cea4aa9b7b
* the onStart callback will report the location of the pointer where it wins the gesture arena by default instead of the pointer down location. Fixes all tests related to changing this default value.
620 lines
19 KiB
Dart
620 lines
19 KiB
Dart
// Copyright 2017 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import 'dart:ui';
|
|
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
import 'package:flutter/rendering.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
import 'package:flutter/gestures.dart' show DragStartBehavior;
|
|
|
|
import 'semantics_tester.dart';
|
|
|
|
void main() {
|
|
SemanticsTester semantics;
|
|
|
|
setUp(() {
|
|
debugResetSemanticsIdCounter();
|
|
});
|
|
|
|
testWidgets('scrollable exposes the correct semantic actions', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester);
|
|
|
|
final List<Widget> textWidgets = <Widget>[];
|
|
for (int i = 0; i < 80; i++)
|
|
textWidgets.add(Text('$i'));
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView(children: textWidgets),
|
|
),
|
|
);
|
|
|
|
expect(semantics,includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollUp]));
|
|
|
|
await flingUp(tester);
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollUp, SemanticsAction.scrollDown]));
|
|
|
|
await flingDown(tester, repetitions: 2);
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollUp]));
|
|
|
|
await flingUp(tester, repetitions: 5);
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollDown]));
|
|
|
|
await flingDown(tester);
|
|
expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollUp, SemanticsAction.scrollDown]));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('showOnScreen works in scrollable', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
const double kItemHeight = 40.0;
|
|
|
|
final List<Widget> containers = <Widget>[];
|
|
for (int i = 0; i < 80; i++)
|
|
containers.add(MergeSemantics(child: Container(
|
|
height: kItemHeight,
|
|
child: Text('container $i', textDirection: TextDirection.ltr),
|
|
)));
|
|
|
|
final ScrollController scrollController = ScrollController(
|
|
initialScrollOffset: kItemHeight / 2,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView(
|
|
controller: scrollController,
|
|
children: containers,
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byWidget(containers.first)).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 5));
|
|
|
|
expect(scrollController.offset, 0.0);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('showOnScreen works with pinned app bar and sliver list', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
const double kItemHeight = 100.0;
|
|
const double kExpandedAppBarHeight = 56.0;
|
|
|
|
final List<Widget> containers = <Widget>[];
|
|
for (int i = 0; i < 80; i++)
|
|
containers.add(MergeSemantics(child: Container(
|
|
height: kItemHeight,
|
|
child: Text('container $i'),
|
|
)));
|
|
|
|
final ScrollController scrollController = ScrollController(
|
|
initialScrollOffset: kItemHeight / 2,
|
|
);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Localizations(
|
|
locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: Scrollable(
|
|
controller: scrollController,
|
|
viewportBuilder: (BuildContext context, ViewportOffset offset) {
|
|
return Viewport(
|
|
offset: offset,
|
|
slivers: <Widget>[
|
|
const SliverAppBar(
|
|
pinned: true,
|
|
expandedHeight: kExpandedAppBarHeight,
|
|
flexibleSpace: FlexibleSpaceBar(
|
|
title: Text('App Bar'),
|
|
),
|
|
),
|
|
SliverList(
|
|
delegate: SliverChildListDelegate(containers),
|
|
)
|
|
],
|
|
);
|
|
}),
|
|
),
|
|
),
|
|
));
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byWidget(containers.first)).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 5));
|
|
expect(tester.getTopLeft(find.byWidget(containers.first)).dy, kExpandedAppBarHeight);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('showOnScreen works with pinned app bar and individual slivers', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
const double kItemHeight = 100.0;
|
|
const double kExpandedAppBarHeight = 256.0;
|
|
|
|
|
|
final List<Widget> children = <Widget>[];
|
|
final List<Widget> slivers = List<Widget>.generate(30, (int i) {
|
|
final Widget child = MergeSemantics(
|
|
child: Container(
|
|
child: Text('Item $i'),
|
|
height: 72.0,
|
|
),
|
|
);
|
|
children.add(child);
|
|
return SliverToBoxAdapter(
|
|
child: child,
|
|
);
|
|
});
|
|
|
|
final ScrollController scrollController = ScrollController(
