Re: Rollback transactions in unit testing
On Sep 29, 2008, at 8:39 AM, Glauber Ferreira wrote: Hi all. I need to rollback transactions in order to revert all data modified (deleted, updated, created) by my tests. How can I do that in the test code listed in this link: http://openejb.apache.org/3.0/unit-testing-transactions.html Suggestions in this thread are pretty good. A couple additional possibilities to throw on the stack.. If you throw a runtime exception from the TransactionBean call method the container will rollback the transaction. Another option is to call the setRollbackOnly() method on the javax.ejb.SessionContext object. A session ejb can have it injected with a field declared like @Resource SessionContext sessionContext; -David
RE: Rollback transactions in unit testing
Marcin, the strategy you suggest should also work and is especially good for prototyping or smaller projects. In our case where we have a huge application with (1.5 Mio LoC, 1000 EJBs, 100 database tables with complex relationships) we cannot drop (or empty) and create tables in junit tests. This would heavily impact the development and testing. this is the reason why in such cases a rollback after a unit test instead of makes sense. [Marcin Kwapisz] I know. That's why we run as many unit tests as it is possible between server startup and shutdown. But how to properly test transaction without committing it? (The link in Glauber Ferreira's post concerns testing transactions). Can I rollback transaction that has been committed? We do not use BMT in our project. We tried to create unit test that in one transaction (CMT not BMT): 1. Creates initial set of data 2. Calls business method to modify/remove/(etc.) entities 3. Checks results. And that was not a good idea. The results of unit tests depended on JPA provider (or JPA settings), sometimes passed or sometimes not (the same test - that was really crazy). Manual flushing did not helped. We had to split that one transaction into three to make unit tests work properly. Regards -- Marcin Kwapisz Samodzielny Zakład Sieci Komputerowych Politechnika Łódzka
RE: Rollback transactions in unit testing
[Marcin Kwapisz] I do not understand why you want to rollback committed transaction, especially in unit test. Even, I do not know how to do it in JEE application. Maybe our way will suit you: 1. set drop and create strategy in persistence.xml (property name depends on JPA provider, we have separate file for unit testing) 2. Start OpenEJB (for example: perform ejb lookup) - database should be empty now 3. Create initial set of data in tables 4. Run test 5. Shutdown OpenEJB Now, you can repeat steps 2-5 for another tests Regards -- Marcin Kwapisz Division of Computer Networks Technical Univeristy of Lodz, Poland
RE: Rollback transactions in unit testing
Marcin, the strategy you suggest should also work and is especially good for prototyping or smaller projects. In our case where we have a huge application with (1.5 Mio LoC, 1000 EJBs, 100 database tables with complex relationships) we cannot drop (or empty) and create tables in junit tests. This would heavily impact the development and testing. this is the reason why in such cases a rollback after a unit test instead of makes sense. regards, andreas Marcin Kwapisz-2 wrote: [Marcin Kwapisz] I do not understand why you want to rollback committed transaction, especially in unit test. Even, I do not know how to do it in JEE application. Maybe our way will suit you: 1. set drop and create strategy in persistence.xml (property name depends on JPA provider, we have separate file for unit testing) 2. Start OpenEJB (for example: perform ejb lookup) - database should be empty now 3. Create initial set of data in tables 4. Run test 5. Shutdown OpenEJB Now, you can repeat steps 2-5 for another tests Regards -- Marcin Kwapisz Division of Computer Networks Technical Univeristy of Lodz, Poland -- View this message in context: http://www.nabble.com/Rollback-transactions-in-unit-testing-tp19724095p19749405.html Sent from the OpenEJB User mailing list archive at Nabble.com.
Rollback transactions in unit testing
Hi all. I need to rollback transactions in order to revert all data modified (deleted, updated, created) by my tests. How can I do that in the test code listed in this link: http://openejb.apache.org/3.0/unit-testing-transactions.html Thanks in advance. -- Glauber Vinícius Ventura de Melo Ferreira PGP: 0x5AA19EF5
Re: Rollback transactions in unit testing
We are also using openejb for junit testing. In our tests we are using
UserTransaction to control the test data. Maybe this approach might also
work for you.
Below is the basic code, the startup and shutdown of the container, as
well as starting/stopping transaction could also be moved to a base junit
class.
This works fine with openejb 3.0, in 3.1-SNAPSHOT the UserTransaction can
be retrieved with a jndi lookup (I think is java:openejb/UserTransaction)
public MyTest {
static MyService service;
UserTransaction tx;
@BeforeClass
public static void onBeforeClass() throws Exception{
// start openejb embeded container here
InitialContext ctx = new IntialContext(props);
// lookup service here
service = (MyService) ctx.lookup(java:openejb/MyServiceLocal);
}
@AfterClass
public static void onAfterClass() throws Exception{
// shutdown openejb
OpenEJB.destroy();
}
@Before
public void onBefore() throws Exception{
// start a UserTransaction for each test method
utx = new org.openejb.core.CoreUserTransaction()
utx.begin();
}
@After
public void onAfter() throws Exception{
utx.commit(); // you can do also a utx.rollback() here
}
//sample test method
@Test
public void testServiceMethod() throws Exception{
service.doSomething();
}
}
Regards,
Andreas
Glauber Ferreira-2 wrote:
Hi all.
I need to rollback transactions in order to revert all data modified
(deleted, updated, created) by my tests. How can I do that in the test
code
listed in this link:
http://openejb.apache.org/3.0/unit-testing-transactions.html
Thanks in advance.
--
Glauber Vinícius Ventura de Melo Ferreira
PGP: 0x5AA19EF5
--
View this message in context:
http://www.nabble.com/Rollback-transactions-in-unit-testing-tp19724095p19732849.html
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