0d4b5ae122
Updated tests in dev, examples/api, and tests/widgets to ensure that they continue to pass when the default for `ThemeData.useMaterial3` is changed to true. This is the final set of changes required for https://github.com/flutter/flutter/issues/127064.
1399 lines
58 KiB
Dart
1399 lines
58 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 'dart:ui' as ui;
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/scheduler.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'semantics_tester.dart';
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Future<void> pumpTest(
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WidgetTester tester,
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TargetPlatform? platform, {
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bool scrollable = true,
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bool reverse = false,
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Set<LogicalKeyboardKey>? axisModifier,
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Axis scrollDirection = Axis.vertical,
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ScrollController? controller,
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bool enableMouseDrag = true,
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}) async {
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await tester.pumpWidget(MaterialApp(
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scrollBehavior: const NoScrollbarBehavior().copyWith(
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dragDevices: enableMouseDrag
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? <ui.PointerDeviceKind>{...ui.PointerDeviceKind.values}
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: null,
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pointerAxisModifiers: axisModifier,
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),
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theme: ThemeData(
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platform: platform,
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),
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home: CustomScrollView(
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controller: controller,
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reverse: reverse,
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scrollDirection: scrollDirection,
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physics: scrollable ? null : const NeverScrollableScrollPhysics(),
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slivers: <Widget>[
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SliverToBoxAdapter(child: SizedBox(
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height: scrollDirection == Axis.vertical ? 2000.0 : null,
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width: scrollDirection == Axis.horizontal ? 2000.0 : null,
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)),
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],
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),
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));
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await tester.pump(const Duration(seconds: 5)); // to let the theme animate
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}
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class NoScrollbarBehavior extends MaterialScrollBehavior {
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const NoScrollbarBehavior();
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@override
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Widget buildScrollbar(BuildContext context, Widget child, ScrollableDetails details) => child;
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}
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// Pump a nested scrollable. The outer scrollable contains a sliver of a
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// 300-pixel-long scrollable followed by a 2000-pixel-long content.
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Future<void> pumpDoubleScrollableTest(
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WidgetTester tester,
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TargetPlatform platform,
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) async {
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await tester.pumpWidget(MaterialApp(
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theme: ThemeData(
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platform: platform,
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),
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home: const CustomScrollView(
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slivers: <Widget>[
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SliverToBoxAdapter(
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child: SizedBox(
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height: 300,
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child: CustomScrollView(
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slivers: <Widget>[
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SliverToBoxAdapter(child: SizedBox(height: 2000.0)),
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],
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),
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),
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),
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SliverToBoxAdapter(child: SizedBox(height: 2000.0)),
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],
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),
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));
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await tester.pump(const Duration(seconds: 5)); // to let the theme animate
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}
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const double dragOffset = 200.0;
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double getScrollOffset(WidgetTester tester, {bool last = true}) {
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Finder viewportFinder = find.byType(Viewport);
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if (last) {
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viewportFinder = viewportFinder.last;
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}
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final RenderViewport viewport = tester.renderObject(viewportFinder);
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return viewport.offset.pixels;
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}
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double getScrollVelocity(WidgetTester tester) {
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final RenderViewport viewport = tester.renderObject(find.byType(Viewport));
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final ScrollPosition position = viewport.offset as ScrollPosition;
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return position.activity!.velocity;
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}
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void resetScrollOffset(WidgetTester tester) {
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final RenderViewport viewport = tester.renderObject(find.byType(Viewport));
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final ScrollPosition position = viewport.offset as ScrollPosition;
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position.jumpTo(0.0);
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}
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void main() {
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testWidgets('Flings on different platforms', (WidgetTester tester) async {
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await pumpTest(tester, TargetPlatform.android);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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expect(getScrollOffset(tester), dragOffset);
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await tester.pump(); // trigger fling
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expect(getScrollOffset(tester), dragOffset);
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await tester.pump(const Duration(seconds: 5));
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final double androidResult = getScrollOffset(tester);
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resetScrollOffset(tester);
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await pumpTest(tester, TargetPlatform.iOS);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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// Scroll starts ease into the scroll on iOS.
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expect(getScrollOffset(tester), moreOrLessEquals(197.16666666666669));
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await tester.pump(); // trigger fling
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expect(getScrollOffset(tester), moreOrLessEquals(197.16666666666669));
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await tester.pump(const Duration(seconds: 5));
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final double iOSResult = getScrollOffset(tester);
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resetScrollOffset(tester);
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await pumpTest(tester, TargetPlatform.macOS);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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// Scroll starts ease into the scroll on iOS.
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expect(getScrollOffset(tester), moreOrLessEquals(197.16666666666669));
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await tester.pump(); // trigger fling
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expect(getScrollOffset(tester), moreOrLessEquals(197.16666666666669));
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await tester.pump(const Duration(seconds: 5));
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final double macOSResult = getScrollOffset(tester);
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expect(macOSResult, lessThan(androidResult)); // macOS is slipperier than Android
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expect(androidResult, lessThan(iOSResult)); // iOS is slipperier than Android
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expect(macOSResult, lessThan(iOSResult)); // iOS is slipperier than macOS
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});
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testWidgets('Holding scroll', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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await tester.drag(find.byType(Scrollable), const Offset(0.0, 200.0), touchSlopY: 0.0);
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expect(getScrollOffset(tester), -200.0);
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await tester.pump(); // trigger ballistic
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await tester.pump(const Duration(milliseconds: 10));
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expect(getScrollOffset(tester), greaterThan(-200.0));
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expect(getScrollOffset(tester), lessThan(0.0));
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final double heldPosition = getScrollOffset(tester);
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// Hold and let go while in overscroll.
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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expect(await tester.pumpAndSettle(), 1);
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expect(getScrollOffset(tester), heldPosition);
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await gesture.up();
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// Once the hold is let go, it should still snap back to origin.
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expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 3);
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expect(getScrollOffset(tester), 0.0);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Repeated flings builds momentum', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger fling
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await tester.pump(const Duration(milliseconds: 10));
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// Repeat the exact same motion.
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump();
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// On iOS, the velocity will be larger than the velocity of the last fling by a
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// non-trivial amount.
