How to assert a spy is invoked with event on click using jasmine?

Question

I\'m writing a simple click handler and need the event passed in (like so)

Thing = function($){

    var MyObject = function(opts){
        this.opts = opts;         


        

Answer 1

If you can't use jQuery you may use dispatchEvent and check its return value (based on this answer).

const domElem = document.getElementById('some_dom_element');
const clickEvent = new MouseEvent('click', {
  view: window,
  bubbles: true,
  cancelable: true
});

const cancelled = !domElem.dispatchEvent(clickEvent);
expect(cancelled).toBeTruthy();