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https://issues.apache.org/jira/browse/LUCENE-3990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254583#comment-13254583
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Uwe Schindler edited comment on LUCENE-3990 at 4/16/12 8:41 AM:
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We should have a asserting method for CharFilter consistency. Indeed the
read(char[],int,int) method in MappingCharFilter is failing horribly (which is
caused by the underlying MockCharFilter somehow).
I propose to adda CharFilter consistency method that reads two instances of the
same CharFilter, one using read() and in parallel using read(char[]) with
varying buffer sizes. It should check offsets (and that is what is heavy buggy
in MappingCharOffsetCorrumpter / MockCharCorrumpter).
I'll prepare a patch with the test method in BaseTokenStreamTestCase.
was (Author: thetaphi):
We should have a asserting method for CharFilter consistency. Indeed the
read(char[],int,int) method in MappingCharFilter is failing horribly.
I propose to adda CharFilter consistency method that reads two instances of the
same CharFilter, one using read() and in parallel using read(char[]) with
varying buffer sizes. It should check offsets (and that is what is heavy buggy
in MappingCharOffsetCorrumpter).
I'll prepare a patch with the test method in BaseTokenStreamTestCase.
> TestRandomChains failure caused by incorrect delegation in
> CharReader/CharFilter/CharStream API
> -----------------------------------------------------------------------------------------------
>
> Key: LUCENE-3990
> URL: https://issues.apache.org/jira/browse/LUCENE-3990
> Project: Lucene - Java
> Issue Type: Bug
> Components: modules/analysis
> Reporter: Steven Rowe
> Assignee: Uwe Schindler
> Fix For: 4.0
>
> Attachments: LUCENE-3990-CharFilterFix.patch, LUCENE-3990.patch,
> analysis-common.tests-report.txt
>
>
> 100% reproduces for me:
> 2> NOTE: reproduce with: ant test -Dtests.class=*.TestRandomChains
> -Dtests.method=testRandomChains -Dtests.seed=88CA02C2BB7B1DA
> -Dargs="-Dfile.encoding=UTF-8"
> Running org.apache.lucene.analysis.core.TestRandomChains
> FAILURE 7.22s | TestRandomChains.testRandomChains
> > Throwable #1: java.lang.AssertionError: endOffset 1 expected:<7> but
> was:<8>
> > at
> __randomizedtesting.SeedInfo.seed([88CA02C2BB7B1DA:356D894D6CA5AC1A]:0)
> > at org.junit.Assert.fail(Assert.java:93)
> > at org.junit.Assert.failNotEquals(Assert.java:647)
> > at org.junit.Assert.assertEquals(Assert.java:128)
> > at org.junit.Assert.assertEquals(Assert.java:472)
> > at
> org.apache.lucene.analysis.BaseTokenStreamTestCase.assertTokenStreamContents(BaseTokenStreamTestCase.java:165)
> > at
> org.apache.lucene.analysis.BaseTokenStreamTestCase.checkAnalysisConsistency(BaseTokenStreamTestCase.java:662)
> > at
> org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:486)
> > at
> org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:429)
> > at
> org.apache.lucene.analysis.core.TestRandomChains.testRandomChains(TestRandomChains.java:820)
> The root cause of this is inconsequent override of several Reader methods in
> subclasses of CharFilter. We should fix this urgently, thanks to the random
> chains we found this bug.
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