testing of example

services/game/app/__init__.py

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+from flask import Flask
+
+def create_app():
+    app = Flask(__name__)
+
+    @app.route("/")
+    def hello_world():
+        return "Hello, World!"
+
+    return app

services/game/app/config.py

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+import os
+
+class Config:
+    SECRET_KEY = os.environ.get("SECRET_KEY", "default_secret_key")

services/game/app/main.py

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+from . import create_app
+
+app = create_app()

services/game/manage.py

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+from app import create_app
+
+app = create_app()
+
+if __name__ == "__main__":
+    app.run()

services/game/requirements.txt

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+Flask==2.2.2
+pytest==7.2.0
+gunicorn==20.1.0
+psycopg2-binary==2.9.6

services/game/tests/test_app.py

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+import pytest
+from app import create_app
+
+@pytest.fixture
+def app():
+    app = create_app()
+    app.config.update({
+        "TESTING": True,
+    })
+    return app
+
+@pytest.fixture
+def client(app):
+    return app.test_client()
+
+def test_hello_world(client):
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.data == b"Hello, World!"