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expect(getScrollVelocity(tester), greaterThan(1100.0));
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Repeated flings do not build momentum on Android', (WidgetTester tester) async {
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await pumpTest(tester, TargetPlatform.android);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger fling
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await tester.pump(const Duration(milliseconds: 10));
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// Repeat the exact same motion.
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump();
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// On Android, there is no momentum build. The final velocity is the same as the
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// velocity of the last fling.
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expect(getScrollVelocity(tester), moreOrLessEquals(1000.0));
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});
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testWidgets('A slower final fling does not apply carried momentum', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger fling
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await tester.pump(const Duration(milliseconds: 10));
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// Repeat the exact same motion to build momentum.
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger the second fling
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await tester.pump(const Duration(milliseconds: 10));
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// Make a final fling that is much slower.
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 200.0);
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await tester.pump(); // trigger the third fling
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await tester.pump(const Duration(milliseconds: 10));
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// expect that there is no carried velocity
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expect(getScrollVelocity(tester), lessThan(200.0));
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('No iOS/macOS momentum build with flings in opposite directions', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger fling
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await tester.pump(const Duration(milliseconds: 10));
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// Repeat the exact same motion in the opposite direction.
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await tester.fling(find.byType(Scrollable), const Offset(0.0, dragOffset), 1000.0);
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await tester.pump();
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// The only applied velocity to the scrollable is the second fling that was in the
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// opposite direction.
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expect(getScrollVelocity(tester), -1000.0);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('No iOS/macOS momentum kept on hold gestures', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
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await tester.pump(); // trigger fling
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await tester.pump(const Duration(milliseconds: 10));
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expect(getScrollVelocity(tester), greaterThan(0.0));
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await tester.pump(const Duration(milliseconds: 40));
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await gesture.up();
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// After a hold longer than 2 frames, previous velocity is lost.
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expect(getScrollVelocity(tester), 0.0);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Drags creeping unaffected on Android', (WidgetTester tester) async {
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await pumpTest(tester, TargetPlatform.android);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await gesture.moveBy(const Offset(0.0, -0.5));
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expect(getScrollOffset(tester), 0.5);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 10));
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expect(getScrollOffset(tester), 1.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 20));
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expect(getScrollOffset(tester), 1.5);
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});
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testWidgets('Drags creeping must break threshold on iOS/macOS', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await gesture.moveBy(const Offset(0.0, -0.5));
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expect(getScrollOffset(tester), 0.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 10));
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expect(getScrollOffset(tester), 0.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 20));
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expect(getScrollOffset(tester), 0.0);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 30));
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// Now -2.5 in total.
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expect(getScrollOffset(tester), 0.0);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 40));
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// Now -3.5, just reached threshold.
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expect(getScrollOffset(tester), 0.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 50));
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// -0.5 over threshold transferred.
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expect(getScrollOffset(tester), 0.5);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Big drag over threshold magnitude preserved on iOS/macOS', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await gesture.moveBy(const Offset(0.0, -30.0));
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// No offset lost from threshold.
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expect(getScrollOffset(tester), 30.0);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Slow threshold breaks are attenuated on iOS/macOS', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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// This is a typical 'hesitant' iOS scroll start.
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await gesture.moveBy(const Offset(0.0, -10.0));
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expect(getScrollOffset(tester), moreOrLessEquals(1.1666666666666667));
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await gesture.moveBy(const Offset(0.0, -10.0), timeStamp: const Duration(milliseconds: 20));
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// Subsequent motions unaffected.
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expect(getScrollOffset(tester), moreOrLessEquals(11.16666666666666673));
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Small continuing motion preserved on iOS/macOS', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await gesture.moveBy(const Offset(0.0, -30.0)); // Break threshold.
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expect(getScrollOffset(tester), 30.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 20));
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expect(getScrollOffset(tester), 30.5);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 40));
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expect(getScrollOffset(tester), 31.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 60));
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expect(getScrollOffset(tester), 31.5);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Motion stop resets threshold on iOS/macOS', (WidgetTester tester) async {
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await pumpTest(tester, debugDefaultTargetPlatformOverride);
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final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true));
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await gesture.moveBy(const Offset(0.0, -30.0)); // Break threshold.
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expect(getScrollOffset(tester), 30.0);
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await gesture.moveBy(const Offset(0.0, -0.5), timeStamp: const Duration(milliseconds: 20));
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expect(getScrollOffset(tester), 30.5);
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await gesture.moveBy(Offset.zero, timeStamp: const Duration(milliseconds: 21));
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// Stationary too long, threshold reset.
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await gesture.moveBy(Offset.zero, timeStamp: const Duration(milliseconds: 120));
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 140));
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expect(getScrollOffset(tester), 30.5);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 150));
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expect(getScrollOffset(tester), 30.5);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 160));
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expect(getScrollOffset(tester), 30.5);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 170));
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// New threshold broken.
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expect(getScrollOffset(tester), 31.5);
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await gesture.moveBy(const Offset(0.0, -1.0), timeStamp: const Duration(milliseconds: 180));
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expect(getScrollOffset(tester), 32.5);
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}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
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testWidgets('Scroll pointer signals are handled on Fuchsia', (WidgetTester tester) async {
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await pumpTest(tester, TargetPlatform.fuchsia);
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final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
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final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
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// Create a hover event so that |testPointer| has a location when generating the scroll.
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testPointer.hover(scrollEventLocation);
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
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expect(getScrollOffset(tester), 20.0);
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// Pointer signals should not cause overscroll.
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, -30.0)));
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expect(getScrollOffset(tester), 0.0);
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});
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testWidgets('Scroll pointer signals are handled when there is competition', (WidgetTester tester) async {
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// This is a regression test. When there are multiple scrollables listening
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// to the same event, for example when scrollables are nested, there used
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// to be exceptions at scrolling events.
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await pumpDoubleScrollableTest(tester, TargetPlatform.fuchsia);
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final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport).last);
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final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
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// Create a hover event so that |testPointer| has a location when generating the scroll.
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testPointer.hover(scrollEventLocation);
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
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expect(getScrollOffset(tester), 20.0);
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// Pointer signals should not cause overscroll.
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, -30.0)));
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expect(getScrollOffset(tester), 0.0);
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});
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testWidgets('Scroll pointer signals are ignored when scrolling is disabled', (WidgetTester tester) async {
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await pumpTest(tester, TargetPlatform.fuchsia, scrollable: false);
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final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
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final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
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// Create a hover event so that |testPointer| has a location when generating the scroll.
