public function testValues()
{
$this->isValueString(PhpProperty::create('x')->setValue('hello'));
$this->isValueInteger(PhpProperty::create('x')->setValue(2));
$this->isValueFloat(PhpProperty::create('x')->setValue(0.2));
$this->isValueBool(PhpProperty::create('x')->setValue(false));
$this->isValueNull(PhpProperty::create('x')->setValue(null));
}