Mocking a directive in angularjs unit test - angularjs

Question

I know there is $controllerProvider which can be used, to create controllers inside unit tests. I'm wondering however if there is a way to mock a directive inside of a unit test.
The background to this is, that I'm trying to mock(! not to create) a directive which is applying an async validator to ngModel. Perfect would be something like this:
beforeEach(function () {
module('myMod', function($directiveProvider) {
$directiveProvider.register('mockAsyncValidationDirective', function() {
return {
restrict: 'EA',
require: 'ngModel'
// ...
}
});
});
});
Is there any way to do that?

Answer 1

I haven't found a way to mock a directive (maybe there isn't one atm), but I was able to solve my specific issue, by accessing the model-controller via the form controller.
Here is the code:
var scope = $rootScope.$new();
var html = '<form name="testForm">' +
'<input type="text" ng-model="username">' +
'</form>';
var element = $compile(html)(scope);
var form = scope.testForm;
var ngModel = form.username;
ngModel.$asyncValidators.unique = function (modelValue, viewValue)
{
var deferred = $q.defer();
$timeout(function ()
{
if (viewValue === 'NOT_UNIQUE') {
deferred.reject();
} else {
deferred.resolve();
}
});
return deferred.promise;
};
I still would be interested in an answer on how to mock a full directive.