错误：喷油器已创建，无法注册模块！ 角1.2茉莉1.3.0

Question

i'm writing a small application in angular and jasmine 1.3 for my test.

First test is working fine, but i have a situation with the second one.

here is a snippet of code with witch i'm struggling:

describe('helperFactoryTest', function() {

    var helperFactory = null,
        items = [
            {id : 1, item : 'Apples', qty : 2, type : 2, done : 1 },
            {id : 2, item : 'Bread', qty : 1, type : 1,  done : 1 },
            {id : 3, item : 'Bananas', qty : 5, type : 2,  done : 0 },
            {id : 4, item : 'Pears', qty : 8, type : 2,  done : 0 }
        ],

        thisItems = [];

    beforeEach(function() {

        module('myApp');

        inject(function(_helperFactory_) {

            helperFactory = _helperFactory_;

        });
    });


    it('should filter array and return records that are completed (done)',
        function() {

            thisItems = helperFactory.filterFieldArrayByDone(items, 'id', 1);

            expect(thisItems.length).toEqual(2);

        }
    );


describe('ShoppingLIstController helper methods test', function() {

    var $scope,
        helperFactory,
        ShoppingListController;


    beforeEach(function() {

        module('myApp');

        inject(function($rootScope, _helperFactory_, $controller) {

           $scope = $rootScope.$new();

           helperFactory = _helperFactory_;

           ShoppingListController = $controller('ShoppingListController', {

               $scope : $scope,
               helperFactory : helperFactory

           });

        });

    });


    it('should return 0 for 2 characters', function() {

        $scope.item = '12';

        expect($scope.howManyMoreCharactersNeeded()).toEqual(0);

    });


});



});

Here is the function that i'm calling in my test:

$scope.howManyMoreCharactersNeeded = function() {

                var characters = (MIN_LENGTH - $scope.item.length);

                return (characters > 0) ? characters : 0;

            };

MIN_LENGTH is equal to 2;

$scope.item.length is the length of characters in textfield;

Can you please tell me what i'm doing wrong.

Answer 1

From my understanding and after coming across exactly similar problem, what i have understood is that , The "modules" that need to be mocked into tests are supposed to be placed at the top, before any other "inject()", that is used to handle special dependencies.

So, considering your case , you have a nested suite (describe('ShoppingLIstController helper methods test') ) , where, you are trying to mock the module again.

I presume, that you might have forgot to close the first suite ( ie, 'helperFactoryTest' ) , which evidently made your next suite as the nested one. So, clearly analysing your suite's opening and closing brackets and terminating your 1st suite solve the error you have come across.

If that is not the case, and if you are into the nested suite , then, note the comments from the below code , which points out the cause of the problem.

 describe('helperFactoryTest', function() {                 // Parent suite
   var helperFactory = null,
       items = [
            {id : 1, item : 'Apples', qty : 2, type : 2, done : 1 },
                   .
                   .
            {id : 4, item : 'Pears', qty : 8, type : 2,  done : 0 }
    ],
    thisItems = [];
    beforeEach(function() {
        module('myApp');                      //  First Module Mock

        inject(function(_helperFactory_) {    // First inject()
            helperFactory = _helperFactory_;
        });
    });
    it('should filter array and return records that are completed (done)',
        function() {
            //Some test       
        }
    );
    describe('ShoppingLIstController helper methods test', function() {  // Nested Suite
    var $scope,
        helperFactory,
        ShoppingListController;
    beforeEach(function() {

                                  /*   Trying to mock the Module again  */
                                  /*    after parent suite's inject() 
            module('myApp');      /*    This is what is triggering error  */
                                  /* REMOVE THIS MODULE MOCK FROM THIS SUITE */ 

        inject(function($rootScope, _helperFactory_, $controller) {

           $scope = $rootScope.$new();
           helperFactory = _helperFactory_;
           ShoppingListController = $controller('ShoppingListController', {
               $scope : $scope,
               helperFactory : helperFactory
           });
        });
    });
    it('should return 0 for 2 characters', function() {
        //Some Test
    });
  });
}); 

Hope this helps

Cheers.