Element.focus() in IE9 running Jasmine tests with Karma

I recently udpated our Jasmine unit tests to run in Karma; expanding our browser coverage, adding code coverage reports, and using fixtures for testing DOM manipulation.

One of my tests kept failing in IE9, but only when I ran from the console. If I attempted to debug in the browser, everything passed.

It turns out that IE9 (at least) needed a few ms to catch it's breath before correctly focusing on the starting element.

To do this, I just added a 100ms delay before each test ran (Using Jasmine 2.3).

    beforeEach(function(done){
        loadFixtures('myfixture.html');

        // Setting focus in IE requires a delay to work correctly!
        setTimeout(function(){
            done();
        }, 100);
    });