import 'package:flutter_test/flutter_test.dart'; import 'package:cpd_2022_energy/result_model.dart'; void main() { test('Joule value should be calculated', () { final result = ResultModel(); result.changeJoule(10000, 1, 10, 1, 1); expect(result.getJoule, 1377000); expect(result.getWater, 4.11); expect(result.getIron, 4.05); }); }