QUnit for javascript Testing on events

问题

Im really new to javascript testing. I'm able to test all other functions of qunit. But couldn't figure out how to use qunit to test event handler functionalities. I tried the below after seeing a sample in jquery event.js test suite for trigger, bind & delegate functions.

test('Event Handling', function () {
    var hai = function() {
            console.log('Clicked');
        ok(true, 'click event triggered');
    };
    eventLib.addEvent(document.getElementById('qunit-header'), 'click', hai);
    $('#qunit-header').trigger('click');
    ok(true, 'It happend');
});

Here eventLib is a function that I have written to attach and detach events. But the above code doesn't seem to give any kind of output on qunit html interface [except It happend]. But if I manually click the header, event handler logs to console. I'm using jquery v1.6.2

回答1:

It seems .trigger only runs events bound through jQuery, not through another way. On Chrome, this only logs jquery: http://jsfiddle.net/LYxD4/.

$("#x").get(0)
       .addEventListener("click", console.log.bind(console, "native"),
                         false);

$("#x").on("click", console.log.bind(console, "jquery"));

$("#x").trigger("click");​

You can use .dispatchEvent instead: http://jsfiddle.net/LYxD4/1/.

var event = document.createEvent("HTMLEvents");
event.initEvent("click", true, true);

$(...).get(0).dispatchEvent(event);​

来源：https://stackoverflow.com/questions/9670357/qunit-for-javascript-testing-on-events