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index.js
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index.js
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'use strict';
var webshot = require('webshot'),
fs = require('fs-extra'),
_ = require('lodash'),
chalk = require('chalk'),
resemble = require('node-resemble-js'),
Stylize = require('stylize-core');
var StylizeRegression = function() {
this.path = process.cwd();
this.mismatchTolerance = 0.05;
}
StylizeRegression.prototype.get = function(cmdPath, cb) {
var _stylize = new Stylize;
_stylize.path = cmdPath;
_.forEach(_stylize.config().plugins, function(n, key) {
var settings = {};
var plugin = require(cmdPath + '/node_modules/' + key);
if (n) {
settings = n;
}
_stylize.register(key, plugin, settings);
});
_stylize.getPatterns(cmdPath, function(patterns) {
var patternsLength = patterns.length - 1;
_.forEach(patterns, function(pattern, key) {
// Compile patterns
_stylize.compile(pattern.template, _stylize.partials, _stylize.data(pattern.name), function(compiled) {
pattern.compiled = compiled;
// Compile header
_stylize.compile(pattern.header, '', _stylize.data(), function(compiled) {
pattern.header = compiled;
// Compile footer
_stylize.compile(pattern.footer, '', _stylize.data(), function(compiled) {
pattern.footer = compiled;
if (key === patternsLength) {
cb(_stylize.patterns);
}
});
});
});
});
});
}
StylizeRegression.prototype.takeScreenshot = function(patterns) {
var _stylizeRegression = this,
errorCount = 0,
passCount = 0;
fs.open(this.path + '/regression-tests/baseline', 'r', function(err) {
if (err) {
console.log(chalk.cyan('Creating baseline images'));
_.forEach(patterns, function(pattern, key) {
webshot(pattern.compiled, './regression-tests/baseline/' + pattern.name + '.png', {siteType:'html'}, function(err) {
if(err){
console.log(err);
return;
}
});
});
} else {
console.log(chalk.cyan('Diffing images'));
var loopCount = 1;
_.forEach(patterns, function(pattern, key) {
webshot(pattern.compiled, './regression-tests/compare/' + pattern.name + '.png', {siteType:'html'}, function(err) {
if(err){
console.log(err);
return;
}
var baselineImg = fs.readFileSync(_stylizeRegression.path + '/regression-tests/baseline/' + pattern.name + '.png');
var comparisonImg = fs.readFileSync(_stylizeRegression.path + '/regression-tests/compare/' + pattern.name + '.png');
var diff = resemble(comparisonImg).compareTo(baselineImg).ignoreColors().onComplete(function(data){
// console.log(pattern.name, data);
if (parseInt(data.misMatchPercentage) > _stylizeRegression.mismatchTolerance) {
console.log(chalk.red('Diff failed: ' + pattern.name + ' by ' + data.misMatchPercentage + '% misMatchPercentage'));
errorCount++;
fs.open(_stylizeRegression.path + '/regression-tests/diff', 'r', function(err) {
if (err) {
fs.mkdirSync(_stylizeRegression.path + '/regression-tests/diff');
}
data.getDiffImage().pack().pipe(fs.createWriteStream(_stylizeRegression.path + '/regression-tests/diff/' + pattern.name + '--diff.png'));
});
} else {
passCount++;
}
if (patterns.length === loopCount) {
console.log(chalk.cyan('Diff complete, ') + chalk.green(passCount + ' passed ') + chalk.red(errorCount + ' failed'));
}
loopCount++;
});
});
});
}
});
// return screenshot;
}
module.exports = new StylizeRegression;