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// 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/material.dart';
import 'package:flutter_test/flutter_test.dart';
class MockOnEndFunction {
int called = 0;
void handler() {
called++;
}
}
const Duration animationDuration = Duration(milliseconds:1000);
const Duration additionalDelay = Duration(milliseconds:1);
void main() {
late MockOnEndFunction mockOnEndFunction;
const Key switchKey = Key('switchKey');
setUp(() {
mockOnEndFunction = MockOnEndFunction();
});
testWidgets('BoxConstraintsTween control test', (WidgetTester tester) async {
final BoxConstraintsTween tween = BoxConstraintsTween(
begin: BoxConstraints.tight(const Size(20.0, 50.0)),
end: BoxConstraints.tight(const Size(10.0, 30.0)),
);
final BoxConstraints result = tween.lerp(0.25);
expect(result.minWidth, 17.5);
expect(result.maxWidth, 17.5);
expect(result.minHeight, 45.0);
expect(result.maxHeight, 45.0);
});
testWidgets('DecorationTween control test', (WidgetTester tester) async {
final DecorationTween tween = DecorationTween(
begin: const BoxDecoration(color: Color(0xFF00FF00)),
end: const BoxDecoration(color: Color(0xFFFFFF00)),
);
final BoxDecoration result = tween.lerp(0.25) as BoxDecoration;
expect(result.color, const Color(0xFF3FFF00));
});
testWidgets('EdgeInsetsTween control test', (WidgetTester tester) async {
final EdgeInsetsTween tween = EdgeInsetsTween(
begin: const EdgeInsets.symmetric(vertical: 50.0),
end: const EdgeInsets.only(top: 10.0, bottom: 30.0),
);
final EdgeInsets result = tween.lerp(0.25);
expect(result.left, 0.0);
expect(result.right, 0.0);
expect(result.top, 40.0);
expect(result.bottom, 45.0);
});
testWidgets('Matrix4Tween control test', (WidgetTester tester) async {
final Matrix4Tween tween = Matrix4Tween(
begin: Matrix4.translationValues(10.0, 20.0, 30.0),
end: Matrix4.translationValues(14.0, 24.0, 34.0),
);
final Matrix4 result = tween.lerp(0.25);
expect(result, equals(Matrix4.translationValues(11.0, 21.0, 31.0)));
});
testWidgets('AnimatedContainer onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedContainerWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedPadding onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedPaddingWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedAlign onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedAlignWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedPositioned onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedPositionedWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedPositionedDirectional onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedPositionedDirectionalWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedOpacity onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedOpacityWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedOpacity transition test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
switchKey: switchKey,
state: _TestAnimatedOpacityWidgetState(),
)
));
final Finder switchFinder = find.byKey(switchKey);
final FadeTransition opacityWidget = tester.widget<FadeTransition>(
find.ancestor(
of: find.byType(Placeholder),
matching: find.byType(FadeTransition),
).first,
);
await tester.tap(switchFinder);
await tester.pump();
expect(opacityWidget.opacity.value, equals(0.0));
await tester.pump(const Duration(milliseconds: 500));
expect(opacityWidget.opacity.value, equals(0.5));
await tester.pump(const Duration(milliseconds: 250));
expect(opacityWidget.opacity.value, equals(0.75));
await tester.pump(const Duration(milliseconds: 250));
expect(opacityWidget.opacity.value, equals(1.0));
});
testWidgets('SliverAnimatedOpacity onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestSliverAnimatedOpacityWidgetState(),
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('SliverAnimatedOpacity transition test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
switchKey: switchKey,
state: _TestSliverAnimatedOpacityWidgetState(),
)
));
final Finder switchFinder = find.byKey(switchKey);
final SliverFadeTransition opacityWidget = tester.widget<SliverFadeTransition>(
find.ancestor(
of: find.byType(Placeholder),
matching: find.byType(SliverFadeTransition),
).first,
);
await tester.tap(switchFinder);
await tester.pump();
expect(opacityWidget.opacity.value, equals(0.0));
await tester.pump(const Duration(milliseconds: 500));
expect(opacityWidget.opacity.value, equals(0.5));
await tester.pump(const Duration(milliseconds: 250));
expect(opacityWidget.opacity.value, equals(0.75));
await tester.pump(const Duration(milliseconds: 250));
expect(opacityWidget.opacity.value, equals(1.0));
});
