blob: 14ad68cd93ea1889634e282e3e931f90831a5f11 [file] [log] [blame]
// 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 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
Widget _boilerplate(VoidCallback onButtonPressed, {
int itemCount = 100,
double initialChildSize = .5,
double maxChildSize = 1.0,
double minChildSize = .25,
double itemExtent,
Key containerKey,
NotificationListenerCallback<ScrollNotification> onScrollNotification,
}) {
return Directionality(
textDirection: TextDirection.ltr,
child: Stack(
children: <Widget>[
FlatButton(
child: const Text('TapHere'),
onPressed: onButtonPressed,
),
DraggableScrollableSheet(
maxChildSize: maxChildSize,
minChildSize: minChildSize,
initialChildSize: initialChildSize,
builder: (BuildContext context, ScrollController scrollController) {
return NotificationListener<ScrollNotification>(
onNotification: onScrollNotification,
child: Container(
key: containerKey,
color: const Color(0xFFABCDEF),
child: ListView.builder(
controller: scrollController,
itemExtent: itemExtent,
itemCount: itemCount,
itemBuilder: (BuildContext context, int index) => Text('Item $index'),
),
),
);
},
),
],
),
);
}
testWidgets('Scrolls correct amount when maxChildSize < 1.0', (WidgetTester tester) async {
const Key key = ValueKey<String>('container');
await tester.pumpWidget(_boilerplate(
null,
maxChildSize: .6,
initialChildSize: .25,
itemExtent: 25.0,
containerKey: key,
));
expect(tester.getRect(find.byKey(key)), const Rect.fromLTRB(0.0, 450.0, 800.0, 600.0));
await tester.drag(find.text('Item 5'), const Offset(0, -125));
await tester.pumpAndSettle();
expect(tester.getRect(find.byKey(key)), const Rect.fromLTRB(0.0, 325.0, 800.0, 600.0));
});
testWidgets('Scrolls correct amount when maxChildSize == 1.0', (WidgetTester tester) async {
const Key key = ValueKey<String>('container');
await tester.pumpWidget(_boilerplate(
null,
maxChildSize: 1.0,
initialChildSize: .25,
itemExtent: 25.0,
containerKey: key,
));
expect(tester.getRect(find.byKey(key)), const Rect.fromLTRB(0.0, 450.0, 800.0, 600.0));
await tester.drag(find.text('Item 5'), const Offset(0, -125));
await tester.pumpAndSettle();
expect(tester.getRect(find.byKey(key)), const Rect.fromLTRB(0.0, 325.0, 800.0, 600.0));
});
for (final TargetPlatform platform in TargetPlatform.values) {
group('$platform Scroll Physics', () {
debugDefaultTargetPlatformOverride = platform;
testWidgets('Can be dragged up without covering its container', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 31'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, -200));
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 31'), findsOneWidget);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be dragged down when not full height', (WidgetTester tester) async {
await tester.pumpWidget(_boilerplate(null));
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, 325));
await tester.pumpAndSettle();
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 36'), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be dragged down when list is shorter than full height', (WidgetTester tester) async {
await tester.pumpWidget(_boilerplate(null, itemCount: 30, initialChildSize: .25));
expect(find.text('Item 1').hitTestable(), findsOneWidget);
expect(find.text('Item 29').hitTestable(), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, -325));
await tester.pumpAndSettle();
expect(find.text('Item 1').hitTestable(), findsOneWidget);
expect(find.text('Item 29').hitTestable(), findsOneWidget);
await tester.drag(find.text('Item 1'), const Offset(0, 325));
await tester.pumpAndSettle();
expect(find.text('Item 1').hitTestable(), findsOneWidget);
expect(find.text('Item 29').hitTestable(), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be dragged up and cover its container and scroll in single motion, and then dragged back down', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, -325));
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsOneWidget);
await tester.dragFrom(const Offset(20, 20), const Offset(0, 325));
await tester.pumpAndSettle();
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 18'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be flung up gently', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 350);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be flung up', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsNothing);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsOneWidget);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be flung down when not full height', (WidgetTester tester) async {
await tester.pumpWidget(_boilerplate(null));
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, 325), 2000);
await tester.pumpAndSettle();
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 36'), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
testWidgets('Can be flung up and then back down', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsNothing);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsOneWidget);
await tester.fling(find.text('Item 70'), const Offset(0, 200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, 200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsNothing);
}, skip: isBrowser, variant: TargetPlatformVariant.all());
debugDefaultTargetPlatformOverride = null;
});
testWidgets('ScrollNotification correctly dispatched when flung without covering its container', (WidgetTester tester) async {
final List<Type> notificationTypes = <Type>[];
await tester.pumpWidget(_boilerplate(
null,
onScrollNotification: (ScrollNotification notification) {
notificationTypes.add(notification.runtimeType);
return false;
},
));
await tester.fling(find.text('Item 1'), const Offset(0, -200), 200);
await tester.pumpAndSettle();
// TODO(itome): Make sure UserScrollNotification and ScrollUpdateNotification are called correctly.
final List<Type> types = <Type>[
ScrollStartNotification,
ScrollEndNotification,
];
expect(notificationTypes, equals(types));
});
testWidgets('ScrollNotification correctly dispatched when flung with contents scroll', (WidgetTester tester) async {
final List<Type> notificationTypes = <Type>[];
await tester.pumpWidget(_boilerplate(
null,
onScrollNotification: (ScrollNotification notification) {
notificationTypes.add(notification.runtimeType);
return false;
},
));
await tester.flingFrom(const Offset(0, 325), const Offset(0, -325), 200);
await tester.pumpAndSettle();
final List<Type> types = <Type>[
ScrollStartNotification,
UserScrollNotification,
...List<Type>.filled(5, ScrollUpdateNotification),
ScrollEndNotification,
UserScrollNotification,
];
expect(notificationTypes, types);
});
}
}