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Date: Mon, 25 Jul 2011 13:41:09 +0000 (UTC)
From: "Dag H. Wanvik (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
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Subject: [jira] [Commented] (DERBY-4249) Create a simple store recovery test
 in JUnit
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    [ https://issues.apache.org/jira/browse/DERBY-4249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13070495#comment-13070495 ] 

Dag H. Wanvik commented on DERBY-4249:
--------------------------------------

I tried to let the nested VM exit with a System.exit(1) but the top level test still passed. I guess the top level test should discover if its child exited with anything but clean status?

Should the nested system out from running the JUnit be visible on the top level System.out by default? It could get confusing as we add more fixtures what belongs to what level...

Another question, the way the nested VM's database is stopped now, we do get a checkpoint performed, although the transaction is not rolled back (I checked the log file with Rick's LogFileReader and saw a checkpoint operation, but no logical undo). Is this the way it happens in the old recovery tests or do they not lead to checkpoints?


> Create a simple store recovery test in JUnit
> --------------------------------------------
>
>                 Key: DERBY-4249
>                 URL: https://issues.apache.org/jira/browse/DERBY-4249
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>    Affects Versions: 10.6.1.0
>            Reporter: Kathey Marsden
>            Assignee: Siddharth Srivastava
>            Priority: Minor
>         Attachments: d4249.diff, d4249_1.diff, d4249_2.diff, d4249_3.diff
>
>
> It would be good to be able to start converting the store  recovery tests  or at least be able to write new recovery tests in JUnit.   We could start by writing a simple recovery test just to establish the framework.  The test should.
> -  Connect, create a table, commit and shutdown the database.
> -  fork a jvm, add one row, commit, add another row, exit  the jvm.
> -  Reconnect with the first jvm and verify that the first row is there and the second is not.
> I guess the main thing to decide is how to spawn the second jvm and check results.    I tend to think the second jvm should actually execute another JUnit test, verify the exit code (assuming a failed test has a non-zero exit code) and then put the output in the fail assertion if it fails so it shows up in the report at the end of the Suite execution.   I think we could create a test runner that takes a class and a specific test to run instead of the whole suite, so we could keep our methods consolidated in a single class for the test, but all pure conjecture at this point.  I'll have to give it a try, but wanted to first see if folks thought this was a reasonable approach.
>  

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