111 lines
3.1 KiB
Dart
111 lines
3.1 KiB
Dart
// Copyright 2016 The Chromium 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_test/flutter_test.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/widgets.dart';
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import 'package:test/test.dart';
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void main() {
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bool tapped;
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Widget tapTarget;
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setUp(() {
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tapped = false;
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tapTarget = new GestureDetector(
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onTap: () {
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tapped = true;
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},
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child: new SizedBox(
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width: 10.0,
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height: 10.0,
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child: new Text('target')
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)
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);
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});
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test('ModalBarrier prevents interactions with widgets behind it', () {
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testWidgets((WidgetTester tester) {
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Widget subject = new Stack(
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children: <Widget>[
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tapTarget,
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new ModalBarrier(dismissable: false),
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]
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);
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tester.pumpWidget(subject);
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tester.tap(tester.findText('target'));
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tester.pumpWidget(subject);
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expect(tapped, isFalse,
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reason: 'because the tap is prevented by ModalBarrier');
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});
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});
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test('ModalBarrier does not prevent interactions with widgets in front of it', () {
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testWidgets((WidgetTester tester) {
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Widget subject = new Stack(
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children: <Widget>[
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new ModalBarrier(dismissable: false),
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tapTarget,
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]
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);
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tester.pumpWidget(subject);
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tester.tap(tester.findText('target'));
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tester.pumpWidget(subject);
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expect(tapped, isTrue,
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reason: 'because the tap is not prevented by ModalBarrier');
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});
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});
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test('ModalBarrier pops the Navigator when dismissed', () {
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testWidgets((WidgetTester tester) {
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final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
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'/': (BuildContext context) => new FirstWidget(),
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'/modal': (BuildContext context) => new SecondWidget(),
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};
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tester.pumpWidget(new MaterialApp(routes: routes));
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// Initially the barrier is not visible
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expect(tester.findElementByKey(const ValueKey<String>('barrier')), isNull);
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// Tapping on X routes to the barrier
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tester.tap(tester.findText('X'));
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tester.pump(); // begin transition
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tester.pump(const Duration(seconds: 1)); // end transition
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// Tap on the barrier to dismiss it
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tester.tap(tester.findElementByKey(const ValueKey<String>('barrier')));
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tester.pump(); // begin transition
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tester.pump(const Duration(seconds: 1)); // end transition
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expect(tester.findElementByKey(const ValueKey<String>('barrier')), isNull,
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reason: 'because the barrier was dismissed');
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});
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});
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}
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class FirstWidget extends StatelessWidget {
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Widget build(BuildContext context) {
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return new GestureDetector(
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onTap: () {
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Navigator.pushNamed(context, '/modal');
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},
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child: new Container(
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child: new Text('X')
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)
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);
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}
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}
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class SecondWidget extends StatelessWidget {
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Widget build(BuildContext context) {
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return new ModalBarrier(
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key: const ValueKey<String>('barrier'),
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dismissable: true
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);
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}
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}
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