Testing angular factory

I'm trying hard to bring up the unit test level of an Angular project but struggling to test an AngularJS factory that has dependencies.

My factory has 5 dependencies but I can't even get a test working that just tests that the factory is defined. Here is some sample code of what I'm doing. I have tried using inject, $provide ect but I keep getting an error along the lines of

"Configuration parameter should be an object, instead it is a: undefined"

Here's the test, so far, I've left commented out code in to show what I've been trying:

(function() {

'use strict';

 describe('While working with the channelService', function(){

var sut,
    q,
    filter,
    common,
    dataContext,
    etCommon;

beforeEach(function(){

  // Load the module
  //  module('app');
   module('app');
   module('app.inventory');
   module('blocks.router');

  inject(function($injector){
    sut = $injector.get('channelService');
    q = $injector.get('$q');
    filter = $injector.get('$filter');
    common = $injector.get('common');
    dataContext = $injector.get('dataContext');
    etCommon = $injector.get('etCommons');

    spyOn(q, 'defer');
    spyOn(filter  , 'defer');
    spyOn(common, 'makeStruct');
    spyOn(q, 'defer');
    spyOn(q, 'defer');
  });

  // inject(function($injector){
  //     sut = $injector.get('channelService');
  //
  //     var test = 'some text';
  // })

  // inject(function(_channelService_, _$q_, _$filter_, _common_, _dataContext_, _etCommon_){
  //   sut = _channelService_;
  //   q = _$q_;
  //   filter = _$filter_;
  //   common = _common_;
  //   dataContext = _dataContext_;
  //   etCommon = _etCommon_;
  // });

  // spyOn(q, 'defer');
});

// beforeEach(function(){
//
//   q = {
//     defer: function(){ return deferred.promise;},
//     when: function(){},
//     then: function(){}
//   };
//   filter = {};
//   common = {};
//   dataContext = {};
//   etCommon = {};
//
//   module(function($provide){
//     $provide.value('$q', q);
//     $provide.value('$filter', filter);
//     $provide.value('common', common);
//     $provide.value('dataContext', dataContext);
//     $provide.value('etCommon', etCommon);
//   })
//
//   spyOn(q, 'defer');
// });

describe('should define the following publicly', function(){
  it('should be defined itself', function(){
      expect(sut).toBeDefined();
  });
});

});

})();