// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* Bytes for a sample image.
*
* 225x225 blue square
* https://screenshot.googleplex.com/98CQoeyE6ydqNP7
*/
export const IMAGE_BYTES = new Uint8Array([
137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68,
82, 0, 0, 0, 225, 0, 0, 0, 225, 8, 3, 0, 0, 0, 9,
109, 34, 72, 0, 0, 0, 57, 80, 76, 84, 69, 0, 0, 255, 160,
160, 255, 163, 163, 255, 171, 171, 255, 180, 180, 255, 191, 191, 255, 203,
203, 255, 165, 165, 255, 188, 188, 255, 223, 223, 255, 154, 154, 255, 156,
156, 255, 254, 254, 255, 243, 243, 255, 229, 229, 255, 217, 217, 255, 209,
209, 255, 168, 168, 255, 174, 174, 255, 85, 123, 119, 229, 0, 0, 1,
114, 73, 68, 65, 84, 120, 156, 237, 221, 73, 78, 196, 48, 0, 69,
65, 187, 187, 3, 205, 60, 220, 255, 176, 176, 96, 3, 27, 16, 82,
20, 85, 242, 202, 23, 248, 111, 105, 201, 146, 199, 227, 211, 243, 203,
235, 205, 205, 178, 44, 215, 203, 167, 243, 151, 219, 211, 55, 243, 255,
78, 191, 122, 59, 255, 193, 251, 229, 47, 150, 159, 174, 119, 227, 50,
246, 237, 126, 247, 133, 179, 66, 222, 28, 231, 173, 39, 172, 172, 66,
95, 133, 190, 10, 125, 21, 250, 42, 244, 29, 161, 240, 109, 235, 9,
43, 155, 227, 180, 245, 132, 149, 85, 232, 171, 208, 87, 161, 175, 66,
95, 133, 190, 10, 125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161,
175, 66, 95, 133, 190, 10, 125, 21, 250, 42, 244, 205, 207, 179, 111,
21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66, 95, 133, 190,
10, 125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66, 95,
133, 190, 10, 125, 21, 250, 42, 244, 85, 232, 59, 66, 225, 254, 95,
12, 85, 168, 171, 208, 87, 161, 175, 66, 95, 133, 190, 10, 125, 21,
250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66, 95, 133, 190, 10,
125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 239, 8, 133, 183,
91, 79, 88, 217, 17, 254, 153, 169, 80, 87, 161, 175, 66, 95, 133,
190, 10, 125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66,
95, 133, 190, 10, 125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161,
111, 142, 203, 214, 19, 86, 86, 161, 175, 66, 95, 133, 190, 10, 125,
21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66, 95, 133, 190,
10, 125, 21, 250, 42, 244, 85, 232, 171, 208, 87, 161, 175, 66, 223,
28, 215, 173, 39, 172, 108, 142, 101, 235, 9, 43, 171, 208, 87, 161,
175, 66, 95, 133, 190, 10, 125, 21, 250, 42, 244, 29, 161, 112, 239,
55, 224, 135, 113, 119, 63, 247, 236, 225, 245, 3, 164, 253, 7, 35,
44, 106, 186, 180, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96,
130,
]);
/** File for sample image. */
export const IMAGE_FILE =
new File([IMAGE_BYTES], 'valid-image.png', {type: 'image/png'});
/** Generates an image with the given dimensions. */
export function generateTestImageFile(
height: number, width: number, fileType: string): Promise<File> {
const canvas = document.createElement('canvas');
canvas.height = height;
canvas.width = width;
const context = canvas.getContext('2d')!;
const imageData = context.createImageData(width, height);
const data = imageData.data;
for (let i = 0; i < height * width; i++) {
// RGB values between 0 and 255.
data[i * 4 + 0] = Math.random() * 256 | 0; // Red
data[i * 4 + 1] = Math.random() * 256 | 0; // Green
data[i * 4 + 2] = Math.random() * 256 | 0; // Blue
data[i * 4 + 3] = 90; // alpha (transparency)
}
context.putImageData(imageData, 0, 0);
return new Promise((resolve) => {
canvas.toBlob((blob) => {
const file = new File([blob!], 'test-image', {type: fileType});
resolve(file);
}, fileType);
});
}
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