfinish hooks execute with the same cwd-context as at session start (helps fix plugin behaviour which write output files with relative path such as pytest-cov)
fix issue316 - properly reference collection hooks in docs
fix issue 306 - cleanup of -k/-m options to only match markers/test names/keywords respectively. Thanks Wouter van Ackooy.
improved doctest counting for doctests in python modules -- files without any doctest items will not show up anymore and doctest examples are counted as separate test items. thanks Danilo Bellini.
fix issue245 by depending on the released py-1.4.14 which fixes py.io.dupfile to work with files with no mode. Thanks Jason R. Coombs.
fix junitxml generation when test output contains control characters, addressing issue267, thanks Jaap Broekhuizen
fix issue338: honor --tb style for setup/teardown errors as well. Thanks Maho.
fix issue307 - use yaml.safe_load in example, thanks Mark Eichin.
better parametrize error messages, thanks Brianna Laugher
pytest_terminal_summary(terminalreporter) hooks can now use ".section(title)" and ".line(msg)" methods to print extra information at the end of a test run.

2.3.5

fix issue169: respect --tb=style with setup/teardown errors as well.
never consider a fixture function for test function collection
allow re-running of test items / helps to fix pytest-reruntests plugin and also help to keep less fixture/resource references alive
put captured stdout/stderr into junitxml output even for passing tests (thanks Adam Goucher)
Issue 265 - integrate nose setup/teardown with setupstate so it doesnt try to teardown if it did not setup
issue 271 - dont write junitxml on slave nodes
Issue 274 - dont try to show full doctest example when doctest does not know the example location
issue 280 - disable assertion rewriting on buggy CPython 2.6.0
inject "getfixture()" helper to retrieve fixtures from doctests, thanks Andreas Zeidler
issue 259 - when assertion rewriting, be consistent with the default source encoding of ASCII on Python 2
issue 251 - report a skip instead of ignoring classes with init
issue250 unicode/str mixes in parametrization names and values now works
issue257, assertion-triggered compilation of source ending in a comment line doesn't blow up in python2.5 (fixed through py>=1.4.13.dev6)
fix --genscript option to generate standalone scripts that also work with python3.3 (importer ordering)
issue171 - in assertion rewriting, show the repr of some global variables
fix option help for "-k"
move long description of distribution into README.rst
improve docstring for metafunc.parametrize()
fix bug where using capsys with pytest.set_trace() in a test function would break when looking at capsys.readouterr()
allow to specify prefixes starting with "_" when customizing python_functions test discovery. (thanks Graham Horler)
improve PYTEST_DEBUG tracing output by puting extra data on a new lines with additional indent
ensure OutcomeExceptions like skip/fail have initialized exception attributes
issue 260 - don't use nose special setup on plain unittest cases
fix issue134 - print the collect errors that prevent running specified test items
fix issue266 - accept unicode in MarkEvaluator expressions

2.3.4

yielded test functions will now have autouse-fixtures active but cannot accept fixtures as funcargs - it's anyway recommended to rather use the post-2.0 parametrize features instead of yield, see: http://pytest.org/latest/example/parametrize.html
fix autouse-issue where autouse-fixtures would not be discovered if defined in a a/conftest.py file and tests in a/tests/test_some.py
fix issue226 - LIFO ordering for fixture teardowns
fix issue224 - invocations with >256 char arguments now work
fix issue91 - add/discuss package/directory level setups in example
allow to dynamically define markers via item.keywords[...]=assignment integrating with "-m" option
make "-k" accept an expressions the same as with "-m" so that one can write: -k "name1 or name2" etc. This is a slight incompatibility if you used special syntax like "TestClass.test_method" which you now need to write as -k "TestClass and test_method" to match a certain method in a certain test class.

2.3.3

fix issue214 - parse modules that contain special objects like e. g. flask's request object which blows up on getattr access if no request is active. thanks Thomas Waldmann.
fix issue213 - allow to parametrize with values like numpy arrays that do not support an __eq__ operator
fix issue215 - split test_python.org into multiple files
fix issue148 - @unittest.skip on classes is now recognized and avoids calling setUpClass/tearDownClass, thanks Pavel Repin
fix issue209 - reintroduce python2.4 support by depending on newer pylib which re-introduced statement-finding for pre-AST interpreters
nose support: only call setup if its a callable, thanks Andrew Taumoefolau
fix issue219 - add py2.4-3.3 classifiers to TROVE list
in tracebacks ,* arg values are now shown next to normal arguments (thanks Manuel Jacob)
fix issue217 - support mock.patch with pytest's fixtures - note that you need either mock-1.0.1 or the python3.3 builtin unittest.mock.
fix issue127 - improve documentation for pytest_addoption() and add a config.getoption(name) helper function for consistency.

2.3.2

fix issue208 and fix issue29 use new py version to avoid long pauses when printing tracebacks in long modules
fix issue205 - conftests in subdirs customizing pytest_pycollect_makemodule and pytest_pycollect_makeitem now work properly
fix teardown-ordering for parametrized setups
fix issue127 - better documentation for pytest_addoption and related objects.
fix unittest behaviour: TestCase.runtest only called if there are test methods defined
improve trial support: don't collect its empty unittest.TestCase.runTest() method
"python setup.py test" now works with pytest itself
fix/improve internal/packaging related bits:
- exception message check of test_nose.py now passes on python33 as well
- issue206 - fix test_assertrewrite.py to work when a global PYTHONDONTWRITEBYTECODE=1 is present
- add tox.ini to pytest distribution so that ignore-dirs and others config bits are properly distributed for maintainers who run pytest-own tests

2.3.1

fix issue202 - fix regression: using "self" from fixture functions now works as expected (it's the same "self" instance that a test method which uses the fixture sees)
skip pexpect using tests (test_pdb.py mostly) on freebsd* systems due to pexpect not supporting it properly (hanging)
link to web pages from --markers output which provides help for pytest.mark.* usage.

