'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); }); }); });