70 lines
2.2 KiB
Dart
70 lines
2.2 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/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'rendering_tester.dart';
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void main() {
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// Regression test for https://github.com/flutter/flutter/issues/35426.
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test('RenderSliverFloatingPersistentHeader maxScrollObstructionExtent is 0', () {
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final TestRenderSliverFloatingPersistentHeader header = TestRenderSliverFloatingPersistentHeader(child: RenderSizedBox(const Size(400.0, 100.0)));
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.down,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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cacheExtent: 0,
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children: <RenderSliver>[
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header,
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],
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);
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layout(root);
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expect(header.geometry!.maxScrollObstructionExtent, 0);
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});
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test('RenderSliverFloatingPinnedPersistentHeader maxScrollObstructionExtent is minExtent', () {
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final TestRenderSliverFloatingPinnedPersistentHeader header = TestRenderSliverFloatingPinnedPersistentHeader(
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child: RenderSizedBox(const Size(400.0, 100.0)
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));
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.down,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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cacheExtent: 0,
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children: <RenderSliver>[
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header,
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],
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);
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layout(root);
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expect(header.geometry!.maxScrollObstructionExtent, 100.0);
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});
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}
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class TestRenderSliverFloatingPersistentHeader extends RenderSliverFloatingPersistentHeader {
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TestRenderSliverFloatingPersistentHeader({
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required RenderBox child,
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}) : super(child: child, vsync: null, showOnScreenConfiguration: null);
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@override
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double get maxExtent => 200;
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@override
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double get minExtent => 100;
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}
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class TestRenderSliverFloatingPinnedPersistentHeader extends RenderSliverFloatingPinnedPersistentHeader {
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TestRenderSliverFloatingPinnedPersistentHeader({
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required RenderBox child,
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}) : super(child: child, vsync: null, showOnScreenConfiguration: null);
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@override
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double get maxExtent => 200;
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@override
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double get minExtent => 100;
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}
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