// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/rendering.dart'; import '../flutter_test_alternative.dart'; import 'rendering_tester.dart'; void main() { // Regression test for https://github.com/flutter/flutter/issues/35426. test('RenderSliverFloatingPersistentHeader maxScrollObstructionExtent is 0', () { final TestRenderSliverFloatingPersistentHeader header = TestRenderSliverFloatingPersistentHeader(child: RenderSizedBox(const Size(400.0, 100.0))); final RenderViewport root = RenderViewport( axisDirection: AxisDirection.down, crossAxisDirection: AxisDirection.right, offset: ViewportOffset.zero(), cacheExtent: 0, children: <RenderSliver>[ header, ], ); layout(root); expect(header.geometry.maxScrollObstructionExtent, 0); }); } class TestRenderSliverFloatingPersistentHeader extends RenderSliverFloatingPersistentHeader { TestRenderSliverFloatingPersistentHeader({ RenderBox child, }) : super(child: child); @override double get maxExtent => 200; @override double get minExtent => 100; }