'use strict'; const fs = require('fs'); const assert = require('assert'); const sharp = require('../../'); const fixtures = require('../fixtures'); // Test Helpers var threshold = 0.001; function isInAcceptableRange (actual, expected) { return actual >= ((1 - threshold) * expected) && actual <= ((1 + threshold) * expected); } function isInRange (actual, min, max) { return actual >= min && actual <= max; } function isInteger (val) { return Number.isInteger(val); } describe('Image Stats', function () { it('JPEG', function (done) { sharp(fixtures.inputJpg).stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 7.319914765248541)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 615101275)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 83061892917)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 101.44954540768993)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 58.373870588815414)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 462824115)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 47083677255)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 76.33425255128337)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 44.03023262954866)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 2725)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 372986756)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 32151543524)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 61.51724663436759)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 38.96702865090125)); assert.strictEqual(true, isInteger(stats.channels[2]['minX'])); assert.strictEqual(true, isInRange(stats.channels[2]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['minY'])); assert.strictEqual(true, isInRange(stats.channels[2]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxY'], 0, 2725)); done(); }); }); it('PNG without transparency', function (done) { sharp(fixtures.inputPng).stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 0.3409031108021736)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 1391368230)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 354798898650)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 238.8259925648822)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 62.15121915523771)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2809)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2074)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2809)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2074)); done(); }); }); it('PNG with transparency', function (done) { sharp(fixtures.inputPngWithTransparency).stats(function (err, stats) { if (err) throw err; assert.strictEqual(false, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 0.06778064835816622)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 795678795)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 202898092725)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 252.9394769668579)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 22.829537532816)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 1536)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 1536)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 795678795)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 202898092725)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 252.9394769668579)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 22.829537532816)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 1536)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 1536)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 795678795)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 202898092725)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 252.9394769668579)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 22.829537532816)); assert.strictEqual(true, isInteger(stats.channels[2]['minX'])); assert.strictEqual(true, isInRange(stats.channels[2]['minX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[2]['minY'])); assert.strictEqual(true, isInRange(stats.channels[2]['minY'], 0, 1536)); assert.strictEqual(true, isInteger(stats.channels[2]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[2]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxY'], 0, 1536)); // alpha channel assert.strictEqual(0, stats.channels[3]['min']); assert.strictEqual(255, stats.channels[3]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['sum'], 5549142)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['squaresSum'], 1333571132)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['mean'], 1.7640247344970703)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['stdev'], 20.51387814157297)); assert.strictEqual(true, isInteger(stats.channels[3]['minX'])); assert.strictEqual(true, isInRange(stats.channels[3]['minX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[3]['minY'])); assert.strictEqual(true, isInRange(stats.channels[3]['minY'], 0, 1536)); assert.strictEqual(true, isInteger(stats.channels[3]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[3]['maxX'], 0, 2048)); assert.strictEqual(true, isInteger(stats.channels[3]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[3]['maxY'], 0, 1536)); done(); }); }); it('PNG fully transparent', function (done) { sharp(fixtures.inputPngCompleteTransparency).stats(function (err, stats) { if (err) throw err; assert.strictEqual(false, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 0)); // alpha channel assert.strictEqual(0, stats.channels[3]['min']); assert.strictEqual(0, stats.channels[3]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['sum'], 0)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['squaresSum'], 0)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['mean'], 0)); assert.strictEqual(true, isInAcceptableRange(stats.channels[3]['stdev'], 0)); assert.strictEqual(true, isInteger(stats.channels[3]['minX'])); assert.strictEqual(true, isInRange(stats.channels[3]['minX'], 0, 300)); assert.strictEqual(true, isInteger(stats.channels[3]['minY'])); assert.strictEqual(true, isInRange(stats.channels[3]['minY'], 0, 300)); assert.strictEqual(true, isInteger(stats.channels[3]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[3]['maxX'], 0, 300)); assert.strictEqual(true, isInteger(stats.channels[3]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[3]['maxY'], 0, 300)); done(); }); }); it('Tiff', function (done) { sharp(fixtures.inputTiff).stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 0.3851250782608986)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 1887266220)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 481252886100)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 235.81772349417824)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 67.25712856093298)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2464)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 3248)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2464)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 3248)); done(); }); }); it('WebP', function (done) { sharp(fixtures.inputWebP).stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 7.51758075132966)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 83291370)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 11379783198)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 105.36169496842616)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 57.39412151419967)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 772)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 772)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 120877425)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 20774687595)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 152.9072025279307)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 53.84143349689916)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 772)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 772)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 138938859)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 28449125593)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 175.75450711423252)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 71.39929031070358)); assert.strictEqual(true, isInteger(stats.channels[2]['minX'])); assert.strictEqual(true, isInRange(stats.channels[2]['minX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[2]['minY'])); assert.strictEqual(true, isInRange(stats.channels[2]['minY'], 0, 772)); assert.strictEqual(true, isInteger(stats.channels[2]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxX'], 0, 1024)); assert.strictEqual(true, isInteger(stats.channels[2]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxY'], 0, 772)); done(); }); }); it('GIF', function (done) { sharp(fixtures.inputGif).stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 6.087309412541799)); // red channel assert.strictEqual(35, stats.channels[0]['min']); assert.strictEqual(254, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 56088385)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 8002132113)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 131.53936444652908)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 