flutter/packages/unit/test/widget/custom_multi_child_layout_test.dart

62 lines
2.2 KiB
Dart

import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';
import 'package:test/test.dart';
import 'widget_tester.dart';
class TestMultiChildLayoutDelegate extends MultiChildLayoutDelegate {
BoxConstraints getSizeConstraints;
Size getSize(BoxConstraints constraints) {
getSizeConstraints = constraints;
return new Size(200.0, 300.0);
}
Size performLayoutSize;
BoxConstraints performLayoutConstraints;
Size performLayoutSize0;
Size performLayoutSize1;
bool performLayoutIsChild;
void performLayout(Size size, BoxConstraints constraints) {
performLayoutSize = size;
performLayoutConstraints = constraints;
performLayoutSize0 = layoutChild(0, constraints);
performLayoutSize1 = layoutChild(1, constraints);
performLayoutIsChild = isChild('fred');
}
}
void main() {
test('Control test for CustomMultiChildLayout', () {
testWidgets((WidgetTester tester) {
TestMultiChildLayoutDelegate delegate = new TestMultiChildLayoutDelegate();
tester.pumpWidget(new Center(
child: new CustomMultiChildLayout([
new LayoutId(id: 0, child: new Container(width: 150.0, height: 100.0)),
new LayoutId(id: 1, child: new Container(width: 100.0, height: 200.0))
],
delegate: delegate
)
));
expect(delegate.getSizeConstraints.minWidth, 0.0);
expect(delegate.getSizeConstraints.maxWidth, 800.0);
expect(delegate.getSizeConstraints.minHeight, 0.0);
expect(delegate.getSizeConstraints.maxHeight, 600.0);
expect(delegate.performLayoutSize.width, 200.0);
expect(delegate.performLayoutSize.height, 300.0);
expect(delegate.performLayoutConstraints.minWidth, 0.0);
expect(delegate.performLayoutConstraints.maxWidth, 800.0);
expect(delegate.performLayoutConstraints.minHeight, 0.0);
expect(delegate.performLayoutConstraints.maxHeight, 600.0);
expect(delegate.performLayoutSize0.width, 150.0);
expect(delegate.performLayoutSize0.height, 100.0);
expect(delegate.performLayoutSize1.width, 100.0);
expect(delegate.performLayoutSize1.height, 200.0);
expect(delegate.performLayoutIsChild, false);
});
});
}