How to make unit-test and test $scope 'onready' handler?

Is it possible at all?

I am creating controller and starting listening ready event by $scope.on('ready', ...);. Then I write in unit-test: $scope.$digest(); and 1 digest loop had been performed.

But, ready event will be broadcasted after "some" $digest loops, right? Maybe 10, maybe 100, maybe 100500 $digest loops could be performed before $scope ready.

So how I can do this? And do I need doing this?

For example, I can use this construction:

$scope.fooToBeCalledAfterReady = function () {

};
$scope.onReadyHandler = function () {
 $scope.fooToBeCalledAfterReady();
};
$scope.on('ready', $scope.onReadyHandler);

And in unit test I will just write:

it('onReadyHandler test', function () {
    spyOn($scope, 'fooToBeCalledAfterReady');
    $scope.onReadyHandler();
    expect($scope.fooToBeCalledAfterReady).toHaveBeenCalled();
});

Should I seek for some another way to test on scope ready?