fix(cookieReader): safely access $document so it can be mocked

Closes #11373
Closes #11388

Author: shahata

src/ng/cookieReader.js

@@ -10,7 +10,7 @@
  * @return {Object} a key/value map of the current cookies
  */
 function $$CookieReader($document) {
-  var rawDocument = $document[0];
+  var rawDocument = $document[0] || {};
   var lastCookies = {};
   var lastCookieString = '';
 
@@ -24,9 +24,10 @@ function $$CookieReader($document) {
 
   return function() {
     var cookieArray, cookie, i, index, name;
+    var currentCookieString = rawDocument.cookie || '';
 
-    if (rawDocument.cookie !== lastCookieString) {
-      lastCookieString = rawDocument.cookie;
+    if (currentCookieString !== lastCookieString) {
+      lastCookieString = currentCookieString;
       cookieArray = lastCookieString.split('; ');
       lastCookies = {};
 

test/ng/documentSpec.js

@@ -6,4 +6,24 @@ describe('$document', function() {
   it("should inject $document", inject(function($document) {
     expect($document).toEqual(jqLite(document));
   }));
+
+
+  it('should be able to mock $document object', function() {
+    module({$document: {}});
+    inject(function($httpBackend, $http) {
+      $httpBackend.expectGET('/dummy').respond('dummy');
+      $http.get('/dummy');
+      $httpBackend.flush();
+    });
+  });
+
+
+  it('should be able to mock $document array', function() {
+    module({$document: [{}]});
+    inject(function($httpBackend, $http) {
+      $httpBackend.expectGET('/dummy').respond('dummy');
+      $http.get('/dummy');
+      $httpBackend.flush();
+    });
+  });
 });