v1.2.0: pytest-asyncio 1.2.0

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1.2.0 - 2025-09-12

Added

• --asyncio-debug CLI option and asyncio_debug configuration option to enable asyncio debug mode for the default event loop. (#​980)
• A pytest.UsageError for invalid configuration values of asyncio_default_fixture_loop_scope and asyncio_default_test_loop_scope. (#​1189)
• Compatibility with the Pyright type checker (#​731)

Fixed

• RuntimeError: There is no current event loop in thread 'MainThread' when any test unsets the event loop (such as when using asyncio.run and asyncio.Runner). (#​1177)
• Deprecation warning when decorating an asynchronous fixture with @pytest.fixture in [strict]{.title-ref} mode. The warning message now refers to the correct package. (#​1198)

Notes for Downstream Packagers

• Bump the minimum required version of tox to v4.28. This change is only relevant if you use the tox.ini file provided by pytest-asyncio to run tests.
• Extend dependency on typing-extensions>=4.12 from Python<3.10 to Python<3.13.

v1.1.1: pytest-asyncio 1.1.1

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v1.1.1 - 2025-09-12

Notes for Downstream Packagers

- Addresses a build problem with setuptoos-scm >= 9 caused by invalid setuptools-scm configuration in pytest-asyncio. (#​1192)

v1.1.0: pytest-asyncio 1.1.0

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Added

• Propagation of ContextVars from async fixtures to other fixtures and tests on Python 3.10 and older (#​127)
• Cancellation of tasks when the loop_scope ends (#​200)
• Warning when the current event loop is closed by a test

Fixed

• Error about missing loop when calling functions requiring a loop in the finally clause of a task (#​878)
• An error that could cause duplicate warnings to be issued

Notes for Downstream Packagers

• Added runtime dependency on backports.asyncio.runner for use with Python 3.10 and older

v1.0.0: pytest-asyncio 1.0.0

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1.0.0 - 2025-05-26

Removed

• The deprecated event_loop fixture.
  (#​1106)

Added

• Prelimiary support for Python 3.14
  (#​1025)

Changed

• Scoped event loops (e.g. module-scoped loops) are created once rather
  than per scope (e.g. per module). This reduces the number of fixtures
  and speeds up collection time, especially for large test suites.
  (#​1107)
• The loop_scope argument to pytest.mark.asyncio no longer forces
  that a pytest Collector exists at the level of the specified scope.
  For example, a test function marked with
  pytest.mark.asyncio(loop_scope="class") no longer requires a class
  surrounding the test. This is consistent with the behavior of the
  scope argument to pytest_asyncio.fixture.
  (#​1112)

Fixed

• An error caused when using pytest's [--setup-plan]{.title-ref}
  option.
  (#​630)
• Unsuppressed import errors with pytest option
  --doctest-ignore-import-errors
  (#​797)
• A "fixture not found" error in connection with package-scoped loops
  (#​1052)

Notes for Downstream Packagers

• Removed a test that had an ordering dependency on other tests.
  (#​1114)

v0.26.0: pytest-asyncio 0.26.0

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• Adds configuration option that sets default event loop scope for all tests #​793
• Improved type annotations for pytest_asyncio.fixture #​1045
• Added typing-extensions as additional dependency for Python <3.10 #​1045

v0.25.3: pytest-asyncio 0.25.3

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• Avoid errors in cleanup of async generators when event loop is already closed #​1040

v0.25.2: pytest-asyncio 0.25.2

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• Call loop.shutdown_asyncgens() before closing the event loop to ensure async generators are closed in the same manner as asyncio.run does #​1034

v0.25.1: pytest-asyncio 0.25.1

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• Fixes an issue that caused a broken event loop when a function-scoped test was executed in between two tests with wider loop scope #​950
• Improves test collection speed in auto mode #​1020
• Corrects the warning that is emitted upon redefining the event_loop fixture

v0.25.0: pytest-asyncio 0.25.0

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0.25.0 (2024-12-13)

• Deprecated: Added warning when asyncio test requests async @pytest.fixture in strict mode. This will become an error in a future version of flake8-asyncio. #​979
• Updates the error message about pytest.mark.asyncio's scope keyword argument to say loop_scope instead. #​1004
• Verbose log displays correct parameter name: asyncio_default_fixture_loop_scope #​990
• Propagates contextvars set in async fixtures to other fixtures and tests on Python 3.11 and above. #​1008