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Drop support for versions of Node prior to v4.

Browse Source 
Reduce production (sub)depedency count from 93 to 50.
Modernise dev tooling, e.g. use nyc, replace jshint with semistandard.
Make 'npm test' command consistent across platforms.
This commit is contained in:
Lovell Fuller
2016-10-26 10:07:42 +01:00
parent 3f5e38bb62
commit 36e636dca1
14 changed files with 348 additions and 387 deletions
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40
test/fixtures/index.js vendored
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@@ -1,34 +1,32 @@
'use strict';
var path = require('path');
var assert = require('assert');
var sharp = require('../../index');
var maxColourDistance = require('../../build/Release/sharp')._maxColourDistance;
const path = require('path');
const sharp = require('../../index');
const maxColourDistance = require('../../build/Release/sharp')._maxColourDistance;
// Helpers
var getPath = function(filename) {
const getPath = function (filename) {
return path.join(__dirname, filename);
};
// Generates a 64-bit-as-binary-string image fingerprint
// Based on the dHash gradient method - see http://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html
var fingerprint = function(image, callback) {
const fingerprint = function (image, callback) {
sharp(image)
.greyscale()
.normalise()
.resize(9, 8)
.ignoreAspectRatio()
.raw()
.toBuffer(function(err, data) {
.toBuffer(function (err, data) {
if (err) {
callback(err);
} else {
var fingerprint = '';
for (var col = 0; col < 8; col++) {
var gradient = 0;
for (var row = 0; row < 8; row++) {
var left = data[row * 8 + col];
var right = data[row * 8 + col + 1];
let fingerprint = '';
for (let col = 0; col < 8; col++) {
for (let row = 0; row < 8; row++) {
const left = data[row * 8 + col];
const right = data[row * 8 + col + 1];
fingerprint = fingerprint + (left < right ? '1' : '0');
}
}
@@ -109,14 +107,14 @@ module.exports = {
path: getPath,
// Path for expected output images
expected: function(filename) {
expected: function (filename) {
return getPath(path.join('expected', filename));
},
// Verify similarity of expected vs actual images via fingerprint
// Specify distance threshold using `options={threshold: 42}`, default
// `threshold` is 5;
assertSimilar: function(expectedImage, actualImage, options, callback) {
assertSimilar: function (expectedImage, actualImage, options, callback) {
if (typeof options === 'function') {
callback = options;
options = {};
@@ -138,12 +136,12 @@ module.exports = {
throw new TypeError('`callback` must be a function');
}
fingerprint(expectedImage, function(err, expectedFingerprint) {
fingerprint(expectedImage, function (err, expectedFingerprint) {
if (err) return callback(err);
fingerprint(actualImage, function(err, actualFingerprint) {
fingerprint(actualImage, function (err, actualFingerprint) {
if (err) return callback(err);
var distance = 0;
for (var i = 0; i < 64; i++) {
let distance = 0;
for (let i = 0; i < 64; i++) {
if (expectedFingerprint[i] !== actualFingerprint[i]) {
distance++;
}
@@ -158,7 +156,7 @@ module.exports = {
});
},
assertMaxColourDistance: function(actualImagePath, expectedImagePath, acceptedDistance) {
assertMaxColourDistance: function (actualImagePath, expectedImagePath, acceptedDistance) {
if (typeof actualImagePath !== 'string') {
throw new TypeError('`actualImagePath` must be a string; got ' + actualImagePath);
}
@@ -169,7 +167,7 @@ module.exports = {
// Default threshold
acceptedDistance = 1;
}
var distance = maxColourDistance(actualImagePath, expectedImagePath);
const distance = maxColourDistance(actualImagePath, expectedImagePath);
if (distance > acceptedDistance) {
throw new Error('Expected maximum absolute distance of ' + acceptedDistance + ', actual ' + distance);
}