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test(crypto-js): Properly test `Qr.toQrCode.

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This commit is contained in:
Ivan Enderlin
2022-09-12 09:36:19 +02:00
parent 9834b67bd5
commit 581c537396
2 changed files with 58 additions and 10 deletions
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9
bindings/matrix-sdk-crypto-js/package.json
View File

@@ -26,12 +26,13 @@
"pkg/matrix_sdk_crypto.d.ts"
],
"devDependencies": {
"wasm-pack": "^0.10.2",
"canvas": "^2.10.1",
"cross-env": "^7.0.3",
"fake-indexeddb": "^4.0",
"jest": "^28.1.0",
"typedoc": "^0.22.17",
"cross-env": "^7.0.3",
"yargs-parser": "~21.0.1",
"fake-indexeddb": "^4.0"
"wasm-pack": "^0.10.2",
"yargs-parser": "~21.0.1"
},
"engines": {
"node": ">= 10"

59
bindings/matrix-sdk-crypto-js/tests/device.test.js
View File

@@ -719,13 +719,60 @@ describe('Key Verification', () => {
expect(qrCode).toBeInstanceOf(QrCode);
const buffer = qrCode.renderIntoBuffer();
let canvasBuffer;
expect(buffer).toBeInstanceOf(Uint8ClampedArray);
// 45px ⨉ 45px
expect(buffer).toHaveLength(45 * 45);
// 0 for a white pixel, 1 for a black pixel.
expect(buffer.every(p => p == 0 || p == 1)).toStrictEqual(true);
{
const buffer = qrCode.renderIntoBuffer();
expect(buffer).toBeInstanceOf(Uint8ClampedArray);
// 45px ⨉ 45px
expect(buffer).toHaveLength(45 * 45);
// 0 for a white pixel, 1 for a black pixel.
expect(buffer.every(p => p == 0 || p == 1)).toStrictEqual(true);
const { Canvas } = require('canvas');
const canvas = new Canvas(45, 45);
const context = canvas.getContext('2d');
// New image data, filled with black, transparent pixels.
const imageData = context.createImageData(45, 45);
const data = imageData.data;
for (
let dataNth = 0,
bufferNth = 0;
dataNth < data.length && bufferNth < buffer.length;
dataNth += 4,
bufferNth += 1
) {
// White pixel
if (buffer[bufferNth] == 0) {
data[dataNth] = 255;
data[dataNth + 1] = 255;
data[dataNth + 2] = 255;
data[dataNth + 3] = 255;
}
}
context.putImageData(imageData, 0, 0);
canvasBuffer = canvas.toBuffer('image/png');
}
// Want to see the QR code? Uncomment the following block.
/*
{
const fs = require('fs/promises');
const path = require('path');
const os = require('os');
const tempDirectory = await fs.mkdtemp(path.join(os.tmpdir(), 'matrix-sdk-crypto--'));
const qrCodeFile = path.join(tempDirectory, 'qrcode.png');
console.log(`View the QR code at \`${qrCodeFile}\`.`);
expect(await fs.writeFile(qrCodeFile, canvasBuffer)).toBeUndefined();
}
*/
});
});
});