widget_test.dart

// Copyright 2018 Andrious Solutions Ltd. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/// Show clause is used for you to appreciate what is used in the testing.
import 'package:example/src/view.dart' show MyApp, UniqueKey;

import 'package:flutter_test/flutter_test.dart'
    show WidgetTester, tearDownAll, testWidgets;

import 'package:integration_test/integration_test.dart'
    show IntegrationTestWidgetsFlutterBinding;

import '../integration_test/_test_example_app.dart'
    show integrationTesting, resetPage1Count;

import '_unit_testing.dart' show unitTesting;

import 'test_listener.dart' show testsStateListener01;

void main() => testMyApp();

/// Also called in package's own testing file, test/widget_test.dart
void testMyApp() {
  //
  final app = MyApp(key: UniqueKey());

  IntegrationTestWidgetsFlutterBinding.ensureInitialized();

  /// Registers a function to be run once after all tests.
  /// Be sure the close the app after all the testing.
  tearDownAll(() {});

  testWidgets(
    'test mvc_pattern',
    (WidgetTester tester) async {
      // Tells the tester to build a UI based on the widget tree passed to it
      await tester.pumpWidget(app);

      /// Flutter won’t automatically rebuild your widget in the test environment.
      /// Use pump() or pumpAndSettle() to ask Flutter to rebuild the widget.

      /// pumpAndSettle() waits for all animations to complete.
      await tester.pumpAndSettle();

      /// Tests Listener class
      await testsStateListener01(tester);

      /// Preform integration first to set up
      /// WidgetsBinding.instance is IntegrationTestWidgetsFlutterBinding
      await integrationTesting(tester);

      /// Reset the counter to zero on Page 1
      await resetPage1Count(tester);

      /// Testing the StateMVC, ControllerMVC, and ListenerMVC
      await unitTesting(tester);
    },
  );
}