Getting error while using Jasmine with AngularJS

Question

I am using jasmin to test my AngularJs project with following code

controllersSpec.js

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Answer 1

1) You are making a mistake by trying to access your controller as a field on a module. in your test you should be injecting $controller into your test to create your controller. What that means is that you should be writing your tests like the following:

it('should have a mailctrl', inject(function($rootScope, $controller) {
   var controller = $controller('mainctrl', { $scope: $rootScope.$new(), $rootScope: $rootScope, ...  }) // rest of your dependencies
   expect(controller).toBeDefined();
}));

2) See 1

3) angular.mock.module is used to register your module to the injector in your tests. It is the same thing as module. angular.module is used to create, register or retrieve a module for your application.

Regarding your edit:

You are not providing routeParams and any other service that your controller depends on so $injector does not know where to get them from and is throwing this error. $injector has to know what to inject for every parameter that is required by your controller. Your controller depends on

• $rootScope: provided by angular
• $scope: can be created by $rootScope.$new()
• getMailData: This is your service, you have to provide a mock for this
• $routeParams: This is angular built-in structure but there is not a dedicated mock, but since it is a very simple object you can provide a mock for this yourself.
• $angularCacheFactory: this is a third party service and you have to provide a mock for this as well

So in the end you should be creating your controller like this:

it('should have a mailctrl', inject(function($rootScope, $controller) {
   var controller = $controller('mainctrl', { 
         $scope: $rootScope.$new(), 
         '$routeParams': {}, // whatever  it needs to be to be able to test your controller
         $rootScope: $rootScope, 
         'getMailData': getMailDataMOCK // this object is created by you in your test code
         '$angularCacheFactory': $angularCacheFactoryMOCK
       }) 
   expect(controller).toBeDefined();
}));

If you don't provide any of these arguments then it will try to get it from $injector and will throw an exception when not found.