Metadata-Version: 2.1
Name: pytest-asyncio
Version: 0.14.0
Summary: Pytest support for asyncio.
Home-page: https://github.com/pytest-dev/pytest-asyncio
Author: Tin Tvrtković
Author-email: tinchester@gmail.com
License: Apache 2.0
Description: pytest-asyncio: pytest support for asyncio
        ==========================================
        
        .. image:: https://img.shields.io/pypi/v/pytest-asyncio.svg
            :target: https://pypi.python.org/pypi/pytest-asyncio
        .. image:: https://travis-ci.org/pytest-dev/pytest-asyncio.svg?branch=master
            :target: https://travis-ci.org/pytest-dev/pytest-asyncio
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            :target: https://coveralls.io/r/pytest-dev/pytest-asyncio
        .. image:: https://img.shields.io/pypi/pyversions/pytest-asyncio.svg
            :target: https://github.com/pytest-dev/pytest-asyncio
            :alt: Supported Python versions
        
        pytest-asyncio is an Apache2 licensed library, written in Python, for testing
        asyncio code with pytest.
        
        asyncio code is usually written in the form of coroutines, which makes it
        slightly more difficult to test using normal testing tools. pytest-asyncio
        provides useful fixtures and markers to make testing easier.
        
        .. code-block:: python
        
            @pytest.mark.asyncio
            async def test_some_asyncio_code():
                res = await library.do_something()
                assert b'expected result' == res
        
        pytest-asyncio has been strongly influenced by pytest-tornado_.
        
        .. _pytest-tornado: https://github.com/eugeniy/pytest-tornado
        
        Features
        --------
        
        - fixtures for creating and injecting versions of the asyncio event loop
        - fixtures for injecting unused tcp ports
        - pytest markers for treating tests as asyncio coroutines
        - easy testing with non-default event loops
        - support for `async def` fixtures and async generator fixtures
        
        Installation
        ------------
        
        To install pytest-asyncio, simply:
        
        .. code-block:: bash
        
            $ pip install pytest-asyncio
        
        This is enough for pytest to pick up pytest-asyncio.
        
        Fixtures
        --------
        
        ``event_loop``
        ~~~~~~~~~~~~~~
        Creates and injects a new instance of the default asyncio event loop. By
        default, the loop will be closed at the end of the test (i.e. the default
        fixture scope is ``function``).
        
        Note that just using the ``event_loop`` fixture won't make your test function
        a coroutine. You'll need to interact with the event loop directly, using methods
        like ``event_loop.run_until_complete``. See the ``pytest.mark.asyncio`` marker
        for treating test functions like coroutines.
        
        Simply using this fixture will not set the generated event loop as the
        default asyncio event loop, or change the asyncio event loop policy in any way.
        Use ``pytest.mark.asyncio`` for this purpose.
        
        .. code-block:: python
        
            def test_http_client(event_loop):
                url = 'http://httpbin.org/get'
                resp = event_loop.run_until_complete(http_client(url))
                assert b'HTTP/1.1 200 OK' in resp
        
        This fixture can be easily overridden in any of the standard pytest locations
        (e.g. directly in the test file, or in ``conftest.py``) to use a non-default
        event loop. This will take effect even if you're using the
        ``pytest.mark.asyncio`` marker and not the ``event_loop`` fixture directly.
        
        .. code-block:: python
        
            @pytest.fixture
            def event_loop():
                loop = MyCustomLoop()
                yield loop
                loop.close()
        
        If the ``pytest.mark.asyncio`` marker is applied, a pytest hook will
        ensure the produced loop is set as the default global loop.
        Fixtures depending on the ``event_loop`` fixture can expect the policy to be properly modified when they run.
        
        ``unused_tcp_port``
        ~~~~~~~~~~~~~~~~~~~
        Finds and yields a single unused TCP port on the localhost interface. Useful for
        binding temporary test servers.
        
        ``unused_tcp_port_factory``
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~
        A callable which returns a different unused TCP port each invocation. Useful
        when several unused TCP ports are required in a test.
        
