130 lines
5.0 KiB
ReStructuredText
130 lines
5.0 KiB
ReStructuredText
py.test 2.0.0: asserts++, unittest++, reporting++, config++, docs++
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===========================================================================
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Welcome to pytest-2.0.0, a major new release of "py.test", the rapid
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easy Python testing tool. There are many new features and enhancements,
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see below for summary and detailed lists. A lot of long-deprecated code
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has been removed, resulting in a much smaller and cleaner
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implementation. See the new docs with examples here:
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http://pytest.org/2.0.0/index.html
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A note on packaging: pytest used to part of the "py" distribution up
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until version py-1.3.4 but this has changed now: pytest-2.0.0 only
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contains py.test related code and is expected to be backward-compatible
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to existing test code. If you want to install pytest, just type one of::
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pip install -U pytest
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easy_install -U pytest
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Many thanks to all issue reporters and people asking questions or
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complaining. Particular thanks to Floris Bruynooghe and Ronny Pfannschmidt
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for their great coding contributions and many others for feedback and help.
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best,
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holger krekel
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New Features
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-----------------------
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- new invocations through Python interpreter and from Python::
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python -m pytest # on all pythons >= 2.5
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or from a python program::
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import pytest ; pytest.main(arglist, pluginlist)
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see http://pytest.org/2.0.0/usage.html for details.
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- new and better reporting information in assert expressions
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if comparing lists, sequences or strings.
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see http://pytest.org/2.0.0/assert.html#newreport
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- new configuration through ini-files (setup.cfg or tox.ini recognized),
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for example::
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[pytest]
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norecursedirs = .hg data* # don't ever recurse in such dirs
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addopts = -x --pyargs # add these command line options by default
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see http://pytest.org/2.0.0/customize.html
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- improved standard unittest support. In general py.test should now
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better be able to run custom unittest.TestCases like twisted trial
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or Django based TestCases. Also you can now run the tests of an
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installed 'unittest' package with py.test::
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py.test --pyargs unittest
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- new "-q" option which decreases verbosity and prints a more
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nose/unittest-style "dot" output.
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- many many more detailed improvements details
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Fixes
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-----------------------
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- fix issue126 - introduce py.test.set_trace() to trace execution via
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PDB during the running of tests even if capturing is ongoing.
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- fix issue124 - make reporting more resilient against tests opening
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files on filedescriptor 1 (stdout).
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- fix issue109 - sibling conftest.py files will not be loaded.
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(and Directory collectors cannot be customized anymore from a Directory's
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conftest.py - this needs to happen at least one level up).
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- fix issue88 (finding custom test nodes from command line arg)
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- fix issue93 stdout/stderr is captured while importing conftest.py
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- fix bug: unittest collected functions now also can have "pytestmark"
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applied at class/module level
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Important Notes
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--------------------
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* The usual way in pre-2.0 times to use py.test in python code was
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to import "py" and then e.g. use "py.test.raises" for the helper.
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This remains valid and is not planned to be deprecated. However,
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in most examples and internal code you'll find "import pytest"
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and "pytest.raises" used as the recommended default way.
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* pytest now first performs collection of the complete test suite
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before running any test. This changes for example the semantics of when
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pytest_collectstart/pytest_collectreport are called. Some plugins may
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need upgrading.
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* The pytest package consists of a 400 LOC core.py and about 20 builtin plugins,
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summing up to roughly 5000 LOCs, including docstrings. To be fair, it also
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uses generic code from the "pylib", and the new "py" package to help
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with filesystem and introspection/code manipulation.
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(Incompatible) Removals
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-----------------------------
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- py.test.config is now only available if you are in a test run.
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- the following (mostly already deprecated) functionality was removed:
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- removed support for Module/Class/... collection node definitions
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in conftest.py files. They will cause nothing special.
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- removed support for calling the pre-1.0 collection API of "run()" and "join"
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- removed reading option values from conftest.py files or env variables.
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This can now be done much much better and easier through the ini-file
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mechanism and the "addopts" entry in particular.
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- removed the "disabled" attribute in test classes. Use the skipping
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and pytestmark mechanism to skip or xfail a test class.
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- py.test.collect.Directory does not exist anymore and it
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is not possible to provide an own "Directory" object.
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If you have used this and don't know what to do, get
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in contact. We'll figure something out.
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Note that pytest_collect_directory() is still called but
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any return value will be ignored. This allows to keep
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old code working that performed for example "py.test.skip()"
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in collect() to prevent recursion into directory trees
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if a certain dependency or command line option is missing.
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see :ref:`changelog` for more detailed changes.
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