chore: 允许 ai-service Python 文件入库（.gitignore 例外）

ai-service/tests/test_api.py

@@ -0,0 +1,42 @@
+import base64
+
+from fastapi.testclient import TestClient
+
+from app.main import app
+
+# 1x1 透明 PNG
+TINY_PNG = base64.b64decode(
+    "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg=="
+)
+
+client = TestClient(app)
+
+
+def test_health():
+    r = client.get("/health")
+    assert r.status_code == 200
+    body = r.json()
+    assert body["status"] == "ok"
+    assert body["model"] in ("mock", "onnx")
+
+
+def test_detect_ok():
+    r = client.post("/detect", files={"file": ("a.png", TINY_PNG, "image/png")})
+    assert r.status_code == 200
+    body = r.json()
+    assert body["model"] == "mock"
+    assert len(body["detections"]) >= 1
+    d = body["detections"][0]
+    assert d["class"] in ("healthy", "sick")
+    assert 0 <= d["confidence"] <= 1
+    assert d["bbox"]["w"] > 0
+
+
+def test_detect_empty_file_rejected():
+    r = client.post("/detect", files={"file": ("a.png", b"", "image/png")})
+    assert r.status_code == 400
+
+
+def test_detect_invalid_image_rejected():
+    r = client.post("/detect", files={"file": ("a.png", b"junk", "image/png")})
+    assert r.status_code == 400