✅ Add tests for JSON Lines

tests/test_tutorial/test_stream_json_lines/test_tutorial001.py

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+import importlib
+import json
+
+import pytest
+from fastapi.testclient import TestClient
+from inline_snapshot import snapshot
+
+
+@pytest.fixture(
+    name="client",
+    params=[
+        pytest.param("tutorial001_py310"),
+    ],
+)
+def get_client(request: pytest.FixtureRequest):
+    mod = importlib.import_module(f"docs_src.stream_json_lines.{request.param}")
+
+    client = TestClient(mod.app)
+    return client
+
+
+expected_items = [
+    {"name": "Plumbus", "description": "A multi-purpose household device."},
+    {"name": "Portal Gun", "description": "A portal opening device."},
+]
+
+
+@pytest.mark.parametrize(
+    "path",
+    [
+        "/items/stream",
+        "/items/stream-no-async",
+        "/items/stream-no-annotation",
+        "/items/stream-no-async-no-annotation",
+    ],
+)
+def test_stream_items(client: TestClient, path: str):
+    response = client.get(path)
+    assert response.status_code == 200, response.text
+    assert response.headers["content-type"] == "application/jsonl"
+    lines = [json.loads(line) for line in response.text.strip().splitlines()]
+    assert lines == expected_items
+
+
+def test_openapi_schema(client: TestClient):
+    response = client.get("/openapi.json")
+    assert response.status_code == 200, response.text
+    assert response.json() == snapshot(
+        {
+            "openapi": "3.1.0",
+            "info": {"title": "FastAPI", "version": "0.1.0"},
+            "paths": {
+                "/items/stream": {
+                    "get": {
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "application/jsonl": {
+                                        "itemSchema": {
+                                            "$ref": "#/components/schemas/Item"
+                                        },
+                                    }
+                                },
+                            }
+                        },
+                        "summary": "Stream Items",
+                        "operationId": "stream_items_items_stream_get",
+                    }
+                },
+                "/items/stream-no-async": {
+                    "get": {
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "application/jsonl": {
+                                        "itemSchema": {
+                                            "$ref": "#/components/schemas/Item"
+                                        },
+                                    }
+                                },
+                            }
+                        },
+                        "summary": "Stream Items No Async",
+                        "operationId": "stream_items_no_async_items_stream_no_async_get",
+                    }
+                },
+                "/items/stream-no-annotation": {
+                    "get": {
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "application/jsonl": {
+                                        "itemSchema": {},
+                                    }
+                                },
+                            }
+                        },
+                        "summary": "Stream Items No Annotation",
+                        "operationId": "stream_items_no_annotation_items_stream_no_annotation_get",
+                    }
+                },
+                "/items/stream-no-async-no-annotation": {
+                    "get": {
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "application/jsonl": {
+                                        "itemSchema": {},
+                                    }
+                                },
+                            }
+                        },
+                        "summary": "Stream Items No Async No Annotation",
+                        "operationId": "stream_items_no_async_no_annotation_items_stream_no_async_no_annotation_get",
+                    }
+                },
+            },
+            "components": {
+                "schemas": {
+                    "Item": {
+                        "properties": {
+                            "name": {"type": "string", "title": "Name"},
+                            "description": {
+                                "anyOf": [
+                                    {"type": "string"},
+                                    {"type": "null"},
+                                ],
+                                "title": "Description",
+                            },
+                        },
+                        "type": "object",
+                        "required": ["name", "description"],
+                        "title": "Item",
+                    }
+                }
+            },
+        }
+    )