Add tests for variants of `settings/app2`

tests/test_tutorial/test_settings/test_app02.py

@@ -1,20 +1,45 @@
+import importlib
+from types import ModuleType
+
+import pytest
 from pytest import MonkeyPatch
 
-from ...utils import needs_pydanticv2
+from ...utils import needs_py39, needs_pydanticv2
+
+
+@pytest.fixture(
+    name="mod_path",
+    params=[
+        pytest.param("app02"),
+        pytest.param("app02_an"),
+        pytest.param("app02_an_py39", marks=needs_py39),
+    ],
+)
+def get_mod_path(request: pytest.FixtureRequest):
+    mod_path = f"docs_src.settings.{request.param}"
+    return mod_path
+
+
+@pytest.fixture(name="main_mod")
+def get_main_mod(mod_path: str) -> ModuleType:
+    main_mod = importlib.import_module(f"{mod_path}.main")
+    return main_mod
+
+
+@pytest.fixture(name="test_main_mod")
+def get_test_main_mod(mod_path: str) -> ModuleType:
+    test_main_mod = importlib.import_module(f"{mod_path}.test_main")
+    return test_main_mod
 
 
 @needs_pydanticv2
-def test_settings(monkeypatch: MonkeyPatch):
-    from docs_src.settings.app02 import main
-
+def test_settings(main_mod: ModuleType, monkeypatch: MonkeyPatch):
     monkeypatch.setenv("ADMIN_EMAIL", "admin@example.com")
-    settings = main.get_settings()
+    settings = main_mod.get_settings()
     assert settings.app_name == "Awesome API"
     assert settings.items_per_user == 50
 
 
 @needs_pydanticv2
-def test_override_settings():
-    from docs_src.settings.app02 import test_main
-
-    test_main.test_app()
+def test_override_settings(test_main_mod: ModuleType):
+    test_main_mod.test_app()