mirror of
https://github.com/alibaba/flutter-go.git
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442 lines
12 KiB
Dart
442 lines
12 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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// Synced 2019-05-30T14:20:57.780106.
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import 'package:flutter_web_test/flutter_web_test.dart';
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import 'package:flutter_web/rendering.dart';
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import 'package:flutter_web/widgets.dart';
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import '../rendering/mock_canvas.dart';
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Future<void> test(WidgetTester tester, double offset) {
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return tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(offset),
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 400.0, child: Text('a')),
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SizedBox(height: 400.0, child: Text('b')),
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SizedBox(height: 400.0, child: Text('c')),
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SizedBox(height: 400.0, child: Text('d')),
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SizedBox(height: 400.0, child: Text('e')),
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]),
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),
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],
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),
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),
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);
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}
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Future<void> testWithConstChildDelegate(WidgetTester tester, double offset) {
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return tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(offset),
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slivers: const <Widget>[
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SliverList(
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delegate: SliverChildListDelegate.fixed(<Widget>[
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SizedBox(height: 400.0, child: Text('a')),
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SizedBox(height: 400.0, child: Text('b')),
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SizedBox(height: 400.0, child: Text('c')),
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SizedBox(height: 400.0, child: Text('d')),
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SizedBox(height: 400.0, child: Text('e')),
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]),
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),
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],
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),
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),
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);
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}
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void verify(WidgetTester tester, List<Offset> answerKey, String text) {
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final List<Offset> testAnswers = tester
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.renderObjectList<RenderBox>(find.byType(SizedBox))
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.map<Offset>(
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(RenderBox target) => target.localToGlobal(const Offset(0.0, 0.0)))
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.toList();
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expect(testAnswers, equals(answerKey));
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final String foundText = tester
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.widgetList<Text>(find.byType(Text))
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.map<String>((Text widget) => widget.data)
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.reduce((String value, String element) => value + element);
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expect(foundText, equals(text));
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}
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void main() {
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testWidgets('Viewport+SliverBlock basic test', (WidgetTester tester) async {
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await test(tester, 0.0);
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expect(tester.renderObject<RenderBox>(find.byType(Viewport)).size,
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equals(const Size(800.0, 600.0)));
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 400.0),
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],
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'ab');
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await test(tester, 200.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'ab');
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await test(tester, 600.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'bc');
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await test(tester, 900.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -100.0),
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const Offset(0.0, 300.0),
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],
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'cd');
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await test(tester, 200.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'ab');
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});
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testWidgets(
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'Viewport+SliverBlock basic test with constant SliverChildListDelegate',
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(WidgetTester tester) async {
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await testWithConstChildDelegate(tester, 0.0);
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expect(tester.renderObject<RenderBox>(find.byType(Viewport)).size,
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equals(const Size(800.0, 600.0)));
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 400.0),
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],
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'ab');
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await testWithConstChildDelegate(tester, 200.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'ab');
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await testWithConstChildDelegate(tester, 600.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'bc');
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await testWithConstChildDelegate(tester, 900.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -100.0),
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const Offset(0.0, 300.0),
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],
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'cd');
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await testWithConstChildDelegate(tester, 200.0);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, -200.0),
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const Offset(0.0, 200.0),
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],
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'ab');
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});
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testWidgets('Viewport with GlobalKey reparenting',
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(WidgetTester tester) async {
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final Key key1 = GlobalKey();
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final ViewportOffset offset = ViewportOffset.zero();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: offset,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(<Widget>[
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const SizedBox(height: 251.0, child: Text('a')),
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const SizedBox(height: 252.0, child: Text('b')),
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SizedBox(key: key1, height: 253.0, child: const Text('c')),
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]),
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),
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],
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),
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),
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);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 251.0),
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const Offset(0.0, 503.0),
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],
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'abc');
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: offset,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(<Widget>[
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SizedBox(key: key1, height: 253.0, child: const Text('c')),
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const SizedBox(height: 251.0, child: Text('a')),
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const SizedBox(height: 252.0, child: Text('b')),
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]),
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),
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],
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),
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),
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);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 253.0),
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const Offset(0.0, 504.0),
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],
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'cab');
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: offset,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(<Widget>[
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const SizedBox(height: 251.0, child: Text('a')),
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SizedBox(key: key1, height: 253.0, child: const Text('c')),
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const SizedBox(height: 252.0, child: Text('b')),
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]),
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),
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],
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),
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),
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);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 251.0),
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const Offset(0.0, 504.0),
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],
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'acb');
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: offset,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 251.0, child: Text('a')),
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SizedBox(height: 252.0, child: Text('b')),
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]),
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),
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],
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),
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),
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);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 251.0),
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],
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'ab');
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: offset,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(<Widget>[
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const SizedBox(height: 251.0, child: Text('a')),
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SizedBox(key: key1, height: 253.0, child: const Text('c')),
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const SizedBox(height: 252.0, child: Text('b')),
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]),
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),
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],
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),
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),
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);
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verify(
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tester,
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<Offset>[
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const Offset(0.0, 0.0),
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const Offset(0.0, 251.0),
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const Offset(0.0, 504.0),
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],
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'acb');
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});
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testWidgets('Viewport overflow clipping of SliverToBoxAdapter',
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(WidgetTester tester) async {
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.zero(),
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slivers: const <Widget>[
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SliverToBoxAdapter(
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child: SizedBox(height: 400.0, child: Text('a')),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), isNot(paints..clipRect()));
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(100.0),
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slivers: const <Widget>[
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SliverToBoxAdapter(
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child: SizedBox(height: 400.0, child: Text('a')),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(100.0),
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slivers: const <Widget>[
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SliverToBoxAdapter(
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child: SizedBox(height: 4000.0, child: Text('a')),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.zero(),
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slivers: const <Widget>[
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SliverToBoxAdapter(
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child: SizedBox(height: 4000.0, child: Text('a')),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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});
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testWidgets('Viewport overflow clipping of SliverBlock',
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(WidgetTester tester) async {
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.zero(),
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 400.0, child: Text('a')),
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]),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), isNot(paints..clipRect()));
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(100.0),
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 400.0, child: Text('a')),
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]),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.fixed(100.0),
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 4000.0, child: Text('a')),
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]),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Viewport(
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offset: ViewportOffset.zero(),
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(const <Widget>[
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SizedBox(height: 4000.0, child: Text('a')),
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]),
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),
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],
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),
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),
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);
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expect(find.byType(Viewport), paints..clipRect());
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});
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}
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