Improve contextvars test coverage

pytest_asyncio/plugin.py

@@ -381,12 +381,10 @@ def _create_task_in_context(loop, coro, context):
     the API added for https://github.com/python/cpython/issues/91150.
     On earlier versions, the returned task will use the default context instead.
     """
-    if context is not None:
-        try:
-            return loop.create_task(coro, context=context)
-        except TypeError:
-            pass
-    return loop.create_task(coro)
+    try:
+        return loop.create_task(coro, context=context)
+    except TypeError:
+        return loop.create_task(coro)
 
 
 def _wrap_async_fixture(fixturedef: FixtureDef) -> None:

tests/async_fixtures/test_async_fixtures_contextvars.py

@@ -33,27 +33,34 @@ async def no_var_fixture():
 
 
 @pytest.fixture(scope="function")
-async def var_fixture(no_var_fixture):
-    with context_var_manager("value"):
+async def var_fixture_1(no_var_fixture):
+    with context_var_manager("value1"):
         yield
 
 
 @pytest.fixture(scope="function")
-async def var_nop_fixture(var_fixture):
+async def var_nop_fixture(var_fixture_1):
     with context_var_manager(_context_var.get()):
         yield
 
 
 @pytest.fixture(scope="function")
-def inner_var_fixture(var_nop_fixture):
-    assert _context_var.get() == "value"
+def var_fixture_2(var_nop_fixture):
+    assert _context_var.get() == "value1"
     with context_var_manager("value2"):
         yield
 
 
+@pytest.fixture(scope="function")
+async def var_fixture_3(var_fixture_2):
+    assert _context_var.get() == "value2"
+    with context_var_manager("value3"):
+        yield
+
+
 @pytest.mark.asyncio
 @pytest.mark.xfail(
     sys.version_info < (3, 11), reason="requires asyncio Task context support"
 )
-async def test(inner_var_fixture):
-    assert _context_var.get() == "value2"
+async def test(var_fixture_3):
+    assert _context_var.get() == "value3"