// Copyright 2015 The Chromium 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_test/flutter_test.dart'; import 'package:flutter/animation.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter/widgets.dart'; import 'package:test/test.dart'; void main() { test('Can animate position data', () { testWidgets((WidgetTester tester) { final AnimatedRelativeRectValue rect = new AnimatedRelativeRectValue( new RelativeRect.fromRect( new Rect.fromLTRB(10.0, 20.0, 20.0, 30.0), new Rect.fromLTRB(0.0, 10.0, 100.0, 110.0) ), end: new RelativeRect.fromRect( new Rect.fromLTRB(80.0, 90.0, 90.0, 100.0), new Rect.fromLTRB(0.0, 10.0, 100.0, 110.0) ), curve: Curves.linear ); final Performance performance = new Performance( duration: const Duration(seconds: 10) ); final List<Size> sizes = <Size>[]; final List<Point> positions = <Point>[]; final GlobalKey key = new GlobalKey(); void recordMetrics() { RenderBox box = key.currentContext.findRenderObject(); BoxParentData boxParentData = box.parentData; sizes.add(box.size); positions.add(boxParentData.position); } tester.pumpWidget( new Center( child: new Container( height: 100.0, width: 100.0, child: new Stack(<Widget>[ new PositionedTransition( rect: rect, performance: performance, child: new Container( key: key ) ) ]) ) ) ); // t=0 recordMetrics(); performance.play(); tester.pump(); // t=0 again recordMetrics(); tester.pump(const Duration(seconds: 1)); // t=1 recordMetrics(); tester.pump(const Duration(seconds: 1)); // t=2 recordMetrics(); tester.pump(const Duration(seconds: 3)); // t=5 recordMetrics(); tester.pump(const Duration(seconds: 5)); // t=10 recordMetrics(); expect(sizes, equals([const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0)])); expect(positions, equals([const Point(10.0, 10.0), const Point(10.0, 10.0), const Point(17.0, 17.0), const Point(24.0, 24.0), const Point(45.0, 45.0), const Point(80.0, 80.0)])); }); }); }