如何使用Spock测试LocalContainerEntityManagerFactoryBean

Question

How can I test my db connection using spock? I know how to do this using JUnit and the test pass, but when I am trying do similar thing using Spock I am getting NullPointerException and Cannot invoke method getDataSource() on null object.

@SpringBootTest
@ContextConfiguration(classes = DatabaseConfig.class)
@WebAppConfiguration
class DatabaseConfigTest extends Specification {

    @Autowired
    LocalContainerEntityManagerFactoryBean entityManagerFactoryBean;

    def "Should connect to database."() {
        when:
        entityManagerFactoryBean.getDataSource().getConnection()
        then:
        notThrown(SQLException.class)
    }
}

How to test the DB connection using Spock, my class that is responsible for database configuration is DatabaseConfig.class

Answer 1

This should give you what you are looking for. Remove the ContextConfiguration and WebAppConiguration annotations. Inject DataSource directly.

@SpringBootTest
class DatabaseConfigTest extends Specification {

    @Autowired
    DataSource dataSource;

    def "Should connect to database."() {
        when:
        dataSource.getConnection()
        then:
        notThrown(SQLException.class)
    }
}