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testPointer.hover(scrollEventLocation);
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
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expect(getScrollOffset(tester), 0.0);
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});
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testWidgets('Holding scroll and Scroll pointer signal will update ScrollDirection.forward / ScrollDirection.reverse', (WidgetTester tester) async {
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ScrollDirection? lastUserScrollingDirection;
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final ScrollController controller = ScrollController();
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await pumpTest(tester, TargetPlatform.fuchsia, controller: controller);
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controller.addListener(() {
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if (controller.position.userScrollDirection != ScrollDirection.idle) {
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lastUserScrollingDirection = controller.position.userScrollDirection;
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}
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});
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await tester.drag(find.byType(Scrollable), const Offset(0.0, -20.0), touchSlopY: 0.0);
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expect(lastUserScrollingDirection, ScrollDirection.reverse);
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final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
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final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
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// Create a hover event so that |testPointer| has a location when generating the scroll.
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testPointer.hover(scrollEventLocation);
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await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
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expect(lastUserScrollingDirection, ScrollDirection.reverse);
|
|
|
|
await tester.drag(find.byType(Scrollable), const Offset(0.0, 20.0), touchSlopY: 0.0);
|
|
|
|
expect(lastUserScrollingDirection, ScrollDirection.forward);
|
|
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, -20.0)));
|
|
|
|
expect(lastUserScrollingDirection, ScrollDirection.forward);
|
|
});
|
|
|
|
|
|
testWidgets('Scrolls in correct direction when scroll axis is reversed', (WidgetTester tester) async {
|
|
await pumpTest(tester, TargetPlatform.fuchsia, reverse: true);
|
|
|
|
final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
// Create a hover event so that |testPointer| has a location when generating the scroll.
|
|
testPointer.hover(scrollEventLocation);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, -20.0)));
|
|
|
|
expect(getScrollOffset(tester), 20.0);
|
|
});
|
|
|
|
testWidgets('Scrolls horizontally when shift is pressed by default', (WidgetTester tester) async {
|
|
await pumpTest(
|
|
tester,
|
|
debugDefaultTargetPlatformOverride,
|
|
scrollDirection: Axis.horizontal,
|
|
);
|
|
|
|
final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
// Create a hover event so that |testPointer| has a location when generating the scroll.
|
|
testPointer.hover(scrollEventLocation);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await tester.sendKeyDownEvent(LogicalKeyboardKey.shift);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input flipped to horizontal and accepted.
|
|
expect(getScrollOffset(tester), 20.0);
|
|
await tester.sendKeyUpEvent(LogicalKeyboardKey.shift);
|
|
await tester.pump();
|
|
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 20.0);
|
|
}, variant: TargetPlatformVariant.all());
|
|
|
|
testWidgets('Scroll axis is not flipped for trackpad', (WidgetTester tester) async {
|
|
await pumpTest(
|
|
tester,
|
|
debugDefaultTargetPlatformOverride,
|
|
scrollDirection: Axis.horizontal,
|
|
);
|
|
|
|
final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.trackpad);
|
|
// Create a hover event so that |testPointer| has a location when generating the scroll.
|
|
testPointer.hover(scrollEventLocation);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await tester.sendKeyDownEvent(LogicalKeyboardKey.shift);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not flipped.
|
|
expect(getScrollOffset(tester), 0.0);
|
|
await tester.sendKeyUpEvent(LogicalKeyboardKey.shift);
|
|
await tester.pump();
|
|
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 0.0);
|
|
}, variant: TargetPlatformVariant.all());
|
|
|
|
testWidgets('Scrolls horizontally when custom key is pressed', (WidgetTester tester) async {
|
|
await pumpTest(
|
|
tester,
|
|
debugDefaultTargetPlatformOverride,
|
|
scrollDirection: Axis.horizontal,
|
|
axisModifier: <LogicalKeyboardKey>{ LogicalKeyboardKey.altLeft },
|
|
);
|
|
|
|
final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
// Create a hover event so that |testPointer| has a location when generating the scroll.
|
|
testPointer.hover(scrollEventLocation);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await tester.sendKeyDownEvent(LogicalKeyboardKey.altLeft);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input flipped to horizontal and accepted.
|
|
expect(getScrollOffset(tester), 20.0);
|
|
await tester.sendKeyUpEvent(LogicalKeyboardKey.altLeft);
|
|
await tester.pump();
|
|
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 20.0);
|
|
}, variant: TargetPlatformVariant.all());
|
|
|
|
testWidgets('Still scrolls horizontally when other keys are pressed at the same time', (WidgetTester tester) async {
|
|
await pumpTest(
|
|
tester,
|
|
debugDefaultTargetPlatformOverride,
|
|
scrollDirection: Axis.horizontal,
|
|
axisModifier: <LogicalKeyboardKey>{ LogicalKeyboardKey.altLeft },
|
|
);
|
|
|
|
final Offset scrollEventLocation = tester.getCenter(find.byType(Viewport));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
// Create a hover event so that |testPointer| has a location when generating the scroll.
|
|
testPointer.hover(scrollEventLocation);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await tester.sendKeyDownEvent(LogicalKeyboardKey.altLeft);
|
|
await tester.sendKeyDownEvent(LogicalKeyboardKey.space);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical flipped & accepted.
|
|
expect(getScrollOffset(tester), 20.0);
|
|
await tester.sendKeyUpEvent(LogicalKeyboardKey.altLeft);
|
|
await tester.sendKeyUpEvent(LogicalKeyboardKey.space);
|
|
await tester.pump();
|
|
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
// Vertical input not accepted
|
|
expect(getScrollOffset(tester), 20.0);
|
|
}, variant: TargetPlatformVariant.all());
|
|
|
|
group('setCanDrag to false with active drag gesture: ', () {
|
|
Future<void> pumpTestWidget(WidgetTester tester, { required bool canDrag }) {
|
|
return tester.pumpWidget(
|
|
MaterialApp(
|
|
home: CustomScrollView(
|
|
physics: canDrag ? const AlwaysScrollableScrollPhysics() : const NeverScrollableScrollPhysics(),
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(
|
|
child: SizedBox(
|
|
height: 2000,
|
|
child: GestureDetector(onTap: () {}),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
testWidgets('Hold does not disable user interaction', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/66816.
