✅ Refactor OpenAPI tests, prepare for Pydantic v2 (#9503)

* ✅ Refactor OpenAPI tests, move inline, prepare for Pydantic v2 tests

* ✅ Fix test module loading for conditional OpenAPI

* 🐛 Fix missing pytest marker

* ✅ Fix test for coverage

tests/test_tutorial/test_conditional_openapi/test_tutorial001.py

@@ -4,35 +4,6 @@ from fastapi.testclient import TestClient
 
 from docs_src.conditional_openapi import tutorial001
 
-openapi_schema = {
-    "openapi": "3.0.2",
-    "info": {"title": "FastAPI", "version": "0.1.0"},
-    "paths": {
-        "/": {
-            "get": {
-                "summary": "Root",
-                "operationId": "root__get",
-                "responses": {
-                    "200": {
-                        "description": "Successful Response",
-                        "content": {"application/json": {"schema": {}}},
-                    }
-                },
-            }
-        }
-    },
-}
-
-
-def test_default_openapi():
-    client = TestClient(tutorial001.app)
-    response = client.get("/openapi.json")
-    assert response.json() == openapi_schema
-    response = client.get("/docs")
-    assert response.status_code == 200, response.text
-    response = client.get("/redoc")
-    assert response.status_code == 200, response.text
-
 
 def test_disable_openapi(monkeypatch):
     monkeypatch.setenv("OPENAPI_URL", "")
@@ -51,3 +22,31 @@ def test_root():
     response = client.get("/")
     assert response.status_code == 200
     assert response.json() == {"message": "Hello World"}
+
+
+def test_default_openapi():
+    importlib.reload(tutorial001)
+    client = TestClient(tutorial001.app)
+    response = client.get("/docs")
+    assert response.status_code == 200, response.text
+    response = client.get("/redoc")
+    assert response.status_code == 200, response.text
+    response = client.get("/openapi.json")
+    assert response.json() == {
+        "openapi": "3.0.2",
+        "info": {"title": "FastAPI", "version": "0.1.0"},
+        "paths": {
+            "/": {
+                "get": {
+                    "summary": "Root",
+                    "operationId": "root__get",
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {"application/json": {"schema": {}}},
+                        }
+                    },
+                }
+            }
+        },
+    }