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From "Dawid Weiss (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (LUCENE-4148) _TestUtil should be able to generate random longs
Date Mon, 18 Jun 2012 16:11:43 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13395992#comment-13395992
] 

Dawid Weiss edited comment on LUCENE-4148 at 6/18/12 4:10 PM:
--------------------------------------------------------------

This looks good to me, although I'm wondering how much randomness do we really need -- those
BigIntegers are worrying. I think this can be improved later if somebody wishes to dive into
it.

Btw. an interesting random number generator -- 
http://home.southernct.edu/~pasqualonia1/ca/report.html
                
      was (Author: dweiss):
    This looks good to me, although I'm wondering how much randomness do we really need --
those BigIntegers are worrying. I think this can be improved later if somebody wishes to dive
into it.

Btw. an interesting random number generator -- 
                  
> _TestUtil should be able to generate random longs
> -------------------------------------------------
>
>                 Key: LUCENE-4148
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4148
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: general/test
>            Reporter: Adrien Grand
>            Priority: Trivial
>         Attachments: LUCENE-4148.patch
>
>
> It would be helpful in TestPackedInts at least, in order to generate random values (as
a workaround, we currently generate a random int between 0 and {{min(Integer.MAX_VALUE, PackedInts.maxValue(bitsPerValue)}}).
Moreover, it would help to fix {{nextInt}} for large ranges (calling {{nextInt(random, -10,
Integer.MAX_VALUE)}} or even {{nextInt(random, 0, Integer.MAX_VALUE)}} currently fails because
the range of values is {{> Integer.MAX_VALUE}}.

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