|
|
await pumpTestWidget(tester, canDrag: true);
|
|
final RenderIgnorePointer renderIgnorePointer = tester.renderObject<RenderIgnorePointer>(
|
|
find.descendant(of: find.byType(CustomScrollView), matching: find.byType(IgnorePointer)),
|
|
);
|
|
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Viewport)));
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
await pumpTestWidget(tester, canDrag: false);
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
await gesture.up();
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
});
|
|
|
|
testWidgets('Drag disables user interaction when recognized', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/66816.
|
|
await pumpTestWidget(tester, canDrag: true);
|
|
final RenderIgnorePointer renderIgnorePointer = tester.renderObject<RenderIgnorePointer>(
|
|
find.descendant(of: find.byType(CustomScrollView), matching: find.byType(IgnorePointer)),
|
|
);
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Viewport)));
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
await gesture.moveBy(const Offset(0, -100));
|
|
// Starts ignoring when the drag is recognized.
|
|
expect(renderIgnorePointer.ignoring, true);
|
|
|
|
await pumpTestWidget(tester, canDrag: false);
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
await gesture.up();
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
});
|
|
|
|
testWidgets('Ballistic disables user interaction until it stops', (WidgetTester tester) async {
|
|
await pumpTestWidget(tester, canDrag: true);
|
|
final RenderIgnorePointer renderIgnorePointer = tester.renderObject<RenderIgnorePointer>(
|
|
find.descendant(of: find.byType(CustomScrollView), matching: find.byType(IgnorePointer)),
|
|
);
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
|
|
// Starts ignoring when the drag is recognized.
|
|
await tester.fling(find.byType(Scrollable), const Offset(0, -100), 1000);
|
|
expect(renderIgnorePointer.ignoring, true);
|
|
await tester.pump();
|
|
|
|
// When the activity ends we should stop ignoring pointers.
|
|
await tester.pumpAndSettle();
|
|
expect(renderIgnorePointer.ignoring, false);
|
|
});
|
|
});
|
|
|
|
testWidgets('Can recommendDeferredLoadingForContext - animation', (WidgetTester tester) async {
|
|
final List<String> widgetTracker = <String>[];
|
|
int cheapWidgets = 0;
|
|
int expensiveWidgets = 0;
|
|
final ScrollController controller = ScrollController();
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView.builder(
|
|
controller: controller,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
if (Scrollable.recommendDeferredLoadingForContext(context)) {
|
|
cheapWidgets += 1;
|
|
widgetTracker.add('cheap');
|
|
return const SizedBox(height: 50.0);
|
|
}
|
|
widgetTracker.add('expensive');
|
|
expensiveWidgets += 1;
|
|
return const SizedBox(height: 50.0);
|
|
},
|
|
),
|
|
));
|
|
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(expensiveWidgets, 17);
|
|
expect(cheapWidgets, 0);
|
|
|
|
// The position value here is different from the maximum velocity we will
|
|
// reach, which is controlled by a combination of curve, duration, and
|
|
// position.
|
|
// This is just meant to be a pretty good simulation. A linear curve
|
|
// with these same parameters will never back off on the velocity enough
|
|
// to reset here.
|
|
controller.animateTo(
|
|
5000,
|
|
duration: const Duration(seconds: 2),
|
|
curve: Curves.linear,
|
|
);
|
|
|
|
expect(expensiveWidgets, 17);
|
|
expect(widgetTracker.every((String type) => type == 'expensive'), true);
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 500));
|
|
expect(expensiveWidgets, 17);
|
|
expect(cheapWidgets, 25);
|
|
expect(widgetTracker.skip(17).every((String type) => type == 'cheap'), true);
|
|
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(expensiveWidgets, 22);
|
|
expect(cheapWidgets, 95);
|
|
expect(widgetTracker.skip(17).skip(25).take(70).every((String type) => type == 'cheap'), true);
|
|
expect(widgetTracker.skip(17).skip(25).skip(70).every((String type) => type == 'expensive'), true);
|
|
});
|
|
|
|
testWidgets('Can recommendDeferredLoadingForContext - ballistics', (WidgetTester tester) async {
|
|
int cheapWidgets = 0;
|
|
int expensiveWidgets = 0;
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView.builder(
|
|
itemBuilder: (BuildContext context, int index) {
|
|
if (Scrollable.recommendDeferredLoadingForContext(context)) {
|
|
cheapWidgets += 1;
|
|
return const SizedBox(height: 50.0);
|
|
}
|
|
expensiveWidgets += 1;
|
|
return SizedBox(key: ValueKey<String>('Box $index'), height: 50.0);
|
|
},
|
|
),
|
|
));
|
|
|
|
await tester.pumpAndSettle();
|
|
expect(find.byKey(const ValueKey<String>('Box 0')), findsOneWidget);
|
|
expect(find.byKey(const ValueKey<String>('Box 52')), findsNothing);
|
|
|
|
expect(expensiveWidgets, 17);
|
|
expect(cheapWidgets, 0);
|
|
|
|
// Getting the tester to simulate a life-like fling is difficult.
|
|
// Instead, just manually drive the activity with a ballistic simulation as
|
|
// if the user has flung the list.
|
|
Scrollable.of(find.byType(SizedBox).evaluate().first).position.activity!.delegate.goBallistic(4000);
|
|
|
|
await tester.pumpAndSettle();
|
|
expect(find.byKey(const ValueKey<String>('Box 0')), findsNothing);
|
|
expect(find.byKey(const ValueKey<String>('Box 52')), findsOneWidget);
|
|
|
|
expect(expensiveWidgets, 40);
|
|
expect(cheapWidgets, 21);
|
|
});
|
|
|
|
testWidgets('Can recommendDeferredLoadingForContext - override heuristic', (WidgetTester tester) async {
|
|
int cheapWidgets = 0;
|
|
int expensiveWidgets = 0;
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView.builder(
|
|
physics: SuperPessimisticScrollPhysics(),
|
|
itemBuilder: (BuildContext context, int index) {
|
|
if (Scrollable.recommendDeferredLoadingForContext(context)) {
|
|
cheapWidgets += 1;
|
|
return SizedBox(key: ValueKey<String>('Cheap box $index'), height: 50.0);
|
|
}
|
|
expensiveWidgets += 1;
|
|
return SizedBox(key: ValueKey<String>('Box $index'), height: 50.0);
|
|
},
|
|
),
|
|
));
|
|
await tester.pumpAndSettle();
|
|
|
|
final ScrollPosition position = Scrollable.of(find.byType(SizedBox).evaluate().first).position;
|
|
final SuperPessimisticScrollPhysics physics = position.physics as SuperPessimisticScrollPhysics;
|
|
|
|
expect(find.byKey(const ValueKey<String>('Box 0')), findsOneWidget);
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 52')), findsNothing);
|
|
|
|
expect(physics.count, 17);
|
|
expect(expensiveWidgets, 17);
|
|
expect(cheapWidgets, 0);
|
|
|
|
// Getting the tester to simulate a life-like fling is difficult.
