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bef55951a5
If there are no other gestures in the arena, we should kick off the scroll gesture right away. This change pulled a refactoring of how we dispatch events to Widgets. Now we dispatch events to Widgets interleaved with their associated RenderObjects. (Previously we dispatched to all of the RenderObjects first.)
59 lines
1.6 KiB
Dart
59 lines
1.6 KiB
Dart
import 'package:sky/widgets.dart';
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import 'package:test/test.dart';
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import '../engine/mock_events.dart';
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import 'widget_tester.dart';
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void main() {
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test('Uncontested scrolls start immediately', () {
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WidgetTester tester = new WidgetTester();
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TestPointer pointer = new TestPointer(7);
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bool didStartScroll = false;
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double updatedScrollDelta;
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bool didEndScroll = false;
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Widget builder() {
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return new GestureDetector(
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onVerticalScrollStart: () {
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didStartScroll = true;
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},
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onVerticalScrollUpdate: (double scrollDelta) {
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updatedScrollDelta = scrollDelta;
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},
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onVerticalScrollEnd: () {
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didEndScroll = true;
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},
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child: new Container()
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);
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}
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tester.pumpFrame(builder);
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expect(didStartScroll, isFalse);
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expect(updatedScrollDelta, isNull);
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expect(didEndScroll, isFalse);
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Point firstLocation = new Point(10.0, 10.0);
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tester.dispatchEvent(pointer.down(firstLocation), firstLocation);
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expect(didStartScroll, isTrue);
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didStartScroll = false;
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expect(updatedScrollDelta, isNull);
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expect(didEndScroll, isFalse);
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Point secondLocation = new Point(10.0, 9.0);
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tester.dispatchEvent(pointer.move(secondLocation), secondLocation);
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expect(didStartScroll, isFalse);
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expect(updatedScrollDelta, 1.0);
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updatedScrollDelta = null;
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expect(didEndScroll, isFalse);
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tester.dispatchEvent(pointer.up(), secondLocation);
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expect(didStartScroll, isFalse);
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expect(updatedScrollDelta, isNull);
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expect(didEndScroll, isTrue);
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didEndScroll = false;
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tester.pumpFrame(() => new Container());
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});
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}
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