        .. code-block:: python
        
            def a_test(unused_tcp_port_factory):
                port1, port2 = unused_tcp_port_factory(), unused_tcp_port_factory()
                ...
        
        Async fixtures
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        Asynchronous fixtures are defined just like ordinary pytest fixtures, except they should be coroutines or asynchronous generators.
        
        .. code-block:: python3
        
            @pytest.fixture
            async def async_gen_fixture():
                await asyncio.sleep(0.1)
                yield 'a value'
        
            @pytest.fixture(scope='module')
            async def async_fixture():
                return await asyncio.sleep(0.1)
        
        All scopes are supported, but if you use a non-function scope you will need
        to redefine the ``event_loop`` fixture to have the same or broader scope.
        Async fixtures need the event loop, and so must have the same or narrower scope
        than the ``event_loop`` fixture.
        
        If you want to do this with Python 3.5, the ``yield`` statement must be replaced with ``await yield_()`` and the coroutine
        function must be decorated with ``@async_generator``, like so:
        
        .. code-block:: python3
        
            from async_generator import yield_, async_generator
        
            @pytest.fixture
            @async_generator
            async def async_gen_fixture():
                await asyncio.sleep(0.1)
                await yield_('a value')
        
        
        Markers
        -------
        
        ``pytest.mark.asyncio``
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        Mark your test coroutine with this marker and pytest will execute it as an
        asyncio task using the event loop provided by the ``event_loop`` fixture. See
        the introductory section for an example.
        
        The event loop used can be overriden by overriding the ``event_loop`` fixture
        (see above).
        
        In order to make your test code a little more concise, the pytest |pytestmark|_
        feature can be used to mark entire modules or classes with this marker.
        Only test coroutines will be affected (by default, coroutines prefixed by
        ``test_``), so, for example, fixtures are safe to define.
        
        .. code-block:: python
        
            import asyncio
            import pytest
        
            # All test coroutines will be treated as marked.
            pytestmark = pytest.mark.asyncio
        
            async def test_example(event_loop):
                """No marker!"""
                await asyncio.sleep(0, loop=event_loop)
        
        .. |pytestmark| replace:: ``pytestmark``
        .. _pytestmark: http://doc.pytest.org/en/latest/example/markers.html#marking-whole-classes-or-modules
        
        Changelog
        ---------
        0.13.0 (2020-06-24)
        ~~~~~~~~~~~~~~~~~~~
        - Fix `#162 <https://github.com/pytest-dev/pytest-asyncio/issues/162>`_, and ``event_loop`` fixture behavior now is coherent on all scopes.
          `#164 <https://github.com/pytest-dev/pytest-asyncio/pull/164>`_
        
        0.12.0 (2020-05-04)
        ~~~~~~~~~~~~~~~~~~~
        - Run the event loop fixture as soon as possible. This helps with fixtures that have an implicit dependency on the event loop.
          `#156 <https://github.com/pytest-dev/pytest-asyncio/pull/156>`_
        
        0.11.0 (2020-04-20)
        ~~~~~~~~~~~~~~~~~~~
        - Test on 3.8, drop 3.3 and 3.4. Stick to 0.10 for these versions.
          `#152 <https://github.com/pytest-dev/pytest-asyncio/pull/152>`_
        - Use the new Pytest 5.4.0 Function API. We therefore depend on pytest >= 5.4.0.
          `#142 <https://github.com/pytest-dev/pytest-asyncio/pull/142>`_
        - Better ``pytest.skip`` support.
          `#126 <https://github.com/pytest-dev/pytest-asyncio/pull/126>`_
        
        0.10.0 (2019-01-08)
        ~~~~~~~~~~~~~~~~~~~~
        - ``pytest-asyncio`` integrates with `Hypothesis <https://hypothesis.readthedocs.io>`_
          to support ``@given`` on async test functions using ``asyncio``.
          `#102 <https://github.com/pytest-dev/pytest-asyncio/pull/102>`_
        - Pytest 4.1 support.
          `#105 <https://github.com/pytest-dev/pytest-asyncio/pull/105>`_
        
