80 lines
3.7 KiB
JavaScript
80 lines
3.7 KiB
JavaScript
'use strict';
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// load node standard libraries for filesystem, path and utils
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const fs = require('fs');
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const path = require('path');
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const util = require('util');
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// install node package from https://github.com/reg-viz/img-diff-js
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const { imgDiff } = require("img-diff-js");
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// create log file for our log function, the falg 'w' helps us to overwrite the log every time we run the script (Use 'a' if you want to keep the log file)
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let logFile = fs.createWriteStream('log.txt', { flags: 'w' });
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// create log function to log infos, without spamming the console output
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function log(message) {
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logFile.write(util.format.apply(null, arguments) + '\n');
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}
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// get the current directory and create path for the
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const scriptDir = __dirname;
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const newFolder = `${path.join(scriptDir, '/new')}`;
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const orgFolder = `${path.join(scriptDir, '/org/')}`;
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const diffFolder = `${path.join(scriptDir, '/diff/')}`;
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// create some temporary variables for statistics at the end
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let numberOfImages = 0;
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let numberOfDifferentFiles = 0;
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let numberOfSameFiles = 0;
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let numberOfUnknownFiles = 0;
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// async function to work with the await statement for image diff
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async function main() {
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// let the user know the tests are running (going via the process stdout helps us writing the start notification and the end notification in the same line)
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process.stdout.write('\nStart Tests...');
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// read all files from the new folder
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let files = fs.readdirSync(newFolder);
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// check every file from the new folder
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for(let index = 0; index < files.length; index++) {
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// temporary variable for file
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let file = files[index];
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// create strings with the full path for the files to compare
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let fileFromNewToCheck = `${path.join(newFolder, file)}`;
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let fileFromOrgToCheck = `${path.join(orgFolder, file)}`;
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// create string with the full path for the file containing the differences between the two files
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let fileForDif = `${path.join(diffFolder, file)}`;
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// check if the file exist in the old folder
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if (fs.existsSync(fileFromOrgToCheck)) {
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// if the file exists in the old folder, check if the files are the same
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const result = await imgDiff({
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actualFilename: fileFromNewToCheck,
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expectedFilename: fileFromOrgToCheck,
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diffFilename: fileForDif,
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generateOnlyDiffFile: true,
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});
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// check if the result is the same image
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if(result.imagesAreSame) {
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// if yes, increment the numer of same images
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numberOfSameFiles++;
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} else {
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// if not, increment the numer of different images
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numberOfDifferentFiles++;
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}
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// log the name for the same existing image
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log('Tested: ' + fileFromOrgToCheck);
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// log the result for debugging
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log(JSON.stringify(result));
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} else {
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// log the unknowm file
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log('Unknown: ' + fileFromOrgToCheck);
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// increment the number of unknowm files
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numberOfUnknownFiles++;
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}
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// increment the number of images
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numberOfImages++;
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}
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// let the user know the tests are finished (going via the process stdout helps us writing the start notification and the end notification in the same line)
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process.stdout.write('finished\n\n');
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// printing some statistics
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console.log('Number of images: ' + numberOfImages);
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console.log('Number of diff images: ' + numberOfDifferentFiles);
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console.log('Number of same images: ' + numberOfSameFiles);
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console.log('Number of unknowm images: ' + numberOfUnknownFiles);
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// only for cosmetic
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process.stdout.write('\n');
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}
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// run the async function
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main(); |