f054f5aa09
Fixes https://github.com/flutter/flutter/issues/59413 This relocates `mock_canvas.dart` and `recording_canvas.dart` from `flutter/test/rendering` to `flutter_test`. The testing functionality afforded by mock_canvas should be available to everyone, not just the framework. :) mock_canvas.dart needed a bit of cleanup - things like formatting and super parameters.
385 lines
11 KiB
Dart
385 lines
11 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/rendering.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.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.renderObjectList<RenderBox>(find.byType(SizedBox)).map<Offset>(
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(RenderBox target) => target.localToGlobal(Offset.zero),
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).toList();
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expect(testAnswers, equals(answerKey));
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final String foundText =
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tester.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, equals(const Size(800.0, 600.0)));
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verify(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 400.0),
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], 'ab');
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await test(tester, 200.0);
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verify(tester, <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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], 'ab');
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await test(tester, 600.0);
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verify(tester, <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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], 'bc');
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await test(tester, 900.0);
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verify(tester, <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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], 'cd');
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await test(tester, 200.0);
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verify(tester, <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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], 'ab');
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});
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testWidgets('Viewport+SliverBlock basic test with constant SliverChildListDelegate', (WidgetTester tester) async {
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await testWithConstChildDelegate(tester, 0.0);
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expect(tester.renderObject<RenderBox>(find.byType(Viewport)).size, equals(const Size(800.0, 600.0)));
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verify(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 400.0),
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], 'ab');
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await testWithConstChildDelegate(tester, 200.0);
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verify(tester, <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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], 'ab');
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await testWithConstChildDelegate(tester, 600.0);
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verify(tester, <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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], 'bc');
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await testWithConstChildDelegate(tester, 900.0);
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verify(tester, <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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], 'cd');
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await testWithConstChildDelegate(tester, 200.0);
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verify(tester, <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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], 'ab');
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});
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testWidgets('Viewport with GlobalKey reparenting', (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(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 251.0),
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const Offset(0.0, 503.0),
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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(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 253.0),
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const Offset(0.0, 504.0),
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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(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 251.0),
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const Offset(0.0, 504.0),
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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(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 251.0),
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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(tester, <Offset>[
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Offset.zero,
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const Offset(0.0, 251.0),
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const Offset(0.0, 504.0),
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], 'acb');
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});
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testWidgets('Viewport overflow clipping of SliverToBoxAdapter', (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', (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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