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https://issues.apache.org/jira/browse/CONFIGURATION-507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13461450#comment-13461450
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Oliver Heger commented on CONFIGURATION-507:
--------------------------------------------

Oops, I did not expect such problems.

Could it be the case that in the tests that fail the toString() method of a 
Configuration object is invoked, e.g. as part of an exception error message or 
something like that? Now the method does more than expected, and some tests may 
need a specific setup for an invocation of getKeys().

For instance, the test failure you listed seems to stem from a test for 
JNDIConfiguration (at least I assume because of _mockNamingEnumeration_). This 
test class uses mock objects for the JNDI context. If in one of these test 
cases toString() is called, unexpected methods on mock objects will be invoked.
                
> Add toString() method in AbstractConfiguration
> ----------------------------------------------
>
>                 Key: CONFIGURATION-507
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-507
>             Project: Commons Configuration
>          Issue Type: Wish
>            Reporter: Ludwig Magnusson
>            Priority: Minor
>
> Would it be possible to add a toString() method in AbstractConfiguration that 
> prints the mappings of the configuration for debugging purposes?
> Is there a reason why this has not been done?
> I am willing to supply a patch if this is greenlit.

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