Disabling the purchase of only one variable-product with specific attribute value in woocommerce

I want some specific products to be bought only with other products in one order, and not solo!
I have some variable-product with “Tester” value for “Size” attribute, i dont want customers to only buy them in one order!
I’ll appriciate if you could help me!

I expect when a customer select only this type of product, woocomerce does not allow customer to proceed and an error message be shown!