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98 lines
3.4 KiB
Dart
98 lines
3.4 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_api_samples/material/navigation_rail/navigation_rail.1.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Navigation rail updates destination on tap',
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(WidgetTester tester) async {
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await tester.pumpWidget(
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const example.MyApp(),
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);
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final NavigationRail navigationRailWidget =
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tester.firstWidget(find.byType(NavigationRail));
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/// NavigationRailDestinations must be rendered
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expect(find.text('First'), findsOneWidget);
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expect(find.text('Second'), findsOneWidget);
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expect(find.text('Third'), findsOneWidget);
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/// initial index must be zero
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expect(navigationRailWidget.selectedIndex, 0);
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/// switch to second tab
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await tester.tap(find.text('Second'));
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await tester.pumpAndSettle();
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expect(find.text('selectedIndex: 1'), findsOneWidget);
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/// switch to third tab
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await tester.tap(find.text('Third'));
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await tester.pumpAndSettle();
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expect(find.text('selectedIndex: 2'), findsOneWidget);
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});
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testWidgets('Navigation rail updates label type', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.MyApp(),
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);
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// initial label type set to all.
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expect(find.text('Label type: all'), findsOneWidget);
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// switch to selected label type
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await tester.tap(find.widgetWithText(ElevatedButton, 'Selected'));
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await tester.pumpAndSettle();
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expect(find.text('Label type: selected'), findsOneWidget);
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// switch to none label type
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await tester.tap(find.widgetWithText(ElevatedButton, 'None'));
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await tester.pumpAndSettle();
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expect(find.text('Label type: none'), findsOneWidget);
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});
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testWidgets('Navigation rail updates group alignment', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.MyApp(),
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);
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// initial group alignment set top top.
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expect(find.text('Group alignment: -1.0'), findsOneWidget);
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// switch to center alignment
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await tester.tap(find.widgetWithText(ElevatedButton, 'Center'));
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await tester.pumpAndSettle();
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expect(find.text('Group alignment: 0.0'), findsOneWidget);
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// switch to bottom alignment
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await tester.tap(find.widgetWithText(ElevatedButton, 'Bottom'));
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await tester.pumpAndSettle();
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expect(find.text('Group alignment: 1.0'), findsOneWidget);
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});
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testWidgets('Navigation rail shows leading/trailing widgets', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.MyApp(),
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);
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// Initially leading/trailing widgets are hidden.
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expect(find.byType(FloatingActionButton), findsNothing);
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expect(find.byType(IconButton), findsNothing);
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// Tap to show leading Widget.
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await tester.tap(find.widgetWithText(ElevatedButton, 'Show Leading'));
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await tester.pumpAndSettle();
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expect(find.byType(FloatingActionButton), findsOneWidget);
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expect(find.byType(IconButton), findsNothing);
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// Tap to show trailing Widget.
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await tester.tap(find.widgetWithText(ElevatedButton, 'Show Trailing'));
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await tester.pumpAndSettle();
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expect(find.byType(FloatingActionButton), findsOneWidget);
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expect(find.byType(IconButton), findsOneWidget);
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});
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}
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