'use strict'; var assert = require('assert'); var sharp = require('../../index'); var fixtures = require('../fixtures'); describe('Colour space conversion', function() { it('To greyscale', function(done) { sharp(fixtures.inputJpg) .resize(320, 240) .greyscale() .toFile(fixtures.path('output.greyscale-gamma-0.0.jpg'), done); }); it('To greyscale with gamma correction', function(done) { sharp(fixtures.inputJpg) .resize(320, 240) .gamma() .greyscale() .toFile(fixtures.path('output.greyscale-gamma-2.2.jpg'), done); }); it('Not to greyscale', function(done) { sharp(fixtures.inputJpg) .resize(320, 240) .greyscale(false) .toFile(fixtures.path('output.greyscale-not.jpg'), done); }); it('Greyscale with single channel output', function(done) { sharp(fixtures.inputJpg) .resize(320, 240) .greyscale() .toColourspace('b-w') .toBuffer(function(err, data, info) { if (err) throw err; assert.strictEqual(1, info.channels); assert.strictEqual(320, info.width); assert.strictEqual(240, info.height); fixtures.assertSimilar(fixtures.expected('output.greyscale-single.jpg'), data, done); }); }); if (sharp.format.tiff.input.file && sharp.format.webp.output.buffer) { it('From 1-bit TIFF to sRGB WebP [slow]', function(done) { sharp(fixtures.inputTiff) .webp() .toBuffer(function(err, data, info) { if (err) throw err; assert.strictEqual(true, data.length > 0); assert.strictEqual('webp', info.format); done(); }); }); } it('From CMYK to sRGB', function(done) { sharp(fixtures.inputJpgWithCmykProfile) .resize(320) .toBuffer(function(err, data, info) { if (err) throw err; assert.strictEqual(true, data.length > 0); assert.strictEqual('jpeg', info.format); assert.strictEqual(320, info.width); done(); }); }); it('From CMYK to sRGB with white background, not yellow', function(done) { sharp(fixtures.inputJpgWithCmykProfile) .resize(320, 240) .background('white') .embed() .toBuffer(function(err, data, info) { if (err) throw err; assert.strictEqual('jpeg', info.format); assert.strictEqual(320, info.width); assert.strictEqual(240, info.height); fixtures.assertSimilar(fixtures.expected('colourspace.cmyk.jpg'), data, done); }); }); it('From profile-less CMYK to sRGB', function(done) { sharp(fixtures.inputJpgWithCmykNoProfile) .resize(320) .toBuffer(function(err, data, info) { if (err) throw err; assert.strictEqual('jpeg', info.format); assert.strictEqual(320, info.width); fixtures.assertSimilar(fixtures.expected('colourspace.cmyk-without-profile.jpg'), data, done); }); }); it('Invalid input', function() { assert.throws(function() { sharp(fixtures.inputJpg) .toColourspace(null); }); }); });