尽管存在`@Transactional`，为什么不回滚这些数据库修改？

Question

为qazxsw poi写了一个简短的便利扩展：

Testcontainers

现在想测试一下。

• Flyway载入30个条目。这些应该在

  fun JdbcDatabaseContainer<*>.execute(query:DSLContext.()-> Query){
      val connection = DriverManager.getConnection(this.getJdbcUrl(),this.getUsername(),this.getPassword())
      val create = DSL.using(connection)
      create.query().execute()
  }

  中可见
• allDataPresent插入一个没有扩展名的条目
• canInsert也通过扩展功能做同样的事情
• canInsertWithExtension完全按照其名称暗示并插入另外5个

除了insertMultipleWithExtension测试用例之外的所有测试用例（因为那个是只读的）都是带注释的allDataPresent。

因此，我希望在测试方法之后回滚这些修改。

相反的是

@Transactional

每个

[ERROR] Failures: 
[ERROR]   InitDataIT.allDataPresent:70 
Expecting:
 <36>
to be equal to:
 <30>
but was not.
[ERROR]   InitDataIT.canInsert:90 
Expecting:
 <6>
to be equal to:
 <1>
but was not.
[ERROR]   InitDataIT.canInsertWithExtension:112 
Expecting:
 <6>
to be equal to:
 <1>
but was not.

都可以自行运行。所以问题必须在于@Test。

那为什么呢？更重要的是，我如何获得回滚？

完整的测试用例（也尝试注释类，没有任何区别）：

@Transactional

Answer 1

Spring

@Testcontainers
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@ContextConfiguration(initializers = [InitDataIT.TestContextInitializer::class])
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
open class InitDataIT {
    companion object {
        @JvmStatic
        @Container
        private val dbContainer = MySQLContainer<Nothing>().apply {
            withDatabaseName("test")
            withUsername("root")
            withPassword("")
        }
    }
    object TestContextInitializer: ApplicationContextInitializer<ConfigurableApplicationContext> {
        override fun initialize(applicationContext: ConfigurableApplicationContext) {
            TestPropertyValues.of(
                    "spring.datasource.url=${dbContainer.jdbcUrl}",
                    "spring.datasource.username=${dbContainer.username}",
                    "spring.datasource.password=${dbContainer.password}",
                    "spring.datasource.driver-class-name=${dbContainer.driverClassName}"
            ).applyTo(applicationContext)
        }
    }

    private val create:DSLContext


    @Autowired
    constructor(create:DSLContext){
        this.create = create
    }


    @Test
    fun allDataPresent(){
        //given
        val expectedNumberOfEntries = 30

        val query = create.selectCount()
                .from(CUSTOMERS)

        //when
        val numberOfEntries = query.fetchOne{it.value1()}

        //then
        Assertions.assertThat(numberOfEntries).isEqualTo(expectedNumberOfEntries)
    }

    @Test
    @Transactional
    open fun canInsert(){
        //given
        val insertquery = create.insertInto(CUSTOMERS)
                .columns(CUSTOMERS.FIRSTNAME,CUSTOMERS.LASTNAME,CUSTOMERS.EMAIL, CUSTOMERS.STATUS)
                .values("Alice","Tester","[email protected]",CustomerStatus.Contacted.name)

        val expectedNumberInOffice2 = 1

        //when
        insertquery.execute()

        //then
        val numberInOffice2 = create.selectCount()
                .from(CUSTOMERS)
                .where(CUSTOMERS.EMAIL.contains("somewhere"))
                .fetchOne{it.value1()}
        assertThat(numberInOffice2).isEqualTo(expectedNumberInOffice2)

    }

    @Test
    @Transactional
    open fun canInsertWithExtension(){
        //given
        dbContainer.execute {
            insertInto(CUSTOMERS)
                    .columns(CUSTOMERS.FIRSTNAME,CUSTOMERS.LASTNAME,CUSTOMERS.EMAIL, CUSTOMERS.STATUS)
                    .values("Alice","Tester","[email protected]",CustomerStatus.Contacted.name)
        }

        val expectedNumberInOffice2 = 1

        //when
        val numberInOffice2 = create.selectCount()
                .from(CUSTOMERS)
                .where(CUSTOMERS.EMAIL.contains("somewhere"))
                .fetchOne{it.value1()}

        //then
        assertThat(numberInOffice2).isEqualTo(expectedNumberInOffice2)

    }

    @Test
    @Transactional
    open fun insertMultipleWithExtension(){
        //given
        dbContainer.execute {
            insertInto(CUSTOMERS)
                    .columns(CUSTOMERS.FIRSTNAME,CUSTOMERS.LASTNAME,CUSTOMERS.EMAIL, CUSTOMERS.STATUS)
                    .values("Alice","Make","[email protected]", CustomerStatus.Customer.name)
                    .values("Bob","Another","[email protected]", CustomerStatus.ClosedLost.name)
                    .values("Charlie","Integration","[email protected]",CustomerStatus.NotContacted.name)
                    .values("Denise","Test","[email protected]",CustomerStatus.Customer.name)
                    .values("Ellie","Now","[email protected]",CustomerStatus.Contacted.name)
        }

        val expectedNumberInOffice2 = 5

        //when
        val numberInOffice2 = create.selectCount()
                .from(CUSTOMERS)
                .where(CUSTOMERS.EMAIL.contains("somewhere"))
                .fetchOne{it.value1()}

        //then
        assertThat(numberInOffice2).isEqualTo(expectedNumberInOffice2)
    }

}

注释不仅与你的@Transactional创建的JDBC连接神奇地起作用。您的DriverManager对象应该在您的Spring托管数据源上运行。