2.3.0

fix issue202 - better automatic names for parametrized test functions
fix issue139 - introduce @pytest.fixture which allows direct scoping and parametrization of funcarg factories.
fix issue198 - conftest fixtures were not found on windows32 in some circumstances with nested directory structures due to path manipulation issues
fix issue193 skip test functions with were parametrized with empty parameter sets
fix python3.3 compat, mostly reporting bits that previously depended on dict ordering
introduce re-ordering of tests by resource and parametrization setup which takes precedence to the usual file-ordering
fix issue185 monkeypatching time.time does not cause pytest to fail
fix issue172 duplicate call of pytest.fixture decoratored setup_module functions
fix junitxml=path construction so that if tests change the current working directory and the path is a relative path it is constructed correctly from the original current working dir.
fix "python setup.py test" example to cause a proper "errno" return
fix issue165 - fix broken doc links and mention stackoverflow for FAQ
catch unicode-issues when writing failure representations to terminal to prevent the whole session from crashing
fix xfail/skip confusion: a skip-mark or an imperative pytest.skip will now take precedence before xfail-markers because we can't determine xfail/xpass status in case of a skip. see also: http://stackoverflow.com/questions/11105828/in-py-test-when-i-explicitly-skip-a-test-that-is-marked-as-xfail-how-can-i-get
always report installed 3rd party plugins in the header of a test run
fix issue160: a failing setup of an xfail-marked tests should be reported as xfail (not xpass)
fix issue128: show captured output when capsys/capfd are used
fix issue179: propperly show the dependency chain of factories
pluginmanager.register(...) now raises ValueError if the plugin has been already registered or the name is taken
fix issue159: improve http://pytest.org/latest/faq.html especially with respect to the "magic" history, also mention pytest-django, trial and unittest integration.
make request.keywords and node.keywords writable. All descendant collection nodes will see keyword values. Keywords are dictionaries containing markers and other info.
fix issue 178: xml binary escapes are now wrapped in py.xml.raw
fix issue 176: correctly catch the builtin AssertionError even when we replaced AssertionError with a subclass on the python level
factory discovery no longer fails with magic global callables that provide no sane __code__ object (mock.call for example)
fix issue 182: testdir.inprocess_run now considers passed plugins
fix issue 188: ensure sys.exc_info is clear on python2

before calling into a test
fix issue 191: add unittest TestCase runTest method support
fix issue 156: monkeypatch correctly handles class level descriptors
reporting refinements:
- pytest_report_header now receives a "startdir" so that you can use startdir.bestrelpath(yourpath) to show nice relative path
- allow plugins to implement both pytest_report_header and pytest_sessionstart (sessionstart is invoked first).
- don't show deselected reason line if there is none
- py.test -vv will show all of assert comparisations instead of truncating

2.2.4

fix error message for rewritten assertions involving the % operator
fix issue 126: correctly match all invalid xml characters for junitxml binary escape
fix issue with unittest: now @unittest.expectedFailure markers should be processed correctly (you can also use @pytest.mark markers)
document integration with the extended distribute/setuptools test commands
fix issue 140: propperly get the real functions of bound classmethods for setup/teardown_class
fix issue #141: switch from the deceased paste.pocoo.org to bpaste.net
fix issue #143: call unconfigure/sessionfinish always when configure/sessionstart where called
fix issue #144: better mangle test ids to junitxml classnames
upgrade distribute_setup.py to 0.6.27

2.2.3

fix uploaded package to only include neccesary files

2.2.2

fix issue101: wrong args to unittest.TestCase test function now produce better output
fix issue102: report more useful errors and hints for when a test directory was renamed and some pyc/__pycache__ remain
fix issue106: allow parametrize to be applied multiple times e.g. from module, class and at function level.
fix issue107: actually perform session scope finalization
don't check in parametrize if indirect parameters are funcarg names
add chdir method to monkeypatch funcarg
fix crash resulting from calling monkeypatch undo a second time
fix issue115: make --collectonly robust against early failure (missing files/directories)
"-qq --collectonly" now shows only files and the number of tests in them
"-q --collectonly" now shows test ids
allow adding of attributes to test reports such that it also works with distributed testing (no upgrade of pytest-xdist needed)

2.2.1

fix issue99 (in pytest and py) internallerrors with resultlog now produce better output - fixed by normalizing pytest_internalerror input arguments.
fix issue97 / traceback issues (in pytest and py) improve traceback output in conjunction with jinja2 and cython which hack tracebacks
fix issue93 (in pytest and pytest-xdist) avoid "delayed teardowns": the final test in a test node will now run its teardown directly instead of waiting for the end of the session. Thanks Dave Hunt for the good reporting and feedback. The pytest_runtest_protocol as well as the pytest_runtest_teardown hooks now have "nextitem" available which will be None indicating the end of the test run.
fix collection crash due to unknown-source collected items, thanks to Ralf Schmitt (fixed by depending on a more recent pylib)

