fixed tests

tests/test_ayct_backend.py

@@ -5,15 +5,14 @@ import pytest
 from ayct_backend import create_app
 
 @pytest.fixture
-def client():
+def app():
     app = create_app()
-    app.config['TESTING'] = True
-    app.run(host = '0.0.0.0', port = 5000)
 
-    with app.test_client() as client:
-        with app.app_context():
-            pass
-        yield client
+    yield app
+
+@pytest.fixture
+def client(app):
+   yield app.test_client()
 
 def test_first_endpoint(client):
     rv = client.get("/hello")