如何用Spock模拟EntityManager和查询？

Question

entityManager.createNativeQuery("nativeQuery").setParameter(1, param1).getResultList()

Answer 1

您需要做的是构建一个相互返回的模拟层次结构，从最后一个开始：

查询：

def query = Mock(Query) {
   setParameter(_, _) >> it //here as mock itself is returned
   getResultList() >> []    //empty list
}

EntityManager：

def manager = Mock(EntityManager) {
   createNativeQuery(_) >> query
}

def 'fairy has just died'() {
   given:
   def query = Mock(Query) {
      setParameter(_, _) >> it //here as mock itself is returned
      getResultList() >> [1]    //empty list
   }

   def manager = Mock(EntityManager) {
      createNativeQuery(_) >> query
   }

   expect:
   manager.createNativeQuery("").setParameter(1,1).getResultList() == [1]
}