How should flame-failure protection be evaluated when buying a rotating clay-pot cooker?

Before ordering a rotary claypot rice cooker, have the supplier simulate flame loss on the actual burner: close the gas valve or pull the sensor and time how long the solenoid takes to shut off gas. Then check whether relighting is manual or automatic. Test every burner head, not just one. Specify the probe model, maximum response time and pass criteria in the purchase order, and repeat the same test at the same gas pressure on arrival so catalogue claims match the delivered unit.