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Testing a Flask App

 Main.py

from flask import Flask

from flask_restful import Api, Resource, reqparse

app = Flask(__name__)

api = Api(app)

@app.route("/")

def hello_world():

    return "<p>Hello, World!</p>"

class DemoApiEndpoint(Resource):

    def __init__(self):

        self.post_args = reqparse.RequestParser()

        self.post_args.add_argument("name",

                                    type=str,

                                    help="You must include a name string with this post request.",

                                    required=True)

    def get(self):

        return {

            "message": "This is a response from a GET request."

        }

    def post(self):

        args = self.post_args.parse_args()

        name = args['name']

        return {

            "message": f'Nice to meet you, {name}!'

        }

api.add_resource(DemoApiEndpoint, "/api/DemoApiEndpoint")

if __name__ == '__main__':

    app.run(host="0.0.0.0", port=80, debug=True)



tests/test_home_route.py

from main import app

def test_home_route():

    response = app.test_client().get('/')

    assert response.status_code == 200

    assert b"Hello, World!" in response.data



tests/test_demo_api_endpoint.py

from main import app

def test_get_api_endpoint():

    with app.test_client() as c:

        response = c.get('api/DemoApiEndpoint')

        assert response.status_code == 200

        json_response = response.get_json()

        assert json_response == {'message': 'This is a response from a GET request.'}


def test_post_api_endpoint():

    with app.test_client() as c:

        response = c.post('api/DemoApiEndpoint', json={

            "name": "Vincent"

        })

        assert response.status_code == 200

        json_response = response.get_json()

        assert json_response == {'message': 'Nice to meet you, Vincent!'}


# test_api_endpoint()

# test_post_api_endpoint()

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