import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.mockito.Mockito.when;

@RunWith(MockitoJUnitRunner.class)
public class UserServiceTest {
    private static final String VALID_USERNAME = "VALID_USERNAME";
    private static final String VALID_PASSWORD = "VALID_PASSWORD";

    @Mock
    UserRepostitory userRepostitory;

    UserService userService;

    @Before
    public void createUserService() {
        userService = new UserService(userRepostitory);
    }

    @Test
    public void should_returnTrue_ifUsernameAndPasswordAreInvalid() {
        when(userRepostitory.findByUsernameAndPassword(VALID_USERNAME, VALID_PASSWORD)).thenReturn(true);

        boolean success = userService.login(VALID_USERNAME, VALID_PASSWORD);

        assertThat(success, is(equalTo(true)));
    }

}