        0.9.0 (2018-07-28)
        ~~~~~~~~~~~~~~~~~~
        - Python 3.7 support.
        - Remove ``event_loop_process_pool`` fixture and
          ``pytest.mark.asyncio_process_pool`` marker (see
          https://bugs.python.org/issue34075 for deprecation and removal details)
        
        0.8.0 (2017-09-23)
        ~~~~~~~~~~~~~~~~~~
        - Improve integration with other packages (like aiohttp) with more careful event loop handling.
          `#64 <https://github.com/pytest-dev/pytest-asyncio/pull/64>`_
        
        0.7.0 (2017-09-08)
        ~~~~~~~~~~~~~~~~~~
        - Python versions pre-3.6 can use the async_generator library for async fixtures.
          `#62 <https://github.com/pytest-dev/pytest-asyncio/pull/62>`
        
        
        0.6.0 (2017-05-28)
        ~~~~~~~~~~~~~~~~~~
        - Support for Python versions pre-3.5 has been dropped.
        - ``pytestmark`` now works on both module and class level.
        - The ``forbid_global_loop`` parameter has been removed.
        - Support for async and async gen fixtures has been added.
          `#45 <https://github.com/pytest-dev/pytest-asyncio/pull/45>`_
        - The deprecation warning regarding ``asyncio.async()`` has been fixed.
          `#51 <https://github.com/pytest-dev/pytest-asyncio/pull/51>`_
        
        0.5.0 (2016-09-07)
        ~~~~~~~~~~~~~~~~~~
        - Introduced a changelog.
          `#31 <https://github.com/pytest-dev/pytest-asyncio/issues/31>`_
        - The ``event_loop`` fixture is again responsible for closing itself.
          This makes the fixture slightly harder to correctly override, but enables
          other fixtures to depend on it correctly.
          `#30 <https://github.com/pytest-dev/pytest-asyncio/issues/30>`_
        - Deal with the event loop policy by wrapping a special pytest hook,
          ``pytest_fixture_setup``. This allows setting the policy before fixtures
          dependent on the ``event_loop`` fixture run, thus allowing them to take
          advantage of the ``forbid_global_loop`` parameter. As a consequence of this,
          we now depend on pytest 3.0.
          `#29 <https://github.com/pytest-dev/pytest-asyncio/issues/29>`_
        
        
        0.4.1 (2016-06-01)
        ~~~~~~~~~~~~~~~~~~
        - Fix a bug preventing the propagation of exceptions from the plugin.
          `#25 <https://github.com/pytest-dev/pytest-asyncio/issues/25>`_
        
        0.4.0 (2016-05-30)
        ~~~~~~~~~~~~~~~~~~
        - Make ``event_loop`` fixtures simpler to override by closing them in the
          plugin, instead of directly in the fixture.
          `#21 <https://github.com/pytest-dev/pytest-asyncio/pull/21>`_
        - Introduce the ``forbid_global_loop`` parameter.
          `#21 <https://github.com/pytest-dev/pytest-asyncio/pull/21>`_
        
        0.3.0 (2015-12-19)
        ~~~~~~~~~~~~~~~~~~
        - Support for Python 3.5 ``async``/``await`` syntax.
          `#17 <https://github.com/pytest-dev/pytest-asyncio/pull/17>`_
        
        0.2.0 (2015-08-01)
        ~~~~~~~~~~~~~~~~~~
        - ``unused_tcp_port_factory`` fixture.
          `#10 <https://github.com/pytest-dev/pytest-asyncio/issues/10>`_
        
        
        0.1.1 (2015-04-23)
        ~~~~~~~~~~~~~~~~~~
        Initial release.
        
        
        Contributing
        ------------
        Contributions are very welcome. Tests can be run with ``tox``, please ensure
        the coverage at least stays the same before you submit a pull request.
        
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Topic :: Software Development :: Testing
Classifier: Framework :: Pytest
Requires-Python: >= 3.5
Provides-Extra: testing