Jeff

lab-jeff/.eslintignore

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+**/node_modules/*
+**/vendor/*
+**/*.min.js
+**/coverage/*
+**/build/*

lab-jeff/.eslintrc

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+{
+  "env": {
+    "browser": true,
+    "node": true,
+    "commonjs": true,
+    "jest": true,
+    "es6": true
+  },
+  "globals": {
+    "err": true,
+    "req": true,
+    "res": true,
+    "next": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "comma-dangle": ["error", "always-multiline"],
+    "semi": [ "error", "always" ]
+  }
+}

lab-jeff/.gitignore

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+# Created by https://www.gitignore.io/api/osx,vim,node,linux,windows,visualstudiocode
+
+### 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
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+# auto-generated tag files
+tags
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history
+
+### 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/osx,vim,node,linux,windows,visualstudiocode

lab-jeff/README.md

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+# Code 401 lab 3
+
+## Purpose
+The purpose of this lab is to learn asynchronous function calls using Test Driven Development (TDD) when writing code.  We are using jest.js to test our code.
+
+## File Structure
+There is one test file in the __test__ folder which test the functions included in the reader module in the lib folder.  There are also three text files in the assets folder.
+
+## reader module
+The reader module contains one function, reader.readText.  
+
+### reader.readText
+reader.readText expects 2 arguments: an array of three filepaths to text files and a callback function. If three valid filepaths are passed in an array, it returns an array of strings of the contents of the three text files.  If the filepaths are not valid, it returns an error object.

lab-jeff/__test__/reader.test.js

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+'use strict';
+
+const reader = require('../lib/reader');
+
+const paths = [`${__dirname}/../assets/huskies.txt`, `${__dirname}/../assets/lions.txt`, `${__dirname}/../assets/sounders.txt`];
+
+const invalidPaths = [`${__dirname}/../huskies.txt`, `${__dirname}/../lions.txt`, `${__dirname}/../sounders.txt`];
+
+describe('reader.js', () => {
+  describe('reader.readText', () => {
+    test('function should return contents of three files in order they are listed in the array passed in if there are no errors', (done) => {
+      reader.readText(paths, (error, data) => {
+        expect(error).toBeNull();
+        expect(data).toEqual([`The Michigan Tech Huskies are my favorite college team.\n`, `The Detroit Lions are my favorite NFL team.\n`, `The Seattle Sounders are my favorite soccer team.\n`]);
+        done();
+      });
+    });
+    test('function should reject errors in the file paths', () => {
+      reader.readText(invalidPaths, (error) => {
+        expect(error).not.toBeNull();
+      });
+    });
+
+  });
+});

lab-jeff/assets/huskies.txt

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+The Michigan Tech Huskies are my favorite college team.

lab-jeff/assets/lions.txt

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+The Detroit Lions are my favorite NFL team.

lab-jeff/assets/sounders.txt

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+The Seattle Sounders are my favorite soccer team.

lab-jeff/lib/reader.js

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+'use strict';
+
+const reader = module.exports = {};
+const fs = require('fs');
+
+const dataArray = [];
+
+reader.readText = (paths, callback) => {
+  fs.readFile(paths[0], (error, data) => {
+    if(error) callback(error);
+    dataArray.push(data.toString());
+    fs.readFile(paths[1], (error, data) => {
+      if(error) callback(error);
+      dataArray.push(data.toString());
+      fs.readFile(paths[2], (error, data) => {
+        if(error) callback(error);
+        dataArray.push(data.toString());
+        callback(null, dataArray);
+      });
+    });
+  });
+};