| // Copyright 2013 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 = 2.6 |
| import 'package:ui/ui.dart'; |
| |
| import 'package:test/test.dart'; |
| |
| void main() { |
| test('Gradient.radial with no focal point', () { |
| expect( |
| Gradient.radial( |
| Offset.zero, |
| null, |
| <Color>[const Color(0xFFFFFFFF), const Color(0xFFFFFFFF)], |
| <double>[0.0, 1.0], |
| TileMode.mirror), |
| isNotNull, |
| ); |
| }); |
| |
| // this is just a radial gradient, focal point is discarded. |
| test('radial center and focal == Offset.zero and focalRadius == 0.0 is ok', |
| () { |
| expect( |
| () => Gradient.radial( |
| Offset.zero, |
| 0.0, |
| <Color>[const Color(0xFFFFFFFF), const Color(0xFFFFFFFF)], |
| <double>[0.0, 1.0], |
| TileMode.mirror, |
| null, |
| Offset.zero, |
| 0.0, |
| ), |
| isNotNull); |
| }); |
| |
| test('radial center != focal and focalRadius == 0.0 is ok', () { |
| expect( |
| () => Gradient.radial( |
| Offset.zero, |
| 0.0, |
| <Color>[const Color(0xFFFFFFFF), const Color(0xFFFFFFFF)], |
| <double>[0.0, 1.0], |
| TileMode.mirror, |
| null, |
| const Offset(2.0, 2.0), |
| 0.0, |
| ), |
| isNotNull); |
| }); |
| |
| // this would result in div/0 on skia side. |
| test('radial center and focal == Offset.zero and focalRadius != 0.0 assert', |
| () { |
| expect( |
| () => Gradient.radial( |
| Offset.zero, |
| 0.0, |
| <Color>[const Color(0xFFFFFFFF), const Color(0xFFFFFFFF)], |
| <double>[0.0, 1.0], |
| TileMode.mirror, |
| null, |
| Offset.zero, |
| 1.0, |
| ), |
| throwsA(const TypeMatcher<AssertionError>()), |
| ); |
| }); |
| } |