[hibernate-dev] Tests asserting warnings get logged

Emmanuel Bernard emmanuel at hibernate.org
Fri Mar 28 14:40:16 EDT 2014

XWiki solved that with a JUnit rule and an in-memory log appender. I beleive their test adds the log appender programmatically during the tests.


On 28 Mar 2014, at 13:03, Sanne Grinovero <sanne at hibernate.org> wrote:

> I had the same thoughts recently!
> My idea would be to have a Logger implementation which logs into an
> in-memory buffer, which you can lookup somehow. For my own test needs,
> even a static accessor would do. It could be a simple text
> representation, or it could store a smarter event-list with some
> assertion helper methods. A reset() method to be invoked at the end of
> each test (or between tests as needed).
> I'd then remove Log4J from our test dependencies to primarily rely on
> assertions only; or for debugging purposes to have it forwards
> messages to System.out too - probably enabled by some environment
> option - would be good enough.
> On 28 March 2014 11:47, Steve Ebersole <steve at hibernate.org> wrote:
>> I again have in mind adding some test assertions that a particular logging
>> (WARN) message gets triggered.  We have already one such test in place,
>> which is one of the places where our usage of byteman comes in.
>> Given the problems using byteman is causing in CI and the fact that our
>> reliance on it is pretty light at the moment, I wanted to reach out for
>> some other ideas/proposals for ways to handle this testing requirement.  I
>> will also reach out to David and James to see if this is something JBoss
>> Logging itself could help us tackle; maybe there is some feature there
>> already that would help.  Any other ideas/proposals?
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