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89 lines
3.9 KiB
Dart
89 lines
3.9 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_web/rendering.dart';
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import '../flutter_test_alternative.dart';
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void main() {
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test('list body and paragraph intrinsics', () {
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final RenderParagraph paragraph = RenderParagraph(
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const TextSpan(
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style: TextStyle(height: 1.0),
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text: 'Hello World',
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),
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textDirection: TextDirection.ltr,
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);
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final RenderListBody testBlock = RenderListBody(
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children: <RenderBox>[
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paragraph,
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],
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);
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final double textWidth = paragraph.getMaxIntrinsicWidth(double.infinity);
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final double oneLineTextHeight =
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paragraph.getMinIntrinsicHeight(double.infinity);
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final double constrainedWidth = textWidth * 0.9;
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final double wrappedTextWidth =
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paragraph.getMinIntrinsicWidth(double.infinity);
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final double twoLinesTextHeight =
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paragraph.getMinIntrinsicHeight(constrainedWidth);
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final double manyLinesTextHeight = paragraph.getMinIntrinsicHeight(0.0);
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// paragraph
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expect(wrappedTextWidth, greaterThan(0.0));
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expect(wrappedTextWidth, lessThan(textWidth));
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expect(oneLineTextHeight, lessThan(twoLinesTextHeight));
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expect(twoLinesTextHeight, lessThan(oneLineTextHeight * 3.0));
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expect(manyLinesTextHeight, greaterThan(twoLinesTextHeight));
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expect(paragraph.getMaxIntrinsicHeight(double.infinity),
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equals(oneLineTextHeight));
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expect(paragraph.getMaxIntrinsicHeight(constrainedWidth),
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equals(twoLinesTextHeight));
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expect(paragraph.getMaxIntrinsicHeight(0.0), equals(manyLinesTextHeight));
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// vertical block (same expectations)
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expect(testBlock.getMinIntrinsicWidth(double.infinity),
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equals(wrappedTextWidth));
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expect(testBlock.getMaxIntrinsicWidth(double.infinity), equals(textWidth));
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expect(testBlock.getMinIntrinsicHeight(double.infinity),
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equals(oneLineTextHeight));
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expect(testBlock.getMinIntrinsicHeight(constrainedWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(double.infinity),
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equals(oneLineTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(constrainedWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMinIntrinsicWidth(0.0), equals(wrappedTextWidth));
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expect(testBlock.getMaxIntrinsicWidth(0.0), equals(textWidth));
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expect(testBlock.getMinIntrinsicHeight(wrappedTextWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(wrappedTextWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMinIntrinsicHeight(0.0), equals(manyLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(0.0), equals(manyLinesTextHeight));
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// horizontal block (same expectations again)
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testBlock.axisDirection = AxisDirection.right;
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expect(testBlock.getMinIntrinsicWidth(double.infinity),
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equals(wrappedTextWidth));
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expect(testBlock.getMaxIntrinsicWidth(double.infinity), equals(textWidth));
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expect(testBlock.getMinIntrinsicHeight(double.infinity),
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equals(oneLineTextHeight));
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expect(testBlock.getMinIntrinsicHeight(constrainedWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(double.infinity),
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equals(oneLineTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(constrainedWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMinIntrinsicWidth(0.0), equals(wrappedTextWidth));
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expect(testBlock.getMaxIntrinsicWidth(0.0), equals(textWidth));
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expect(testBlock.getMinIntrinsicHeight(wrappedTextWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(wrappedTextWidth),
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equals(twoLinesTextHeight));
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expect(testBlock.getMinIntrinsicHeight(0.0), equals(manyLinesTextHeight));
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expect(testBlock.getMaxIntrinsicHeight(0.0), equals(manyLinesTextHeight));
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});
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}
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