51 lines
1.9 KiB
Dart
51 lines
1.9 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import '../rendering/rendering_tester.dart';
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void main() {
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testWidgets('ShrinkWrappingViewport respects clipBehavior', (WidgetTester tester) async {
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Widget build(ShrinkWrappingViewport child) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: child,
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);
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}
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await tester.pumpWidget(build(
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ShrinkWrappingViewport(
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offset: ViewportOffset.zero(),
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slivers: <Widget>[SliverToBoxAdapter(child: Container(height: 2000.0))],
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)
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));
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// 1st, check that the render object has received the default clip behavior.
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final RenderShrinkWrappingViewport renderObject = tester.allRenderObjects.whereType<RenderShrinkWrappingViewport>().first;
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expect(renderObject.clipBehavior, equals(Clip.hardEdge));
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// 2nd, check that the painting context has received the default clip behavior.
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final TestClipPaintingContext context = TestClipPaintingContext();
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renderObject.paint(context, Offset.zero);
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expect(context.clipBehavior, equals(Clip.hardEdge));
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// 3rd, pump a new widget to check that the render object can update its clip behavior.
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await tester.pumpWidget(build(
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ShrinkWrappingViewport(
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offset: ViewportOffset.zero(),
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slivers: <Widget>[SliverToBoxAdapter(child: Container(height: 2000.0))],
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clipBehavior: Clip.antiAlias,
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)
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));
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expect(renderObject.clipBehavior, equals(Clip.antiAlias));
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// 4th, check that a non-default clip behavior can be sent to the painting context.
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renderObject.paint(context, Offset.zero);
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expect(context.clipBehavior, equals(Clip.antiAlias));
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});
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}
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