tests/test_tutorial/test_middleware/test_tutorial001.py: new test added

tests/test_tutorial/test_middleware/test_tutorial001.py

@@ -0,0 +1,12 @@
+from docs_src.middleware.tutorial001 import app
+from fastapi.testclient import TestClient
+
+
+def test_add_process_time_header_middleware():
+    client = TestClient(app)
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.json() == {"hello": "world"}
+    assert "X-Process-Time" in response.headers
+    assert len(response.headers["X-Process-Time"]) > 0
+