Question

我正在尝试以下DAO的单元测试。

我无法识别DataSource。

我可以获得有关如何解决此问题的提示吗？

以下详细信息

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
public class EntityDaoTest {

    @Autowired 
    protected EntityDao entityDao;

    @Before
    public void setup()
    {

    }

    @Test
    public void test() throws InternalServerException
    {
        List<Entity> entities = entityDao.list();
        assert(entities.size()==0);
    }
}

DAO课程的相关方面如下

@Repository
public class EntityDao extends GenericDao<Entity>{

    public EntityDao(DataSource dataSource) {/.../}
}

我的src / test / resources / application.properties文件如下

# Database
spring.datasource.url=jdbc:mysql://localhost:3306/db
spring.datasource.username=dbuser
spring.datasource.password=dbpass

在Eclipse中作为JUnit测试运行的跟踪

java.lang.IllegalStateException: Failed to load ApplicationContext
...
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'entityController': Unsatisfied dependency expressed through field 'entityDao': Error creating bean with name 'entityDao' defined in file .../target/classes/hitstpa/dao/EntityDao.class]: Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type [javax.sql.DataSource] found for dependency [javax.sql.DataSource]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; 

...
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'entityDao' defined in file [/home/fmason/workspace/hitstpa/target/classes/hitstpa/dao/EntityDao.class]: Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type [javax.sql.DataSource] found for dependency [javax.sql.DataSource]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency [javax.sql.DataSource]: expected at least 1 bean which qualifies as autowire candidate for this dependency. ...`

申请结构

-src

- 主

--- java的

---- Application.java

---- COM

---- hitstpa

-----控制器

- - - - DAO

------ EntityDao.java

-----模型

---资源

---- application.properties

- 测试

--- java的

---- hitstpa

- - - - DAO

------ EntityDaoTestDOTjava

---资源

---- applicationDOTproperties

Answer 1

为了记录，我相信这不是一个好的单元测试。此测试要求localhost上存在mysql数据库。

无论如何，错误表明Spring Context未正确加载。使用SpringBootTest时，Spring会以root身份使用测试包来查找配置。因此，如果它是lower而不是您的配置类，则不会是它们。

看看Spring's documentation：

搜索算法从包含测试的包开始工作直到找到@SpringBootApplication或@SpringBootConfiguration 注释类。只要你在合理的情况下构建代码通常可以找到您的主要配置。

解决方案：

您可以将测试移动到与SpringBoot Main类相同的级别，也可以将其更改为：@SpringBootTest(classes = YourSpringBootMainClass.class)

Answer 2

首先，对于集成测试，您需要集成Db和一些固定数据。

现在您需要创建一个将创建的配置类集成测试特定依赖项（我将其命名为df = pd.concat([ts1, ts2], axis = 1, keys=['ts1','ts2']) df.index = df.index.values print (df) ts1 ts2 (a, A) 0.407183 0.866382 (b, B) 0.069167 0.975522 (c, C) 0.697429 0.855803 (d, D) 0.453543 0.011714 (e, E) 0.722056 0.359978 (f, F) NaN 0.729991）
接下来是在集成测试中添加DbConfig .java注释 class并提供@ContextConfiguration，以便在测试运行时它会创建DbConfig.java依赖项并将其注入容器

示例代码

datasource

用于DAO JUnit测试的SpringBootTest

2 个答案:

解决方案：