Adding Karma + Jasmine and some other changes

.eslintrc.json

@@ -8,6 +8,7 @@
         "no-console":0
     },
     "env": {
-        "browser": true
+        "browser": true,
+        "jasmine": true
     }
 }

CONTRIBUTING.md

@@ -139,27 +139,7 @@ Create a new folder called `/experiments` in the project's root folder. Create a
 
 ## Running Unit Tests
 
-This project uses [Jest](https://facebook.github.io/jest/) to run unit tests.
 
-Jest is an open-source framework to run javascript tests.
-
-If you are unfamiliar with running unit tests on Javascript, consider watching [this tutorial](https://egghead.io/lessons/javascript-unit-testing-with-mocha-and-chai).
-
-We recommend having two open tabs in your terminal window: one monitoring your source code (as shown above) and another watching for unit tests. 
-
-To start the test environment, run:
-
-```bash
-npm run test:dev
-```
-
-This will watch for files changes and run tests when necessary.
-
-If you just want to check if all tests are passing:
-
-```bash
-npm run test
-```
 
 ## ML5 Website
 

karma.conf.js

@@ -0,0 +1,61 @@
+// Karma configuration
+// Generated on Thu Mar 29 2018 11:50:44 GMT-0400 (EDT)
+
+module.exports = (config) => {
+  config.set({
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '',
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['jasmine'],
+    // list of files / patterns to load in the browser
+    files: [
+      'src/*/*.test.js',
+      'src/images/*.jpg',
+    ],
+    // list of files / patterns to exclude
+    exclude: [],
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+      // add webpack as preprocessor
+      'src/*/*.test.js': ['webpack'],
+    },
+    webpack: {
+      // karma watches the test entry points
+      // (you don't need to specify the entry option)
+      // webpack watches dependencies
+
+      // webpack configuration
+
+    },
+    webpackMiddleware: {
+      // webpack-dev-middleware configuration
+      // i. e.
+      stats: 'errors-only',
+    },
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress'],
+    // web server port
+    port: 9876,
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: true,
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    // browsers: ['Chrome', 'Firefox', 'Safari'],
+    browsers: ['Chrome'],
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: false,
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity,
+  });
+};