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https://issues.apache.org/jira/browse/LUCENE-4463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13470746#comment-13470746
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Hoss Man commented on LUCENE-4463:
----------------------------------
bq. I'll take the (hard to reproduce seed) from
http://sierranevada.servebeer.com/job/lucene40-beaster/1327/consoleText, and
add -Dtests.iters=100 to it:
you said "because it does not allow -Dtestmethod" i said "-Dtests.iters
definitely works with -Dtestmethod." ... the reproduce line noted in the url
you mentioned doesn't use "-Dtestmethod" -- it uses "-Dtests.method" which is
why you get the helpful error that you need to add a "*" to that in order to
use tests.iters (which is also what it said in the test-help output i pasted)
if you can settle for reusing the same JVM, tests.iters combined with
testmethod (or tests.method=...*) will give you different _test_ seeds
everytime -- only the global seed will be the same
{noformat}
hossman@frisbee:~/lucene/dev/lucene/core$ ant test -Dtestcase=TestDemo
-Dtestmethod=testDemo -Dtests.iters=100
...
test:
[mkdir] Created dir: /home/hossman/lucene/dev/lucene/build/core/test
[junit4:junit4] <JUnit4> says ¡Hola! Master seed: 22F7073C01E2726A
[junit4:junit4] Executing 1 suite with 1 JVM.
[junit4:junit4]
[junit4:junit4] Suite: org.apache.lucene.TestDemo
[junit4:junit4] OK 0.26s | TestDemo.testDemo {#0
seed=[22F7073C01E2726A:5D5BBB89303F587A]}
[junit4:junit4] OK 0.02s | TestDemo.testDemo {#1
seed=[22F7073C01E2726A:E90D077504FD9356]}
[junit4:junit4] OK 0.02s | TestDemo.testDemo {#2
seed=[22F7073C01E2726A:67E491A95539DB9D]}
[junit4:junit4] OK 0.02s | TestDemo.testDemo {#3
seed=[22F7073C01E2726A:560A3A4C39C780B4]}
...
[junit4:junit4] OK 0.01s | TestDemo.testDemo {#97
seed=[22F7073C01E2726A:350464D9D520F10D]}
[junit4:junit4] OK 0.06s | TestDemo.testDemo {#98
seed=[22F7073C01E2726A:F13956B54576EE0E]}
[junit4:junit4] OK 0.01s | TestDemo.testDemo {#99
seed=[22F7073C01E2726A:3BAD13CC4232331D]}
[junit4:junit4] Completed in 3.28s, 100 tests
[junit4:junit4]
[junit4:junit4] JVM J0: 0.49 .. 4.34 = 3.85s
[junit4:junit4] Execution time total: 4.34 sec.
[junit4:junit4] Tests summary: 1 suite, 100 tests
{noformat}
> add support for running the same test method many times
> -------------------------------------------------------
>
> Key: LUCENE-4463
> URL: https://issues.apache.org/jira/browse/LUCENE-4463
> Project: Lucene - Core
> Issue Type: Wish
> Components: general/build
> Reporter: Robert Muir
> Attachments: LUCENE-4463.patch
>
>
> I have a shell script for this, mike has a python script, its annoying :)
> I want to do something like this:
> ant beast -Dtestcase=XXXX -Dtestmethod=YYYY -Diterations=100
> I would be happy with a simple loop that just invokes 'test' somehow: getting
> a fresh new JVM to each iteration is desirable anyway (so you get fresh
> codecs, etc).
> the -Dtests.iters is not really useful for this because it does not allow
> -Dtestmethod and it does not give a fresh jvm.
> bonus points if it can use multiple jvms at the same time though :)
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