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========
Fixtures
========
event_loop_policy
=================
Returns the event loop policy used to create asyncio event loops.
The default return value is *asyncio.get_event_loop_policy().*
This fixture can be overridden when a different event loop policy should be used.
.. include:: event_loop_policy_example.py
:code: python
Multiple policies can be provided via fixture parameters.
The fixture is automatically applied to all pytest-asyncio tests.
Therefore, all tests managed by pytest-asyncio are run once for each fixture parameter.
The following example runs the test with different event loop policies.
.. include:: event_loop_policy_parametrized_example.py
:code: python
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()
unused_udp_port and unused_udp_port_factory
===========================================
Works just like their TCP counterparts but returns unused UDP ports.
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