refactor app directory structure and add tests

tests/node_modules/nightwatch/examples/unittests/testUtilsWithChai.js

@@ -0,0 +1,29 @@
+var Utils = require('../../lib/util/utils.js');
+var expect = require('chai').expect;
+
+module.exports = {
+  testFormatElapsedTime : function(client) {
+    var resultMs = Utils.formatElapsedTime(999);
+    var resultSec = Utils.formatElapsedTime(1999);
+    var resultMin = Utils.formatElapsedTime(122299, true);
+
+    expect(resultMs).to.equal('999ms');
+    expect(resultSec).to.equal('1.999s');
+    expect(resultMin).to.equal('2m 2s / 122299ms');
+  },
+
+  testFormatElapsedTimeMore : function(client) {
+    var resultMs = Utils.formatElapsedTime(999);
+    expect(resultMs).to.equal('999ms');
+  },
+
+  testMakeFnAsync : function(client) {
+    function asynFn(done) {
+      done();
+    }
+
+    function syncFn() {}
+
+    expect(Utils.makeFnAsync(1, asynFn)).to.equal(asynFn);
+  }
+};