555138e60e
In the old world, we had two ways to bind a Widget tree to a
RenderObject node, one way for RenderView and one mostly untested way
for other cases (it's only tested by the spinning_mixed.dart demo). For
fn3, I made these the same code path.
This patch also introduces GlobalKey, though the GlobalKey logic isn't
hooked in yet.
This is Hello World in the new world:
```dart
import 'package:sky/src/fn3.dart';
void main() {
runApp(new Text('Hello World!'));
}
```
75 lines
2.0 KiB
Dart
75 lines
2.0 KiB
Dart
import 'package:sky/rendering.dart';
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import 'package:sky/src/fn3.dart';
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import 'package:test/test.dart';
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import 'widget_tester.dart';
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import 'test_widgets.dart';
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void main() {
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test('Stateful component smoke test', () {
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WidgetTester tester = new WidgetTester();
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void checkTree(BoxDecoration expectedDecoration) {
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OneChildRenderObjectElement element =
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tester.findElement((element) => element is OneChildRenderObjectElement);
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expect(element, isNotNull);
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expect(element.renderObject is RenderDecoratedBox, isTrue);
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RenderDecoratedBox renderObject = element.renderObject;
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expect(renderObject.decoration, equals(expectedDecoration));
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}
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tester.pumpFrame(
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new FlipComponent(
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left: new DecoratedBox(decoration: kBoxDecorationA),
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right: new DecoratedBox(decoration: kBoxDecorationB)
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)
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);
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checkTree(kBoxDecorationA);
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tester.pumpFrame(
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new FlipComponent(
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left: new DecoratedBox(decoration: kBoxDecorationB),
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right: new DecoratedBox(decoration: kBoxDecorationA)
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)
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);
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checkTree(kBoxDecorationB);
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flipStatefulComponent(tester);
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tester.pumpFrameWithoutChange();
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checkTree(kBoxDecorationA);
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tester.pumpFrame(
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new FlipComponent(
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left: new DecoratedBox(decoration: kBoxDecorationA),
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right: new DecoratedBox(decoration: kBoxDecorationB)
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)
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);
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checkTree(kBoxDecorationB);
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});
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test('Don\'t rebuild subcomponents', () {
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WidgetTester tester = new WidgetTester();
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tester.pumpFrame(
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new FlipComponent(
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key: new Key('rebuild test'), // this is so we don't get the state from the TestComponentConfig in the last test, but instead instantiate a new element with a new state.
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left: new TestBuildCounter(),
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right: new DecoratedBox(decoration: kBoxDecorationB)
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)
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);
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expect(TestBuildCounter.buildCount, equals(1));
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flipStatefulComponent(tester);
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tester.pumpFrameWithoutChange();
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expect(TestBuildCounter.buildCount, equals(1));
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});
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}
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