public function testCreateDefaults()
{
$cartItem = new CartItem();
$this->assertSame(null, $cartItem->getQuantity());
$this->assertSame(null, $cartItem->getProduct());
$this->assertSame(null, $cartItem->getCart());
$this->assertSame(0, count($cartItem->getCartItemOptionProducts()));
$this->assertSame(0, count($cartItem->getCartItemOptionValues()));
$this->assertSame(0, count($cartItem->getCartItemTextOptionValues()));
$this->assertSame(0, count($cartItem->getAttachments()));
}