2.2.0

fix issue90: introduce eager tearing down of test items so that teardown function are called earlier.
add an all-powerful metafunc.parametrize function which allows to parametrize test function arguments in multiple steps and therefore from indepdenent plugins and palces.
add a @pytest.mark.parametrize helper which allows to easily call a test function with different argument values
Add examples to the "parametrize" example page, including a quick port of Test scenarios and the new parametrize function and decorator.
introduce registration for "pytest.mark.*" helpers via ini-files or through plugin hooks. Also introduce a "--strict" option which will treat unregistered markers as errors allowing to avoid typos and maintain a well described set of markers for your test suite. See exaples at http://pytest.org/latest/mark.html and its links.
issue50: introduce "-m marker" option to select tests based on markers (this is a stricter and more predictable version of '-k' in that "-m" only matches complete markers and has more obvious rules for and/or semantics.
new feature to help optimizing the speed of your tests: --durations=N option for displaying N slowest test calls and setup/teardown methods.
fix issue87: --pastebin now works with python3
fix issue89: --pdb with unexpected exceptions in doctest work more sensibly
fix and cleanup pytest's own test suite to not leak FDs
fix issue83: link to generated funcarg list
fix issue74: pyarg module names are now checked against imp.find_module false positives
fix compatibility with twisted/trial-11.1.0 use cases
simplify Node.listchain
simplify junitxml output code by relying on py.xml
add support for skip properties on unittest classes and functions

2.1.3

fix issue79: assertion rewriting failed on some comparisons in boolops
correctly handle zero length arguments (a la pytest '')
fix issue67 / junitxml now contains correct test durations, thanks ronny
fix issue75 / skipping test failure on jython
fix issue77 / Allow assertrepr_compare hook to apply to a subset of tests

2.1.2

fix assertion rewriting on files with windows newlines on some Python versions
refine test discovery by package/module name (--pyargs), thanks Florian Mayer
fix issue69 / assertion rewriting fixed on some boolean operations
fix issue68 / packages now work with assertion rewriting
fix issue66: use different assertion rewriting caches when the -O option is passed
don't try assertion rewriting on Jython, use reinterp

2.1.1

fix issue64 / pytest.set_trace now works within pytest_generate_tests hooks
fix issue60 / fix error conditions involving the creation of __pycache__
fix issue63 / assertion rewriting on inserts involving strings containing '%'
fix assertion rewriting on calls with a ** arg
don't cache rewritten modules if bytecode generation is disabled
fix assertion rewriting in read-only directories
fix issue59: provide system-out/err tags for junitxml output
fix issue61: assertion rewriting on boolean operations with 3 or more operands
you can now build a man page with "cd doc ; make man"

2.1.0

fix issue53 call nosestyle setup functions with correct ordering
fix issue58 and issue59: new assertion code fixes
merge Benjamin's assertionrewrite branch: now assertions for test modules on python 2.6 and above are done by rewriting the AST and saving the pyc file before the test module is imported. see doc/assert.txt for more info.
fix issue43: improve doctests with better traceback reporting on unexpected exceptions
fix issue47: timing output in junitxml for test cases is now correct
fix issue48: typo in MarkInfo repr leading to exception
fix issue49: avoid confusing error when initizaliation partially fails
fix issue44: env/username expansion for junitxml file path
show releaselevel information in test runs for pypy
reworked doc pages for better navigation and PDF generation
report KeyboardInterrupt even if interrupted during session startup
fix issue 35 - provide PDF doc version and download link from index page

2.0.3

fix issue38: nicer tracebacks on calls to hooks, particularly early configure/sessionstart ones
fix missing skip reason/meta information in junitxml files, reported via http://lists.idyll.org/pipermail/testing-in-python/2011-March/003928.html
fix issue34: avoid collection failure with "test" prefixed classes deriving from object.
don't require zlib (and other libs) for genscript plugin without --genscript actually being used.
speed up skips (by not doing a full traceback represenation internally)
fix issue37: avoid invalid characters in junitxml's output

2.0.2

tackle issue32 - speed up test runs of very quick test functions by reducing the relative overhead
fix issue30 - extended xfail/skipif handling and improved reporting. If you have a syntax error in your skip/xfail expressions you now get nice error reports.

Also you can now access module globals from xfail/skipif expressions so that this for example works now:
```
import pytest
import mymodule
@pytest.mark.skipif("mymodule.__version__[0] == "1")
def test_function():
    pass
```
This will not run the test function if the module's version string does not start with a "1". Note that specifying a string instead of a boolean expressions allows py.test to report meaningful information when summarizing a test run as to what conditions lead to skipping (or xfail-ing) tests.
fix issue28 - setup_method and pytest_generate_tests work together The setup_method fixture method now gets called also for test function invocations generated from the pytest_generate_tests hook.
fix issue27 - collectonly and keyword-selection (-k) now work together Also, if you do "py.test --collectonly -q" you now get a flat list of test ids that you can use to paste to the py.test commandline in order to execute a particular test.
fix issue25 avoid reported problems with --pdb and python3.2/encodings output
fix issue23 - tmpdir argument now works on Python3.2 and WindowsXP Starting with Python3.2 os.symlink may be supported. By requiring a newer py lib version the py.path.local() implementation acknowledges this.
fixed typos in the docs (thanks Victor Garcia, Brianna Laugher) and particular thanks to Laura Creighton who also revieved parts of the documentation.
fix slighly wrong output of verbose progress reporting for classes (thanks Amaury)
more precise (avoiding of) deprecation warnings for node.Class|Function accesses
avoid std unittest assertion helper code in tracebacks (thanks Ronny)

