public function testOptionalField()
{
$this->v->required('optional_set_as_required')->with(new \Rule\UUID('v4'));
$this->v->optional('optional')->with(new \Rule\Alpha());
$this->v->optional('mdim[notvalid][optional]')->with(new \Rule\Alpha());
$this->v->key('mdim[valid][valid]')->with(new \Rule\Numeric());
$this->v->optional('mdim[valid][valid]')->with(new \Rule\Numeric());
$this->assertArrayNotHasKey('optional', $this->v->getErrors());
$this->assertArrayNotHasKey('mdim[notvalid][optional]', $this->v->getErrors());
$this->assertArrayHasKey('optional_set_as_required', $this->v->getErrors());
$this->assertArrayHasKey('mdim[valid][valid]', $this->v->getErrors());
}
