测试Angular服务时，如何使用该服务模拟控制器？

Question

I have an Angular service that is used by different controllers. It contains a method that expects any controller instance as argument.

myService.methodAbc( ctrl );

I know how to set up the Jasmine specs for the service but I am at a loss when it comes to setting up a fake controller in my specs so I can test said method. Using one of the app's existing controllers feels wrong as my service's test would break were I to rename/change/delete the controller.

Any input would be appreciated. I have the feeling I am missing something obvious here.

Answer 1

You can pass in a plain-old object to act as a fake controller. Personally, I prefer to use SinonJS to create stubs for methods, because it will allow your test to assert how, say, myService interacts with ctrl . Jasmine has its own fake object methods, which I am not familiar with which you can use as well. Here's how it would look when using SinonJS ( and a library which integrates it with Jasmine ):

var fakeController = {
    someMethod: sinon.stub(), 
    anotherMethod: sinon.stub() 
};
myService.methodAbc(fakeController);

expect(fakeController.someMethod).toHaveBeenCalledWith('foo', 'bar');

Update:

Here's how you can use the native Jasmine library to do the same:

var fakeController = jasmine.createSpyObj(
    'fakeController', 
    ['someMethod', 'anotherMethod']);

myService.methodAbc(fakeController);

expect(fakeController.someMethod).toHaveBeenCalledWith('foo', 'bar');