sharp/test/unit/webp.js
2019-01-13 10:11:32 +00:00

79 lines
2.6 KiB
JavaScript

'use strict';
const assert = require('assert');
const sharp = require('../../');
const fixtures = require('../fixtures');
describe('WebP', function () {
it('WebP output', function (done) {
sharp(fixtures.inputJpg)
.resize(320, 240)
.toFormat(sharp.format.webp)
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('webp', info.format);
assert.strictEqual(320, info.width);
assert.strictEqual(240, info.height);
done();
});
});
it('Invalid WebP quality throws error', function () {
assert.throws(function () {
sharp().webp({ quality: 101 });
});
});
it('Invalid WebP alpha quality throws error', function () {
assert.throws(function () {
sharp().webp({ alphaQuality: 101 });
});
});
it('should work for webp alpha quality', function (done) {
sharp(fixtures.inputPngAlphaPremultiplicationSmall)
.webp({ alphaQuality: 80 })
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('webp', info.format);
fixtures.assertSimilar(fixtures.expected('webp-alpha-80.webp'), data, done);
});
});
it('should work for webp lossless', function (done) {
sharp(fixtures.inputPngAlphaPremultiplicationSmall)
.webp({ lossless: true })
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('webp', info.format);
fixtures.assertSimilar(fixtures.expected('webp-lossless.webp'), data, done);
});
});
it('should work for webp near-lossless', function (done) {
sharp(fixtures.inputPngAlphaPremultiplicationSmall)
.webp({ nearLossless: true, quality: 50 })
.toBuffer(function (err50, data50, info50) {
if (err50) throw err50;
assert.strictEqual(true, data50.length > 0);
assert.strictEqual('webp', info50.format);
fixtures.assertSimilar(fixtures.expected('webp-near-lossless-50.webp'), data50, done);
});
});
it('should use near-lossless when both lossless and nearLossless are specified', function (done) {
sharp(fixtures.inputPngAlphaPremultiplicationSmall)
.webp({ nearLossless: true, quality: 50, lossless: true })
.toBuffer(function (err50, data50, info50) {
if (err50) throw err50;
assert.strictEqual(true, data50.length > 0);
assert.strictEqual('webp', info50.format);
fixtures.assertSimilar(fixtures.expected('webp-near-lossless-50.webp'), data50, done);
});
});
});