2.0.1

refine and unify initial capturing so that it works nicely even if the logging module is used on an early-loaded conftest.py file or plugin.
allow to omit "()" in test ids to allow for uniform test ids as produced by Alfredo's nice pytest.vim plugin.
fix issue12 - show plugin versions with "--version" and "--traceconfig" and also document how to add extra information to reporting test header
fix issue17 (import-* reporting issue on python3) by requiring py>1.4.0 (1.4.1 is going to include it)
fix issue10 (numpy arrays truth checking) by refining assertion interpretation in py lib
fix issue15: make nose compatibility tests compatible with python3 (now that nose-1.0 supports python3)
remove somewhat surprising "same-conftest" detection because it ignores conftest.py when they appear in several subdirs.
improve assertions ("not in"), thanks Floris Bruynooghe
improve behaviour/warnings when running on top of "python -OO" (assertions and docstrings are turned off, leading to potential false positives)
introduce a pytest_cmdline_processargs(args) hook to allow dynamic computation of command line arguments. This fixes a regression because py.test prior to 2.0 allowed to set command line options from conftest.py files which so far pytest-2.0 only allowed from ini-files now.
fix issue7: assert failures in doctest modules. unexpected failures in doctests will not generally show nicer, i.e. within the doctest failing context.
fix issue9: setup/teardown functions for an xfail-marked test will report as xfail if they fail but report as normally passing (not xpassing) if they succeed. This only is true for "direct" setup/teardown invocations because teardown_class/ teardown_module cannot closely relate to a single test.
fix issue14: no logging errors at process exit
refinements to "collecting" output on non-ttys
refine internal plugin registration and --traceconfig output
introduce a mechanism to prevent/unregister plugins from the command line, see http://pytest.org/plugins.html#cmdunregister
activate resultlog plugin by default
fix regression wrt yielded tests which due to the collection-before-running semantics were not setup as with pytest 1.3.4. Note, however, that the recommended and much cleaner way to do test parametraization remains the "pytest_generate_tests" mechanism, see the docs.

2.0.0

pytest-2.0 is now its own package and depends on pylib-2.0
new ability: python -m pytest / python -m pytest.main ability
new python invcation: pytest.main(args, plugins) to load some custom plugins early.
try harder to run unittest test suites in a more compatible manner by deferring setup/teardown semantics to the unittest package. also work harder to run twisted/trial and Django tests which should now basically work by default.
introduce a new way to set config options via ini-style files, by default setup.cfg and tox.ini files are searched. The old ways (certain environment variables, dynamic conftest.py reading is removed).
add a new "-q" option which decreases verbosity and prints a more nose/unittest-style "dot" output.
fix issue135 - marks now work with unittest test cases as well
fix issue126 - introduce py.test.set_trace() to trace execution via PDB during the running of tests even if capturing is ongoing.
fix issue123 - new "python -m py.test" invocation for py.test (requires Python 2.5 or above)
fix issue124 - make reporting more resilient against tests opening files on filedescriptor 1 (stdout).
fix issue109 - sibling conftest.py files will not be loaded. (and Directory collectors cannot be customized anymore from a Directory's conftest.py - this needs to happen at least one level up).
introduce (customizable) assertion failure representations and enhance output on assertion failures for comparisons and other cases (Floris Bruynooghe)
nose-plugin: pass through type-signature failures in setup/teardown functions instead of not calling them (Ed Singleton)
remove py.test.collect.Directory (follows from a major refactoring and simplification of the collection process)
majorly reduce py.test core code, shift function/python testing to own plugin
fix issue88 (finding custom test nodes from command line arg)
refine 'tmpdir' creation, will now create basenames better associated with test names (thanks Ronny)
"xpass" (unexpected pass) tests don't cause exitcode!=0
fix issue131 / issue60 - importing doctests in __init__ files used as namespace packages
fix issue93 stdout/stderr is captured while importing conftest.py
fix bug: unittest collected functions now also can have "pytestmark" applied at class/module level
add ability to use "class" level for cached_setup helper
fix strangeness: mark.* objects are now immutable, create new instances

1.3.4

fix issue111: improve install documentation for windows
fix issue119: fix custom collectability of __init__.py as a module
fix issue116: --doctestmodules work with __init__.py files as well
fix issue115: unify internal exception passthrough/catching/GeneratorExit
fix issue118: new --tb=native for presenting cpython-standard exceptions

1.3.3

fix issue113: assertion representation problem with triple-quoted strings (and possibly other cases)
make conftest loading detect that a conftest file with the same content was already loaded, avoids surprises in nested directory structures which can be produced e.g. by Hudson. It probably removes the need to use --confcutdir in most cases.
fix terminal coloring for win32 (thanks Michael Foord for reporting)
fix weirdness: make terminal width detection work on stdout instead of stdin (thanks Armin Ronacher for reporting)
remove trailing whitespace in all py/text distribution files

1.3.2

New features

fix issue103: introduce py.test.raises as context manager, examples:

with py.test.raises(ZeroDivisionError):
    x = 0
    1 / x

with py.test.raises(RuntimeError) as excinfo:
    call_something()

# you may do extra checks on excinfo.value|type|traceback here

(thanks Ronny Pfannschmidt)

Funcarg factories can now dynamically apply a marker to a test invocation. This is for example useful if a factory provides parameters to a test which are expected-to-fail:
```
def pytest_funcarg__arg(request):
    request.applymarker(py.test.mark.xfail(reason="flaky config"))
    ...

def test_function(arg):
    ...
```
improved error reporting on collection and import errors. This makes use of a more general mechanism, namely that for custom test item/collect nodes node.repr_failure(excinfo) is now uniformly called so that you can override it to return a string error representation of your choice which is going to be reported as a (red) string.
introduce '--junitprefix=STR' option to prepend a prefix to all reports in the junitxml file.

