// 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. // @dart = 2.8 import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter/widgets.dart'; void main() { testWidgets('AnimatedPadding.debugFillProperties', (WidgetTester tester) async { final AnimatedPadding padding = AnimatedPadding( padding: const EdgeInsets.all(7.0), curve: Curves.ease, duration: const Duration(milliseconds: 200), ); expect(padding, hasOneLineDescription); }); testWidgets('AnimatedPadding padding visual-to-directional animation', (WidgetTester tester) async { final Key target = UniqueKey(); await tester.pumpWidget( Directionality( textDirection: TextDirection.rtl, child: AnimatedPadding( duration: const Duration(milliseconds: 200), padding: const EdgeInsets.only(right: 50.0), child: SizedBox.expand(key: target), ), ), ); expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0)); await tester.pumpWidget( Directionality( textDirection: TextDirection.rtl, child: AnimatedPadding( duration: const Duration(milliseconds: 200), padding: const EdgeInsetsDirectional.only(start: 100.0), child: SizedBox.expand(key: target), ), ), ); expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0)); await tester.pump(const Duration(milliseconds: 100)); expect(tester.getSize(find.byKey(target)), const Size(725.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(725.0, 0.0)); await tester.pump(const Duration(milliseconds: 500)); expect(tester.getSize(find.byKey(target)), const Size(700.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(700.0, 0.0)); }); testWidgets('AnimatedPadding animated padding clamped to positive values', (WidgetTester tester) async { final Key target = UniqueKey(); await tester.pumpWidget( Directionality( textDirection: TextDirection.rtl, child: AnimatedPadding( curve: Curves.easeInOutBack, // will cause negative padding during overshoot duration: const Duration(milliseconds: 200), padding: const EdgeInsets.only(right: 50.0), child: SizedBox.expand(key: target), ), ), ); expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0)); await tester.pumpWidget( Directionality( textDirection: TextDirection.rtl, child: AnimatedPadding( curve: Curves.easeInOutBack, duration: const Duration(milliseconds: 200), padding: const EdgeInsets.only(right: 0.0), child: SizedBox.expand(key: target), ), ), ); expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0)); await tester.pump(const Duration(milliseconds: 128)); // Curve would have made the padding negative a this point if it is not clamped. expect(tester.getSize(find.byKey(target)), const Size(800.0, 600.0)); expect(tester.getTopRight(find.byKey(target)), const Offset(800.0, 0.0)); }); }