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samples/testing_app/test/home_test.dart

70 lines
2.3 KiB

// Copyright 2020 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:testing_app/models/favorites.dart';
import 'package:testing_app/screens/home.dart';
Widget createHomeScreen() => ChangeNotifierProvider<Favorites>(
create: (context) => Favorites(),
child: MaterialApp(
home: HomePage(),
),
);
void main() {
group('Home Page Widget Tests', () {
testWidgets('Testing if ListView shows up', (tester) async {
await tester.pumpWidget(createHomeScreen());
// Verify if ListView shows up.
expect(find.byType(ListView), findsOneWidget);
});
testWidgets('Testing Scrolling', (tester) async {
await tester.pumpWidget(createHomeScreen());
// Check if "Item 0" is present on the screen.
expect(find.text('Item 0'), findsOneWidget);
// Fling i.e scroll down.
await tester.fling(find.byType(ListView), Offset(0, -200), 3000);
await tester.pumpAndSettle();
// Check if "Item 0" disappeared.
expect(find.text('Item 0'), findsNothing);
});
testWidgets('Testing IconButtons', (tester) async {
await tester.pumpWidget(createHomeScreen());
// Check if any solid favorite icon is present.
expect(find.byIcon(Icons.favorite), findsNothing);
// Tap the first item's icon to add it to favorites.
await tester.tap(find.byIcon(Icons.favorite_border).first);
await tester.pumpAndSettle(Duration(seconds: 1));
// Verify if the appropriate message is shown.
expect(find.text('Added to favorites.'), findsOneWidget);
// Check if any solid favorite icon shows up.
expect(find.byIcon(Icons.favorite), findsWidgets);
// Tap the first item's icon which has filled icon to
// remove it from favorites.
await tester.tap(find.byIcon(Icons.favorite).first);
await tester.pumpAndSettle(Duration(seconds: 1));
// Verify if the appropriate message is shown.
expect(find.text('Removed from favorites.'), findsOneWidget);
// Check if the filled icon changes back to bordered icon.
expect(find.byIcon(Icons.favorite), findsNothing);
});
});
}