feat: FastAPI app with REST API routes and WebSocket endpoint

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/test_api_broker.py

@@ -0,0 +1,29 @@
+import pytest
+from httpx import AsyncClient, ASGITransport
+
+from mqtt_home.main import app
+
+
+@pytest.fixture
+async def client():
+    transport = ASGITransport(app=app)
+    async with AsyncClient(transport=transport, base_url="http://test") as ac:
+        yield ac
+
+
+async def test_broker_status_no_client(client):
+    resp = await client.get("/api/broker/status")
+    assert resp.status_code == 503
+
+
+async def test_broker_clients_no_client(client):
+    resp = await client.get("/api/broker/clients")
+    assert resp.status_code == 503
+
+
+async def test_health_endpoint(client):
+    resp = await client.get("/health")
+    assert resp.status_code == 200
+    data = resp.json()
+    assert "status" in data
+    assert "mqtt_connected" in data

tests/test_api_devices.py

@@ -0,0 +1,93 @@
+import pytest
+from httpx import AsyncClient, ASGITransport
+
+from mqtt_home.main import app
+from mqtt_home.database import Base, get_engine
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker
+from sqlalchemy.pool import StaticPool
+from mqtt_home.database import get_db
+
+TEST_DB = "sqlite+aiosqlite:///:memory:"
+
+
+@pytest.fixture
+async def client():
+    engine = create_async_engine(TEST_DB, connect_args={"check_same_thread": False}, poolclass=StaticPool)
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)
+
+    test_factory = async_sessionmaker(engine, expire_on_commit=False)
+
+    async def override_get_db():
+        async with test_factory() as session:
+            yield session
+
+    app.dependency_overrides[get_db] = override_get_db
+
+    transport = ASGITransport(app=app)
+    async with AsyncClient(transport=transport, base_url="http://test") as ac:
+        yield ac
+
+    app.dependency_overrides.clear()
+    await engine.dispose()
+
+
+async def test_get_devices_empty(client):
+    resp = await client.get("/api/devices")
+    assert resp.status_code == 200
+    assert resp.json() == []
+
+
+async def test_create_device(client):
+    resp = await client.post("/api/devices", json={
+        "name": "客厅灯",
+        "type": "light",
+        "mqtt_topic": "home/light",
+        "command_topic": "home/light/set",
+    })
+    assert resp.status_code == 201
+    data = resp.json()
+    assert data["name"] == "客厅灯"
+    assert data["type"] == "light"
+
+
+async def test_get_device_detail(client):
+    create_resp = await client.post("/api/devices", json={
+        "name": "灯", "type": "switch", "mqtt_topic": "t"
+    })
+    device_id = create_resp.json()["id"]
+
+    resp = await client.get(f"/api/devices/{device_id}")
+    assert resp.status_code == 200
+    assert resp.json()["name"] == "灯"
+
+
+async def test_get_device_not_found(client):
+    resp = await client.get("/api/devices/nonexistent")
+    assert resp.status_code == 404
+
+
+async def test_update_device(client):
+    create_resp = await client.post("/api/devices", json={
+        "name": "灯", "type": "switch", "mqtt_topic": "t"
+    })
+    device_id = create_resp.json()["id"]
+
+    resp = await client.put(f"/api/devices/{device_id}", json={"name": "新名字"})
+    assert resp.status_code == 200
+    assert resp.json()["name"] == "新名字"
+
+
+async def test_delete_device(client):
+    create_resp = await client.post("/api/devices", json={
+        "name": "灯", "type": "switch", "mqtt_topic": "t"
+    })
+    device_id = create_resp.json()["id"]
+
+    resp = await client.delete(f"/api/devices/{device_id}")
+    assert resp.status_code == 204
+
+
+async def test_delete_device_not_found(client):
+    resp = await client.delete("/api/devices/nonexistent")
+    assert resp.status_code == 404