无法测试CSV上载java spring的控制器

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.ResultActions;

import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@SpringJUnitConfig
@SpringBootTest
@AutoConfigureMockMvc
public class CsvUploadControllerTest {

    private final MockMvc mockMvc;

    public CsvUploadControllerTest(MockMvc mockMvc) {
        this.mockMvc = mockMvc;
    }

    @Test
    public void testCsvUploadController() throws Exception {
        // 1. 准备测试数据
        String csvData = "id,name\n1,John\n2,Jane";
        Path tempFile = Files.createTempFile("test", ".csv");
        Files.write(tempFile, csvData.getBytes(StandardCharsets.UTF_8));

        // 2. 构建MockMultipartFile
        MockMultipartFile file = new MockMultipartFile(
                "file",
                "test.csv",
                MediaType.TEXT_PLAIN_VALUE,
                Files.readAllBytes(tempFile)
        );

        // 3. 发送CSV文件上传请求
        ResultActions resultActions = mockMvc.perform(
                multipart("/upload")
                        .file(file)
        );

        // 4. 验证结果
        resultActions.andExpect(status().isOk());
        // 可以继续验证其他的响应结果
    }
}