How to mock persisting and Entity with Mockito and jUnit

Question

I\'m trying to find a way to test my entity using Mockito;

This is the simple test method:

@Mock
private EntityManager em;

@Test
public void persistArti         


        

Answer 1

similar answer as above, but with lambdas

   doAnswer((InvocationOnMock invocation) -> {
        Article article = (Article) invocation.getArguments()[0];
        article.setId(1L);
        return null;
    }).when(em).persist(any(Article.class));