voluptasquisquam/src/image/__tests__/loadPNG.js

Image processing and manipulation in JavaScript

import {Image, load, getImage} from 'test/common';
import * as fs from 'fs';
import 'should';

describe('Load PNG', function () {
    const tests = [
        // ['name', components, alpha, bitDepth]
        ['grey8', 1, 0, 8],
        ['grey16', 1, 0, 16],
        ['greya16', 1, 1, 8],
        ['greya32', 1, 1, 16],
        ['rgb24', 3, 0, 8],
        ['rgb48', 3, 0, 16],
        ['rgba32', 3, 1, 8],
        ['rgba64', 3, 1, 16]
    ];

    tests.forEach(function (test) {
        it(`should load from path ${test[0]}`, function () {
            return load('format/' + test[0] + '.png').then(function (img) {
                img.components.should.equal(test[1]);
                img.alpha.should.equal(test[2]);
                img.bitDepth.should.equal(test[3]);
            });
        });

        it(`should load from buffer ${test[0]}`, function () {
            const data = fs.readFileSync(getImage(`format/${test[0]}.png`));
            return Image.load(data).then(function (img) {
                img.components.should.equal(test[1]);
                img.alpha.should.equal(test[2]);
                img.bitDepth.should.equal(test[3]);
            });
        });
    });
});