How to test the GET method that takes parser inputs in flask-restx?

[kashyapm94]

I am making a flask app using Flask-restx and I take inputs from the user by request parsing as follows:

from flask_restx import Resource, reqparse
from .services.calculator import DimensionCalculator
parser = reqparse.RequestParser()
parser.add_argument("dimensions", type=float,
                    required=True,
                    action='split',
                    help="Dimensions of the rectangle (in meters)")
parser.add_argument("angle_inclination", type=float,
                    required=True,
                    action='append',
                    help="Angle of inclination of the Dachfläche (Neigung)")
@ns.route("/output")
class UserOutput(Resource):
    @ns.expect(parser, validation=True)
    def get(self):
        args = parser.parse_args()
        return DimensionCalculator.inputs(**args)

where ns is a namespace I have defined and the simplified version of DimensionCalculator.inputs is:

class DimensionCalculator:
    def inputs(**user_input):
        installation_place = user_input['installation_place']
        num_rectangles = user_input['num_rectangles']
        dimensions = user_input['dimensions']
        angle_inclination = user_input['angle_inclination']
        alignment = user_input['alignment']
        direction = user_input['direction']
        vendor = user_input['vendor']
        output = {
                    "installation_place": installation_place,
                    "num_rectangles": num_rectangles,
                    "area_shape": area_shape,
                    "vendor": vendor
                }
        return output

I am writing tests using pytest. I have written the tests for all the classes and methods and the only one that I am unable to test is the GET method defined in the UserOutput. Is there a way to test the GET method?

Any help is appreciated.