Testing if conditional was called in my AngularJS unit test

I have set up my unit tests in AngularJS with a Karma test runner and a Jasmine test framework. My code coverage report nicely shows me which lines and conditionals have been covered in my test. It is with this coverage report that I realised an if conditional in my code (see below) is not being tested. Do I need to create a mock for the angular.forEach() call? And if so, how exactly to do this? With ngMock?

To make my question a bit more clear, I would like to provide you with an example using an if conditional in an angular.forEach() call.

Say for example I have the following service:

angular.module('myApp').service('myService', function () {
  function myFunction(myFunctionParameters) {

    // ... Some irrelevant code...

    var x = [];
    angular.forEach(xObjs, function(o) {
      if (some condition) {  // <--- Code coverage says this is not tested!!
        // do something...
      }
    });

    // ... Some more irrelevant code

    return // Something //
  }

  return {
    myFunction: myFunction
  };
});

A test for "myService" could be something like this:

describe("myService", function() {
  // Some variables  
  // Declare the mocking variable
  // Invoke the module
  beforeEach(module('myApp'));   
  beforeEach(function(){
    // Define the mock variable
    mockVariable = <define mock variable here>
    module(function($provide) {
      $provide.value('serviceToMockName', mockVariable);
    });

    // Inject the services
    inject(function(_myService_) {
      myService = _myService_;
    });

    // Spy on the mock
    // Call myFunction function in myService
    result = myService.myFunction(functionParameters);
  });

  // Write some tests for the myFunction call in myService
  describe("myFunction", function() {
   it("should test the if condition...", function() {
     // How to make sure I did the condition check in the if statement!!
   });
  });
});