fix(pageload): add a wait during protractor.get() to solve unload issues

Some systems would not wait for the browser unload event to finish
before beginning the asynchronous script execution.

Closes #406. Closes #85.

Author: juliemr

lib/protractor.js

@@ -553,6 +553,8 @@ Protractor.prototype.clearMockModules = function() {
  */
 Protractor.prototype.get = function(destination, opt_timeout) {
   var timeout = opt_timeout || 10;
+  var self = this;
+
   destination = url.resolve(this.baseUrl, destination);
 
   if (this.ignoreSynchronization) {
@@ -562,7 +564,15 @@ Protractor.prototype.get = function(destination, opt_timeout) {
   this.driver.get('about:blank');
   this.driver.executeScript(
       'window.name = "' + DEFER_LABEL + '" + window.name;' +
-      'window.location.href = "' + destination + '"');
+      'window.location.assign("' + destination + '");');
+
+  // At this point, we need to make sure the new url has loaded before
+  // we try to execute any asynchronous scripts.
+  this.driver.wait(function() {
+    return self.driver.getCurrentUrl().then(function(url) {
+      return url !== 'about:blank';
+    });
+  }, 300);
 
   var assertAngularOnPage = function(arr) {
     var hasAngular = arr[0];
@@ -574,24 +584,10 @@ Protractor.prototype.get = function(destination, opt_timeout) {
   };
 
   // Make sure the page is an Angular page.
-  var self = this;
+
   self.driver.executeAsyncScript(clientSideScripts.testForAngular, timeout).
     then(assertAngularOnPage, function(err) {
-      if (/reload detected during async script/.test(err.message)) {
-        // Sometimes IE will fail to run scripts right after a location change.
-        // Let's try it once more.
-        self.driver.executeAsyncScript(
-            clientSideScripts.testForAngular, timeout).
-          then(assertAngularOnPage, function(err) {
-            if (/reload detected during async script/.test(err.message)) {
-              throw 'Persistent async reload interrupt problem: ' + err.message;
-            } else {
-              throw 'Error while running testForAngular: ' + err.message;
-            }
-          });
-      } else {
-        throw 'Error while running testForAngular: ' + err.message;
-      }
+      throw 'Error while running testForAngular: ' + err.message;
     });
 
   // At this point, Angular will pause for us, until angular.resumeBootstrap