|
|
// Instead, just manually drive the activity with a ballistic simulation as
|
|
// if the user has flung the list.
|
|
position.activity!.delegate.goBallistic(4000);
|
|
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.byKey(const ValueKey<String>('Box 0')), findsNothing);
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 52')), findsOneWidget);
|
|
|
|
expect(expensiveWidgets, 17);
|
|
expect(cheapWidgets, 44);
|
|
expect(physics.count, 44 + 17);
|
|
});
|
|
|
|
testWidgets('Can recommendDeferredLoadingForContext - override heuristic and always return true', (WidgetTester tester) async {
|
|
int cheapWidgets = 0;
|
|
int expensiveWidgets = 0;
|
|
await tester.pumpWidget(Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ListView.builder(
|
|
physics: const ExtraSuperPessimisticScrollPhysics(),
|
|
itemBuilder: (BuildContext context, int index) {
|
|
if (Scrollable.recommendDeferredLoadingForContext(context)) {
|
|
cheapWidgets += 1;
|
|
return SizedBox(key: ValueKey<String>('Cheap box $index'), height: 50.0);
|
|
}
|
|
expensiveWidgets += 1;
|
|
return SizedBox(key: ValueKey<String>('Box $index'), height: 50.0);
|
|
},
|
|
),
|
|
));
|
|
await tester.pumpAndSettle();
|
|
|
|
final ScrollPosition position = Scrollable.of(find.byType(SizedBox).evaluate().first).position;
|
|
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 0')), findsOneWidget);
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 52')), findsNothing);
|
|
|
|
expect(expensiveWidgets, 0);
|
|
expect(cheapWidgets, 17);
|
|
|
|
// Getting the tester to simulate a life-like fling is difficult.
|
|
// Instead, just manually drive the activity with a ballistic simulation as
|
|
// if the user has flung the list.
|
|
position.activity!.delegate.goBallistic(4000);
|
|
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 0')), findsNothing);
|
|
expect(find.byKey(const ValueKey<String>('Cheap box 52')), findsOneWidget);
|
|
|
|
expect(expensiveWidgets, 0);
|
|
expect(cheapWidgets, 61);
|
|
});
|
|
|
|
testWidgets('ensureVisible does not move PageViews', (WidgetTester tester) async {
|
|
final PageController controller = PageController();
|
|
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: PageView(
|
|
controller: controller,
|
|
children: List<ListView>.generate(
|
|
3,
|
|
(int pageIndex) {
|
|
return ListView(
|
|
key: Key('list_$pageIndex'),
|
|
children: List<Widget>.generate(
|
|
100,
|
|
(int listIndex) {
|
|
return Row(
|
|
children: <Widget>[
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_0'),
|
|
color: Colors.red,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_1'),
|
|
color: Colors.blue,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_2'),
|
|
color: Colors.green,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
],
|
|
);
|
|
},
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Finder targetMidRightPage0 = find.byKey(const Key('0_25_2'));
|
|
final Finder targetMidRightPage1 = find.byKey(const Key('1_25_2'));
|
|
final Finder targetMidLeftPage1 = find.byKey(const Key('1_25_0'));
|
|
|
|
expect(find.byKey(const Key('list_0')), findsOneWidget);
|
|
expect(find.byKey(const Key('list_1')), findsNothing);
|
|
expect(targetMidRightPage0, findsOneWidget);
|
|
expect(targetMidRightPage1, findsNothing);
|
|
expect(targetMidLeftPage1, findsNothing);
|
|
|
|
await tester.ensureVisible(targetMidRightPage0);
|
|
await tester.pumpAndSettle();
|
|
expect(targetMidRightPage0, findsOneWidget);
|
|
expect(targetMidRightPage1, findsNothing);
|
|
expect(targetMidLeftPage1, findsNothing);
|
|
|
|
controller.jumpToPage(1);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.byKey(const Key('list_0')), findsNothing);
|
|
expect(find.byKey(const Key('list_1')), findsOneWidget);
|
|
await tester.ensureVisible(targetMidRightPage1);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(targetMidRightPage0, findsNothing);
|
|
expect(targetMidRightPage1, findsOneWidget);
|
|
expect(targetMidLeftPage1, findsOneWidget);
|
|
|
|
await tester.ensureVisible(targetMidLeftPage1);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(targetMidRightPage0, findsNothing);
|
|
expect(targetMidRightPage1, findsOneWidget);
|
|
expect(targetMidLeftPage1, findsOneWidget);
|
|
});
|
|
|
|
testWidgets('ensureVisible does not move TabViews', (WidgetTester tester) async {
|
|
final TickerProvider vsync = TestTickerProvider();
|
|
final TabController controller = TabController(
|
|
length: 3,
|
|
vsync: vsync,
|
|
);
|
|
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: TabBarView(
|
|
controller: controller,
|
|
children: List<ListView>.generate(
|
|
3,
|
|
(int pageIndex) {
|
|
return ListView(
|
|
key: Key('list_$pageIndex'),
|
|
children: List<Widget>.generate(
|
|
100,
|
|
(int listIndex) {
|
|
return Row(
|
|
children: <Widget>[
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_0'),
|
|
color: Colors.red,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_1'),
|
|
color: Colors.blue,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
Container(
|
|
key: Key('${pageIndex}_${listIndex}_2'),
|
|
color: Colors.green,
|
|
width: 200,
|
|
height: 10,
|
|
),
|
|
],
|
|
);
|
|
},
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final Finder targetMidRightPage0 = find.byKey(const Key('0_25_2'));
|
|
final Finder targetMidRightPage1 = find.byKey(const Key('1_25_2'));
|
|
final Finder targetMidLeftPage1 = find.byKey(const Key('1_25_0'));
|
|
|
|
expect(find.byKey(const Key('list_0')), findsOneWidget);
|
|
expect(find.byKey(const Key('list_1')), findsNothing);
|
|
expect(targetMidRightPage0, findsOneWidget);
|
|
expect(targetMidRightPage1, findsNothing);
|
|
expect(targetMidLeftPage1, findsNothing);
|
|
|
|
await tester.ensureVisible(targetMidRightPage0);
|
|
await tester.pumpAndSettle();
|
|
expect(targetMidRightPage0, findsOneWidget);
|
|
expect(targetMidRightPage1, findsNothing);
|
|
expect(targetMidLeftPage1, findsNothing);
|
|
|
|
controller.index = 1;
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.byKey(const Key('list_0')), findsNothing);
|
|
expect(find.byKey(const Key('list_1')), findsOneWidget);
|
|
