public void Delete_No_Choice()
{
var catMain = new CatMainModel("AIRBUS");
Product prod = null;
string test = catMain.DeleteProduct(prod);
Assert.AreEqual(test, "Please select a product first");
}
public void Delete_Product_Pass()
{
var catMain = new CatMainModel("AIRBUS");
Assert.IsNull(catMain.DeleteProduct(product));
}