如何修复UnfinishedStubbingException

Question

@MockBean
private RestTemplateBuilder restTemplateBuilder;

@MockBean
private RestTemplate restTemplate;

@InjectMocks
private FetchCoreVersionsList fetchCoreVersionsList;

 @Test
public void testCoreVersionsJsonHandle() throws Exception{
    when(restTemplate.getForObject("https://openmrs.jfrog.io/openmrs/api/storage/public/org/openmrs/api/openmrs-api/",
            String.class))
            .thenReturn(new ObjectMapper().readValue(getFileAsString("core-versions.json"), String.class));

}

在运行测试时，我得到以下错误

org.mockito.exceptions.misusing.UnfinishedStubbingException: 

在这里检测到未完成的顽固性: org.openmrs.addonindex.scheduled.FetchCoreVersionsListIT.testCoreVersionsJsonHandle(FetchCoreVersionsListIT.java:66)的->

我对创建测试用例非常陌生，所以请耐心地忍受我的一些愚蠢之处:)

Answer 1

下面是如何在SpringBoot2.0中实现它：

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.web.client.RestTemplate;

@SpringBootTest @RunWith(SpringRunner.class)
public class myTests() {

    @MockBean RestTemplate restTemplate;

    @Test
    public void test1() {
        String uri = "http://example.org", msg="hello";
        Mockito.doReturn(msg).when(restTemplate).getForObject(eq(uri),any());
        String response = restTemplate.getForObject(uri,String.class);
        Mockito.verify(restTemplate).getForObject(eq(uri),any());
        assertEquals(response,msg);
    }

}

Mockito提供了两个不同的语法：Mockito - difference between doReturn() and when()

Mockito.doReturn(new ResponseEntity<String>("200 OK",HttpStatus.OK)).when(restTemplate).postForEntity(eq(url),any(),eq(String.class));
// or
Mockito.when(restTemplate.postForEntity(eq(url), any(), eq(String.class))).thenReturn(new ResponseEntity<String>("200 OK", HttpStatus.OK));

还有其他的窍门，比如使用eq(String.class)而不仅仅是String.class。错误输出试图引导您完成此过程。