Resemble.js/nodejs-tests/ignore.test.js

/* eslint-env jest*/

const resemble = require('../resemble');
const fs = require('fs');

describe('ignore', () => {
    test('ignore antialiasing on', async () => {
        const text = fs.readFileSync('./nodejs-tests/assets/text.png');
        const textAa = fs.readFileSync('./nodejs-tests/assets/textAa.png');

        return new Promise(resolve => {
            const opts = { ignore: 'antialiasing' };

            resemble.compare(text, textAa, opts, (_x, data) => {
                expect(data.misMatchPercentage).toBe('0.00');
                const buffer = data.getBuffer();

                expect(buffer).toBeInstanceOf(Buffer);

                const comparison = fs.readFileSync(
                    './nodejs-tests/assets/isAntialiased/diffOn.png'
                );

                expect(buffer.equals(comparison)).toBe(true);
                resolve();
            });
        });
    });

    test('ignore antialiasing off', async () => {
        const text = fs.readFileSync('./nodejs-tests/assets/text.png');
        const textAa = fs.readFileSync('./nodejs-tests/assets/textAa.png');

        return new Promise(resolve => {
            resemble.compare(text, textAa, {}, (_x, data) => {
                expect(data.misMatchPercentage).toBe('5.19');
                const buffer = data.getBuffer();

                expect(buffer).toBeInstanceOf(Buffer);

                const comparison = fs.readFileSync(
                    './nodejs-tests/assets/isAntialiased/diffOff.png'
                );

                expect(buffer.equals(comparison)).toBe(true);
                resolve();
            });
        });
    });
});