Grails：單元測試域類約束給出了錯誤的結果

Question

我試圖寫我的域類的單元測試來測試約束，但我得到了意想不到的結果。這裏是我的域類：

class Student { 
    String firstName 
    String lastName 

    static constraints = { 
     firstName blank:false,minSize:2,maxSize:20,validator: { val, obj -> 
         def similarUser = Student.findByFirstNameIlikeAndLastNameIlike(obj.firstName, obj.lastName) 
         if(!similarUser || obj.id == similarUser.id){ 
         return ['Student.invalid.unique.message'] 
         } 
        } 
     lastName blank:false, minSize:2,maxSize:20 
    } 

} 

，這裏是我的單元測試：

@TestFor(Student) 
@Mock(Student) 
class StudentTests { 
    def st 

    @Before 
    void setUp(){  
     mockForConstraintsTests(Student)   
     st=new Student(firstName:"FerasO",lastName:"Ahmad")  

    } 


    @Test 
    void testMinSize() {     
     assertTrue student.validate() // I guess this should return true but It returns false 

    } 

} 

什麼是與回事？我怎麼解決它？

感謝，

Answer 1

我做錯了這個代碼：

if(!similarUser || obj.id == similarUser.id) 

應該if(similarUser && obj.id == similarUser.id)