Tests pass!

.gitignore

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+# Created by https://www.gitignore.io/api/node,osx,windows,linux
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### 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

data/one.txt

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+This is a great thing to talk about because I have nothing else to say

data/three.txt

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+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

data/two.txt

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+lah dee friggen dah, har dee harr harr. Boop da woop

index.js

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

lib/file-reader.js

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+'use-strict';
+
+const fs = require('fs');
+
+module.exports = exports = {};
+
+exports.readSingleFile = function(file, callback) {
+  fs.readFile(file, function(err, data) {
+    if(err) return callback(err);
+    var buffer = new Buffer(data);
+    var hexData = buffer.toString('hex', 0, 8);
+
+    return callback(null, hexData);
+  });
+};
+
+var paths = [
+  `${__dirname}/../data/one.txt`,
+  `${__dirname}/../data/two.txt`,
+  `${__dirname}/../data/three.txt`
+];
+
+exports.readAllFiles = function(pathArray, callback) {
+  var results = [];
+  fs.readFile(pathArray[0], function(err, data){
+    if(err) return callback(err);
+    results.push(data.toString('hex', 0, 8));
+
+    fs.readFile(pathArray[1], function(err, data){
+      if(err) return callback(err);
+      results.push(data.toString('hex', 0, 8));
+
+      fs.readFile(pathArray[2], function(err, data){
+        if(err) return callback(err);
+        results.push(data.toString('hex', 0, 8));
+        callback(null, results);
+      });
+    });
+  });
+};
+
+// exports.readAllFiles(paths, function(err, data){
+//   console.log('data', data);
+// });

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/npisciotti1/03-parallel_file_processing.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/npisciotti1/03-parallel_file_processing/issues"
+  },
+  "homepage": "https://github.com/npisciotti1/03-parallel_file_processing#readme",
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "mocha": "^3.2.0",
+    "mocha-test": "^2.0.3"
+  }
+}

test/file-reader-test.js

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+'use-strict';
+
+const expect = require('chai').expect;
+const fileReader = require('../lib/file-reader.js');
+
+
+
+
+
+describe('File Reader', function() {
+  describe('Hex values should display in order.', function() {
+    before((done) => {
+      this.paths = [
+        `${__dirname}/../data/one.txt`,
+        `${__dirname}/../data/two.txt`,
+        `${__dirname}/../data/three.txt`
+      ];
+      done();
+    });
+    it('should test pathArray and correctly log each result', (done) => {
+      var expectedResults = ['5468697320697320', '6c61682064656520', '4c6f72656d206970'];
+      fileReader.readAllFiles(this.paths, function(err, data) {
+        expect(err).to.equal(null);
+        expect(data[0]).to.equal(expectedResults[0]);
+        expect(data[1]).to.equal(expectedResults[1]);
+        expect(data[2]).to.equal(expectedResults[2]);
+        console.log('data', data);
+        done();
+      });
+    });
+  });
+  describe('An incorrect file-path should fail', function() {
+    it('should throw an error', function(done) {
+      fileReader.readSingleFile(`${__dirname}/../data/bullshit.txt`, function(err, data) {
+        expect(err).to.be.an('error');
+        done();
+      });
+    });
+  });
+});