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Add:创建 flutter go web 版

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ryan
2019-08-13 20:38:46 +08:00
parent 64513b59c1
commit da67ccf5a8
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packages/flutter_web/test/rendering/positioned_box_test.dart Normal file
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// 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:test/test.dart';
import 'package:flutter_web/material.dart';
import 'package:flutter_web/rendering.dart';
import 'package:flutter_web_ui/ui.dart';
class RenderDecoratedBox extends RenderProxyBox {
final BoxDecoration decoration;
RenderDecoratedBox({this.decoration});
}
void main() {
test('RenderPositionedBox expands', () {
final RenderConstrainedBox sizer = new RenderConstrainedBox(
additionalConstraints:
new BoxConstraints.tight(const Size(100.0, 100.0)),
child: new RenderDecoratedBox(decoration: const BoxDecoration()));
final RenderPositionedBox positioner =
new RenderPositionedBox(child: sizer);
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(200.0), reason: 'positioner width');
expect(positioner.size.height, equals(200.0), reason: 'positioner height');
});
test('RenderPositionedBox shrink wraps', () {
final RenderConstrainedBox sizer = new RenderConstrainedBox(
additionalConstraints:
new BoxConstraints.tight(const Size(100.0, 100.0)),
child: new RenderDecoratedBox(decoration: const BoxDecoration()));
final RenderPositionedBox positioner =
new RenderPositionedBox(child: sizer, widthFactor: 1.0);
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(100.0), reason: 'positioner width');
expect(positioner.size.height, equals(200.0), reason: 'positioner height');
positioner.widthFactor = null;
positioner.heightFactor = 1.0;
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(200.0), reason: 'positioner width');
expect(positioner.size.height, equals(100.0), reason: 'positioner height');
positioner.widthFactor = 1.0;
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(100.0), reason: 'positioner width');
expect(positioner.size.height, equals(100.0), reason: 'positioner height');
});
test('RenderPositionedBox width and height factors', () {
final RenderConstrainedBox sizer = new RenderConstrainedBox(
additionalConstraints:
new BoxConstraints.tight(const Size(100.0, 100.0)),
child: new RenderDecoratedBox(decoration: const BoxDecoration()));
final RenderPositionedBox positioner = new RenderPositionedBox(
child: sizer, widthFactor: 1.0, heightFactor: 0.0);
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(100.0));
expect(positioner.size.height, equals(0.0));
positioner.widthFactor = 0.5;
positioner.heightFactor = 0.5;
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(50.0));
expect(positioner.size.height, equals(50.0));
positioner.widthFactor = null;
positioner.heightFactor = null;
positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
expect(positioner.size.width, equals(200.0));
expect(positioner.size.height, equals(200.0));
});
}