使用Mockido错误对POST请求进行单元测试

import org.junit.Test;
import org.mockito.Mockito;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

import static org.junit.Assert.assertEquals;

public class PostRequestUnitTest {

    @Test
    public void testPostRequestWithError() {
        // 创建一个模拟的RestTemplate对象
        RestTemplate restTemplateMock = Mockito.mock(RestTemplate.class);

        // 设置模拟的RestTemplate对象在发送POST请求时返回错误的响应
        ResponseEntity<String> errorResponse = new ResponseEntity<>("Error", HttpStatus.INTERNAL_SERVER_ERROR);
        Mockito.when(restTemplateMock.postForEntity(Mockito.anyString(), Mockito.any(), Mockito.any()))
                .thenReturn(errorResponse);

        // 创建被测试的对象，并将模拟的RestTemplate对象注入其中
        MyService myService = new MyService(restTemplateMock);

        // 调用被测试的方法
        String result = myService.processPostRequest();

        // 验证结果是否符合预期
        assertEquals("Error", result);
    }
}

class MyService {
    private RestTemplate restTemplate;

    public MyService(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }

    public String processPostRequest() {
        // 发送POST请求并处理响应
        ResponseEntity<String> response = restTemplate.postForEntity("http://example.com/api", null, String.class);
        if (response.getStatusCode() == HttpStatus.OK) {
            return response.getBody();
        } else {
            return "Error";
        }
    }
}