CODEWITHSUNDEEP
javascriptangularjsunit-testingjasmine
AngularM
AngularM

Reputation: 16618

How do I do a jasmine unit test for my angular directive that needs to test its emit?

How do I do a jasmine unit test for my angular directive that needs to test its emit?

This directive is a attribute directive and has an emit inside the directive that I need to test.

hows best to do this?

This is my current test:

   //broadcast test:
     describe('broadcast called', function() {

           var rootScope, testService;

           beforeEach(inject(function(_$rootScope_, $injector) {              
                rootScope = _$rootScope_;

                testService = $injector.get('testFactory');

                spyOn(rootScope, "broadcast");
           })); 

           it('should be broadcast', function() {
              testService.emitTest();
              expect(rootScope.broadcast).toHaveBeenCalledWith('test1');
           });
    });

Current code:

appservicemod.factory('testFactory', ['$rootScope', function ($rootScope) {

        var emitTest = function(){  

                    $rootScope.$broadcast('test1');

        }   

        return {
            emitTest: emitTest
        } 
    }
]);

Upvotes: 0

Views: 76

Answers (2)

Michał Miszczyszyn
Michał Miszczyszyn

Reputation: 12701

It seems your current approach works fine, except for a few issues:

  • it should be $broadcast, not broadcast everywhere
  • there's no beforeEach(module('app')) in your code

If you fix these issues, it works: http://jsfiddle.net/MMiszy/c4fz58sp/1/

describe('broadcast called', function() {
   var $rootScope, testService;

   beforeEach(module('app'));

   beforeEach(inject(function(_$rootScope_, $injector) {              
        $rootScope = _$rootScope_;
        spyOn($rootScope, "$broadcast");
        testService = $injector.get('testFactory');
   })); 

   it('should broadcast', function() {
      testService.emitTest();
      expect($rootScope.$broadcast).toHaveBeenCalledWith('test1');
   });
});

Upvotes: 1

Austin
Austin

Reputation: 1291

spy

spyOn(scope, 'emit');

and in the test verify it was called

expect(scope.emit).toHaveBeenCalledWith('valueItShouldBeCalledWith');

Upvotes: 1

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