mirror of
https://github.com/alibaba/flutter-go.git
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848 lines
30 KiB
Dart
848 lines
30 KiB
Dart
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:math' as math;
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import 'package:flutter_web_test/flutter_web_test.dart';
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import 'package:flutter_web/rendering.dart';
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import 'package:flutter_web/widgets.dart';
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Finder findKey(int i) => find.byKey(ValueKey<int>(i));
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Widget buildSingleChildScrollView(Axis scrollDirection,
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{bool reverse = false}) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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width: 600.0,
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height: 400.0,
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child: SingleChildScrollView(
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scrollDirection: scrollDirection,
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reverse: reverse,
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child: ListBody(
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mainAxis: scrollDirection,
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children: <Widget>[
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Container(
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key: const ValueKey<int>(0), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(1), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(2), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(3), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(4), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(5), width: 200.0, height: 200.0),
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Container(
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key: const ValueKey<int>(6), width: 200.0, height: 200.0),
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],
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),
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),
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),
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),
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);
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}
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Widget buildListView(Axis scrollDirection,
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{bool reverse = false, bool shrinkWrap = false}) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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width: 600.0,
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height: 400.0,
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child: ListView(
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scrollDirection: scrollDirection,
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reverse: reverse,
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addSemanticIndexes: false,
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shrinkWrap: shrinkWrap,
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children: <Widget>[
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Container(key: const ValueKey<int>(0), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(1), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(2), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(3), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(4), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(5), width: 200.0, height: 200.0),
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Container(key: const ValueKey<int>(6), width: 200.0, height: 200.0),
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],
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),
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),
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),
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);
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}
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void main() {
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group('SingleChildScrollView', () {
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testWidgets('SingleChildScrollView ensureVisible Axis.vertical',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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await tester.pumpWidget(buildSingleChildScrollView(Axis.vertical));
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
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Scrollable.ensureVisible(findContext(6));
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await tester.pump();
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expect(tester.getTopLeft(findKey(6)).dy, equals(300.0));
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Scrollable.ensureVisible(findContext(4), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(4)).dy, equals(500.0));
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Scrollable.ensureVisible(findContext(0), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(0)).dy, equals(100.0));
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
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});
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testWidgets('SingleChildScrollView ensureVisible Axis.horizontal',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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await tester.pumpWidget(buildSingleChildScrollView(Axis.horizontal));
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
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Scrollable.ensureVisible(findContext(6));
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await tester.pump();
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expect(tester.getTopLeft(findKey(6)).dx, equals(500.0));
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Scrollable.ensureVisible(findContext(4), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(4)).dx, equals(700.0));
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Scrollable.ensureVisible(findContext(0), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(0)).dx, equals(100.0));
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
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});
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testWidgets('SingleChildScrollView ensureVisible Axis.vertical reverse',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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await tester
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.pumpWidget(buildSingleChildScrollView(Axis.vertical, reverse: true));
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
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Scrollable.ensureVisible(findContext(0));
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await tester.pump();
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expect(tester.getBottomRight(findKey(0)).dy, equals(300.0));
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Scrollable.ensureVisible(findContext(2), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(2)).dy, equals(100.0));
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Scrollable.ensureVisible(findContext(6), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(6)).dy, equals(500.0));
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
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});
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testWidgets('SingleChildScrollView ensureVisible Axis.horizontal reverse',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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await tester.pumpWidget(
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buildSingleChildScrollView(Axis.horizontal, reverse: true));
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
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Scrollable.ensureVisible(findContext(0));
