✅ Add missing tests for code examples (#14569)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Nils-Hero Lindemann <nilsherolindemann@proton.me>

tests/test_tutorial/test_graphql/test_tutorial001.py

@@ -0,0 +1,70 @@
+import warnings
+
+import pytest
+from starlette.testclient import TestClient
+
+warnings.filterwarnings(
+    "ignore",
+    message=r"The 'lia' package has been renamed to 'cross_web'\..*",
+    category=DeprecationWarning,
+)
+
+from docs_src.graphql_.tutorial001_py39 import app  # noqa: E402
+
+
+@pytest.fixture(name="client")
+def get_client() -> TestClient:
+    return TestClient(app)
+
+
+def test_query(client: TestClient):
+    response = client.post("/graphql", json={"query": "{ user { name, age } }"})
+    assert response.status_code == 200
+    assert response.json() == {"data": {"user": {"name": "Patrick", "age": 100}}}
+
+
+def test_openapi(client: TestClient):
+    response = client.get("/openapi.json")
+    assert response.status_code == 200
+    assert response.json() == {
+        "info": {
+            "title": "FastAPI",
+            "version": "0.1.0",
+        },
+        "openapi": "3.1.0",
+        "paths": {
+            "/graphql": {
+                "get": {
+                    "operationId": "handle_http_get_graphql_get",
+                    "responses": {
+                        "200": {
+                            "content": {
+                                "application/json": {
+                                    "schema": {},
+                                },
+                            },
+                            "description": "The GraphiQL integrated development environment.",
+                        },
+                        "404": {
+                            "description": "Not found if GraphiQL or query via GET are not enabled.",
+                        },
+                    },
+                    "summary": "Handle Http Get",
+                },
+                "post": {
+                    "operationId": "handle_http_post_graphql_post",
+                    "responses": {
+                        "200": {
+                            "content": {
+                                "application/json": {
+                                    "schema": {},
+                                },
+                            },
+                            "description": "Successful Response",
+                        },
+                    },
+                    "summary": "Handle Http Post",
+                },
+            },
+        },
+    }