f06559afed
A CustomOneChildLayout is a widget that lets you perform a custom layout in the simplified setting of sizing and positioning a single child.
60 lines
2.0 KiB
Dart
60 lines
2.0 KiB
Dart
import 'package:flutter/widgets.dart';
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import 'package:test/test.dart';
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import 'widget_tester.dart';
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class TestOneChildLayoutDelegate extends OneChildLayoutDelegate {
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BoxConstraints constraintsFromGetSize;
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BoxConstraints constraintsFromGetConstraintsForChild;
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Size sizeFromGetPositionForChild;
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Size childSizeFromGetPositionForChild;
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Size getSize(BoxConstraints constraints) {
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constraintsFromGetSize = constraints;
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return new Size(200.0, 300.0);
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}
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BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
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constraintsFromGetConstraintsForChild = constraints;
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return new BoxConstraints(
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minWidth: 100.0,
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maxWidth: 150.0,
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minHeight: 200.0,
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maxHeight: 400.0
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);
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}
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Point getPositionForChild(Size size, Size childSize) {
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sizeFromGetPositionForChild = size;
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childSizeFromGetPositionForChild = childSize;
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return Point.origin;
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}
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}
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void main() {
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test('Control test for CustomOneChildLayout', () {
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testWidgets((WidgetTester tester) {
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TestOneChildLayoutDelegate delegate = new TestOneChildLayoutDelegate();
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tester.pumpWidget(new Center(
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child: new CustomOneChildLayout(delegate: delegate, child: new Container())
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));
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expect(delegate.constraintsFromGetSize.minWidth, 0.0);
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expect(delegate.constraintsFromGetSize.maxWidth, 800.0);
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expect(delegate.constraintsFromGetSize.minHeight, 0.0);
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expect(delegate.constraintsFromGetSize.maxHeight, 600.0);
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expect(delegate.constraintsFromGetConstraintsForChild.minWidth, 0.0);
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expect(delegate.constraintsFromGetConstraintsForChild.maxWidth, 800.0);
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expect(delegate.constraintsFromGetConstraintsForChild.minHeight, 0.0);
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expect(delegate.constraintsFromGetConstraintsForChild.maxHeight, 600.0);
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expect(delegate.sizeFromGetPositionForChild.width, 200.0);
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expect(delegate.sizeFromGetPositionForChild.height, 300.0);
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expect(delegate.childSizeFromGetPositionForChild.width, 150.0);
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expect(delegate.childSizeFromGetPositionForChild.height, 400.0);
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});
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});
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}
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