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await tester.pump();
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expect(tester.getBottomRight(findKey(0)).dx, equals(300.0));
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Scrollable.ensureVisible(findContext(2), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(2)).dx, equals(100.0));
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Scrollable.ensureVisible(findContext(6), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(6)).dx, equals(700.0));
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
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});
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testWidgets('SingleChildScrollView ensureVisible rotated child',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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await tester.pumpWidget(Center(
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child: SizedBox(
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width: 600.0,
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height: 400.0,
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child: SingleChildScrollView(
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child: ListBody(
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children: <Widget>[
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Container(height: 200.0),
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Container(height: 200.0),
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Container(height: 200.0),
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Container(
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height: 200.0,
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child: Center(
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child: Transform(
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transform: Matrix4.rotationZ(math.pi),
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child: Container(
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key: const ValueKey<int>(0),
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width: 100.0,
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height: 100.0,
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color: const Color(0xFFFFFFFF),
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),
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),
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),
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),
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Container(height: 200.0),
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Container(height: 200.0),
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Container(height: 200.0),
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],
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),
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),
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),
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));
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Scrollable.ensureVisible(findContext(0));
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await tester.pump();
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expect(tester.getBottomRight(findKey(0)).dy, closeTo(100.0, 0.1));
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Scrollable.ensureVisible(findContext(0), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(0)).dy, closeTo(500.0, 0.1));
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});
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});
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group('ListView', () {
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testWidgets('ListView ensureVisible Axis.vertical',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
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tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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await tester.pumpWidget(buildListView(Axis.vertical));
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await prepare(480.0);
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
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await prepare(1083.0);
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Scrollable.ensureVisible(findContext(6));
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await tester.pump();
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expect(tester.getTopLeft(findKey(6)).dy, equals(300.0));
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await prepare(735.0);
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Scrollable.ensureVisible(findContext(4), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(4)).dy, equals(500.0));
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await prepare(123.0);
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Scrollable.ensureVisible(findContext(0), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(0)).dy, equals(100.0));
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await prepare(523.0);
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
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});
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testWidgets('ListView ensureVisible Axis.horizontal',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
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tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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await tester.pumpWidget(buildListView(Axis.horizontal));
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await prepare(23.0);
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
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await prepare(843.0);
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Scrollable.ensureVisible(findContext(6));
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await tester.pump();
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expect(tester.getTopLeft(findKey(6)).dx, equals(500.0));
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await prepare(415.0);
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Scrollable.ensureVisible(findContext(4), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(4)).dx, equals(700.0));
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await prepare(46.0);
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Scrollable.ensureVisible(findContext(0), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(0)).dx, equals(100.0));
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await prepare(211.0);
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
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});
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testWidgets('ListView ensureVisible Axis.vertical reverse',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
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tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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await tester.pumpWidget(buildListView(Axis.vertical, reverse: true));
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await prepare(211.0);
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
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await prepare(23.0);
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Scrollable.ensureVisible(findContext(0));
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await tester.pump();
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expect(tester.getBottomRight(findKey(0)).dy, equals(500.0));
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await prepare(230.0);
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Scrollable.ensureVisible(findContext(2), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(2)).dy, equals(100.0));
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await prepare(1083.0);
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Scrollable.ensureVisible(findContext(6), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(6)).dy, equals(300.0));
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await prepare(345.0);
