gpt写的

为 restoreSnapshotIndices 方法编写单元测试，需要覆盖以下关键逻辑：

1. 请求参数为空时抛出异常。
2. 调用 restoreSnapshot 方法对每个 SnapShotDTO 的逻辑。
3. 捕获 IOException 并验证日志输出和错误处理逻辑。
4. 正确返回 RestoreSnapshotIndicesResponse 的结果。

以下是单元测试代码示例（假设使用 JUnit 5 和 Mockito）：

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.*;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;

class SnapshotServiceImplTest {

    @InjectMocks
    private SnapshotServiceImpl snapshotService;

    @Mock
    private RestHighLevelClient restHighLevelClient;

    @Mock
    private ElasticSearchService elasticSearchService;

    @Mock
    private IndicesRestoreMapper indicesRestoreMapper;

    @Mock
    private IndicesRestoreRecordMapper indicesRestoreRecordMapper;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    @Test
    void testRestoreSnapshotIndices_NullRequest() {
        RestoreSnapshotIndicesRequest request = null;
        Exception exception = assertThrows(TitanException.class, () -> {
            snapshotService.restoreSnapshotIndices(request);
        });
        assertEquals("所传参数为空!", exception.getMessage());
    }

    @Test
    void testRestoreSnapshotIndices_EmptySnapshotList() {
        RestoreSnapshotIndicesRequest request = new RestoreSnapshotIndicesRequest();
        request.setSnapShotList(Collections.emptyList());

        Exception exception = assertThrows(TitanException.class, () -> {
            snapshotService.restoreSnapshotIndices(request);
        });
        assertEquals("所传参数为空!", exception.getMessage());
    }

    @Test
    void testRestoreSnapshotIndices_Success() throws IOException {
        SnapShotDTO snapShotDTO = new SnapShotDTO();
        snapShotDTO.setRepositoryName("repo1");
        snapShotDTO.setSnapshotName("snapshot1");
        snapShotDTO.setIndices(Arrays.asList("index1", "index2"));

        RestoreSnapshotIndicesRequest request = new RestoreSnapshotIndicesRequest();
        request.setSnapShotList(Collections.singletonList(snapShotDTO));

        doNothing().when(snapshotService).restoreSnapshot(
                anyString(), anyString(), anyList(), any(), anyLong()
        );

        RestoreSnapshotIndicesResponse response = snapshotService.restoreSnapshotIndices(request);

        assertNotNull(response);
        assertEquals(0, response.getSuccess());
        verify(snapshotService, times(1)).restoreSnapshot(
                "repo1", "snapshot1", Arrays.asList("index1", "index2"), null, 0L
        );
    }

    @Test
    void testRestoreSnapshotIndices_Failure() throws IOException {
        SnapShotDTO snapShotDTO = new SnapShotDTO();
        snapShotDTO.setRepositoryName("repo1");
        snapShotDTO.setSnapshotName("snapshot1");
        snapShotDTO.setIndices(Arrays.asList("index1", "index2"));

        RestoreSnapshotIndicesRequest request = new RestoreSnapshotIndicesRequest();
        request.setSnapShotList(Collections.singletonList(snapShotDTO));

        doThrow(new IOException("Test exception")).when(snapshotService).restoreSnapshot(
                anyString(), anyString(), anyList(), any(), anyLong()
        );

        RestoreSnapshotIndicesResponse response = snapshotService.restoreSnapshotIndices(request);

        assertNotNull(response);
        assertEquals(-1, response.getSuccess());
        verify(snapshotService, times(1)).restoreSnapshot(
                "repo1", "snapshot1", Arrays.asList("index1", "index2"), null, 0L
        );
    }
}

说明

1. 使用了 Mockito 来模拟依赖和方法调用。
2. 测试场景包括：
   • 空请求。
   • 空 snapShotList。
   • 恢复成功。
   • 恢复失败抛出异常。
3. 验证了正确的方法调用次数和参数。

前提

• 确保 restoreSnapshot 是 public 或者 protected，以便可以通过 Mockito 进行 spy 或 mock。
• 配置好测试环境，加载所有依赖类和配置。