An ng-hide directive test taken from the AngularJS source to illustrate a simple directive test.

simpleDirectiveTest.js

describe('ngHide', function() {
  it('should hide an element', inject(function($rootScope, $compile) {
    var element = angular.element('<div ng-hide="exp"></div>');
    element = $compile(element)($rootScope);
    expect(element).toBeShown();
    $rootScope.exp = true;
    $rootScope.$digest();
    expect(element).toBeHidden();
  }));
});