added test fixture

services/api/app/main.py

@@ -5,6 +5,6 @@ app = FastAPI()
 
 
 @app.get('/ping')
-def pong():
+async def pong():
     now = dt.datetime.now(dt.timezone.utc)
     return {'ping': "pong!", 'now': now}

services/api/tests/conftest.py

@@ -0,0 +1,10 @@
+import pytest
+from starlette.testclient import TestClient
+
+from app.main import app
+
+
+@pytest.fixture(scope="module")
+def test_app():
+    client = TestClient(app)
+    yield client

services/api/tests/test_main.py

@@ -1,11 +1,5 @@
-from app.main import app
-from starlette.testclient import TestClient
-
-client = TestClient(app)
-
-
-def test_read_main():
-    response = client.get('/ping')
+def test_read_main(test_app):
+    response = test_app.get('/ping')
     assert response.status_code == 200
     data = response.json()
     assert "pong" in data['ping']