Bug fixes

make tests and the pytest_recwarn plugin in particular fully compatible to Python2.7 (if you use the recwarn funcarg warnings will be enabled so that you can properly check for their existence in a cross-python manner).
refine --pdb: ignore xfailed tests, unify its TB-reporting and don't display failures again at the end.
fix assertion interpretation with the ** operator (thanks Benjamin Peterson)
fix issue105 assignment on the same line as a failing assertion (thanks Benjamin Peterson)
fix issue104 proper escaping for test names in junitxml plugin (thanks anonymous)
fix issue57 -f|--looponfail to work with xpassing tests (thanks Ronny)
fix issue92 collectonly reporter and --pastebin (thanks Benjamin Peterson)
fix py.code.compile(source) to generate unique filenames
fix assertion re-interp problems on PyPy, by defering code compilation to the (overridable) Frame.eval class. (thanks Amaury Forgeot)
fix py.path.local.pyimport() to work with directories
streamline py.path.local.mkdtemp implementation and usage
don't print empty lines when showing junitxml-filename
add optional boolean ignore_errors parameter to py.path.local.remove
fix terminal writing on win32/python2.4
py.process.cmdexec() now tries harder to return properly encoded unicode objects on all python versions
install plain py.test/py.which scripts also for Jython, this helps to get canonical script paths in virtualenv situations
make path.bestrelpath(path) return ".", note that when calling X.bestrelpath the assumption is that X is a directory.
make initial conftest discovery ignore "--" prefixed arguments
fix resultlog plugin when used in an multicpu/multihost xdist situation (thanks Jakub Gustak)
perform distributed testing related reporting in the xdist-plugin rather than having dist-related code in the generic py.test distribution
fix homedir detection on Windows
ship distribute_setup.py version 0.6.13

1.3.1

New features

issue91: introduce new py.test.xfail(reason) helper to imperatively mark a test as expected to fail. Can be used from within setup and test functions. This is useful especially for parametrized tests when certain configurations are expected-to-fail. In this case the declarative approach with the @py.test.mark.xfail cannot be used as it would mark all configurations as xfail.
issue102: introduce new --maxfail=NUM option to stop test runs after NUM failures. This is a generalization of the '-x' or '--exitfirst' option which is now equivalent to '--maxfail=1'. Both '-x' and '--maxfail' will now also print a line near the end indicating the Interruption.
issue89: allow py.test.mark decorators to be used on classes (class decorators were introduced with python2.6) and also allow to have multiple markers applied at class/module level by specifying a list.
improve and refine letter reporting in the progress bar: . pass f failed test s skipped tests (reminder: use for dependency/platform mismatch only) x xfailed test (test that was expected to fail) X xpassed test (test that was expected to fail but passed)

You can use any combination of 'fsxX' with the '-r' extended reporting option. The xfail/xpass results will show up as skipped tests in the junitxml output - which also fixes issue99.
make py.test.cmdline.main() return the exitstatus instead of raising SystemExit and also allow it to be called multiple times. This of course requires that your application and tests are properly teared down and don't have global state.

Bug Fixes

improved traceback presentation: - improved and unified reporting for "--tb=short" option - Errors during test module imports are much shorter, (using --tb=short style) - raises shows shorter more relevant tracebacks - --fulltrace now more systematically makes traces longer / inhibits cutting
improve support for raises and other dynamically compiled code by manipulating python's linecache.cache instead of the previous rather hacky way of creating custom code objects. This makes it seemlessly work on Jython and PyPy where it previously didn't.
fix issue96: make capturing more resilient against Control-C interruptions (involved somewhat substantial refactoring to the underlying capturing functionality to avoid race conditions).
fix chaining of conditional skipif/xfail decorators - so it works now as expected to use multiple @py.test.mark.skipif(condition) decorators, including specific reporting which of the conditions lead to skipping.
fix issue95: late-import zlib so that it's not required for general py.test startup.
fix issue94: make reporting more robust against bogus source code (and internally be more careful when presenting unexpected byte sequences)

