public CookerPromotion SecondCookerPromotion()
 {
     var firstCookerPromotion = new CookerPromotion
     {
         CookerPromotionId = 2,
         CookerId = 3,
         PromotionId = 2
     };
     return firstCookerPromotion;
 }
 public CookerPromotion ThirdCookerPromotion()
 {
     var thirdCookerPromotion = new CookerPromotion
     {
         CookerPromotionId = 3,
         CookerId = 3,
         PromotionId = 3
     };
     return thirdCookerPromotion;
 }
 public CookerPromotion FirstCookerPromotion()
 {
     var firstCookerPromotion = new CookerPromotion
     {
         CookerPromotionId = 1,
         CookerId = 2,
         PromotionId = 1
     };
     return firstCookerPromotion;
 }