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65 lines
2.8 KiB
Dart
65 lines
2.8 KiB
Dart
// Copyright 2015 The Chromium 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:test/test.dart';
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class RenderTestBox extends RenderBox {
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double value = 0.0;
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double next() { value += 1.0; return value; }
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@override double computeMinIntrinsicWidth(double height) => next();
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@override double computeMaxIntrinsicWidth(double height) => next();
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@override double computeMinIntrinsicHeight(double width) => next();
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@override double computeMaxIntrinsicHeight(double width) => next();
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}
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void main() {
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test('Intrinsics cache', () {
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RenderBox test = new RenderTestBox();
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expect(test.getMinIntrinsicWidth(0.0), equals(1.0));
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expect(test.getMinIntrinsicWidth(100.0), equals(2.0));
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expect(test.getMinIntrinsicWidth(200.0), equals(3.0));
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expect(test.getMinIntrinsicWidth(0.0), equals(1.0));
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expect(test.getMinIntrinsicWidth(100.0), equals(2.0));
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expect(test.getMinIntrinsicWidth(200.0), equals(3.0));
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expect(test.getMaxIntrinsicWidth(0.0), equals(4.0));
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expect(test.getMaxIntrinsicWidth(100.0), equals(5.0));
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expect(test.getMaxIntrinsicWidth(200.0), equals(6.0));
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expect(test.getMaxIntrinsicWidth(0.0), equals(4.0));
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expect(test.getMaxIntrinsicWidth(100.0), equals(5.0));
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expect(test.getMaxIntrinsicWidth(200.0), equals(6.0));
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expect(test.getMinIntrinsicHeight(0.0), equals(7.0));
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expect(test.getMinIntrinsicHeight(100.0), equals(8.0));
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expect(test.getMinIntrinsicHeight(200.0), equals(9.0));
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expect(test.getMinIntrinsicHeight(0.0), equals(7.0));
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expect(test.getMinIntrinsicHeight(100.0), equals(8.0));
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expect(test.getMinIntrinsicHeight(200.0), equals(9.0));
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expect(test.getMaxIntrinsicHeight(0.0), equals(10.0));
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expect(test.getMaxIntrinsicHeight(100.0), equals(11.0));
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expect(test.getMaxIntrinsicHeight(200.0), equals(12.0));
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expect(test.getMaxIntrinsicHeight(0.0), equals(10.0));
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expect(test.getMaxIntrinsicHeight(100.0), equals(11.0));
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expect(test.getMaxIntrinsicHeight(200.0), equals(12.0));
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// now read them all again backwards
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expect(test.getMaxIntrinsicHeight(200.0), equals(12.0));
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expect(test.getMaxIntrinsicHeight(100.0), equals(11.0));
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expect(test.getMaxIntrinsicHeight(0.0), equals(10.0));
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expect(test.getMinIntrinsicHeight(200.0), equals(9.0));
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expect(test.getMinIntrinsicHeight(100.0), equals(8.0));
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expect(test.getMinIntrinsicHeight(0.0), equals(7.0));
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expect(test.getMaxIntrinsicWidth(200.0), equals(6.0));
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expect(test.getMaxIntrinsicWidth(100.0), equals(5.0));
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expect(test.getMaxIntrinsicWidth(0.0), equals(4.0));
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expect(test.getMinIntrinsicWidth(200.0), equals(3.0));
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expect(test.getMinIntrinsicWidth(100.0), equals(2.0));
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expect(test.getMinIntrinsicWidth(0.0), equals(1.0));
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});
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}
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