2 files changed, 15 insertions, 5 deletions
diff --git a/src/scenario/Application.js b/src/scenario/Application.js
index eacf3c7b..9d05aad0 100644
--- a/src/scenario/Application.js
+++ b/src/scenario/Application.js
@@ -41,7 +41,7 @@ angular.scenario.Application.prototype.getWindow_ = function() {
  * Checks that a URL would return a 2xx success status code. Callback is called
  * with no arguments on success, or with an error on failure.
  *
- * Warning: This requires the server to be able to respond to HEAD requests 
+ * Warning: This requires the server to be able to respond to HEAD requests
  * and not modify the state of your application.
  *
  * @param {string} url Url to check
@@ -69,7 +69,7 @@ angular.scenario.Application.prototype.checkUrlStatus_ = function(url, callback)
 /**
  * Changes the location of the frame.
  *
- * @param {string} url The URL. If it begins with a # then only the 
+ * @param {string} url The URL. If it begins with a # then only the
  *   hash of the page is changed.
  * @param {Function} loadFn function($window, $document) Called when frame loads.
  * @param {Function} errorFn function(error) Called if any error when loading.
@@ -79,8 +79,8 @@ angular.scenario.Application.prototype.navigateTo = function(url, loadFn, errorF
   var frame = this.getFrame_();
   //TODO(esprehn): Refactor to use rethrow()
   errorFn = errorFn || function(e) { throw e; };
-  if (/^file:\/\//.test(url)) {
-    errorFn('Sandbox Error: Cannot load file:// URL.');
+  if (url === 'about:blank') {
+    errorFn('Sandbox Error: Navigating to about:blank is not allowed.');
   } else if (url.charAt(0) === '#') {
     url = frame.attr('src').split('#')[0] + url;
     frame.attr('src', url);
diff --git a/src/scenario/Scenario.js b/src/scenario/Scenario.js
index d141c42b..fc7150bc 100644
--- a/src/scenario/Scenario.js
+++ b/src/scenario/Scenario.js
@@ -93,6 +93,7 @@ angular.scenario.matcher = angular.scenario.matcher || function(name, fn) {
  * @param {Object} config Config options
  */
 function angularScenarioInit($scenario, config) {
+  var href = window.location.href;
   var body = _jQuery(document.body);
   var output = [];
 
@@ -108,6 +109,15 @@ function angularScenarioInit($scenario, config) {
     }
   });
 
+  if (!/^http/.test(href) && !/^https/.test(href)) {
+    body.append('<p id="system-error"></p>');
+    body.find('#system-error').text(
+      'Scenario runner must be run using http or https. The protocol ' +
+      href.split(':')[0] + ':// is not supported.'
+    );
+    return;
+  }
+
   var appFrame = body.append('<div id="application"></div>').find('#application');
   var application = new angular.scenario.Application(appFrame);
 
@@ -134,7 +144,7 @@ function angularScenarioInit($scenario, config) {
  *
  * @param {Array} list list to iterate over
  * @param {Function} iterator Callback function(value, continueFunction)
- * @param {Function} done Callback function(error, result) called when 
+ * @param {Function} done Callback function(error, result) called when
  *   iteration finishes or an error occurs.
  */
 function asyncForEach(list, iterator, done) {