mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
126 lines
3.6 KiB
Dart
126 lines
3.6 KiB
Dart
import 'package:flutter/widgets.dart';
|
|
import 'package:test/test.dart';
|
|
|
|
import '../engine/mock_events.dart';
|
|
import 'widget_tester.dart';
|
|
|
|
void main() {
|
|
test('Uncontested scrolls start immediately', () {
|
|
testWidgets((WidgetTester tester) {
|
|
TestPointer pointer = new TestPointer(7);
|
|
|
|
bool didStartDrag = false;
|
|
double updatedDragDelta;
|
|
bool didEndDrag = false;
|
|
|
|
Widget widget = new GestureDetector(
|
|
onVerticalDragStart: () {
|
|
didStartDrag = true;
|
|
},
|
|
onVerticalDragUpdate: (double scrollDelta) {
|
|
updatedDragDelta = scrollDelta;
|
|
},
|
|
onVerticalDragEnd: (Offset velocity) {
|
|
didEndDrag = true;
|
|
},
|
|
child: new Container()
|
|
);
|
|
|
|
tester.pumpWidget(widget);
|
|
expect(didStartDrag, isFalse);
|
|
expect(updatedDragDelta, isNull);
|
|
expect(didEndDrag, isFalse);
|
|
|
|
Point firstLocation = new Point(10.0, 10.0);
|
|
tester.dispatchEvent(pointer.down(firstLocation), firstLocation);
|
|
expect(didStartDrag, isTrue);
|
|
didStartDrag = false;
|
|
expect(updatedDragDelta, isNull);
|
|
expect(didEndDrag, isFalse);
|
|
|
|
Point secondLocation = new Point(10.0, 9.0);
|
|
tester.dispatchEvent(pointer.move(secondLocation), firstLocation);
|
|
expect(didStartDrag, isFalse);
|
|
expect(updatedDragDelta, -1.0);
|
|
updatedDragDelta = null;
|
|
expect(didEndDrag, isFalse);
|
|
|
|
tester.dispatchEvent(pointer.up(), firstLocation);
|
|
expect(didStartDrag, isFalse);
|
|
expect(updatedDragDelta, isNull);
|
|
expect(didEndDrag, isTrue);
|
|
didEndDrag = false;
|
|
|
|
tester.pumpWidget(new Container());
|
|
});
|
|
});
|
|
|
|
test('Match two scroll gestures in succession', () {
|
|
testWidgets((WidgetTester tester) {
|
|
TestPointer pointer = new TestPointer(7);
|
|
|
|
int gestureCount = 0;
|
|
double dragDistance = 0.0;
|
|
|
|
Point downLocation = new Point(10.0, 10.0);
|
|
Point upLocation = new Point(10.0, 20.0);
|
|
|
|
Widget widget = new GestureDetector(
|
|
onVerticalDragUpdate: (double delta) { dragDistance += delta; },
|
|
onVerticalDragEnd: (Offset velocity) { gestureCount += 1; },
|
|
onHorizontalDragUpdate: (_) { fail("gesture should not match"); },
|
|
onHorizontalDragEnd: (Offset velocity) { fail("gesture should not match"); },
|
|
child: new Container()
|
|
);
|
|
tester.pumpWidget(widget);
|
|
|
|
tester.dispatchEvent(pointer.down(downLocation), downLocation);
|
|
tester.dispatchEvent(pointer.move(upLocation), downLocation);
|
|
tester.dispatchEvent(pointer.up(), downLocation);
|
|
|
|
tester.dispatchEvent(pointer.down(downLocation), downLocation);
|
|
tester.dispatchEvent(pointer.move(upLocation), downLocation);
|
|
tester.dispatchEvent(pointer.up(), downLocation);
|
|
|
|
expect(gestureCount, 2);
|
|
expect(dragDistance, 20.0);
|
|
|
|
tester.pumpWidget(new Container());
|
|
});
|
|
});
|
|
|
|
test('Pan doesn\'t crash', () {
|
|
testWidgets((WidgetTester tester) {
|
|
bool didStartPan = false;
|
|
Offset panDelta;
|
|
bool didEndPan = false;
|
|
|
|
tester.pumpWidget(
|
|
new GestureDetector(
|
|
onPanStart: () {
|
|
didStartPan = true;
|
|
},
|
|
onPanUpdate: (Offset delta) {
|
|
panDelta = delta;
|
|
},
|
|
onPanEnd: (_) {
|
|
didEndPan = true;
|
|
},
|
|
child: new Container()
|
|
)
|
|
);
|
|
|
|
expect(didStartPan, isFalse);
|
|
expect(panDelta, isNull);
|
|
expect(didEndPan, isFalse);
|
|
|
|
tester.scrollAt(new Point(10.0, 10.0), new Offset(20.0, 30.0));
|
|
|
|
expect(didStartPan, isTrue);
|
|
expect(panDelta.dx, 20.0);
|
|
expect(panDelta.dy, 30.0);
|
|
expect(didEndPan, isTrue);
|
|
});
|
|
});
|
|
}
|