fix($httpBackend): make sure unexpected request fail on verify no out…

…standing request

test/ngMock/angular-mocksSpec.js

@@ -2429,7 +2429,7 @@ describe('ngMock', function() {
 
 describe('ngMockE2E', function() {
   describe('$httpBackend', function() {
-    var hb, realHttpBackend, realHttpBackendBrowser, callback;
+    var hb, realHttpBackend, realHttpBackendBrowser, $http, callback;
 
     beforeEach(function() {
       callback = jasmine.createSpy('callback');
@@ -2442,10 +2442,29 @@ describe('ngMockE2E', function() {
       module('ngMockE2E');
       inject(function($injector) {
         hb = $injector.get('$httpBackend');
+        $http = $injector.get('$http');
       });
     });
 
 
+    it('should throw error when unexpected request - without error callback', function() {
+      expect(function() {
+        $http.get('/some').then(noop);
+
+        hb.verifyNoOutstandingRequest();
+      }).toThrowError();
+    });
+
+
+    it('should throw error when unexpected request - with error callback', function() {
+      expect(function() {
+        $http.get('/some').then(noop, noop);
+
+        hb.verifyNoOutstandingRequest();
+      }).toThrowError();
+    });
+
+
     describe('passThrough()', function() {
       it('should delegate requests to the real backend when passThrough is invoked', function() {
         var eventHandlers = {progress: angular.noop};