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
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});
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testWidgets('ListView ensureVisible Axis.horizontal reverse',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
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tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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await tester.pumpWidget(buildListView(Axis.horizontal, reverse: true));
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await prepare(211.0);
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
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await prepare(23.0);
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Scrollable.ensureVisible(findContext(0));
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await tester.pump();
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expect(tester.getBottomRight(findKey(0)).dx, equals(700.0));
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await prepare(230.0);
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Scrollable.ensureVisible(findContext(2), alignment: 1.0);
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await tester.pump();
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expect(tester.getTopLeft(findKey(2)).dx, equals(100.0));
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await prepare(1083.0);
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Scrollable.ensureVisible(findContext(6), alignment: 1.0);
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await tester.pump();
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expect(tester.getBottomRight(findKey(6)).dx, equals(300.0));
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await prepare(345.0);
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Scrollable.ensureVisible(findContext(3),
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duration: const Duration(seconds: 1));
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 1020));
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expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
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});
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// TODO(abarth): Unskip this test. See https://github.com/flutter/flutter/issues/7919
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testWidgets('ListView ensureVisible negative child',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
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tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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double getOffset() {
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return tester
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.state<ScrollableState>(find.byType(Scrollable))
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.position
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.pixels;
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}
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Widget buildSliver(int i) {
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return SliverToBoxAdapter(
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key: ValueKey<int>(i),
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child: Container(width: 200.0, height: 200.0),
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);
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}
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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width: 600.0,
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height: 400.0,
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child: Scrollable(
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viewportBuilder: (BuildContext context, ViewportOffset offset) {
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return Viewport(
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offset: offset,
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center: const ValueKey<int>(4),
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slivers: <Widget>[
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buildSliver(0),
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buildSliver(1),
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buildSliver(2),
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buildSliver(3),
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buildSliver(4),
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buildSliver(5),
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buildSliver(6),
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],
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);
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},
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),
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),
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),
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),
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);
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await prepare(-125.0);
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Scrollable.ensureVisible(findContext(3));
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await tester.pump();
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expect(getOffset(), equals(-200.0));
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await prepare(-225.0);
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Scrollable.ensureVisible(findContext(2));
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await tester.pump();
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expect(getOffset(), equals(-400.0));
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}, skip: true);
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testWidgets('ListView ensureVisible rotated child',
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(WidgetTester tester) async {
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BuildContext findContext(int i) => tester.element(findKey(i));
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Future<void> prepare(double offset) async {
|
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tester
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.state<ScrollableState>(find.byType(Scrollable))
|
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.position
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.jumpTo(offset);
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await tester.pump();
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}
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await tester.pumpWidget(Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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width: 600.0,
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height: 400.0,
|
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child: ListView(
|
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children: <Widget>[
|
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Container(height: 200.0),
|
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Container(height: 200.0),
|
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Container(height: 200.0),
|
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Container(
|
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height: 200.0,
|
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child: Center(
|
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child: Transform(
|
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transform: Matrix4.rotationZ(math.pi),
|
|
child: Container(
|
|
key: const ValueKey<int>(0),
|
|
width: 100.0,
|
|
height: 100.0,
|
|
color: const Color(0xFFFFFFFF),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
Container(height: 200.0),
|
|
Container(height: 200.0),
|
|
Container(height: 200.0),
|
|
],
|
|
),
|
|
),
|
|
)));
|
|
|
|
await prepare(321.0);
|
|
Scrollable.ensureVisible(findContext(0));
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(0)).dy, closeTo(100.0, 0.1));
