// Copyright 2017 The Chromium Authors. 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:sample_catalog/tabbed_app_bar.dart' as tabbed_app_bar_sample; final int choiceCount = tabbed_app_bar_sample.choices.length; IconData iconAt(int index) => tabbed_app_bar_sample.choices[index].icon; Finder findChoiceCard(IconData icon) { return find.descendant(of: find.byType(Card), matching: find.byIcon(icon)); } Finder findTab(IconData icon) { return find.descendant(of: find.byType(Tab), matching: find.byIcon(icon)); } void main() { testWidgets('tabbed_app_bar sample smoke test', (WidgetTester tester) async { tabbed_app_bar_sample.main(); await tester.pump(); // Tap on each tab, verify that a Card with the expected icon appears. for (int i = 0; i < choiceCount; i += 1) { await tester.tap(findTab(iconAt(i))); await tester.pumpAndSettle(); expect(findChoiceCard(iconAt(i)), findsOneWidget); // Scroll the tabBar by about one tab width await tester.drag(find.byType(TabBar), const Offset(-24.0, 0.0)); await tester.pumpAndSettle(); } }); }