java - 用于 DAO JUnit 测试的 SpringBootTest

Question

我正在尝试对 DAO 进行以下单元测试。

我无法识别数据源。

我可以获得有关如何解决此问题的提示吗？

详情如下

@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类的相关方面如下

@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. ...`

应用程序结构

-src

--主要

---java

----Application.java

----com

----hitstpa

----- Controller

-----dao

------EntityDao.java

-----型号

---资源

----application.properties

--测试

---java

----hitstpa

-----dao

------EntityDaoTestDOTjava

---资源

----应用程序DOT属性

Answer 1

首先，对于集成测试，您需要一个包含一些固定数据的集成数据库。

• 现在您需要创建一个配置类来创建集成测试特定依赖项(我将其命名为 DbConfig
.java)
• 下一步是向集成测试添加@ContextConfiguration注释类并提供DbConfig.java，这样当测试运行时它将创建datasource依赖项并将其注入(inject)到容器

示例代码

    @Configuration
    public class DbConfig {

    @Bean
    public DataSource dataSource() {

        //Create the DataSource with integration-DB properties

        return dataSource;
    }
}

    @RunWith(SpringJUnit4ClassRunner.class)
    @SpringBootTest
    @ContextConfiguration(classes=DbConfig.class)
    public class EntityDaoTest {

    }