|
|
initialScrollOffset: 2.5 * kItemHeight,
|
|
);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: Localizations(
|
|
locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: Scrollable(
|
|
controller: scrollController,
|
|
viewportBuilder: (BuildContext context, ViewportOffset offset) {
|
|
return Viewport(
|
|
offset: offset,
|
|
slivers: <Widget>[
|
|
const SliverAppBar(
|
|
pinned: true,
|
|
expandedHeight: kExpandedAppBarHeight,
|
|
flexibleSpace: FlexibleSpaceBar(
|
|
title: Text('App Bar'),
|
|
),
|
|
),
|
|
]..addAll(slivers),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
));
|
|
|
|
expect(scrollController.offset, 2.5 * kItemHeight);
|
|
|
|
final int id0 = tester.renderObject(find.byWidget(children[0])).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(id0, SemanticsAction.showOnScreen);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 5));
|
|
expect(tester.getTopLeft(find.byWidget(children[0])).dy, kToolbarHeight);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('correct scrollProgress', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester);
|
|
|
|
final List<Widget> textWidgets = <Widget>[];
|
|
for (int i = 0; i < 80; i++)
|
|
textWidgets.add(Text('$i'));
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView(children: textWidgets),
|
|
));
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 0.0,
|
|
scrollExtentMax: 520.0,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
],
|
|
));
|
|
|
|
await flingUp(tester);
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 380.2,
|
|
scrollExtentMax: 520.0,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
],
|
|
));
|
|
|
|
await flingUp(tester);
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 520.0,
|
|
scrollExtentMax: 520.0,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollDown,
|
|
],
|
|
));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('correct scrollProgress for unbound', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester);
|
|
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView.builder(
|
|
dragStartBehavior: DragStartBehavior.down,
|
|
itemExtent: 20.0,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
return Text('entry $index');
|
|
},
|
|
),
|
|
));
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 0.0,
|
|
scrollExtentMax: double.infinity,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
],
|
|
));
|
|
|
|
await flingUp(tester);
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 380.2,
|
|
scrollExtentMax: double.infinity,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
],
|
|
));
|
|
|
|
await flingUp(tester);
|
|
|
|
expect(semantics, includesNodeWith(
|
|
scrollExtentMin: 0.0,
|
|
scrollPosition: 760.4,
|
|
scrollExtentMax: double.infinity,
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
],
|
|
));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('Semantics tree is populated mid-scroll', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester);
|
|
|
|
final List<Widget> children = <Widget>[];
|
|
for (int i = 0; i < 80; i++)
|
|
children.add(Container(
|
|
child: Text('Item $i'),
|
|
height: 40.0,
|
|
));
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView(children: children),
|
|
),
|
|
);
|
|
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(ListView)));
|
|
await gesture.moveBy(const Offset(0.0, -40.0));
|
|
await tester.pump();
|
|
|
|
expect(semantics, includesNodeWith(label: 'Item 1'));
|
|
expect(semantics, includesNodeWith(label: 'Item 2'));
|
|
expect(semantics, includesNodeWith(label: 'Item 3'));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('Can toggle semantics on, off, on without crash', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView(
|
|
children: List<Widget>.generate(40, (int i) {
|
|
return Container(
|
|
child: Text('item $i'),
|
|
height: 400.0,
|
|
);
|
|
}),
|
|
),
|
|
),
|
|
);
|
|
|
|
final TestSemantics expectedSemantics = TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics.rootChild(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.hasImplicitScrolling,
|
|
],
|
|
actions: <SemanticsAction>[SemanticsAction.scrollUp],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
label: r'item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: r'item 1',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.isHidden,
|
|
],
|
|
label: r'item 2',
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
);
|
|
|
|
// Start with semantics off.