1.3.0

deprecate --report option in favour of a new shorter and easier to remember -r option: it takes a string argument consisting of any combination of 'xfsX' characters. They relate to the single chars you see during the dotted progress printing and will print an extra line per test at the end of the test run. This extra line indicates the exact position or test ID that you directly paste to the py.test cmdline in order to re-run a particular test.
allow external plugins to register new hooks via the new pytest_addhooks(pluginmanager) hook. The new release of the pytest-xdist plugin for distributed and looponfailing testing requires this feature.
add a new pytest_ignore_collect(path, config) hook to allow projects and plugins to define exclusion behaviour for their directory structure - for example you may define in a conftest.py this method:
```
def pytest_ignore_collect(path):
    return path.check(link=1)
```
to prevent even a collection try of any tests in symlinked dirs.
new pytest_pycollect_makemodule(path, parent) hook for allowing customization of the Module collection object for a matching test module.
extend and refine xfail mechanism: @py.test.mark.xfail(run=False) do not run the decorated test @py.test.mark.xfail(reason="...") prints the reason string in xfail summaries specifiying --runxfail on command line virtually ignores xfail markers
expose (previously internal) commonly useful methods: py.io.get_terminal_with() -> return terminal width py.io.ansi_print(...) -> print colored/bold text on linux/win32 py.io.saferepr(obj) -> return limited representation string
expose test outcome related exceptions as py.test.skip.Exception, py.test.raises.Exception etc., useful mostly for plugins doing special outcome interpretation/tweaking
(issue85) fix junitxml plugin to handle tests with non-ascii output
fix/refine python3 compatibility (thanks Benjamin Peterson)
fixes for making the jython/win32 combination work, note however: jython2.5.1/win32 does not provide a command line launcher, see http://bugs.jython.org/issue1491 . See pylib install documentation for how to work around.
fixes for handling of unicode exception values and unprintable objects
(issue87) fix unboundlocal error in assertionold code
(issue86) improve documentation for looponfailing
refine IO capturing: stdin-redirect pseudo-file now has a NOP close() method
ship distribute_setup.py version 0.6.10
added links to the new capturelog and coverage plugins

1.2.0

refined usage and options for "py.cleanup":

py.cleanup     # remove "*.pyc" and "*$py.class" (jython) files
py.cleanup -e .swp -e .cache # also remove files with these extensions
py.cleanup -s  # remove "build" and "dist" directory next to setup.py files
py.cleanup -d  # also remove empty directories
py.cleanup -a  # synonym for "-s -d -e 'pip-log.txt'"
py.cleanup -n  # dry run, only show what would be removed

add a new option "py.test --funcargs" which shows available funcargs and their help strings (docstrings on their respective factory function) for a given test path
display a short and concise traceback if a funcarg lookup fails
early-load "conftest.py" files in non-dot first-level sub directories. allows to conveniently keep and access test-related options in a test subdir and still add command line options.
fix issue67: new super-short traceback-printing option: "--tb=line" will print a single line for each failing (python) test indicating its filename, lineno and the failure value
fix issue78: always call python-level teardown functions even if the according setup failed. This includes refinements for calling setup_module/class functions which will now only be called once instead of the previous behaviour where they'd be called multiple times if they raise an exception (including a Skipped exception). Any exception will be re-corded and associated with all tests in the according module/class scope.
fix issue63: assume <40 columns to be a bogus terminal width, default to 80
fix pdb debugging to be in the correct frame on raises-related errors
update apipkg.py to fix an issue where recursive imports might unnecessarily break importing
fix plugin links

1.1.1

moved dist/looponfailing from py.test core into a new separately released pytest-xdist plugin.
new junitxml plugin: --junitxml=path will generate a junit style xml file which is processable e.g. by the Hudson CI system.
new option: --genscript=path will generate a standalone py.test script which will not need any libraries installed. thanks to Ralf Schmitt.
new option: --ignore will prevent specified path from collection. Can be specified multiple times.
new option: --confcutdir=dir will make py.test only consider conftest files that are relative to the specified dir.
new funcarg: "pytestconfig" is the pytest config object for access to command line args and can now be easily used in a test.
install py.test and py.which with a -$VERSION suffix to disambiguate between Python3, python2.X, Jython and PyPy installed versions.
new "pytestconfig" funcarg allows access to test config object
new "pytest_report_header" hook can return additional lines to be displayed at the header of a test run.
(experimental) allow "py.test path::name1::name2::..." for pointing to a test within a test collection directly. This might eventually evolve as a full substitute to "-k" specifications.
streamlined plugin loading: order is now as documented in customize.html: setuptools, ENV, commandline, conftest. also setuptools entry point names are turned to canonical namees ("pytest_*")
automatically skip tests that need 'capfd' but have no os.dup
allow pytest_generate_tests to be defined in classes as well
deprecate usage of 'disabled' attribute in favour of pytestmark
deprecate definition of Directory, Module, Class and Function nodes in conftest.py files. Use pytest collect hooks instead.
collection/item node specific runtest/collect hooks are only called exactly on matching conftest.py files, i.e. ones which are exactly below the filesystem path of an item
change: the first pytest_collect_directory hook to return something will now prevent further hooks to be called.
change: figleaf plugin now requires --figleaf to run. Also change its long command line options to be a bit shorter (see py.test -h).
change: pytest doctest plugin is now enabled by default and has a new option --doctest-glob to set a pattern for file matches.
change: remove internal py._* helper vars, only keep py._pydir
robustify capturing to survive if custom pytest_runtest_setup code failed and prevented the capturing setup code from running.
make py.test.* helpers provided by default plugins visible early - works transparently both for pydoc and for interactive sessions which will regularly see e.g. py.test.mark and py.test.importorskip.
simplify internal plugin manager machinery
simplify internal collection tree by introducing a RootCollector node
fix assert reinterpreation that sees a call containing "keyword=..."
fix issue66: invoke pytest_sessionstart and pytest_sessionfinish hooks on slaves during dist-testing, report module/session teardown hooks correctly.
fix issue65: properly handle dist-testing if no execnet/py lib installed remotely.
skip some install-tests if no execnet is available
fix docs, fix internal bin/ script generation

