junit- sonarQube test coverage : if condition

can you help me how I can cover if statement by junit test in this method:

This is my Method in the controller “User” :

@GetMapping(value = "/informationUser") 
public ResponseEntity<Utilisateur> getAllInformationAboutUser() {
    Utilisateur user = null; // Fully covered By tests
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); // Fully covered By tests
    if (authentication != null) { // Partially covered by Tests
        user = userService.findUserByLogin(authentication.getName()); // Not covered by Tests
    }
    return new ResponseEntity<>(user, HttpStatus.OK); Fully covered By tests
}

My problem is with the 2 lines of the if statment, I don’t know how i want to cover them.

This is my test code for this method :

Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); 
ResponseEntity<Utilisateur> responseEntity16 = userController.getAllInformationAboutUser();
    
SecurityContextHolder.clearContext();
ResponseEntity<Utilisateur> responseEntity15 = userController.getAllInformationAboutUser();

Thank you in advance for your help

Answer

You need to create a temporary Authentication information

@Test
public void getAllInformationAboutUserTest() {
    
    // If you use Mockito -> Mockito.mock(Authentication.class)
    SecurityContextHolder.getContext().setAuthentication(new TestingAuthenticationToken("foo", "bar"));
    ResponseEntity<Utilisateur> responseEntity16 = userController.getAllInformationAboutUser();
        
    SecurityContextHolder.clearContext();
    ResponseEntity<Utilisateur> responseEntity15 = userController.getAllInformationAboutUser();
}

Result: