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 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.adapter.mailbox;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import org.apache.james.core.Username;
import org.apache.james.mailbox.Authorizator;
import org.apache.james.mailbox.exception.MailboxException;
import org.apache.james.user.api.UsersRepository;
import org.apache.james.user.api.UsersRepositoryException;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

public class UserRepositoryAuthorizatorTest {
    private static final Username ADMIN = Username.of("admin");
    private static final Username USER = Username.of("user");

    private UsersRepository usersRepository;
    private UserRepositoryAuthorizator testee;

    @BeforeEach
    public void setUp() throws Exception {
        usersRepository = mock(UsersRepository.class);
        testee = new UserRepositoryAuthorizator(usersRepository);
    }

    @Test
    void canLoginAsOtherUserShouldThrowMailboxExceptionWhenIsAdministratorThrows() throws Exception {
        when(usersRepository.isAdministrator(ADMIN))
            .thenThrow(new UsersRepositoryException("expected error"));

        assertThatThrownBy(() -> testee.canLoginAsOtherUser(ADMIN, USER))
            .isInstanceOf(MailboxException.class);
    }

    @Test
    void canLoginAsOtherUserShouldReturnNotAdminWhenNotAdminAndNoUser() throws Exception {
        when(usersRepository.isAdministrator(ADMIN))
            .thenReturn(false);
        when(usersRepository.contains(USER))
            .thenReturn(false);
        
        assertThat(testee.canLoginAsOtherUser(ADMIN, USER)).isEqualTo(Authorizator.AuthorizationState.NOT_ADMIN);
    }

    @Test
    void canLoginAsOtherUserShouldReturnNotAdminWhenNotAdminAndUser() throws Exception {
        when(usersRepository.isAdministrator(ADMIN))
            .thenReturn(false);
        when(usersRepository.contains(USER))
            .thenReturn(true);

        assertThat(testee.canLoginAsOtherUser(ADMIN, USER)).isEqualTo(Authorizator.AuthorizationState.NOT_ADMIN);
    }

    @Test
    void canLoginAsOtherUserShouldReturnUnknownUserWhenUserIsNotInRepository() throws Exception {
        when(usersRepository.isAdministrator(ADMIN))
            .thenReturn(true);
        when(usersRepository.contains(USER))
            .thenReturn(false);
        
        assertThat(testee.canLoginAsOtherUser(ADMIN, USER)).isEqualTo(Authorizator.AuthorizationState.UNKNOWN_USER);
    }

    @Test
    void canLoginAsOtherUserShouldReturnAllowedWhenAdminAndUserIsInRepository() throws Exception {
        when(usersRepository.isAdministrator(ADMIN))
            .thenReturn(true);
        when(usersRepository.contains(USER))
            .thenReturn(true);
        
        assertThat(testee.canLoginAsOtherUser(ADMIN, USER)).isEqualTo(Authorizator.AuthorizationState.ALLOWED);
    }

}
