Jasmine test event listener function for nodeList from given selector

I have following code which listens for keydown event in given array of nodeList.

var obj = {
 method: function(nodeSelector) {
    var nodeContainers = document.querySelectorAll(nodeSelector);
    var keyListenerFunc = this.keyListener.bind(this);

    this.bindListener(nodeContainers, keyListenerFunc);
  },
  isListNode: function (evt){
    return evt.target.nodeName.toLowerCase() === 'li';
  },
  isContainer: function(evt){
    return evt.target.parentNode.classList.contains(this.indicatorClass);
  },
  keyListener: function(evt) {
    if (evt.keyCode === 32 && (this.isContainer(evt) && this.isListNode(evt))) {
      evt.preventDefault();
      evt.target.click();
    }
  },
  bindListener: function(targets, callbackFunc) {
    [].forEach.call(targets, function(item) {
      item.addEventListener('keydown', callbackFunc);
    });
  },
  indicatorClass: 'indicator'
};

I'm using it like: obj.method('.someClassNames'); But now I want to test it completely including the triggering of keydown event. How can I attach event listener and then trigger keydown event on given dom nodes so that my Jasmine tests would work ? How can I create some dummy html code here and then trigger event on it ? I am expecting to write tests of this type => it('It should put event listeners on each carousel passed to the service', function(){}); it('It should call event.preventDefault', function(){}); it('It should call event.target.click', function(){});

I am very much new to testing with Jasmine and I couldn't find any examples that would help me test this scenario. I hope my example makes it clear.