fix(ngMock): allow numeric timeouts in $httpBackend mock

Fixes #4891

src/ngMock/angular-mocks.js

@@ -1112,7 +1112,7 @@ angular.mock.dump = function(object) {
    ```
  */
 angular.mock.$HttpBackendProvider = function() {
-  this.$get = ['$rootScope', createHttpBackendMock];
+  this.$get = ['$rootScope', '$timeout', createHttpBackendMock];
 };
 
 /**
@@ -1129,7 +1129,7 @@ angular.mock.$HttpBackendProvider = function() {
  * @param {Object=} $browser Auto-flushing enabled if specified
  * @return {Object} Instance of $httpBackend mock
  */
-function createHttpBackendMock($rootScope, $delegate, $browser) {
+function createHttpBackendMock($rootScope, $timeout, $delegate, $browser) {
   var definitions = [],
       expectations = [],
       responses = [],
@@ -1159,7 +1159,9 @@ function createHttpBackendMock($rootScope, $delegate, $browser) {
     }
 
     function wrapResponse(wrapped) {
-      if (!$browser && timeout && timeout.then) timeout.then(handleTimeout);
+      if (!$browser && timeout) {
+        timeout.then ? timeout.then(handleTimeout) : $timeout(handleTimeout, timeout);
+      }
 
       return handleResponse;
 
@@ -2033,7 +2035,7 @@ angular.module('ngMockE2E', ['ng']).config(['$provide', function($provide) {
  */
 angular.mock.e2e = {};
 angular.mock.e2e.$httpBackendDecorator =
-  ['$rootScope', '$delegate', '$browser', createHttpBackendMock];
+  ['$rootScope', '$timeout', '$delegate', '$browser', createHttpBackendMock];
 
 
 /**

test/ngMock/angular-mocksSpec.js

@@ -1310,6 +1310,18 @@ describe('ngMock', function() {
     });
 
 
+    it('should abort requests when timeout passed as a numeric value', inject(function($timeout) {
+      hb.expect('GET', '/url1').respond(200);
+
+      hb('GET', '/url1', null, callback, null, 200);
+      $timeout.flush(300);
+
+      expect(callback).toHaveBeenCalledWith(-1, undefined, '');
+      hb.verifyNoOutstandingExpectation();
+      hb.verifyNoOutstandingRequest();
+    }));
+
+
     it('should throw an exception if no response defined', function() {
       hb.when('GET', '/test');
       expect(function() {