71 lines
3.5 KiB
Dart
71 lines
3.5 KiB
Dart
// Copyright 2015 The Chromium 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:test/test.dart';
|
|
|
|
void main() {
|
|
test('block intrinsics', () {
|
|
RenderParagraph paragraph = new RenderParagraph(
|
|
new TextSpan(
|
|
style: new TextStyle(height: 1.0),
|
|
text: 'Hello World'
|
|
)
|
|
);
|
|
const BoxConstraints unconstrained = const BoxConstraints();
|
|
double textWidth = paragraph.getMaxIntrinsicWidth(unconstrained);
|
|
double oneLineTextHeight = paragraph.getMinIntrinsicHeight(unconstrained);
|
|
final BoxConstraints constrained = new BoxConstraints(maxWidth: textWidth * 0.9);
|
|
double wrappedTextWidth = paragraph.getMinIntrinsicWidth(unconstrained);
|
|
double twoLinesTextHeight = paragraph.getMinIntrinsicHeight(constrained);
|
|
|
|
// controls
|
|
expect(wrappedTextWidth, lessThan(textWidth));
|
|
expect(paragraph.getMinIntrinsicWidth(unconstrained), equals(wrappedTextWidth));
|
|
expect(paragraph.getMaxIntrinsicWidth(constrained), equals(constrained.maxWidth));
|
|
|
|
expect(oneLineTextHeight, lessThan(twoLinesTextHeight));
|
|
expect(twoLinesTextHeight, lessThan(oneLineTextHeight * 3.0));
|
|
expect(paragraph.getMaxIntrinsicHeight(unconstrained), equals(oneLineTextHeight));
|
|
expect(paragraph.getMaxIntrinsicHeight(constrained), equals(twoLinesTextHeight));
|
|
|
|
// test setup
|
|
RenderBlock testBlock = new RenderBlock(
|
|
children: <RenderBox>[
|
|
paragraph,
|
|
]
|
|
);
|
|
final BoxConstraints empty = new BoxConstraints.tight(Size.zero);
|
|
|
|
// vertical block
|
|
expect(testBlock.getMinIntrinsicWidth(unconstrained), equals(wrappedTextWidth));
|
|
expect(testBlock.getMinIntrinsicWidth(constrained), equals(wrappedTextWidth));
|
|
expect(testBlock.getMaxIntrinsicWidth(unconstrained), equals(textWidth));
|
|
expect(testBlock.getMaxIntrinsicWidth(constrained), equals(constrained.maxWidth));
|
|
expect(testBlock.getMinIntrinsicHeight(unconstrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMinIntrinsicHeight(constrained), equals(twoLinesTextHeight));
|
|
expect(testBlock.getMaxIntrinsicHeight(unconstrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMaxIntrinsicHeight(constrained), equals(twoLinesTextHeight));
|
|
expect(testBlock.getMinIntrinsicWidth(empty), equals(0.0));
|
|
expect(testBlock.getMaxIntrinsicWidth(empty), equals(0.0));
|
|
expect(testBlock.getMinIntrinsicHeight(empty), equals(0.0));
|
|
expect(testBlock.getMaxIntrinsicHeight(empty), equals(0.0));
|
|
|
|
// horizontal block
|
|
testBlock.mainAxis = Axis.horizontal;
|
|
expect(testBlock.getMinIntrinsicWidth(unconstrained), equals(textWidth));
|
|
expect(testBlock.getMinIntrinsicWidth(constrained), equals(constrained.maxWidth));
|
|
expect(testBlock.getMaxIntrinsicWidth(unconstrained), equals(textWidth));
|
|
expect(testBlock.getMaxIntrinsicWidth(constrained), equals(constrained.maxWidth));
|
|
expect(testBlock.getMinIntrinsicHeight(unconstrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMinIntrinsicHeight(constrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMaxIntrinsicHeight(unconstrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMaxIntrinsicHeight(constrained), equals(oneLineTextHeight));
|
|
expect(testBlock.getMinIntrinsicWidth(empty), equals(0.0));
|
|
expect(testBlock.getMaxIntrinsicWidth(empty), equals(0.0));
|
|
expect(testBlock.getMinIntrinsicHeight(empty), equals(0.0));
|
|
expect(testBlock.getMaxIntrinsicHeight(empty), equals(0.0));
|
|
});
|
|
}
|