Sample Spec as part of comments "AngularJS - Using Decorators for UnitTesting"

WorldGreeterSpec.js

describe("worldGreeter Tests", function() 
{
    beforeEach( function()
    {
        module( 'test.myApp' );

        /**
         * Configure disposable module with values and factories
         */
        module( function( $provide )
        {
            var Greeter = function() 
                { 
                    return 'Bye'; 
                },
                WorldGreeter = ["greeter", function( greeter )
                {
                    return greeter + " World";
                }];

            $provide.factory( 'greeter',        Greeter );
            $provide.factory( 'worldGreeter',   WorldGreeter );
        });
    });

    it( 'should work with mocked WorldGreeter', function ( worldGreeter ) 
    {
        expect( worldGreeter ).toBe( 'Bye World' );
    });
});

AngularJS - Using Decorators for UnitTesting