An evil test for slivers. (#7671)
Combines many sliver features at once.
This commit is contained in:
Ian Hickson
187
packages/flutter/test/widgets/slivers_evil_test.dart
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187
packages/flutter/test/widgets/slivers_evil_test.dart
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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/physics.dart';
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import 'package:flutter/material.dart';
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class TestSliverAppBarDelegate extends SliverAppBarDelegate {
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TestSliverAppBarDelegate(this._maxExtent);
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final double _maxExtent;
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@override
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double get maxExtent => _maxExtent;
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@override
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Widget build(BuildContext context, double shrinkOffset) {
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return new Column(
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children: <Widget>[
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new Container(height: 16.0),
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new Expanded(child: new Container()),
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],
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);
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}
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@override
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bool shouldRebuild(TestSliverAppBarDelegate oldDelegate) => false;
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}
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class TestBehavior extends ScrollBehavior2 {
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@override
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Widget wrap(BuildContext context, Widget child, AxisDirection axisDirection) {
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return new GlowingOverscrollIndicator(
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child: child,
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axisDirection: axisDirection,
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color: const Color(0xFFFFFFFF),
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);
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}
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@override
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ScrollPosition createScrollPosition(BuildContext context, Scrollable2State state, ScrollPosition oldPosition) {
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return new TestViewportScrollPosition(
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state,
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new Tolerance(velocity: 20.0, distance: 1.0),
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oldPosition,
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);
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}
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@override
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bool shouldNotify(TestBehavior oldDelegate) => false;
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}
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class TestViewportScrollPosition extends AbsoluteScrollPosition
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with ClampingAbsoluteScrollPositionMixIn {
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TestViewportScrollPosition(
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Scrollable2State state,
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Tolerance scrollTolerances,
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ScrollPosition oldPosition,
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) : super(state, scrollTolerances, oldPosition);
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@override
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bool applyContentDimensions(double minScrollExtent, double maxScrollExtent) {
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expect(minScrollExtent, moreOrLessEquals(-3895.0));
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expect(maxScrollExtent, moreOrLessEquals(8575.0));
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return super.applyContentDimensions(minScrollExtent, maxScrollExtent);
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}
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}
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void main() {
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testWidgets('Evil test of sliver features - 1', (WidgetTester tester) async {
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final GlobalKey<Scrollable2State> scrollableKey = new GlobalKey<Scrollable2State>();
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final GlobalKey centerKey = new GlobalKey();
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await tester.pumpWidget(
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new Scrollbar2(
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child: new ScrollableViewport2(
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key: scrollableKey,
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axisDirection: AxisDirection.down,
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center: centerKey,
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anchor: 0.25,
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scrollBehavior: new TestBehavior(),
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slivers: <Widget>[
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(150.0), pinned: true),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverPadding(
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padding: new EdgeInsets.all(50.0),
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child: new SliverToBoxAdapter(child: new Container(height: 520.0)),
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),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(150.0), floating: true),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(key: centerKey, child: new Container(height: 520.0)), // ------------------------ CENTER ------------------------
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(150.0), pinned: true),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverPadding(
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padding: new EdgeInsets.all(50.0),
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child: new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0), pinned: true),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(150.0), floating: true),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(150.0), floating: true),
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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new SliverBlock(
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delegate: new SliverBlockChildListDelegate(<Widget>[
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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new Container(height: 50.0),
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]),
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),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0)),
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new SliverAppBar(delegate: new TestSliverAppBarDelegate(250.0)),
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new SliverPadding(
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padding: new EdgeInsets.symmetric(horizontal: 50.0),
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child: new SliverToBoxAdapter(child: new Container(height: 520.0)),
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),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 520.0)),
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new SliverToBoxAdapter(child: new Container(height: 5.0)),
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],
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),
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),
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);
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AbsoluteScrollPosition position = tester.state<Scrollable2State>(find.byType(Scrollable2)).position;
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position.animate(to: 10000.0, curve: Curves.linear, duration: const Duration(minutes: 1));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pumpUntilNoTransientCallbacks(const Duration(milliseconds: 122));
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position.animate(to: -10000.0, curve: Curves.linear, duration: const Duration(minutes: 1));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pumpUntilNoTransientCallbacks(const Duration(milliseconds: 122));
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position.animate(to: 10000.0, curve: Curves.linear, duration: const Duration(minutes: 1));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pumpUntilNoTransientCallbacks(const Duration(milliseconds: 122));
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position.animate(to: -10000.0, curve: Curves.linear, duration: const Duration(seconds: 1));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pumpUntilNoTransientCallbacks(const Duration(milliseconds: 122));
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position.animate(to: 10000.0, curve: Curves.linear, duration: const Duration(seconds: 1));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 50));
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await tester.pumpUntilNoTransientCallbacks(const Duration(milliseconds: 122));
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});
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}
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