public function testGroup(FunctionalTester $I)
{
$I->wantTo('ensure that setting works');
$I->amOnPage(Url::to(['/setting/group', 'id' => 'general']));
$I->see('General Settings', 'h1');
$I->amGoingTo('update site title and tag line');
$I->fillField('input[name="Option[sitetitle][option_value]"]', 'My New Website');
$I->fillField('input[name="Option[tagline][option_value]"]', 'My New Website Tagline');
$I->click('Save');
$I->expectTo('see success message');
$I->see('Settings successfully saved.');
Option::up('sitetitle', 'WritesDown');
Option::up('tagline', 'CMS Built with Yii Framework');
}