|
|
|
|
Scrollable.ensureVisible(findContext(0), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(0)).dy, closeTo(500.0, 0.1));
|
|
});
|
|
});
|
|
|
|
group('ListView shrinkWrap', () {
|
|
testWidgets('ListView ensureVisible Axis.vertical',
|
|
(WidgetTester tester) async {
|
|
BuildContext findContext(int i) => tester.element(findKey(i));
|
|
Future<void> prepare(double offset) async {
|
|
tester
|
|
.state<ScrollableState>(find.byType(Scrollable))
|
|
.position
|
|
.jumpTo(offset);
|
|
await tester.pump();
|
|
}
|
|
|
|
await tester.pumpWidget(buildListView(Axis.vertical, shrinkWrap: true));
|
|
|
|
await prepare(480.0);
|
|
Scrollable.ensureVisible(findContext(3));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
|
|
|
|
await prepare(1083.0);
|
|
Scrollable.ensureVisible(findContext(6));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(6)).dy, equals(300.0));
|
|
|
|
await prepare(735.0);
|
|
Scrollable.ensureVisible(findContext(4), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(4)).dy, equals(500.0));
|
|
|
|
await prepare(123.0);
|
|
Scrollable.ensureVisible(findContext(0), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(0)).dy, equals(100.0));
|
|
|
|
await prepare(523.0);
|
|
Scrollable.ensureVisible(findContext(3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
|
|
});
|
|
|
|
testWidgets('ListView ensureVisible Axis.horizontal',
|
|
(WidgetTester tester) async {
|
|
BuildContext findContext(int i) => tester.element(findKey(i));
|
|
Future<void> prepare(double offset) async {
|
|
tester
|
|
.state<ScrollableState>(find.byType(Scrollable))
|
|
.position
|
|
.jumpTo(offset);
|
|
await tester.pump();
|
|
}
|
|
|
|
await tester.pumpWidget(buildListView(Axis.horizontal, shrinkWrap: true));
|
|
|
|
await prepare(23.0);
|
|
Scrollable.ensureVisible(findContext(3));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
|
|
|
|
await prepare(843.0);
|
|
Scrollable.ensureVisible(findContext(6));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(6)).dx, equals(500.0));
|
|
|
|
await prepare(415.0);
|
|
Scrollable.ensureVisible(findContext(4), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(4)).dx, equals(700.0));
|
|
|
|
await prepare(46.0);
|
|
Scrollable.ensureVisible(findContext(0), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(0)).dx, equals(100.0));
|
|
|
|
await prepare(211.0);
|
|
Scrollable.ensureVisible(findContext(3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getTopLeft(findKey(3)).dx, equals(100.0));
|
|
});
|
|
|
|
testWidgets('ListView ensureVisible Axis.vertical reverse',
|
|
(WidgetTester tester) async {
|
|
BuildContext findContext(int i) => tester.element(findKey(i));
|
|
Future<void> prepare(double offset) async {
|
|
tester
|
|
.state<ScrollableState>(find.byType(Scrollable))
|
|
.position
|
|
.jumpTo(offset);
|
|
await tester.pump();
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
buildListView(Axis.vertical, reverse: true, shrinkWrap: true));
|
|
|
|
await prepare(211.0);
|
|
Scrollable.ensureVisible(findContext(3));
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
|
|
|
|
await prepare(23.0);
|
|
Scrollable.ensureVisible(findContext(0));
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(0)).dy, equals(500.0));
|
|
|
|
await prepare(230.0);
|
|
Scrollable.ensureVisible(findContext(2), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(2)).dy, equals(100.0));
|
|
|
|
await prepare(1083.0);
|
|
Scrollable.ensureVisible(findContext(6), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(6)).dy, equals(300.0));
|
|
|
|
await prepare(345.0);
|
|
Scrollable.ensureVisible(findContext(3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getBottomRight(findKey(3)).dy, equals(500.0));
|
|
});
|
|
|
|
testWidgets('ListView ensureVisible Axis.horizontal reverse',
|
|
(WidgetTester tester) async {
|
|
BuildContext findContext(int i) => tester.element(findKey(i));
|
|
Future<void> prepare(double offset) async {
|
|
tester
|
|
.state<ScrollableState>(find.byType(Scrollable))
|
|
.position
|
|
.jumpTo(offset);
|
|
await tester.pump();
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
buildListView(Axis.horizontal, reverse: true, shrinkWrap: true));
|
|
|
|
await prepare(211.0);
|
|
Scrollable.ensureVisible(findContext(3));
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
|
|
|
|
await prepare(23.0);
|
|
Scrollable.ensureVisible(findContext(0));
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(0)).dx, equals(700.0));
|
|
|
|
await prepare(230.0);
|
|
Scrollable.ensureVisible(findContext(2), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(2)).dx, equals(100.0));
|
|
|
|
await prepare(1083.0);
|
|
Scrollable.ensureVisible(findContext(6), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(6)).dx, equals(300.0));
|
|
|
|
await prepare(345.0);
|
|
Scrollable.ensureVisible(findContext(3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getBottomRight(findKey(3)).dx, equals(700.0));
|
|
});
|
|
});
|
|
|
|
group('Scrollable with center', () {
|
|
testWidgets('ensureVisible', (WidgetTester tester) async {
|
|
BuildContext findContext(int i) => tester.element(findKey(i));
|
|
Future<void> prepare(double offset) async {
|
|
tester
|
|
.state<ScrollableState>(find.byType(Scrollable))
|
|
.position
|
|
.jumpTo(offset);
|
|
await tester.pump();
|
|
}
|
|
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Center(
|
|
child: SizedBox(
|
|
width: 600.0,
|
|
height: 400.0,
|
|
child: Scrollable(
|
|
viewportBuilder: (BuildContext context, ViewportOffset offset) {
|
|
return Viewport(
|
|
offset: offset,
|
|
center: const ValueKey<String>('center'),
|
|
slivers: <Widget>[
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-6),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-5),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-4),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-3),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-2),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(-1),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(0),
|
|
width: 200.0,
|
|
height: 200.0),
|
|
key: const ValueKey<String>('center')),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(1),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(2),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(3),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(4),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(5),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
SliverToBoxAdapter(
|
|
child: Container(
|
|
key: const ValueKey<int>(6),
|
|
width: 200.0,
|
|
height: 200.0)),
|
|
],
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
await prepare(480.0);
|
|
Scrollable.ensureVisible(findContext(3));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
|
|
|
|
await prepare(1083.0);
|
|
Scrollable.ensureVisible(findContext(6));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(6)).dy, equals(300.0));
|
|
|
|
await prepare(735.0);
|
|
Scrollable.ensureVisible(findContext(4), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(4)).dy, equals(500.0));
|
|
|
|
await prepare(123.0);
|
|
Scrollable.ensureVisible(findContext(0), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(0)).dy, equals(500.0));
|
|
|
|
await prepare(523.0);
|
|
Scrollable.ensureVisible(findContext(3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getTopLeft(findKey(3)).dy, equals(100.0));
|
|
|
|
await prepare(-480.0);
|
|
Scrollable.ensureVisible(findContext(-3));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(-3)).dy, equals(100.0));
|
|
|
|
await prepare(-1083.0);
|
|
Scrollable.ensureVisible(findContext(-6));
|
|
await tester.pump();
|
|
expect(tester.getTopLeft(findKey(-6)).dy, equals(100.0));
|
|
|
|
await prepare(-735.0);
|
|
Scrollable.ensureVisible(findContext(-4), alignment: 1.0);
|
|
await tester.pump();
|
|
expect(tester.getBottomRight(findKey(-4)).dy, equals(500.0));
|
|
|
|
await prepare(-523.0);
|
|
Scrollable.ensureVisible(findContext(-3),
|
|
duration: const Duration(seconds: 1));
|
|
await tester.pump();
|
|
await tester.pump(const Duration(milliseconds: 1020));
|
|
expect(tester.getTopLeft(findKey(-3)).dy, equals(100.0));
|
|
});
|
|
});
|
|
}
|