|
|
expect(tester.binding.pipelineOwner.semanticsOwner, isNull);
|
|
|
|
// Semantics on
|
|
semantics = SemanticsTester(tester);
|
|
await tester.pumpAndSettle();
|
|
expect(tester.binding.pipelineOwner.semanticsOwner, isNotNull);
|
|
expect(semantics, hasSemantics(expectedSemantics, ignoreId: true, ignoreRect: true, ignoreTransform: true));
|
|
|
|
// Semantics off
|
|
semantics.dispose();
|
|
await tester.pumpAndSettle();
|
|
expect(tester.binding.pipelineOwner.semanticsOwner, isNull);
|
|
|
|
// Semantics on
|
|
semantics = SemanticsTester(tester);
|
|
await tester.pumpAndSettle();
|
|
expect(tester.binding.pipelineOwner.semanticsOwner, isNotNull);
|
|
expect(semantics, hasSemantics(expectedSemantics, ignoreId: true, ignoreRect: true, ignoreTransform: true));
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
group('showOnScreen', () {
|
|
|
|
const double kItemHeight = 100.0;
|
|
|
|
List<Widget> children;
|
|
ScrollController scrollController;
|
|
Widget widgetUnderTest;
|
|
|
|
setUp(() {
|
|
children = List<Widget>.generate(10, (int i) {
|
|
return MergeSemantics(
|
|
child: Container(
|
|
height: kItemHeight,
|
|
child: Text('container $i'),
|
|
),
|
|
);
|
|
});
|
|
|
|
scrollController = ScrollController(
|
|
initialScrollOffset: kItemHeight / 2,
|
|
);
|
|
|
|
widgetUnderTest = Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Center(
|
|
child: Container(
|
|
height: 2 * kItemHeight,
|
|
child: ListView(
|
|
controller: scrollController,
|
|
children: children,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
});
|
|
|
|
testWidgets('brings item above leading edge to leading edge', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byWidget(children.first)).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, 0.0);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('brings item below trailing edge to trailing edge', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byWidget(children[2])).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, kItemHeight);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('does not change position of items already fully on-screen', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byWidget(children[1])).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, kItemHeight / 2);
|
|
|
|
semantics.dispose();
|
|
});
|
|
});
|
|
|
|
group('showOnScreen with negative children', () {
|
|
const double kItemHeight = 100.0;
|
|
|
|
List<Widget> children;
|
|
ScrollController scrollController;
|
|
Widget widgetUnderTest;
|
|
|
|
setUp(() {
|
|
final Key center = GlobalKey();
|
|
|
|
children = List<Widget>.generate(10, (int i) {
|
|
return SliverToBoxAdapter(
|
|
key: i == 5 ? center : null,
|
|
child: MergeSemantics(
|
|
key: ValueKey<int>(i),
|
|
child: Container(
|
|
height: kItemHeight,
|
|
child: Text('container $i'),
|
|
),
|
|
),
|
|
);
|
|
});
|
|
|
|
scrollController = ScrollController(
|
|
initialScrollOffset: -2.5 * kItemHeight,
|
|
);
|
|
|
|
// 'container 0' is at offset -500
|
|
// 'container 1' is at offset -400
|
|
// 'container 2' is at offset -300
|
|
// 'container 3' is at offset -200
|
|
// 'container 4' is at offset -100
|
|
// 'container 5' is at offset 0
|
|
|
|
widgetUnderTest = Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Center(
|
|
child: Container(
|
|
height: 2 * kItemHeight,
|
|
child: Scrollable(
|
|
controller: scrollController,
|
|
viewportBuilder: (BuildContext context, ViewportOffset offset) {
|
|
return Viewport(
|
|
cacheExtent: 0.0,
|
|
offset: offset,
|
|
center: center,
|
|
slivers: children
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
});
|
|
|
|
testWidgets('brings item above leading edge to leading edge', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, -250.0);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byKey(const ValueKey<int>(2))).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, -300.0);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('brings item below trailing edge to trailing edge', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, -250.0);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byKey(const ValueKey<int>(4))).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, -200.0);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('does not change position of items already fully on-screen', (WidgetTester tester) async {
|
|
semantics = SemanticsTester(tester); // enables semantics tree generation
|
|
|
|
await tester.pumpWidget(widgetUnderTest);
|
|
|
|
expect(scrollController.offset, -250.0);
|
|
|
|
final int firstContainerId = tester.renderObject(find.byKey(const ValueKey<int>(3))).debugSemantics.id;
|
|
tester.binding.pipelineOwner.semanticsOwner.performAction(firstContainerId, SemanticsAction.showOnScreen);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(scrollController.offset, -250.0);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
Future<void> flingUp(WidgetTester tester, { int repetitions = 1 }) => fling(tester, const Offset(0.0, -200.0), repetitions);
|
|
|
|
Future<void> flingDown(WidgetTester tester, { int repetitions = 1 }) => fling(tester, const Offset(0.0, 200.0), repetitions);
|
|
|
|
Future<void> flingRight(WidgetTester tester, { int repetitions = 1 }) => fling(tester, const Offset(200.0, 0.0), repetitions);
|
|
|
|
Future<void> flingLeft(WidgetTester tester, { int repetitions = 1 }) => fling(tester, const Offset(-200.0, 0.0), repetitions);
|
|
|
|
Future<void> fling(WidgetTester tester, Offset offset, int repetitions) async {
|
|
while (repetitions-- > 0) {
|
|
await tester.fling(find.byType(ListView), offset, 1000.0);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 5));
|
|
}
|
|
}
|