【SpringBoot】mockito+junit 单元测试-Toy模板网

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1.POM 引入以下依赖

      <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <scope>test</scope>
        </dependency>
     <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <version>2.5.2</version>
            <scope>test</scope>
        </dependency>

2.Service层接口单元测试示例

package xxx.xxx.xxx;

import org.apache.commons.collections.CollectionUtils;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
import org.mockito.junit.MockitoJUnitRunner;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.Arrays;



@RunWith(MockitoJUnitRunner.class)
@Slf4j
class CommonServiceImplTest {


    @Autowired
    @InjectMocks
    CommonServiceImpl commonService;

    @Mock
    ServiceA  serviceA;

    @Mock
    ServiceB  servieB;



    private QueryBo queryBO;



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

    @Test
    void getSourceCodeMap() {
        queryBO = new QueryBO();
        queryBO.setFieldA("A");
        queryBO.setFieldB("B"); 

        CommonEntity entity = new CommonEntity ();
        entity.setField1("1");
        entity.setField2("2");
        Mockito.when(serviceA.list(queryBO)).thenReturn(Arrays.asList(new CommonEntity []{entity}));
        Assert.assertNotNull(commonService.getSourceCodeMap());
    }

CommonServiceImpl 在方法getSourceCodeMap()调用了ServiceA的方法list(QueryBO queryBo)。

3. 常见问题

3.1 MockitoException

org.mockito.exceptions.base.MockitoException:
No tests found in ClientSyncServiceImplTest
Is the method annotated with @Test?
Is the method public?

解决方案：
Test引入org.junit.Test 不要引入org.junit.jupiter.api.Test

3.2 ThreadLocal类对象Mock

例如获取当前用户

@Component
public class CurrentUtil {
    public CurrentUtil() {
    }

    public static Optional<User> getUser() {
        return Optional.ofNullable(((CommonAuditService)SpringContextUtil.getBean(CommonAuditService.class)).getUser(new String[0]));
    }

 }

mock示例：

public XXXTest{
    // ....

    @Before
    public void setUp(){
        MockitoAnnotations.openMocks(this);
        MockedStatic<CurrentUtil> userUtil = Mockito.mockStatic(CurrentUtil.class);
        userUtil.when(()->CurrentUtil.getUser()).thenReturn(1L);
    }
	//...
}

3.3 MybatisPlusException

com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: com.cscs.icrg.universal.rating.entity.UniMainScaleDetailEntity Not Found TableInfoCache.
at com.baomidou.mybatisplus.core.toolkit.ExceptionUtils.mpe(ExceptionUtils.java:49)

【SpringBoot】mockito+junit 单元测试,spring boot,单元测试
解决方法如下:


public XXXTest{
    // ....

    @Before
    public void setUp(){
		 TableInfoHelper.initTableInfo(new MapperBuilderAssistant(new MybatisConfiguration(),""), XXXXEntity.class);

        // ...
    }
	//...
}

3.3 void方法调用

使用doNothing()

@Test
public void test() {
   doNothing().when(mockedService).updateXXX(anyLong(),anyString());
 
   userService.updateName(1L,"11");
     
   verify(mockedService, times(1)).updateXXX(1L,"dddd");
}

3.4 运行时注入

使用反射修改，例如

服务AServiceImpl

public class AServiceImpl implements Service{
	//....

	private ClassXXX fieldPostInitBean;

	@PostContruct
	void init() {
		fieldPostInitBean = SpringContextUtil.getBean(xxxxx);
	}
	//...

}

AServiceImplTest文章来源地址https://www.toymoban.com/news/detail-698928.html

//...
public Class AServiceImplTest {

	@InjectMock
	AServiceImpl impl;

	@Mock
	ClassXXX fieldPostInitBean;

	@Before
	void before() {
	  MockitoAnnotations.initMocks(this);
      Field field = IcrgWarningWorkflowServiceImpl.class.getDeclaredField("fieldPostInit");
      field.setAccessible(true);
      field.set(this.impl,fieldPostInitBean);
	}
	//....
}