public function testPropertiesAccess()
{
$cls = new \vc\Data\Type\Cls(123);
$this->assertSame(array(), $cls->getProperties());
$prop1 = new \vc\Data\Property(1);
$this->assertSame($cls, $cls->addProperty($prop1));
$this->assertSame(array($prop1), $cls->getProperties());
$prop2 = new \vc\Data\Property(1);
$this->assertSame($cls, $cls->addProperty($prop2));
$this->assertSame(array($prop1, $prop2), $cls->getProperties());
}