In order to test my program I need to mock a method call like:
entityManager.createQuery("SELECT...", Integer.class).getSingleResult()
the createQuery part returns a TypedQuery<Integer>, but I actually just want to return a single integer: 1.
Currently I am using Mockito in order to create my mocks and I am pretty new to this.
Is there a way of testing this?
Thank you!
Assuming you have class EntityManager, Query. You can mock your test like below. (mock(), any(), when() ... methods are in Mockito)
int result = 1;
Query query = mock(Query.class);
EntityManager entityManager = mock(EntityManager.class);
when(entityManager.createQuery(any(), any()).thenReturn(query);
when(query.getSingleResult()).thenReturn(result);
Mock the EntityManager and then you can pre-define the returning-value. Mockito.doReturn(1).when(entityManagerMock).createQuery(any(String.class), any());
