如何在JUnit测试中(在容器外部)模拟TransactionManager？

   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.12</version>
   <scope>test</scope>
</dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-test</artifactId>
   <version>5.3.10</version>
   <scope>test</scope>
</dependency>

import org.mockito.Mock;
import org.springframework.transaction.PlatformTransactionManager;

public class YourTestClass {
    @Mock
    private PlatformTransactionManager transactionManager;
}

import org.mockito.MockitoAnnotations;

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

@Test
public void testTransaction() {
    // 创建一个模拟的TransactionStatus对象
    TransactionStatus transactionStatus = Mockito.mock(TransactionStatus.class);

    // 设置TransactionManager的预期行为
    Mockito.when(transactionManager.getTransaction(Mockito.any(DefaultTransactionDefinition.class)))
        .thenReturn(transactionStatus);

    // 执行事务操作
    yourService.performTransaction();

    // 验证TransactionManager的行为
    Mockito.verify(transactionManager, Mockito.times(1)).commit(transactionStatus);
}