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Add some tests for these tweens (#4804)

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Adam Barth 2016-07-01 09:46:37 -07:00 committed by GitHub
parent 8cf2c1703e
commit e0f37027ab
1 changed files with 50 additions and 0 deletions
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packages/flutter/test/widget/implicit_animations_test.dart Normal file
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// Copyright 2016 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/widgets.dart';
void main() {
testWidgets('BoxConstraintsTween control test', (WidgetTester tester) async {
BoxConstraintsTween tween = new BoxConstraintsTween(
begin: new BoxConstraints.tight(new Size(20.0, 50.0)),
end: new BoxConstraints.tight(new Size(10.0, 30.0))
);
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 {
DecorationTween tween = new DecorationTween(
begin: new BoxDecoration(backgroundColor: new Color(0xFF00FF00)),
end: new BoxDecoration(backgroundColor: new Color(0xFFFFFF00))
);
BoxDecoration result = tween.lerp(0.25);
expect(result.backgroundColor, new Color(0xFF3FFF00));
});
testWidgets('EdgeInsetsTween control test', (WidgetTester tester) async {
EdgeInsetsTween tween = new EdgeInsetsTween(
begin: new EdgeInsets.symmetric(vertical: 50.0),
end: new EdgeInsets.only(top: 10.0, bottom: 30.0)
);
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 {
Matrix4Tween tween = new Matrix4Tween(
begin: new Matrix4.translationValues(10.0, 20.0, 30.0),
end: new Matrix4.translationValues(14.0, 24.0, 34.0)
);
Matrix4 result = tween.lerp(0.25);
expect(result, equals(new Matrix4.translationValues(11.0, 21.0, 31.0)));
});
}