await tester.ensureVisible(targetMidRightPage1);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(targetMidRightPage0, findsNothing);
|
|
expect(targetMidRightPage1, findsOneWidget);
|
|
expect(targetMidLeftPage1, findsOneWidget);
|
|
|
|
await tester.ensureVisible(targetMidLeftPage1);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(targetMidRightPage0, findsNothing);
|
|
expect(targetMidRightPage1, findsOneWidget);
|
|
expect(targetMidLeftPage1, findsOneWidget);
|
|
});
|
|
|
|
testWidgets('PointerScroll on nested NeverScrollable ListView goes to outer Scrollable.', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/70948
|
|
final ScrollController outerController = ScrollController();
|
|
final ScrollController innerController = ScrollController();
|
|
await tester.pumpWidget(MaterialApp(
|
|
theme: ThemeData(useMaterial3: false),
|
|
home: Scaffold(
|
|
body: SingleChildScrollView(
|
|
controller: outerController,
|
|
child: Row(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: <Widget>[
|
|
Column(
|
|
children: <Widget>[
|
|
for (int i = 0; i < 100; i++)
|
|
Text('SingleChildScrollView $i'),
|
|
],
|
|
),
|
|
SizedBox(
|
|
height: 3000,
|
|
width: 400,
|
|
child: ListView.builder(
|
|
controller: innerController,
|
|
physics: const NeverScrollableScrollPhysics(),
|
|
itemCount: 100,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
return Text('Nested NeverScrollable ListView $index');
|
|
},
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
));
|
|
expect(outerController.position.pixels, 0.0);
|
|
expect(innerController.position.pixels, 0.0);
|
|
final Offset outerScrollable = tester.getCenter(find.text('SingleChildScrollView 3'));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
// Hover over the outer scroll view and create a pointer scroll.
|
|
testPointer.hover(outerScrollable);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 20.0)));
|
|
await tester.pump(const Duration(milliseconds: 250));
|
|
expect(outerController.position.pixels, 20.0);
|
|
expect(innerController.position.pixels, 0.0);
|
|
|
|
final Offset innerScrollable = tester.getCenter(find.text('Nested NeverScrollable ListView 20'));
|
|
// Hover over the inner scroll view and create a pointer scroll.
|
|
// This inner scroll view is not scrollable, and so the outer should scroll.
|
|
testPointer.hover(innerScrollable);
|
|
await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, -20.0)));
|
|
await tester.pump(const Duration(milliseconds: 250));
|
|
expect(outerController.position.pixels, 0.0);
|
|
expect(innerController.position.pixels, 0.0);
|
|
});
|
|
|
|
// Regression test for https://github.com/flutter/flutter/issues/71949
|
|
testWidgets('Zero offset pointer scroll should not trigger an assertion.', (WidgetTester tester) async {
|
|
final ScrollController controller = ScrollController();
|
|
Widget build(double height) {
|
|
return MaterialApp(
|
|
home: Scaffold(
|
|
body: SizedBox(
|
|
width: double.infinity,
|
|
height: height,
|
|
child: SingleChildScrollView(
|
|
controller: controller,
|
|
child: const SizedBox(
|
|
width: double.infinity,
|
|
height: 300.0,
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(build(200.0));
|
|
expect(controller.position.pixels, 0.0);
|
|
|
|
controller.jumpTo(100.0);
|
|
expect(controller.position.pixels, 100.0);
|
|
|
|
// Make the outer constraints larger that the scrollable widget is no longer able to scroll.
|
|
await tester.pumpWidget(build(300.0));
|
|
expect(controller.position.pixels, 100.0);
|
|
expect(controller.position.maxScrollExtent, 0.0);
|
|
|
|
// Hover over the scroll view and create a zero offset pointer scroll.
|
|
final Offset scrollable = tester.getCenter(find.byType(SingleChildScrollView));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
testPointer.hover(scrollable);
|
|
await tester.sendEventToBinding(testPointer.scroll(Offset.zero));
|
|
|
|
expect(tester.takeException(), null);
|
|
});
|
|
|
|
testWidgets('Accepts drag with unknown device kind by default', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/90912.
|
|
await tester.pumpWidget(
|
|
const MaterialApp(
|
|
home: CustomScrollView(
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(child: SizedBox(height: 2000.0)),
|
|
],
|
|
),
|
|
)
|
|
);
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true), kind: ui.PointerDeviceKind.unknown);
|
|
expect(getScrollOffset(tester), 0.0);
|
|
await gesture.moveBy(const Offset(0.0, -200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 200);
|
|
|
|
await gesture.moveBy(const Offset(0.0, 200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await gesture.removePointer();
|
|
await tester.pump();
|
|
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS, TargetPlatform.android }));
|
|
|
|
testWidgets('Does not scroll with mouse pointer drag when behavior is configured to ignore them', (WidgetTester tester) async {
|
|
await pumpTest(tester, debugDefaultTargetPlatformOverride, enableMouseDrag: false);
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true), kind: ui.PointerDeviceKind.mouse);
|
|
|
|
await gesture.moveBy(const Offset(0.0, -200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await gesture.moveBy(const Offset(0.0, 200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await gesture.removePointer();
|
|
await tester.pump();
|
|
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS, TargetPlatform.android }));
|
|
|
|
testWidgets("Support updating 'ScrollBehavior.dragDevices' at runtime", (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/111716
|
|
Widget buildFrame(Set<ui.PointerDeviceKind>? dragDevices) {
|
|
return MaterialApp(
|
|
scrollBehavior: const NoScrollbarBehavior().copyWith(
|
|
dragDevices: dragDevices,
|
|
),
|
|
home: ListView.builder(
|
|
itemCount: 1000,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
return Text('Item $index');
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
await tester.pumpWidget(buildFrame(<ui.PointerDeviceKind>{ui.PointerDeviceKind.mouse}));
|
|
await tester.drag(find.byType(Scrollable), const Offset(0.0, -100.0), kind: ui.PointerDeviceKind.mouse);
|
|
|
|
// Matching device should allow user scrolling.
