How to Mock HttpSession and pass it as arguemnt to a method which works with session?

I am using Spring framework 2.4.4 and Intellij Ultimate 2020

I would like to test this method tryGetUser on which I am passing HttpSession, but I can't resolve the problem, because when I am mocking it and setAttribute(); at the //Arrange part of the method it always ends with currentUserUsername to be null.

    public User tryGetUser(HttpSession session) {          String currentUserUsername = (String) session.getAttribute("currentUserUsername");  ***// Here this local variable currentUsername is always null;***          if (currentUserUsername == null) {              throw new AuthorizationException("No logged in user.");          }            try {              return userService.getByUsername(currentUserUsername);          } catch (EntityNotFoundException e) {              throw new AuthorizationException("No logged in user.");          }      }  

Here you can see how I am trying to Mock it, but actually, the session is remaining empty or I don't know, but when the service method starts to execute the attribute is not there.

@ExtendWith(MockitoExtension.class)  public class LoginServiceMvcTests {        @Mock      UserRepository mockUserRepository;        @Mock      UserService mockUserService;        @InjectMocks      MockHttpSession mockHttpSession;        @InjectMocks      LoginServiceMvc userService;        private User junkie;      private User organizer;        @BeforeEach      public void setup() {          junkie = Helpers.createJunkie();          organizer = Helpers.createOrganizer();      }        @Test      public void tryGetUser_Should_GetUserFromSession_When_UserIsLogged() {            // Arrange          mockHttpSession.setAttribute("luboslav", junkie);          Mockito.when(mockUserService.getByUsername("luboslav"))                  .thenReturn(junkie);            // Act          userService.tryGetUser(mockHttpSession);            // Assert          Mockito.verify(mockUserService, Mockito.times(1))                  .getByUsername("luboslav");      }    }  

https://stackoverflow.com/questions/66961507/how-to-mock-httpsession-and-pass-it-as-arguemnt-to-a-method-which-works-with-ses April 06, 2021 at 09:03AM