38.26389131415863)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 533)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 533)); // green channel assert.strictEqual(43, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 58612156)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 8548344254)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 137.45815196998123)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 33.955424103758205)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 533)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 533)); // blue channel assert.strictEqual(51, stats.channels[2]['min']); assert.strictEqual(254, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 49628525)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 6450556071)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 116.38959896810506)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 39.7669551046809)); assert.strictEqual(true, isInteger(stats.channels[2]['minX'])); assert.strictEqual(true, isInRange(stats.channels[2]['minX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[2]['minY'])); assert.strictEqual(true, isInRange(stats.channels[2]['minY'], 0, 533)); assert.strictEqual(true, isInteger(stats.channels[2]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxX'], 0, 800)); assert.strictEqual(true, isInteger(stats.channels[2]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxY'], 0, 533)); done(); }); }); it('Grayscale GIF with alpha', function (done) { sharp(fixtures.inputGifGreyPlusAlpha).stats(function (err, stats) { if (err) throw err; assert.strictEqual(false, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 1)); // gray channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(101, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 101)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 10201)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 50.5)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 71.4177848998413)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 1)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 1)); // alpha channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 255)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 65025)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 127.5)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 180.31222920256963)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 2)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 1)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 2)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 1)); done(); }); }); it('CMYK input without profile', () => sharp(fixtures.inputJpgWithCmykNoProfile) .stats() .then(stats => { assert.strictEqual(4, stats.channels.length); assert.strictEqual(true, stats.isOpaque); }) ); it('Stream in, Callback out', function (done) { const readable = fs.createReadStream(fixtures.inputJpg); const pipeline = sharp().stats(function (err, stats) { if (err) throw err; assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 7.319914765248541)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 615101275)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 83061892917)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 101.44954540768993)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 58.373870588815414)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 462824115)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 47083677255)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 76.33425255128337)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 44.03023262954866)); assert.strictEqual(true, isInteger(stats.channels[1]['minX'])); assert.strictEqual(true, isInRange(stats.channels[1]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['minY'])); assert.strictEqual(true, isInRange(stats.channels[1]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[1]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[1]['maxY'], 0, 2725)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 372986756)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 32151543524)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 61.51724663436759)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 38.96702865090125)); assert.strictEqual(true, isInteger(stats.channels[2]['minX'])); assert.strictEqual(true, isInRange(stats.channels[2]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['minY'])); assert.strictEqual(true, isInRange(stats.channels[2]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[2]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[2]['maxY'], 0, 2725)); done(); }); readable.pipe(pipeline); }); it('Stream in, Promise out', function () { const pipeline = sharp(); fs.createReadStream(fixtures.inputJpg).pipe(pipeline); return pipeline.stats().then(function (stats) { assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 7.319914765248541)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 615101275)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 83061892917)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 101.44954540768993)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 58.373870588815414)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 462824115)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 47083677255)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 76.33425255128337)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 44.03023262954866)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 372986756)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 32151543524)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 61.51724663436759)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 38.96702865090125)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); }).catch(function (err) { throw err; }); }); it('File in, Promise out', function () { return sharp(fixtures.inputJpg).stats().then(function (stats) { assert.strictEqual(true, stats.isOpaque); assert.strictEqual(true, isInAcceptableRange(stats.entropy, 7.319914765248541)); // red channel assert.strictEqual(0, stats.channels[0]['min']); assert.strictEqual(255, stats.channels[0]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['sum'], 615101275)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['squaresSum'], 83061892917)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['mean'], 101.44954540768993)); assert.strictEqual(true, isInAcceptableRange(stats.channels[0]['stdev'], 58.373870588815414)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // green channel assert.strictEqual(0, stats.channels[1]['min']); assert.strictEqual(255, stats.channels[1]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['sum'], 462824115)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['squaresSum'], 47083677255)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['mean'], 76.33425255128337)); assert.strictEqual(true, isInAcceptableRange(stats.channels[1]['stdev'], 44.03023262954866)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); // blue channel assert.strictEqual(0, stats.channels[2]['min']); assert.strictEqual(255, stats.channels[2]['max']); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['sum'], 372986756)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['squaresSum'], 32151543524)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['mean'], 61.51724663436759)); assert.strictEqual(true, isInAcceptableRange(stats.channels[2]['stdev'], 38.96702865090125)); assert.strictEqual(true, isInteger(stats.channels[0]['minX'])); assert.strictEqual(true, isInRange(stats.channels[0]['minX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['minY'])); assert.strictEqual(true, isInRange(stats.channels[0]['minY'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxX'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxX'], 0, 2725)); assert.strictEqual(true, isInteger(stats.channels[0]['maxY'])); assert.strictEqual(true, isInRange(stats.channels[0]['maxY'], 0, 2725)); }).catch(function (err) { throw err; }); }); it('File input with corrupt header fails gracefully', function (done) { sharp(fixtures.inputJpgWithCorruptHeader) .stats(function (err) { assert.strictEqual(true, !!err); done(); }); }); it('File input with corrupt header fails gracefully, Promise out', function () { return sharp(fixtures.inputJpgWithCorruptHeader) .stats().then(function (stats) { throw new Error('Corrupt Header file'); }).catch(function (err) { assert.ok(!!err); }); }); it('File input with corrupt header fails gracefully, Stream In, Promise Out', function () { const pipeline = sharp(); fs.createReadStream(fixtures.inputJpgWithCorruptHeader).pipe(pipeline); return pipeline .stats().then(function (stats) { throw new Error('Corrupt Header file'); }).catch(function (err) { assert.ok(!!err); }); }); it('Buffer input with corrupt header fails gracefully', function (done) { sharp(fs.readFileSync(fixtures.inputJpgWithCorruptHeader)) .stats(function (err) { assert.strictEqual(true, !!err); done(); }); }); it('Non-existent file in, Promise out', function (done) { sharp('fail').stats().then(function (stats) { throw new Error('Non-existent file'); }, function (err) { assert.ok(!!err); done(); }); }); });