|
|
expect(getScrollOffset(tester), 100.0);
|
|
|
|
await tester.pumpWidget(buildFrame(<ui.PointerDeviceKind>{ui.PointerDeviceKind.stylus}));
|
|
await tester.drag(find.byType(Scrollable), const Offset(0.0, -100.0), kind: ui.PointerDeviceKind.mouse);
|
|
|
|
// Non-matching device should not allow user scrolling.
|
|
expect(getScrollOffset(tester), 100.0);
|
|
|
|
await tester.drag(find.byType(Scrollable), const Offset(0.0, -100.0), kind: ui.PointerDeviceKind.stylus);
|
|
|
|
// Matching device should allow user scrolling.
|
|
expect(getScrollOffset(tester), 200.0);
|
|
});
|
|
|
|
testWidgets('Does scroll with mouse pointer drag when behavior is not configured to ignore them', (WidgetTester tester) async {
|
|
await pumpTest(tester, debugDefaultTargetPlatformOverride);
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true), kind: ui.PointerDeviceKind.mouse);
|
|
|
|
await gesture.moveBy(const Offset(0.0, -200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 200.0);
|
|
|
|
await gesture.moveBy(const Offset(0.0, 200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 0.0);
|
|
|
|
await gesture.removePointer();
|
|
await tester.pump();
|
|
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS, TargetPlatform.android }));
|
|
|
|
testWidgets('Updated content dimensions correctly reflect in semantics', (WidgetTester tester) async {
|
|
// Regression test for https://github.com/flutter/flutter/issues/40419.
|
|
final SemanticsHandle handle = tester.ensureSemantics();
|
|
final UniqueKey listView = UniqueKey();
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: TickerMode(
|
|
enabled: true,
|
|
child: ListView.builder(
|
|
key: listView,
|
|
itemCount: 100,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
return Text('Item $index');
|
|
},
|
|
),
|
|
),
|
|
));
|
|
|
|
SemanticsNode scrollableNode = tester.getSemantics(find.descendant(of: find.byKey(listView), matching: find.byType(RawGestureDetector)));
|
|
SemanticsNode? syntheticScrollableNode;
|
|
scrollableNode.visitChildren((SemanticsNode node) {
|
|
syntheticScrollableNode = node;
|
|
return true;
|
|
});
|
|
expect(syntheticScrollableNode!.hasFlag(ui.SemanticsFlag.hasImplicitScrolling), isTrue);
|
|
// Disabled the ticker mode to trigger didChangeDependencies on Scrollable.
|
|
// This can happen when a route is push or pop from top.
|
|
// It will reconstruct the scroll position and apply content dimensions.
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: TickerMode(
|
|
enabled: false,
|
|
child: ListView.builder(
|
|
key: listView,
|
|
itemCount: 100,
|
|
itemBuilder: (BuildContext context, int index) {
|
|
return Text('Item $index');
|
|
},
|
|
),
|
|
),
|
|
));
|
|
await tester.pump();
|
|
// The correct workflow will be the following:
|
|
// 1. _RenderScrollSemantics receives a new scroll position without content
|
|
// dimensions and creates a SemanticsNode without implicit scroll.
|
|
// 2. The content dimensions are applied to the scroll position during the
|
|
// layout phase, and the scroll position marks the semantics node of
|
|
// _RenderScrollSemantics dirty.
|
|
// 3. The _RenderScrollSemantics rebuilds its semantics node with implicit
|
|
// scroll.
|
|
scrollableNode = tester.getSemantics(find.descendant(of: find.byKey(listView), matching: find.byType(RawGestureDetector)));
|
|
syntheticScrollableNode = null;
|
|
scrollableNode.visitChildren((SemanticsNode node) {
|
|
syntheticScrollableNode = node;
|
|
return true;
|
|
});
|
|
expect(syntheticScrollableNode!.hasFlag(ui.SemanticsFlag.hasImplicitScrolling), isTrue);
|
|
handle.dispose();
|
|
});
|
|
|
|
testWidgets('Two panel semantics is added to the sibling nodes of direct children', (WidgetTester tester) async {
|
|
final SemanticsHandle handle = tester.ensureSemantics();
|
|
final UniqueKey key = UniqueKey();
|
|
await tester.pumpWidget(MaterialApp(
|
|
home: Scaffold(
|
|
body: ListView(
|
|
key: key,
|
|
children: const <Widget>[
|
|
TextField(
|
|
autofocus: true,
|
|
decoration: InputDecoration(
|
|
prefixText: 'prefix',
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
));
|
|
// Wait for focus.
