| // 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. |
| |
| import 'dart:async'; |
| import 'dart:ui'; |
| |
| import 'package:litetest/litetest.dart'; |
| |
| void main() { |
| test('Image constructor and dispose invokes onCreate once', () async { |
| // We test constructor and dispose in one test because |
| // litetest runs the tests in parallel and static handlers |
| // are shared between tests. |
| |
| int onCreateInvokedCount = 0; |
| Image? createdImage; |
| int onDisposeInvokedCount = 0; |
| Image? disposedImage; |
| Image.onCreate = (Image image) { |
| onCreateInvokedCount++; |
| createdImage = image; |
| }; |
| Image.onDispose = (Image image) { |
| onDisposeInvokedCount++; |
| disposedImage = image; |
| }; |
| |
| final Image image1 = await _createImage()..dispose(); |
| |
| expect(onCreateInvokedCount, 1); |
| expect(createdImage, image1); |
| expect(onDisposeInvokedCount, 1); |
| expect(disposedImage, image1); |
| |
| final Image image2 = await _createImage()..dispose(); |
| |
| expect(onCreateInvokedCount, 2); |
| expect(createdImage, image2); |
| expect(onDisposeInvokedCount, 2); |
| expect(disposedImage, image2); |
| |
| Image.onCreate = null; |
| Image.onDispose = null; |
| }); |
| } |
| |
| Future<Image> _createImage() => _createPicture().toImage(10, 10); |
| |
| Picture _createPicture() { |
| final PictureRecorder recorder = PictureRecorder(); |
| final Canvas canvas = Canvas(recorder); |
| const Rect rect = Rect.fromLTWH(0.0, 0.0, 100.0, 100.0); |
| canvas.clipRect(rect); |
| return recorder.endRecording(); |
| } |