[refactor] Moved test for warning generated when sync functions are marked with "asyncio" into a separate test module.

The "test_simple" module is named too general. Thus, it serves as a magnet for all kinds of tests that aren't connected to each other. This is one step to break up the "test_simple" module into more coherent test modules.

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

Author: seifertm

tests/test_asyncio_mark_on_sync_function.py

@@ -0,0 +1,33 @@
+from textwrap import dedent
+
+
+def test_warn_asyncio_marker_for_regular_func(testdir):
+    testdir.makepyfile(
+        dedent(
+            """\
+        import pytest
+
+        pytest_plugins = 'pytest_asyncio'
+
+        @pytest.mark.asyncio
+        def test_a():
+            pass
+        """
+        )
+    )
+    testdir.makefile(
+        ".ini",
+        pytest=dedent(
+            """\
+        [pytest]
+        asyncio_mode = strict
+        filterwarnings =
+            default
+    """
+        ),
+    )
+    result = testdir.runpytest()
+    result.assert_outcomes(passed=1)
+    result.stdout.fnmatch_lines(
+        ["*is marked with '@pytest.mark.asyncio' but it is not an async function.*"]
+    )

tests/test_simple.py

@@ -300,38 +300,6 @@ async def test_no_warning_on_skip():
     result.assert_outcomes(skipped=1)
 
 
-def test_warn_asyncio_marker_for_regular_func(testdir):
-    testdir.makepyfile(
-        dedent(
-            """\
-        import pytest
-
-        pytest_plugins = 'pytest_asyncio'
-
-        @pytest.mark.asyncio
-        def test_a():
-            pass
-        """
-        )
-    )
-    testdir.makefile(
-        ".ini",
-        pytest=dedent(
-            """\
-        [pytest]
-        asyncio_mode = strict
-        filterwarnings =
-            default
-    """
-        ),
-    )
-    result = testdir.runpytest()
-    result.assert_outcomes(passed=1)
-    result.stdout.fnmatch_lines(
-        ["*is marked with '@pytest.mark.asyncio' but it is not an async function.*"]
-    )
-
-
 def test_invalid_asyncio_mode(testdir):
     result = testdir.runpytest("-o", "asyncio_mode=True")
     result.stderr.no_fnmatch_line("INTERNALERROR> *")