| // 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 'package:flutter_test/flutter_test.dart'; |
| |
| import 'rendering_tester.dart'; |
| |
| void main() { |
| TestRenderingFlutterBinding.ensureInitialized(); |
| |
| test('RenderBaseline', () { |
| RenderBaseline parent; |
| RenderSizedBox child; |
| final RenderBox root = RenderPositionedBox( |
| alignment: Alignment.topLeft, |
| child: parent = RenderBaseline( |
| baseline: 0.0, |
| baselineType: TextBaseline.alphabetic, |
| child: child = RenderSizedBox(const Size(100.0, 100.0)), |
| ), |
| ); |
| final BoxParentData childParentData = child.parentData! as BoxParentData; |
| |
| layout(root); |
| expect(childParentData.offset.dx, equals(0.0)); |
| expect(childParentData.offset.dy, equals(-100.0)); |
| expect(parent.size, equals(const Size(100.0, 0.0))); |
| |
| parent.baseline = 25.0; |
| pumpFrame(); |
| expect(childParentData.offset.dx, equals(0.0)); |
| expect(childParentData.offset.dy, equals(-75.0)); |
| expect(parent.size, equals(const Size(100.0, 25.0))); |
| |
| parent.baseline = 90.0; |
| pumpFrame(); |
| expect(childParentData.offset.dx, equals(0.0)); |
| expect(childParentData.offset.dy, equals(-10.0)); |
| expect(parent.size, equals(const Size(100.0, 90.0))); |
| |
| parent.baseline = 100.0; |
| pumpFrame(); |
| expect(childParentData.offset.dx, equals(0.0)); |
| expect(childParentData.offset.dy, equals(0.0)); |
| expect(parent.size, equals(const Size(100.0, 100.0))); |
| |
| parent.baseline = 110.0; |
| pumpFrame(); |
| expect(childParentData.offset.dx, equals(0.0)); |
| expect(childParentData.offset.dy, equals(10.0)); |
| expect(parent.size, equals(const Size(100.0, 110.0))); |
| }); |
| } |