refactor app directory structure and add tests

tests/node_modules/nightwatch/lib/api/expect/present.js

@@ -0,0 +1,71 @@
+/**
+ * Property that checks if an element is present in the DOM.
+ *
+ * ```
+ * this.demoTest = function (browser) {
+ *   browser.expect.element('#main').to.be.present;
+ *   browser.expect.element('#main').to.not.be.present;
+ *   browser.expect.element('#main').to.be.present.before(100);
+ * };
+ * ```
+ *
+ * @method present
+ * @display .present
+ * @since v0.7
+ * @api expect
+ */
+var util = require('util');
+var events = require('events');
+var BaseAssertion = require('./_baseAssertion.js');
+
+function PresentAssertion() {
+  this.flag('present', true);
+
+  BaseAssertion.call(this);
+
+  this.message = 'Expected element <%s> to ' + (this.negate ? 'not be present' : 'be present');
+  this.start();
+}
+
+util.inherits(PresentAssertion, BaseAssertion);
+
+PresentAssertion.prototype.executeCommand = function(callback) {
+  return callback(this.elementResult);
+};
+
+PresentAssertion.prototype.elementFound = function() {
+  this.passed = !this.negate;
+
+  if (!this.passed && this.shouldRetry()) {
+    return;
+  }
+
+  if (this.waitForMs) {
+    this.elapsedTime = this.getElapsedTime();
+    this.messageParts.push(' - element was present in ' + this.elapsedTime + 'ms');
+  }
+  if (this.negate) {
+    this.actual = 'present';
+    this.expected = 'not present';
+  }
+};
+
+PresentAssertion.prototype.elementNotFound = function() {
+  this.passed = this.negate;
+
+  if (!this.passed && this.shouldRetry()) {
+    return;
+  }
+
+  if (this.waitForMs && this.negate) {
+    this.messageParts.push(this.checkWaitForMsg(this.elapsedTime) + '.');
+  }
+};
+
+PresentAssertion.prototype.retryCommand = function() {
+  this.promise = this.element.createPromise();
+  this.element.deferred.promise.then(this.onPromiseResolved.bind(this), this.onPromiseRejected.bind(this));
+  this.element.locate();
+};
+
+module.exports = PresentAssertion;