|
| 1 | +// Mock Canvas API for Vitest |
| 2 | +import { vi } from 'vitest' |
| 3 | + |
| 4 | +// Mock HTMLCanvasElement.getContext |
| 5 | +Object.defineProperty(HTMLCanvasElement.prototype, 'getContext', { |
| 6 | + value: vi.fn(() => ({ |
| 7 | + fillRect: vi.fn(), |
| 8 | + clearRect: vi.fn(), |
| 9 | + getImageData: vi.fn(() => ({ |
| 10 | + data: new Array(4) |
| 11 | + })), |
| 12 | + putImageData: vi.fn(), |
| 13 | + createImageData: vi.fn(() => []), |
| 14 | + setTransform: vi.fn(), |
| 15 | + drawImage: vi.fn(), |
| 16 | + save: vi.fn(), |
| 17 | + fillText: vi.fn(), |
| 18 | + restore: vi.fn(), |
| 19 | + beginPath: vi.fn(), |
| 20 | + moveTo: vi.fn(), |
| 21 | + lineTo: vi.fn(), |
| 22 | + closePath: vi.fn(), |
| 23 | + stroke: vi.fn(), |
| 24 | + translate: vi.fn(), |
| 25 | + scale: vi.fn(), |
| 26 | + rotate: vi.fn(), |
| 27 | + arc: vi.fn(), |
| 28 | + fill: vi.fn(), |
| 29 | + measureText: vi.fn(() => ({ width: 0 })), |
| 30 | + transform: vi.fn(), |
| 31 | + rect: vi.fn(), |
| 32 | + clip: vi.fn() |
| 33 | + })), |
| 34 | + writable: true, |
| 35 | + configurable: true |
| 36 | +}) |
| 37 | + |
| 38 | +// Mock HTMLCanvasElement.toDataURL |
| 39 | +Object.defineProperty(HTMLCanvasElement.prototype, 'toDataURL', { |
| 40 | + value: vi.fn(() => 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg=='), |
| 41 | + writable: true, |
| 42 | + configurable: true |
| 43 | +}) |
| 44 | + |
| 45 | +// Mock HTMLCanvasElement.toBlob |
| 46 | +Object.defineProperty(HTMLCanvasElement.prototype, 'toBlob', { |
| 47 | + value: vi.fn((callback) => { |
| 48 | + const blob = new Blob([''], { type: 'image/png' }) |
| 49 | + callback(blob) |
| 50 | + }), |
| 51 | + writable: true, |
| 52 | + configurable: true |
| 53 | +}) |
| 54 | + |
| 55 | +// Mock window.devicePixelRatio |
| 56 | +Object.defineProperty(window, 'devicePixelRatio', { |
| 57 | + value: 1, |
| 58 | + writable: true, |
| 59 | + configurable: true |
| 60 | +}) |
| 61 | + |
| 62 | +// Mock Image constructor |
| 63 | +global.Image = class MockImage { |
| 64 | + onload: (() => void) | null = null |
| 65 | + onerror: (() => void) | null = null |
| 66 | + src = '' |
| 67 | + crossOrigin = '' |
| 68 | + referrerPolicy = '' |
| 69 | + width = 0 |
| 70 | + height = 0 |
| 71 | + |
| 72 | + constructor() { |
| 73 | + setTimeout(() => { |
| 74 | + if (this.onload) { |
| 75 | + this.onload() |
| 76 | + } |
| 77 | + }, 0) |
| 78 | + } |
| 79 | +} as any |
| 80 | + |
| 81 | +// Mock createImageBitmap |
| 82 | +global.createImageBitmap = vi.fn(() => Promise.resolve({ |
| 83 | + width: 100, |
| 84 | + height: 100, |
| 85 | + close: vi.fn() |
| 86 | +})) |
| 87 | + |
| 88 | +// Mock OffscreenCanvas |
| 89 | +global.OffscreenCanvas = class MockOffscreenCanvas { |
| 90 | + width: number |
| 91 | + height: number |
| 92 | + |
| 93 | + constructor(width: number, height: number) { |
| 94 | + this.width = width |
| 95 | + this.height = height |
| 96 | + } |
| 97 | + |
| 98 | + getContext() { |
| 99 | + return { |
| 100 | + fillRect: vi.fn(), |
| 101 | + clearRect: vi.fn(), |
| 102 | + drawImage: vi.fn(), |
| 103 | + getImageData: vi.fn(() => ({ data: new Array(4) })), |
| 104 | + putImageData: vi.fn() |
| 105 | + } |
| 106 | + } |
| 107 | + |
| 108 | + convertToBlob() { |
| 109 | + return Promise.resolve(new Blob([''], { type: 'image/png' })) |
| 110 | + } |
| 111 | +} as any |
0 commit comments