✅ Add test for streaming PNG example

tests/test_tutorial/test_stream_data/test_tutorial002.py

@@ -0,0 +1,106 @@
+import importlib
+
+import pytest
+from fastapi.testclient import TestClient
+from inline_snapshot import snapshot
+
+
+@pytest.fixture(
+    name="mod",
+    params=[
+        pytest.param("tutorial002_py310"),
+    ],
+)
+def get_mod(request: pytest.FixtureRequest):
+    return importlib.import_module(f"docs_src.stream_data.{request.param}")
+
+
+@pytest.fixture(name="client")
+def get_client(mod):
+    client = TestClient(mod.app)
+    return client
+
+
+@pytest.mark.parametrize(
+    "path",
+    [
+        "/image/stream",
+        "/image/stream-no-async",
+        "/image/stream-no-annotation",
+        "/image/stream-no-async-no-annotation",
+    ],
+)
+def test_stream_image(mod, client: TestClient, path: str):
+    response = client.get(path)
+    assert response.status_code == 200
+    assert response.headers["content-type"] == "image/png"
+    assert response.content == mod.binary_image
+
+
+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": {
+                "/image/stream": {
+                    "get": {
+                        "summary": "Stream Image",
+                        "operationId": "stream_image_image_stream_get",
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "image/png": {"schema": {"type": "string"}}
+                                },
+                            }
+                        },
+                    }
+                },
+                "/image/stream-no-async": {
+                    "get": {
+                        "summary": "Stream Image No Async",
+                        "operationId": "stream_image_no_async_image_stream_no_async_get",
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "image/png": {"schema": {"type": "string"}}
+                                },
+                            }
+                        },
+                    }
+                },
+                "/image/stream-no-annotation": {
+                    "get": {
+                        "summary": "Stream Image No Annotation",
+                        "operationId": "stream_image_no_annotation_image_stream_no_annotation_get",
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "image/png": {"schema": {"type": "string"}}
+                                },
+                            }
+                        },
+                    }
+                },
+                "/image/stream-no-async-no-annotation": {
+                    "get": {
+                        "summary": "Stream Image No Async No Annotation",
+                        "operationId": "stream_image_no_async_no_annotation_image_stream_no_async_no_annotation_get",
+                        "responses": {
+                            "200": {
+                                "description": "Successful Response",
+                                "content": {
+                                    "image/png": {"schema": {"type": "string"}}
+                                },
+                            }
+                        },
+                    }
+                },
+            },
+        }
+    )