1.1.0

introduce automatic plugin registration via 'pytest11' entrypoints via setuptools' pkg_resources.iter_entry_points
fix py.test dist-testing to work with execnet >= 1.0.0b4
re-introduce py.test.cmdline.main() for better backward compatibility
svn paths: fix a bug with path.check(versioned=True) for svn paths, allow '%' in svn paths, make svnwc.update() default to interactive mode like in 1.0.x and add svnwc.update(interactive=False) to inhibit interaction.
refine distributed tarball to contain test and no pyc files
try harder to have deprecation warnings for py.compat.* accesses report a correct location

1.0.3

adjust and improve docs
remove py.rest tool and internal namespace - it was never really advertised and can still be used with the old release if needed. If there is interest it could be revived into its own tool i guess.
fix issue48 and issue59: raise an Error if the module from an imported test file does not seem to come from the filepath - avoids "same-name" confusion that has been reported repeatedly
merged Ronny's nose-compatibility hacks: now nose-style setup_module() and setup() functions are supported
introduce generalized py.test.mark function marking
reshuffle / refine command line grouping
deprecate parser.addgroup in favour of getgroup which creates option group
add --report command line option that allows to control showing of skipped/xfailed sections
generalized skipping: a new way to mark python functions with skipif or xfail at function, class and modules level based on platform or sys-module attributes.
extend py.test.mark decorator to allow for positional args
introduce and test "py.cleanup -d" to remove empty directories
fix issue #59 - robustify unittest test collection
make bpython/help interaction work by adding an __all__ attribute to ApiModule, cleanup initpkg
use MIT license for pylib, add some contributors
remove py.execnet code and substitute all usages with 'execnet' proper
fix issue50 - cached_setup now caches more to expectations for test functions with multiple arguments.
merge Jarko's fixes, issue #45 and #46
add the ability to specify a path for py.lookup to search in
fix a funcarg cached_setup bug probably only occuring in distributed testing and "module" scope with teardown.
many fixes and changes for making the code base python3 compatible, many thanks to Benjamin Peterson for helping with this.
consolidate builtins implementation to be compatible with >=2.3, add helpers to ease keeping 2 and 3k compatible code
deprecate py.compat.doctest|subprocess|textwrap|optparse
deprecate py.magic.autopath, remove py/magic directory
move pytest assertion handling to py/code and a pytest_assertion plugin, add "--no-assert" option, deprecate py.magic namespaces in favour of (less) py.code ones.
consolidate and cleanup py/code classes and files
cleanup py/misc, move tests to bin-for-dist
introduce delattr/delitem/delenv methods to py.test's monkeypatch funcarg
consolidate py.log implementation, remove old approach.
introduce py.io.TextIO and py.io.BytesIO for distinguishing between text/unicode and byte-streams (uses underlying standard lib io.* if available)
make py.unittest_convert helper script available which converts "unittest.py" style files into the simpler assert/direct-test-classes py.test/nosetests style. The script was written by Laura Creighton.
simplified internal localpath implementation

1.0.2

fixing packaging issues, triggered by fedora redhat packaging, also added doc, examples and contrib dirs to the tarball.
added a documentation link to the new django plugin.

1.0.1

added a 'pytest_nose' plugin which handles nose.SkipTest, nose-style function/method/generator setup/teardown and tries to report functions correctly.
capturing of unicode writes or encoded strings to sys.stdout/err work better, also terminalwriting was adapted and somewhat unified between windows and linux.
improved documentation layout and content a lot
added a "--help-config" option to show conftest.py / ENV-var names for all longopt cmdline options, and some special conftest.py variables. renamed 'conf_capture' conftest setting to 'option_capture' accordingly.
fix issue #27: better reporting on non-collectable items given on commandline (e.g. pyc files)
fix issue #33: added --version flag (thanks Benjamin Peterson)
fix issue #32: adding support for "incomplete" paths to wcpath.status()
"Test" prefixed classes are not collected by default anymore if they have an __init__ method
monkeypatch setenv() now accepts a "prepend" parameter
improved reporting of collection error tracebacks
simplified multicall mechanism and plugin architecture, renamed some internal methods and argnames

1.0.0

more terse reporting try to show filesystem path relatively to current dir
improve xfail output a bit

1.0.0b9

cleanly handle and report final teardown of test setup
fix svn-1.6 compat issue with py.path.svnwc().versioned() (thanks Wouter Vanden Hove)
setup/teardown or collection problems now show as ERRORs or with big "E"'s in the progress lines. they are reported and counted separately.
dist-testing: properly handle test items that get locally collected but cannot be collected on the remote side - often due to platform/dependency reasons
simplified py.test.mark API - see keyword plugin documentation
integrate better with logging: capturing now by default captures test functions and their immediate setup/teardown in a single stream
capsys and capfd funcargs now have a readouterr() and a close() method (underlyingly py.io.StdCapture/FD objects are used which grew a readouterr() method as well to return snapshots of captured out/err)
make assert-reinterpretation work better with comparisons not returning bools (reported with numpy from thanks maciej fijalkowski)
reworked per-test output capturing into the pytest_iocapture.py plugin and thus removed capturing code from config object
item.repr_failure(excinfo) instead of item.repr_failure(excinfo, outerr)

1.0.0b8

pytest_unittest-plugin is now enabled by default
introduced pytest_keyboardinterrupt hook and refined pytest_sessionfinish hooked, added tests.
workaround a buggy logging module interaction ("closing already closed files"). Thanks to Sridhar Ratnakumar for triggering.
if plugins use "py.test.importorskip" for importing a dependency only a warning will be issued instead of exiting the testing process.
many improvements to docs: - refined funcargs doc , use the term "factory" instead of "provider" - added a new talk/tutorial doc page - better download page - better plugin docstrings - added new plugins page and automatic doc generation script
fixed teardown problem related to partially failing funcarg setups (thanks MrTopf for reporting), "pytest_runtest_teardown" is now always invoked even if the "pytest_runtest_setup" failed.
tweaked doctest output for docstrings in py modules, thanks Radomir.