testWidgets('AnimatedDefaultTextStyle onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedDefaultTextStyleWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedPhysicalModel onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedPhysicalModelWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('TweenAnimationBuilder onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestTweenAnimationBuilderWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
testWidgets('AnimatedTheme onEnd callback test', (WidgetTester tester) async {
await tester.pumpWidget(wrap(
child: TestAnimatedWidget(
callback: mockOnEndFunction.handler,
switchKey: switchKey,
state: _TestAnimatedThemeWidgetState(),
)
));
final Finder widgetFinder = find.byKey(switchKey);
await tester.tap(widgetFinder);
await tester.pump();
expect(mockOnEndFunction.called, 0);
await tester.pump(animationDuration);
expect(mockOnEndFunction.called, 0);
await tester.pump(additionalDelay);
expect(mockOnEndFunction.called, 1);
});
}
Widget wrap({required Widget child}) {
return Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(child: child),
),
);
}
class TestAnimatedWidget extends StatefulWidget {
const TestAnimatedWidget({
Key? key,
this.callback,
required this.switchKey,
required this.state,
}) : super(key: key);
final VoidCallback? callback;
final Key switchKey;
final State<StatefulWidget> state;
@override
State<StatefulWidget> createState() => state; // ignore: no_logic_in_create_state, this test predates the lint
}
abstract class _TestAnimatedWidgetState extends State<TestAnimatedWidget> {
bool toggle = false;
final Widget child = const Placeholder();
final Duration duration = animationDuration;
void onChanged(bool v) {
setState(() {
toggle = v;
});
}
Widget getAnimatedWidget();
@override
Widget build(BuildContext context) {
final Widget animatedWidget = getAnimatedWidget();
return Stack(
children: <Widget>[
animatedWidget,
Switch(key: widget.switchKey, value: toggle, onChanged: onChanged),
],
);
}
}
class _TestAnimatedContainerWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedContainer(
child: child,
duration: duration,
onEnd: widget.callback,
width: toggle ? 10 : 20,
);
}
}
class _TestAnimatedPaddingWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedPadding(
child: child,
duration: duration,
onEnd: widget.callback,
padding:
toggle ? const EdgeInsets.all(8.0) : const EdgeInsets.all(16.0),
);
}
}
class _TestAnimatedAlignWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedAlign(
child: child,
duration: duration,
onEnd: widget.callback,
alignment: toggle ? Alignment.topLeft : Alignment.bottomRight,
);
}
}
class _TestAnimatedPositionedWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedPositioned(
child: child,
duration: duration,
onEnd: widget.callback,
left: toggle ? 10 : 20,
);
}
}
class _TestAnimatedPositionedDirectionalWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedPositionedDirectional(
child: child,
duration: duration,
onEnd: widget.callback,
start: toggle ? 10 : 20,
);
}
}
class _TestAnimatedOpacityWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedOpacity(
child: child,
duration: duration,
onEnd: widget.callback,
opacity: toggle ? 1.0 : 0.0,
);
}
}
class _TestSliverAnimatedOpacityWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return SliverAnimatedOpacity(
sliver: SliverToBoxAdapter(child: child),
duration: duration,
onEnd: widget.callback,
opacity: toggle ? 1.0 : 0.0,
);
}
@override
Widget build(BuildContext context) {
final Widget animatedWidget = getAnimatedWidget();
return Material(
child: Directionality(
textDirection: TextDirection.ltr,
child: CustomScrollView(
slivers: <Widget>[
animatedWidget,
SliverToBoxAdapter(
child: Switch(
key: widget.switchKey,
value: toggle,
onChanged: onChanged,
),
),
],
),
),
);
}
}
class _TestAnimatedDefaultTextStyleWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedDefaultTextStyle(
child: child,
duration: duration,
onEnd: widget.callback,
style: toggle
? const TextStyle(fontStyle: FontStyle.italic)
: const TextStyle(fontStyle: FontStyle.normal));
}
}
class _TestAnimatedPhysicalModelWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedPhysicalModel(
child: child,
duration: duration,
onEnd: widget.callback,
color: toggle ? Colors.red : Colors.green,
elevation: 0,
shadowColor: Colors.blue,
shape: BoxShape.rectangle,
);
}
}
class _TestTweenAnimationBuilderWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return TweenAnimationBuilder<double>(
child: child,
tween: Tween<double>(begin: 1, end: 2),
duration: duration,
onEnd: widget.callback,
builder: (BuildContext context, double? size, Widget? child) {
return Container(
child: child,
width: size,
height: size,
);
},
);
}
}
class _TestAnimatedThemeWidgetState extends _TestAnimatedWidgetState {
@override
Widget getAnimatedWidget() {
return AnimatedTheme(
child: child,
data: toggle ? ThemeData.dark() : ThemeData.light(),
duration: duration,
onEnd: widget.callback,
);
}
}