|
|
await tester.pumpAndSettle();
|
|
|
|
final SemanticsNode scrollableNode = tester.getSemantics(find.byKey(key));
|
|
SemanticsNode? intermediateNode;
|
|
scrollableNode.visitChildren((SemanticsNode node) {
|
|
intermediateNode = node;
|
|
return true;
|
|
});
|
|
SemanticsNode? syntheticScrollableNode;
|
|
intermediateNode!.visitChildren((SemanticsNode node) {
|
|
syntheticScrollableNode = node;
|
|
return true;
|
|
});
|
|
expect(syntheticScrollableNode!.hasFlag(ui.SemanticsFlag.hasImplicitScrolling), isTrue);
|
|
|
|
int numberOfChild = 0;
|
|
syntheticScrollableNode!.visitChildren((SemanticsNode node) {
|
|
expect(node.isTagged(RenderViewport.useTwoPaneSemantics), isTrue);
|
|
numberOfChild += 1;
|
|
return true;
|
|
});
|
|
expect(numberOfChild, 2);
|
|
|
|
handle.dispose();
|
|
});
|
|
|
|
testWidgets('Scroll inertia cancel event', (WidgetTester tester) async {
|
|
await pumpTest(tester, null);
|
|
await tester.fling(find.byType(Scrollable), const Offset(0.0, -dragOffset), 1000.0);
|
|
expect(getScrollOffset(tester), dragOffset);
|
|
await tester.pump(); // trigger fling
|
|
expect(getScrollOffset(tester), dragOffset);
|
|
await tester.pump(const Duration(milliseconds: 200));
|
|
final TestPointer testPointer = TestPointer(1, ui.PointerDeviceKind.mouse);
|
|
await tester.sendEventToBinding(testPointer.hover(tester.getCenter(find.byType(Scrollable))));
|
|
await tester.sendEventToBinding(testPointer.scrollInertiaCancel()); // Cancel partway through.
|
|
await tester.pump();
|
|
expect(getScrollOffset(tester), closeTo(344.0642, 0.0001));
|
|
await tester.pump(const Duration(milliseconds: 4800));
|
|
expect(getScrollOffset(tester), closeTo(344.0642, 0.0001));
|
|
});
|
|
|
|
testWidgets('Swapping viewports in a scrollable does not crash', (WidgetTester tester) async {
|
|
final SemanticsTester semantics = SemanticsTester(tester);
|
|
final GlobalKey key = GlobalKey();
|
|
final GlobalKey key1 = GlobalKey();
|
|
Widget buildScrollable(bool withViewPort) {
|
|
return Scrollable(
|
|
key: key,
|
|
viewportBuilder: (BuildContext context, ViewportOffset position) {
|
|
if (withViewPort) {
|
|
return Viewport(
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(child: Semantics(key: key1, container: true, child: const Text('text1')))
|
|
],
|
|
offset: ViewportOffset.zero(),
|
|
);
|
|
}
|
|
return Semantics(key: key1, container: true, child: const Text('text1'));
|
|
},
|
|
);
|
|
}
|
|
// This should cache the inner node in Scrollable with the children text1.
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: buildScrollable(true),
|
|
),
|
|
);
|
|
expect(semantics, includesNodeWith(tags: <SemanticsTag>{RenderViewport.useTwoPaneSemantics}));
|
|
// This does not use two panel, this should clear cached inner node.
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: buildScrollable(false),
|
|
),
|
|
);
|
|
expect(semantics, isNot(includesNodeWith(tags: <SemanticsTag>{RenderViewport.useTwoPaneSemantics})));
|
|
// If the inner node was cleared in the previous step, this should not crash.
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: buildScrollable(true),
|
|
),
|
|
);
|
|
expect(semantics, includesNodeWith(tags: <SemanticsTag>{RenderViewport.useTwoPaneSemantics}));
|
|
expect(tester.takeException(), isNull);
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets('deltaToScrollOrigin getter', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
const MaterialApp(
|
|
home: CustomScrollView(
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(child: SizedBox(height: 2000.0)),
|
|
],
|
|
),
|
|
)
|
|
);
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true), kind: ui.PointerDeviceKind.unknown);
|
|
expect(getScrollOffset(tester), 0.0);
|
|
await gesture.moveBy(const Offset(0.0, -200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 200);
|
|
final ScrollableState scrollable = tester.state(find.byType(Scrollable));
|
|
expect(scrollable.deltaToScrollOrigin, const Offset(0.0, 200));
|
|
});
|
|
|
|
testWidgets('resolvedPhysics getter', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
theme: ThemeData.light().copyWith(
|
|
platform: TargetPlatform.android,
|
|
),
|
|
home: const CustomScrollView(
|
|
physics: AlwaysScrollableScrollPhysics(),
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(child: SizedBox(height: 2000.0)),
|
|
],
|
|
),
|
|
)
|
|
);
|
|
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Scrollable), warnIfMissed: true), kind: ui.PointerDeviceKind.unknown);
|
|
expect(getScrollOffset(tester), 0.0);
|
|
await gesture.moveBy(const Offset(0.0, -200));
|
|
await tester.pump();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(getScrollOffset(tester), 200);
|
|
final ScrollableState scrollable = tester.state(find.byType(Scrollable));
|
|
String types(ScrollPhysics? value) => value!.parent == null ? '${value.runtimeType}' : '${value.runtimeType} ${types(value.parent)}';
|
|
|
|
expect(
|
|
types(scrollable.resolvedPhysics),
|
|
'AlwaysScrollableScrollPhysics ClampingScrollPhysics RangeMaintainingScrollPhysics',
|
|
);
|
|
});
|
|
}
|
|
|
|
// ignore: must_be_immutable
|
|
class SuperPessimisticScrollPhysics extends ScrollPhysics {
|
|
SuperPessimisticScrollPhysics({super.parent});
|
|
|
|
int count = 0;
|
|
|
|
@override
|
|
bool recommendDeferredLoading(double velocity, ScrollMetrics metrics, BuildContext context) {
|
|
count++;
|
|
return velocity > 1;
|
|
}
|
|
|
|
@override
|
|
ScrollPhysics applyTo(ScrollPhysics? ancestor) {
|
|
return SuperPessimisticScrollPhysics(parent: buildParent(ancestor));
|
|
}
|
|
}
|
|
|
|
class ExtraSuperPessimisticScrollPhysics extends ScrollPhysics {
|
|
const ExtraSuperPessimisticScrollPhysics({super.parent});
|
|
|
|
@override
|
|
bool recommendDeferredLoading(double velocity, ScrollMetrics metrics, BuildContext context) {
|
|
return true;
|
|
}
|
|
|
|
@override
|
|
ScrollPhysics applyTo(ScrollPhysics? ancestor) {
|
|
return ExtraSuperPessimisticScrollPhysics(parent: buildParent(ancestor));
|
|
}
|
|
}
|
|
|
|
class TestTickerProvider extends TickerProvider {
|
|
@override
|
|
Ticker createTicker(TickerCallback onTick) {
|
|
return Ticker(onTick);
|
|
}
|
|
}
|