1.0.0b7

renamed py.test.xfail back to py.test.mark.xfail to avoid two ways to decorate for xfail
re-added py.test.mark decorator for setting keywords on functions (it was actually documented so removing it was not nice)
remove scope-argument from request.addfinalizer() because request.cached_setup has the scope arg. TOOWTDI.
perform setup finalization before reporting failures
apply modified patches from Andreas Kloeckner to allow test functions to have no func_code (#22) and to make "-k" and function keywords work (#20)
apply patch from Daniel Peolzleithner (issue #23)
resolve issue #18, multiprocessing.Manager() and redirection clash
make __name__ == "__channelexec__" for remote_exec code

1.0.0b3

plugin classes are removed: one now defines hooks directly in conftest.py or global pytest_*.py files.
added new pytest_namespace(config) hook that allows to inject helpers directly to the py.test.* namespace.
documented and refined many hooks
added new style of generative tests via pytest_generate_tests hook that integrates well with function arguments.

1.0.0b1

introduced new "funcarg" setup method, see doc/test/funcarg.txt
introduced plugin architecture and many new py.test plugins, see doc/test/plugins.txt
teardown_method is now guaranteed to get called after a test method has run.
new method: py.test.importorskip(mod,minversion) will either import or call py.test.skip()
completely revised internal py.test architecture
new py.process.ForkedFunc object allowing to fork execution of a function to a sub process and getting a result back.

XXX lots of things missing here XXX

0.9.2

refined installation and metadata, created new setup.py, now based on setuptools/ez_setup (thanks to Ralf Schmitt for his support).
improved the way of making py.* scripts available in windows environments, they are now added to the Scripts directory as ".cmd" files.
py.path.svnwc.status() now is more complete and uses xml output from the 'svn' command if available (Guido Wesdorp)
fix for py.path.svn* to work with svn 1.5 (Chris Lamb)
fix path.relto(otherpath) method on windows to use normcase for checking if a path is relative.
py.test's traceback is better parseable from editors (follows the filenames:LINENO: MSG convention) (thanks to Osmo Salomaa)
fix to javascript-generation, "py.test --runbrowser" should work more reliably now
removed previously accidentally added py.test.broken and py.test.notimplemented helpers.
there now is a py.__version__ attribute

0.9.1

This is a fairly complete list of v0.9.1, which can serve as a reference for developers.

allowing + signs in py.path.svn urls [39106]
fixed support for Failed exceptions without excinfo in py.test [39340]
added support for killing processes for Windows (as well as platforms that support os.kill) in py.misc.killproc [39655]
added setup/teardown for generative tests to py.test [40702]
added detection of FAILED TO LOAD MODULE to py.test [40703, 40738, 40739]
fixed problem with calling .remove() on wcpaths of non-versioned files in py.path [44248]
fixed some import and inheritance issues in py.test [41480, 44648, 44655]
fail to run greenlet tests when pypy is available, but without stackless [45294]
small fixes in rsession tests [45295]
fixed issue with 2.5 type representations in py.test [45483, 45484]
made that internal reporting issues displaying is done atomically in py.test [45518]
made that non-existing files are igored by the py.lookup script [45519]
improved exception name creation in py.test [45535]
made that less threads are used in execnet [merge in 45539]
removed lock required for atomical reporting issue displaying in py.test [45545]
removed globals from execnet [45541, 45547]
refactored cleanup mechanics, made that setDaemon is set to 1 to make atexit get called in 2.5 (py.execnet) [45548]
fixed bug in joining threads in py.execnet's servemain [45549]
refactored py.test.rsession tests to not rely on exact output format anymore [45646]
using repr() on test outcome [45647]
added 'Reason' classes for py.test.skip() [45648, 45649]
killed some unnecessary sanity check in py.test.collect [45655]
avoid using os.tmpfile() in py.io.fdcapture because on Windows it's only usable by Administrators [45901]
added support for locking and non-recursive commits to py.path.svnwc [45994]
locking files in py.execnet to prevent CPython from segfaulting [46010]
added export() method to py.path.svnurl
fixed -d -x in py.test [47277]
fixed argument concatenation problem in py.path.svnwc [49423]
restore py.test behaviour that it exits with code 1 when there are failures [49974]
don't fail on html files that don't have an accompanying .txt file [50606]
fixed 'utestconvert.py < input' [50645]
small fix for code indentation in py.code.source [50755]
fix _docgen.py documentation building [51285]
improved checks for source representation of code blocks in py.test [51292]
added support for passing authentication to py.path.svn* objects [52000, 52001]
removed sorted() call for py.apigen tests in favour of [].sort() to support Python 2.3 [52481]

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