diff --git a/tests/test_tutorial/test_query_params_str_validations/test_tutorial002.py b/tests/test_tutorial/test_query_params_str_validations/test_tutorial002.py
new file mode 100644
index 000000000..acecaa5cf
--- /dev/null
+++ b/tests/test_tutorial/test_query_params_str_validations/test_tutorial002.py
@@ -0,0 +1,144 @@
+import importlib
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ...utils import needs_py310, needs_pydanticv2
+
+skip_for_pydantic_v1 = needs_pydanticv2
+
+
+@pytest.fixture(
+    name="client",
+    params=[
+        pytest.param("tutorial002"),
+        pytest.param("tutorial002_py310", marks=needs_py310),
+        pytest.param("tutorial002_an"),
+        pytest.param("tutorial002_an_py310", marks=needs_py310),
+    ],
+)
+def get_client(request: pytest.FixtureRequest):
+    mod = importlib.import_module(
+        f"docs_src.query_params_str_validations.{request.param}"
+    )
+
+    client = TestClient(mod.app)
+    return client
+
+
+def test_query_params_str_validations_no_query(client: TestClient):
+    response = client.get("/items/")
+    assert response.status_code == 200
+    assert response.json() == {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
+
+
+def test_query_params_str_validations_q_empty_str(client: TestClient):
+    response = client.get("/items/", params={"q": ""})
+    assert response.status_code == 200
+    assert response.json() == {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
+
+
+def test_query_params_str_validations_q_query(client: TestClient):
+    response = client.get("/items/", params={"q": "query"})
+    assert response.status_code == 200
+    assert response.json() == {
+        "items": [{"item_id": "Foo"}, {"item_id": "Bar"}],
+        "q": "query",
+    }
+
+
+def test_query_params_str_validations_q_too_long(client: TestClient):
+    response = client.get("/items/", params={"q": "q" * 51})
+    assert response.status_code == 422
+    assert response.json() == {
+        "detail": [
+            {
+                "type": "string_too_long",
+                "loc": ["query", "q"],
+                "msg": "String should have at most 50 characters",
+                "input": "q" * 51,
+                "ctx": {"max_length": 50},
+            }
+        ]
+    }
+
+
+def test_openapi_schema(client: TestClient):
+    response = client.get("/openapi.json")
+    assert response.status_code == 200, response.text
+    assert response.json() == {
+        "openapi": "3.1.0",
+        "info": {"title": "FastAPI", "version": "0.1.0"},
+        "paths": {
+            "/items/": {
+                "get": {
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {"application/json": {"schema": {}}},
+                        },
+                        "422": {
+                            "description": "Validation Error",
+                            "content": {
+                                "application/json": {
+                                    "schema": {
+                                        "$ref": "#/components/schemas/HTTPValidationError"
+                                    }
+                                }
+                            },
+                        },
+                    },
+                    "summary": "Read Items",
+                    "operationId": "read_items_items__get",
+                    "parameters": [
+                        {
+                            "required": False,
+                            "schema": {
+                                "anyOf": [
+                                    {
+                                        "type": "string",
+                                        "maxLength": 50,
+                                    },
+                                    {"type": "null"},
+                                ],
+                                "title": "Q",
+                            },
+                            "name": "q",
+                            "in": "query",
+                        }
+                    ],
+                }
+            }
+        },
+        "components": {
+            "schemas": {
+                "ValidationError": {
+                    "title": "ValidationError",
+                    "required": ["loc", "msg", "type"],
+                    "type": "object",
+                    "properties": {
+                        "loc": {
+                            "title": "Location",
+                            "type": "array",
+                            "items": {
+                                "anyOf": [{"type": "string"}, {"type": "integer"}]
+                            },
+                        },
+                        "msg": {"title": "Message", "type": "string"},
+                        "type": {"title": "Error Type", "type": "string"},
+                    },
+                },
+                "HTTPValidationError": {
+                    "title": "HTTPValidationError",
+                    "type": "object",
+                    "properties": {
+                        "detail": {
+                            "title": "Detail",
+                            "type": "array",
+                            "items": {"$ref": "#/components/schemas/ValidationError"},
+                        }
+                    },
+                },
+            }
+        },
+    }