[fix] Fixes a bug that caused an internal pytest error when using uni…

…ttest.SkipTest in a module.

Signed-off-by: Michael Seifert <m.seifert@digitalernachschub.de>

docs/source/reference/changelog.rst

@@ -5,6 +5,7 @@ Changelog
 0.23.3 (UNRELEASED)
 ===================
 - Fixes a bug that caused event loops to be closed prematurely when using async generator fixtures with class scope or wider in a function-scoped test `#708 <https://github.com/pytest-dev/pytest-asyncio/issues/708>`_
+- Fixes a bug that caused an internal pytest error when using unittest.SkipTest in a module `#711 <https://github.com/pytest-dev/pytest-asyncio/issues/711>`_
 
 
 0.23.2 (2023-12-04)

pytest_asyncio/plugin.py

@@ -26,6 +26,7 @@
     Union,
     overload,
 )
+from unittest import SkipTest
 
 import pytest
 from _pytest.outcomes import OutcomeException
@@ -622,6 +623,10 @@ def scoped_event_loop(
         # kwargs is missing. These cases are handled correctly when they happen inside
         # Collector.collect(), but this hook runs before the actual collect call.
         return
+    except SkipTest:
+        # Users may also have a unittest suite that they run with pytest.
+        # Therefore, we need to handle SkipTest to avoid breaking test collection.
+        return
     # When collector is a package, collector.obj is the package's __init__.py.
     # pytest doesn't seem to collect fixtures in __init__.py.
     # Using parsefactories to collect fixtures in __init__.py their baseid will end

tests/test_skips.py

@@ -88,3 +88,20 @@ async def test_is_skipped():
     )
     result = pytester.runpytest("--asyncio-mode=auto")
     result.assert_outcomes(errors=1)
+
+
+def test_unittest_skiptest_compatibility(pytester: Pytester):
+    pytester.makepyfile(
+        dedent(
+            """\
+                from unittest import SkipTest
+
+                raise SkipTest("Skip all tests")
+
+                async def test_is_skipped():
+                    pass
+            """
+        )
+    )
+    result = pytester.runpytest("--asyncio-mode=auto")
+    result.assert_outcomes(skipped=1)