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From: Mahler Thomas <thomas.mahler@itellium.com>
To: "'OJB Developers List'" <ojb-dev@db.apache.org>
Subject: RE: non-deterministic test failures, was: RE: junit test failures
Date: Fri, 14 Nov 2003 13:51:11 +0100
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Hi Olli,

> 
> > If you try ant junit-quick, a fresh copy of the testdatabase is 
> > installed before executing junit-no-compile.
> 
> That is not quite true.  junit-quick delegates to (depends on) 
> junit-no-compile-no-prepare, not to junit-no-compile
> 

oops, you are right...

> junit-no-compile does delete the database:
> \ojb_work\db-ojb>bin\build.bat junit-no-compile
> Buildfile: build.xml
> [..]
> prepare-repository:
>    [delete] Deleting directory ...\ojb_work\db-ojb\target\test
> 
> The essential difference between junit-quick and junit-no-compile
> is that junit-quick does a copy-testdb, whereas junit-no-compile
> uses torque to re-assemble the testdb.
> 
> I have just run junit-quick several times and the problem 
> persists. 

Uh, oh...

> For example, the following odmg test fail non-deterministically:
> 
> Testcase: testLockNode took 0 sec
> 	FAILED
> expected:<7> but was:<5>
> [...]
> 
> Testcase: testAdding took 0 sec
> 	FAILED
> binded DList not found
> [...]
> 
> Testcase: testAddingTestcase: testRemoving took 0,047 sec
> 	FAILED
> database lookup does not find the named DList
> [...]
> 
> Apart from the non-desirable interdependency of the tests
> inside the test suite, we have here non-determinism of the 
> whole test suite.

that's not good :-(
We really have to get rid of this problem.

I'll add it to my todo list...

cu,
Thomas

> Trust me.
> Olli
> 
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