195 lines
9.0 KiB
Dart
195 lines
9.0 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import 'dart:async';
|
|
|
|
import 'package:flutter/widgets.dart';
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
|
|
Widget _buildScroller({ required List<String> log }) {
|
|
return NotificationListener<ScrollNotification>(
|
|
onNotification: (ScrollNotification notification) {
|
|
if (notification is ScrollStartNotification) {
|
|
log.add('scroll-start');
|
|
} else if (notification is ScrollUpdateNotification) {
|
|
log.add('scroll-update');
|
|
} else if (notification is ScrollEndNotification) {
|
|
log.add('scroll-end');
|
|
}
|
|
return false;
|
|
},
|
|
child: const SingleChildScrollView(
|
|
child: SizedBox(width: 1000.0, height: 1000.0),
|
|
),
|
|
);
|
|
}
|
|
|
|
void main() {
|
|
Completer<void> animateTo(WidgetTester tester, double newScrollOffset, { required Duration duration }) {
|
|
final Completer<void> completer = Completer<void>();
|
|
final ScrollableState scrollable = tester.state(find.byType(Scrollable));
|
|
scrollable.position.animateTo(newScrollOffset, duration: duration, curve: Curves.linear).whenComplete(completer.complete);
|
|
return completer;
|
|
}
|
|
|
|
void jumpTo(WidgetTester tester, double newScrollOffset) {
|
|
final ScrollableState scrollable = tester.state(find.byType(Scrollable));
|
|
scrollable.position.jumpTo(newScrollOffset);
|
|
}
|
|
|
|
testWidgets('Scroll event drag', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
final TestGesture gesture = await tester.startGesture(const Offset(100.0, 100.0));
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await gesture.moveBy(const Offset(-10.0, -10.0));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
await gesture.up();
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end']));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end']));
|
|
});
|
|
|
|
testWidgets('Scroll animateTo', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
final Completer<void> completer = animateTo(tester, 100.0, duration: const Duration(seconds: 1));
|
|
expect(completer.isCompleted, isFalse);
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
await tester.pump(const Duration(milliseconds: 1500));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-update', 'scroll-end']));
|
|
expect(completer.isCompleted, isTrue);
|
|
});
|
|
|
|
testWidgets('Scroll jumpTo', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
jumpTo(tester, 100.0);
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end']));
|
|
await tester.pump();
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end']));
|
|
});
|
|
|
|
testWidgets('Scroll jumpTo during animation', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
final Completer<void> completer = animateTo(tester, 100.0, duration: const Duration(seconds: 1));
|
|
expect(completer.isCompleted, isFalse);
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
expect(completer.isCompleted, isFalse);
|
|
|
|
jumpTo(tester, 100.0);
|
|
expect(completer.isCompleted, isFalse);
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end', 'scroll-start', 'scroll-update', 'scroll-end']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end', 'scroll-start', 'scroll-update', 'scroll-end']));
|
|
expect(completer.isCompleted, isTrue);
|
|
await tester.pump(const Duration(milliseconds: 1500));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-end', 'scroll-start', 'scroll-update', 'scroll-end']));
|
|
expect(completer.isCompleted, isTrue);
|
|
});
|
|
|
|
testWidgets('Scroll scrollTo during animation', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
Completer<void> completer = animateTo(tester, 100.0, duration: const Duration(seconds: 1));
|
|
expect(completer.isCompleted, isFalse);
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
expect(completer.isCompleted, isFalse);
|
|
|
|
completer = animateTo(tester, 100.0, duration: const Duration(seconds: 1));
|
|
expect(completer.isCompleted, isFalse);
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
await tester.pump(const Duration(milliseconds: 100));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update']));
|
|
await tester.pump(const Duration(milliseconds: 1500));
|
|
expect(log, equals(<String>['scroll-start', 'scroll-update', 'scroll-update', 'scroll-end']));
|
|
expect(completer.isCompleted, isTrue);
|
|
});
|
|
|
|
testWidgets('fling, fling generates two start/end pairs', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
// The ideal behavior here would be a single start/end pair, but for
|
|
// simplicity of implementation we compromise here and accept two. Should
|
|
// you find a way to make this work with just one without complicating the
|
|
// API, feel free to change the expectation here.
|
|
|
|
expect(log, equals(<String>[]));
|
|
await tester.flingFrom(const Offset(100.0, 100.0), const Offset(-50.0, -50.0), 500.0);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.flingFrom(const Offset(100.0, 100.0), const Offset(-50.0, -50.0), 500.0);
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start', 'scroll-end', 'scroll-start']));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start', 'scroll-end', 'scroll-start', 'scroll-end']));
|
|
});
|
|
|
|
testWidgets('fling, pause, fling generates two start/end pairs', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
await tester.flingFrom(const Offset(100.0, 100.0), const Offset(-50.0, -50.0), 500.0);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start']));
|
|
await tester.pump(const Duration(minutes: 1));
|
|
await tester.flingFrom(const Offset(100.0, 100.0), const Offset(-50.0, -50.0), 500.0);
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start', 'scroll-end', 'scroll-start']));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log, equals(<String>['scroll-start', 'scroll-end', 'scroll-start', 'scroll-end']));
|
|
});
|
|
|
|
testWidgets('fling up ends', (WidgetTester tester) async {
|
|
final List<String> log = <String>[];
|
|
await tester.pumpWidget(_buildScroller(log: log));
|
|
|
|
expect(log, equals(<String>[]));
|
|
await tester.flingFrom(const Offset(100.0, 100.0), const Offset(50.0, 50.0), 500.0);
|
|
await tester.pump(const Duration(seconds: 1));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
await tester.pump(const Duration(seconds: 1));
|
|
expect(log.first, equals('scroll-start'));
|
|
expect(log.last, equals('scroll-end'));
|
|
log.removeWhere((String value) => value == 'scroll-update');
|
|
expect(log.length, equals(2));
|
|
expect(tester.state<ScrollableState>(find.byType(Scrollable)).position.pixels, equals(0.0));
|
|
});
|
|
}
|