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Bug 223167 - Test: fo.getChildren() may not contain FO for broken symlinks
Summary: Test: fo.getChildren() may not contain FO for broken symlinks
Alias: None
Product: platform
Classification: Unclassified
Component: Filesystems (show other bugs)
Version: 7.3
Hardware: PC Linux
: P3 normal (vote)
Assignee: Jaroslav Tulach
Depends on:
Blocks: 222841
  Show dependency tree
Reported: 2012-12-03 11:50 UTC by Ondrej Vrabec
Modified: 2012-12-17 12:38 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Exception Reporter:

test (1.75 KB, patch)
2012-12-03 11:50 UTC, Ondrej Vrabec
Details | Diff
tests still failing (5.18 KB, patch)
2012-12-05 15:13 UTC, Ondrej Vrabec
Details | Diff

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Description Ondrej Vrabec 2012-12-03 11:50:47 UTC
Created attachment 128767 [details]

I have a problem implementing the logging of external hg commands (filed as bug #222841). Mercurial does not receive events about .hg/wlock file on Unix/Linux (possibly on Win too, i haven't checked). The file is created by certain hg commands and is a *broken symlink* pointing to non-existent file. IDE filesystem correctly recognizes such a was created but does not propagate the event to ProvidedExtensions... IMHO the problem is returns false for such a file and FileObjectFactory.issueIfExists -> touchExists uses the return value of this method. Please see the attached test (to be applied on masterfs)
Comment 1 Ondrej Vrabec 2012-12-03 11:51:38 UTC
currently a blocker of #222841 but if you tell me it cannot be fixed i will try to workaround it.
Comment 2 Jaroslav Tulach 2012-12-05 10:53:14 UTC
There seems to be a workaround that you can use:

On JDK7 I could: use Files.isSymbolicLink, but I am not sure how to make the code work also on JDK6.
Comment 3 Ondrej Vrabec 2012-12-05 13:33:07 UTC
sorry jardo, my fault, i gave this a wrong description. My point was different: my problem is that ProvidedExtensions does not receive events about such files - because FileObject cannot be created for these files in
I'll try harder and write a different more descriptive test.
Comment 4 Ondrej Vrabec 2012-12-05 15:13:03 UTC
Created attachment 128902 [details]
tests still failing
Comment 5 Ondrej Vrabec 2012-12-05 15:23:17 UTC
i modified the tests to demonstrate my point
please see the attachment:
1) FileObjTest - true, first time it passes but once you delete the broken link, refresh and create it again, it does not seem to return FileObject for it again
2) ProvidedExtensionsTest.testCreatedDeleteBrokenLinkExternally - fist sequence of create/delete delivers the events fine, but the following sequence of create/delete of the same broken link fails
Comment 6 Jaroslav Tulach 2012-12-06 07:15:56 UTC
FileObject can be created, if you ask parent for getChildren(). Take a look at my test.
Comment 7 Quality Engineering 2012-12-12 02:44:11 UTC
Integrated into 'main-golden', will be available in build *201212120001* on (upload may still be in progress)
User: Jaroslav Tulach <>
Log: #223167: Demonstrating that getParent().getChildren() works and makes the broken symlink available
Comment 8 Jaroslav Tulach 2012-12-14 10:40:16 UTC
Comment 9 Quality Engineering 2012-12-17 12:38:24 UTC
Integrated into 'main-golden', will be available in build *201212170919* on (upload may still be in progress)
User: Jaroslav Tulach <>
Log: #223167: Test: FileUtil.toFileObject() returns null for broken symlinks
#223167: Indicating the issueIfExists that the file has been noticed during listFiles() and thus it exists whatever its exist() state says