javascript - Angular JS 中的单元测试 promise

Question

我正在尝试对以下功能进行单元测试:

   Service.test = function(id) {
	   return this.getDetails(id).then(function (details){

	         return "name";	   
	   });
   };
   

到目前为止，我已经自己尝试过并做了以下事情:

describe(
   'TempServ',
   	function() {
	var TempSer, $httpBackend, $q, CapabilityService;

 	beforeEach(inject(function(_TempServ_, _$httpBackend_, _$q_,
					_CapabilityService_) {
		TempServ = _TempServ_;
		$q = _$q_;
		$httpBackend = _$httpBackend_;
		CapabilityService = _CapabilityService_;
			}));

	it(" should be in Pending state",function() {
		spyOn(TemplateService, 'getDetails').and.callThrough();
		console.log(TemplateService.test());
						
	});

  		});

我想要一些东西，它可以模拟 getDetails，我可以返回我想要的东西，而不是真正会返回的东西，并测试函数完全独立工作。只有 getDetails 被 mock !

Answer 1

尝试做这样的事情

spyOn(TemplateService, 'getDetails').and.returnValue($q.when('mockDetails'));
$rootScope.$digest();

这将允许您进行如下测试:

it('should be in pending state', function(done) {
  spyOn(TemplateService, 'getDetails').and.returnValue($q.when('mockDetails'));


  TemplateService.test().then(function(result) {
    expect(result).toBe('name'); // this could also be a value computed with "mockDetails"
    done();
  });

  $rootScope.$digest();
});