发布于2021-10-13 19:41 阅读(660) 评论(0) 点赞(28) 收藏(3)
我试图在我的 DAO 类中模拟一个休息模板,但 Mockito 抛出奇怪的错误,说它无法模拟。
试图涵盖我的 Spring Boot 应用程序 2.x 版的单元测试用例。我几乎已经在互联网上尝试了所有可能的解决方案,例如更新 JDK/JRE 以进行编译,但我遇到了以下错误:
org.mockito.exceptions.base.MockitoException:
Mockito cannot mock this class: class org.springframework.web.client.RestTemplate.
Mockito can only mock non-private & non-final classes.
If you're not sure why you're getting this error, please report to the mailing list.
Java : 1.8
JVM vendor name : Oracle Corporation
JVM vendor version : 25.181-b13
JVM name : Java HotSpot(TM) 64-Bit Server VM
JVM version : 1.8.0_181-b13
JVM info : mixed mode
OS name : Windows 10
OS version : 10.0
Underlying exception : java.lang.IllegalArgumentException: Could not create type
at org.mockito.junit.jupiter.MockitoExtension.beforeEach(MockitoExtension.java:115)
....
以下是我的代码:
构建.gradle
dependencies {
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-data-rest'
implementation 'org.springframework.retry:spring-retry'
implementation 'org.aspectj:aspectjrt'
implementation 'org.aspectj:aspectjweaver'
implementation 'org.springframework:spring-aop'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
testImplementation 'org.junit.jupiter:junit-jupiter-api:5.2.0'
testCompile 'org.junit.jupiter:junit-jupiter-params:5.2.0'
testRuntime 'org.junit.jupiter:junit-jupiter-engine:5.2.0'
testImplementation 'org.mockito:mockito-core:2.+'
testImplementation 'org.mockito:mockito-junit-jupiter:2.18.3'
}
test {
testLogging.showStandardStreams = true
useJUnitPlatform()
}
我的道
@Repository
public class MyDao {
@Value("${app.prop.service.url}")
private String url;
@Autowired
public RestTemplate restTemplate;
public String getSignals() {
System.out.println("url -----------------------> " + url);
return new RetryTemplate().execute(context -> {
ResponseEntity<String> response = restTemplate.getForEntity(url, String.class);
if (response.getStatusCodeValue() == 200) {
System.out.println("Server response -> " + response.getBody());
return response.getBody();
} else {
throw new RuntimeException("server response status: " + response.getStatusCode());
}
}, context -> {
System.out.println("retry count: " + context.getRetryCount());
System.err.println("error -> " + context.getLastThrowable());
return null;
});
}
}
MyDaoTest.java
@ExtendWith(MockitoExtension.class)
public class MyDaoTest {
@Mock
private RestTemplate restTemplate;
@InjectMocks
private MyDao dao;
@BeforeEach
public void prepare() {
ResponseEntity<String> response = new ResponseEntity<>("{name: myname}", HttpStatus.OK);
Mockito.doReturn(response).when(restTemplate.getForEntity(Mockito.anyString(), String.class));
}
@Test
public void testGetSignals() {
System.out.println("------------------TEST-------------------");
String result = dao.getSignals();
System.out.println("result ------>" + result);
assertEquals("{name: myname}", result);
}
}
RestTemplate 的 BeanConfig
@Bean
public RestTemplate restTemplate() {
// block of code for SSL config for HTTPS connection
return new RestTemplate();
}
任何建议都会非常有帮助
PS:应用程序通过 gradle 命令运行得很好
gradlew bootRun
问题仅在于单元测试
gradlew test
Okay, I solved the problem. It was a version mismatch between mockito-core and mockito-junit-jupiter jars, which was causing thr problem.
The correct dependency is:
testImplementation 'org.junit.jupiter:junit-jupiter-api:5.2.0'
testCompile 'org.junit.jupiter:junit-jupiter-params:5.2.0'
testRuntime 'org.junit.jupiter:junit-jupiter-engine:5.2.0'
testImplementation 'org.mockito:mockito-core:2.18.3'
testImplementation 'org.mockito:mockito-junit-jupiter:2.18.3'
Earlier, it was
testImplementation 'org.mockito:mockito-core:2.+'
Gradle was picking the latest version of mockito-core jar since it was asked to pick any version in the 2.x series, as defined in the build file. I believe the rest is self explanatory.
Happy, Unit testing! :P
作者:黑洞官方问答小能手
链接:http://www.javaheidong.com/blog/article/300213/471d319429a48400e404/
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