78d35391ce
Previously, we passed widgets up the hierarchy to display them in the overlay, but that breaks the change propagation logic because those widgets won't get rebuilt. Now we pass WidgetBuilders instead, which can be rebuilt when the overlay rebuilds. Fixes #1913
119 lines
3.5 KiB
Dart
119 lines
3.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:test/test.dart';
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import 'widget_tester.dart';
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class TestOverlayRoute extends OverlayRoute {
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List<WidgetBuilder> get builders => <WidgetBuilder>[ _build ];
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Widget _build(BuildContext context) => new Text('Overlay');
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}
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bool _isOnStage(Element element) {
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expect(element, isNotNull);
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bool result = true;
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element.visitAncestorElements((Element ancestor) {
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if (ancestor.widget is OffStage) {
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result = false;
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return false;
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}
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return true;
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});
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return result;
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}
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class _IsOnStage extends Matcher {
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const _IsOnStage();
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bool matches(item, Map matchState) => _isOnStage(item);
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Description describe(Description description) => description.add('onstage');
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}
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class _IsOffStage extends Matcher {
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const _IsOffStage();
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bool matches(item, Map matchState) => !_isOnStage(item);
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Description describe(Description description) => description.add('offstage');
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}
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const Matcher isOnStage = const _IsOnStage();
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const Matcher isOffStage = const _IsOffStage();
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void main() {
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test('Can pop ephemeral route without black flash', () {
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testWidgets((WidgetTester tester) {
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GlobalKey containerKey = new GlobalKey();
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final Map<String, RouteBuilder> routes = <String, RouteBuilder>{
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'/': (_) => new Container(key: containerKey, child: new Text('Home')),
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'/settings': (_) => new Container(child: new Text('Settings')),
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};
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tester.pumpWidget(new MaterialApp(routes: routes));
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expect(tester.findText('Home'), isOnStage);
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expect(tester.findText('Settings'), isNull);
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expect(tester.findText('Overlay'), isNull);
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NavigatorState navigator = Navigator.of(containerKey.currentContext);
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navigator.pushNamed('/settings');
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tester.pump();
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expect(tester.findText('Home'), isOnStage);
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expect(tester.findText('Settings'), isOffStage);
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expect(tester.findText('Overlay'), isNull);
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tester.pump(const Duration(milliseconds: 16));
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expect(tester.findText('Home'), isOnStage);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isNull);
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tester.pump(const Duration(seconds: 1));
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expect(tester.findText('Home'), isNull);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isNull);
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navigator.push(new TestOverlayRoute());
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tester.pump();
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expect(tester.findText('Home'), isNull);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isOnStage);
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tester.pump(const Duration(seconds: 1));
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expect(tester.findText('Home'), isNull);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isOnStage);
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navigator.pop();
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tester.pump();
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expect(tester.findText('Home'), isNull);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isNull);
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tester.pump(const Duration(seconds: 1));
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expect(tester.findText('Home'), isNull);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isNull);
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navigator.pop();
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tester.pump();
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expect(tester.findText('Home'), isOnStage);
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expect(tester.findText('Settings'), isOnStage);
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expect(tester.findText('Overlay'), isNull);
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tester.pump(const Duration(seconds: 1));
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expect(tester.findText('Home'), isOnStage);
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expect(tester.findText('Settings'), isNull);
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expect(tester.findText('Overlay'), isNull);
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});
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});
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}
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