Prevent double wrapping of inherited Hypothesis tests

README.rst

@@ -175,6 +175,8 @@ Changelog
 ~~~~~~~~~~~~~~~~~~~
 - `pytest-asyncio` no longer alters existing event loop policies. `#168 <https://github.com/pytest-dev/pytest-asyncio/issues/168>`_, `#188 <https://github.com/pytest-dev/pytest-asyncio/issues/168>`_
 - Drop support for Python 3.6
+- Fixed an issue when pytest-asyncio was used in combination with `flaky` or inherited asynchronous Hypothesis tests. `#178 <https://github.com/pytest-dev/pytest-asyncio/issues/178>`_ `#231 <https://github.com/pytest-dev/pytest-asyncio/issues/231>`_
+- Added `flaky <https://pypi.org/project/flaky/>`_ to test dependencies
 
 0.16.0 (2021-10-16)
 ~~~~~~~~~~~~~~~~~~~

pytest_asyncio/plugin.py

@@ -153,8 +153,9 @@ async def setup():
 @pytest.hookimpl(tryfirst=True, hookwrapper=True)
 def pytest_pyfunc_call(pyfuncitem):
     """
-    Run asyncio marked test functions in an event loop instead of a normal
-    function call.
+    Pytest hook called before a test case is run.
+
+    Wraps marked tests in a synchronous function where the wrapped test coroutine is executed in an event loop.
     """
     if "asyncio" in pyfuncitem.keywords:
         if getattr(pyfuncitem.obj, "is_hypothesis_test", False):
@@ -176,7 +177,7 @@ def wrap_in_sync(func, _loop):
     # if the function is already wrapped, we rewrap using the original one
     # not using __wrapped__ because the original function may already be
     # a wrapped one
-    if hasattr(func, '_raw_test_func'):
+    if hasattr(func, "_raw_test_func"):
         func = func._raw_test_func
 
     @functools.wraps(func)

tests/hypothesis/test_inherited_test.py

@@ -0,0 +1,22 @@
+import hypothesis.strategies as st
+from hypothesis import given
+import pytest
+
+
+class BaseClass:
+    @pytest.mark.asyncio
+    @given(value=st.integers())
+    async def test_hypothesis(self, value: int) -> None:
+        assert True
+
+
+class TestOne(BaseClass):
+    """During the first execution the Hypothesis test is wrapped in a synchronous function."""
+
+    pass
+
+
+class TestTwo(BaseClass):
+    """Execute the test a second time to ensure that the test receives a fresh event loop."""
+
+    pass