test: add pytest config to isolated test directories

- Add pytester.makeini() calls to ensure asyncio_default_fixture_loop_scope
is properly configured in test directories

Author: joao-faria-dev

tests/markers/test_invalid_arguments.py

@@ -8,6 +8,7 @@
 def test_no_error_when_scope_passed_as_sole_keyword_argument(
     pytester: pytest.Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -27,6 +28,7 @@ async def test_anything():
 def test_error_when_scope_passed_as_positional_argument(
     pytester: pytest.Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -48,6 +50,7 @@ async def test_anything():
 def test_error_when_wrong_keyword_argument_is_passed(
     pytester: pytest.Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -69,6 +72,7 @@ async def test_anything():
 def test_error_when_additional_keyword_arguments_are_passed(
     pytester: pytest.Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\

tests/test_asyncio_mark.py

@@ -6,6 +6,7 @@
 
 
 def test_asyncio_mark_on_sync_function_emits_warning(pytester: Pytester):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -27,6 +28,7 @@ def test_a():
 def test_asyncio_mark_on_async_generator_function_emits_warning_in_strict_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -48,6 +50,7 @@ async def test_a():
 def test_asyncio_mark_on_async_generator_function_emits_warning_in_auto_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -66,6 +69,7 @@ async def test_a():
 def test_asyncio_mark_on_async_generator_method_emits_warning_in_strict_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -88,6 +92,7 @@ async def test_a(self):
 def test_asyncio_mark_on_async_generator_method_emits_warning_in_auto_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -108,6 +113,7 @@ async def test_a():
 def test_asyncio_mark_on_async_generator_staticmethod_emits_warning_in_strict_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\
@@ -131,6 +137,7 @@ async def test_a():
 def test_asyncio_mark_on_async_generator_staticmethod_emits_warning_in_auto_mode(
     pytester: Pytester,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             """\

tests/test_event_loop_fixture.py

@@ -6,6 +6,7 @@
 
 
 def test_event_loop_fixture_respects_event_loop_policy(pytester: Pytester):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makeconftest(
         dedent(
             """\

tests/test_fixture_loop_scopes.py

@@ -13,6 +13,7 @@ def test_loop_scope_session_is_independent_of_fixture_scope(
     pytester: Pytester,
     fixture_scope: str,
 ):
+    pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
     pytester.makepyfile(
         dedent(
             f"""\