cayla-lab

.eslintrc

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+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

.gitignore

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+# Created by https://www.gitignore.io/api/node,osx,windows
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+### OSX ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/node,osx,windows

data/one.txt

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+1file number one

data/three.txt

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+2file number three

data/two.txt

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+3file number two

index.js

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+'use strict';
+
+const fs = require('fs');
+const readFiles = require('./lib/file-reader.js')

lib/file-reader.js

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+'use strict';
+
+const fs = require('fs');
+
+const readFileHelper = module.exports = function(pathArray, callback) {
+  var result = [];
+
+  fs.readFile(pathArray[0],function(err, data){
+    if (err) return callback(err);
+    result.push(data.toString('hex', 0, 8));
+    fs.readFile(pathArray[1], function(err, data){
+      if (err) return callback(err);
+      result.push(data.toString('hex', 0, 8));
+      fs.readFile(pathArray[2], function (err, data){
+        if (err) return callback(err);
+        result.push(data.toString('hex', 0,8));
+        console.log('my result:', result);
+        callback(null, result);
+      });
+    });
+  });
+};

package.json

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+{
+  "name": "03-parallel_file_processing",
+  "version": "1.0.0",
+  "description": "![CF](https://camo.githubusercontent.com/70edab54bba80edb7493cad3135e9606781cbb6b/687474703a2f2f692e696d6775722e636f6d2f377635415363382e706e67) Lab 03: Parallel File Processing ===",
+  "main": "index.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/caylazabel/03-parallel_file_processing.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/caylazabel/03-parallel_file_processing/issues"
+  },
+  "homepage": "https://github.com/caylazabel/03-parallel_file_processing#readme",
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "gulp-eslint": "^3.0.1",
+    "gulp-mocha": "^3.0.1",
+    "mocha": "^3.2.0"
+  }
+}

test/file-reader-test.js

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+'use strict';
+
+const expect = require('chai').expect;
+const readFile = require('../lib/file-reader.js');
+
+describe('Read File Helper Module', function(){
+  describe('with bad file paths', function(){
+    it('should return an error', function(){
+      readFile([`${__dirname}/dont-exist.txt`], function(err){
+        expect(!!err).to.equal(true);
+      });
+    });
+  });
+
+describe('with file good file paths', function(){
+  before((done) => {
+    this.paths = [
+      `${__dirname}/../data/one.txt`,
+      `${__dirname}/../data/two.txt`,
+      `${__dirname}/../data/three.txt`
+    ];
+    done();
+  });
+  it('should have correct order of hex strings', (done) => {
+    var expectedResult = ['3166696c65206e75', '3366696c65206e75', '3266696c65206e75'];
+    readFile(this.paths, function(err, data){
+      expect(err).to.equal(null);
+      expect(data[0]).to.equal(expectedResult[0]);
+      expect(data[1]).to.equal(expectedResult[1]);
+      expect(data[2]).to.equal(expectedResult[2]);
+      console.log('data', data);
+      done();
+    });
+  });
+});
+});