assertEquals the returned value of method which returns a dynamic value

Question

Problem description- I am trying to test my login method which returns an object of AuthenticationResponse which contains four fields-username,jwt token,refresh token,and expiry Time for the jwt token.

public class **AuthenticationResponse** {
    private String userName;
    private String jwtToken;
    private Instant expiresAt;
    private String refreshToken;
}

My Login method(method to be tested) is in AuthService class.

@Service
public class AuthService
{
    public AuthenticationResponse login(LoginRequest loginRequest)
    {
       //some logic going on...
       Instant expiresAt=Instant.now().plusMillis(900*1000);
        //some logic going on
        return authenticationResponse;

    }
}

My Test class goes like this->

public class AuthServiceTest
{
    @InjectMocks
    private AuthService authService;
    @Test
    public void loginTest_whenCredentialsAreCorrect()
    {
      ///some logic goes over here...
      AuthenticationResponse authenticationResponse=new AuthenticationResponse();
      authenticationResponse.setJwtToken("jwttest");
      authenticationResponse.setUserName("jack");
      authenticationResponse.setRefreshToken("jwt1");
    authenticationResponse.setExpiresAt(Instant.now().plusMillis(900000));
     assertEquals(authenticationResponse,authService.login(loginRequest));
  
    }
}

I have written my logic inside the method which assigns the value for expiresAt field like this

Instant expiresAt=Instant.now().plusMillis(900*1000)

Now,in how can I assign the same value for that field(expiresAt) while creating the object of AuthenticationResponse to assert it with the returned value from method.

I can't get any way to match the value of this field with the value returned from the method.

My Test fails showing this output:

org.opentest4j.AssertionFailedError:

Expected :AuthenticationResponse(userName=jack, jwtToken=jwttest, expiresAt=2020-07-30T13:40:45.828Z, refreshToken=jwt1)

Actual :AuthenticationResponse(userName=jack, jwtToken=jwttest, expiresAt=2020-07-30T13:40:45.840Z, refreshToken=jwt1)

Is there any way around to solve this problem??

score 0 · Accepted Answer · answered Jul 30 '20 at 13:09

0

You can mock the expiresAt value. Please refer below link to find various methods of doing it. https://www.baeldung.com/java-override-system-time

answered Jul 30 '20 at 13:09

Reshmi Nair

29
3

Thanks for the help.Powermock is still not supported with Junit5.I found an answer over. here. https://stackoverflow.com/questions/27067049/unit-testing-a-class-with-a-java-8-clock – Jaivardhan Jul 31 '20 at 06:45

assertEquals the returned value of method which returns a dynamic value

1 Answers1