Package: pytest-runner
Setup scripts can use pytest-runner to add setup.py test support for pytest
runner.Deprecation Noticepytest-runner depends on deprecated features of setuptools and relies on features that break security
mechanisms in pip. For example ‘setup_requires’ and ‘tests_require’ bypasspip--require-hashes.
See alsopypa/setuptools#1684.It is recommended that you:Remove'pytest-runner'from yoursetup_requires, preferably removing thesetup_requiresoption.Remove'pytest'and any other testing requirements fromtests_require, preferably removing thetests_requiresoption.Select a tool to bootstrap and then run tests such as tox.UsageAdd ‘pytest-runner’ to your ‘setup_requires’. Pin to ‘>=2.0,<3dev’ (or
similar) to avoid pulling in incompatible versions.Include ‘pytest’ and any other testing requirements to ‘tests_require’.Invoke tests withsetup.py pytest.Pass--index-urlto have test requirements downloaded from an alternate
index URL (unnecessary if specified for easy_install in setup.cfg).Pass additional py.test command-line options using--addopts.Set permanent options for thepython setup.py pytestcommand (likeindex-url)
in the[pytest]section ofsetup.cfg.Set permanent options for thepy.testrun (likeaddoptsorpep8ignore) in the[pytest]section ofpytest.iniortox.inior put them in the[tool:pytest]section ofsetup.cfg. Seepytest issue 567.Optionally, settest=pytestin the[aliases]section ofsetup.cfgto causepython setup.py testto invoke pytest.ExampleThe most simple usage looks like this in setup.py:setup(
    setup_requires=[
        'pytest-runner',
    ],
    tests_require=[
        'pytest',
    ],
)Additional dependencies require to run the tests (e.g. mock or pytest
plugins) may be added to tests_require and will be downloaded and
required by the session before invoking pytest.Followthis search on githubfor examples of real-world usage.Standalone ExampleThis technique is deprecated - if you have standalone scripts
you wish to invoke with dependencies,use pip-run.Althoughpytest-runneris typically used to add pytest test
runner support to maintained packages,pytest-runnermay
also be used to create standalone tests. Considerthis example
failure,
reported injsonpickle #117orthis MongoDB testdemonstrating a technique that works even when dependencies
are required in the test.Either example file may be cloned or downloaded and simply run on
any system with Python and Setuptools. It will download the
specified dependencies and run the tests. Afterward, the the
cloned directory can be removed and with it all trace of
invoking the test. No other dependencies are needed and no
system configuration is altered.Then, anyone trying to replicate the failure can do so easily
and with all the power of pytest (rewritten assertions,
rich comparisons, interactive debugging, extensibility through
plugins, etc).As a result, the communication barrier for describing and
replicating failures is made almost trivially low.ConsiderationsConditional RequirementBecause it uses Setuptools setup_requires, pytest-runner will install itself
on every invocation of setup.py. In some cases, this causes delays for
invocations of setup.py that will never invoke pytest-runner. To help avoid
this contingency, consider requiring pytest-runner only when pytest
is invoked:needs_pytest = {'pytest', 'test', 'ptr'}.intersection(sys.argv)
pytest_runner = ['pytest-runner'] if needs_pytest else []

# ...

setup(
    #...
    setup_requires=[
        #... (other setup requirements)
    ] + pytest_runner,
)For EnterpriseAvailable as part of the Tidelift Subscription.This project and the maintainers of thousands of other packages are working with Tidelift to deliver one enterprise subscription that covers all of the open source you use.Learn more.Security ContactTo report a security vulnerability, please use theTidelift security contact.
Tidelift will coordinate the fix and disclosure.