| // 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'; |
| |
| class RenderTestBox extends RenderBox { |
| double value = 0.0; |
| double next() { |
| value += 1.0; |
| return value; |
| } |
| @override |
| double computeMinIntrinsicWidth(double height) => next(); |
| @override |
| double computeMaxIntrinsicWidth(double height) => next(); |
| @override |
| double computeMinIntrinsicHeight(double width) => next(); |
| @override |
| double computeMaxIntrinsicHeight(double width) => next(); |
| } |
| |
| void main() { |
| test('Intrinsics cache', () { |
| final RenderBox test = RenderTestBox(); |
| |
| expect(test.getMinIntrinsicWidth(0.0), equals(1.0)); |
| expect(test.getMinIntrinsicWidth(100.0), equals(2.0)); |
| expect(test.getMinIntrinsicWidth(200.0), equals(3.0)); |
| expect(test.getMinIntrinsicWidth(0.0), equals(1.0)); |
| expect(test.getMinIntrinsicWidth(100.0), equals(2.0)); |
| expect(test.getMinIntrinsicWidth(200.0), equals(3.0)); |
| |
| expect(test.getMaxIntrinsicWidth(0.0), equals(4.0)); |
| expect(test.getMaxIntrinsicWidth(100.0), equals(5.0)); |
| expect(test.getMaxIntrinsicWidth(200.0), equals(6.0)); |
| expect(test.getMaxIntrinsicWidth(0.0), equals(4.0)); |
| expect(test.getMaxIntrinsicWidth(100.0), equals(5.0)); |
| expect(test.getMaxIntrinsicWidth(200.0), equals(6.0)); |
| |
| expect(test.getMinIntrinsicHeight(0.0), equals(7.0)); |
| expect(test.getMinIntrinsicHeight(100.0), equals(8.0)); |
| expect(test.getMinIntrinsicHeight(200.0), equals(9.0)); |
| expect(test.getMinIntrinsicHeight(0.0), equals(7.0)); |
| expect(test.getMinIntrinsicHeight(100.0), equals(8.0)); |
| expect(test.getMinIntrinsicHeight(200.0), equals(9.0)); |
| |
| expect(test.getMaxIntrinsicHeight(0.0), equals(10.0)); |
| expect(test.getMaxIntrinsicHeight(100.0), equals(11.0)); |
| expect(test.getMaxIntrinsicHeight(200.0), equals(12.0)); |
| expect(test.getMaxIntrinsicHeight(0.0), equals(10.0)); |
| expect(test.getMaxIntrinsicHeight(100.0), equals(11.0)); |
| expect(test.getMaxIntrinsicHeight(200.0), equals(12.0)); |
| |
| // now read them all again backwards |
| expect(test.getMaxIntrinsicHeight(200.0), equals(12.0)); |
| expect(test.getMaxIntrinsicHeight(100.0), equals(11.0)); |
| expect(test.getMaxIntrinsicHeight(0.0), equals(10.0)); |
| expect(test.getMinIntrinsicHeight(200.0), equals(9.0)); |
| expect(test.getMinIntrinsicHeight(100.0), equals(8.0)); |
| expect(test.getMinIntrinsicHeight(0.0), equals(7.0)); |
| expect(test.getMaxIntrinsicWidth(200.0), equals(6.0)); |
| expect(test.getMaxIntrinsicWidth(100.0), equals(5.0)); |
| expect(test.getMaxIntrinsicWidth(0.0), equals(4.0)); |
| expect(test.getMinIntrinsicWidth(200.0), equals(3.0)); |
| expect(test.getMinIntrinsicWidth(100.0), equals(2.0)); |
| expect(test.getMinIntrinsicWidth(0.0), equals(1.0)); |
| |
| }); |
| } |