angularjs - How do I check if my element has been focussed in a unit test

Question

I have the following directive to autofocus a field:

.directive('ngAutofocus', function ($timeout) {
    return {
        restrict: 'A',
        link: function (scope, elm) {
                $timeout(function () {
                elm[0].focus();
            });
        }
    };
}

How would I unit test this? I tried several things like the following selector but they all return errors or false:

console.log($(elm[0]).is(':focus'));

My unit test is set up like this:

elm = angular.element('<input type="text"  name="textfield1" ng-autofocus>');
$scope.$digest();
$compile(elm)($scope);

Answer 1

I figured it out, and it was pretty obvious actually;

it('should set the focus on timeout', function () {
    spyOn(elm[0],'focus');
    $timeout.flush();
    expect(elm[0].focus).toHaveBeenCalled();
})

My problem was two-fold:

1. I wasn't calling the timeout flush function so timeout wasn't occuring, and
2. I was trying to look at the focus attribute of the element whereas just looking at the call of the focus() function is much more like unit-testing. The focus attribute is something that really belongs to the e2e testing territory.