TransactionalChildBean child = getInstance(TransactionalChildBean.class);
Assert.assertNotNull(child);
Assert.assertEquals(0, TransactionInterceptor.count);
Assert.assertEquals("21", child.doHalf());
Assert.assertTrue(TransactionInterceptor.ECHO);
Assert.assertEquals(1, TransactionInterceptor.count);
TransactionInterceptor.ECHO = false;
TransactionInterceptor.count = 0;