GNU bug report logs - #26709
Tests failing.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Григорий Резников
 <grikukan <at> mail.ru>
Subject: bug#26709: closed (Re: bug#26709: Tests failing.)
Date: Sun, 30 Apr 2017 04:00:03 +0000

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Your bug report

#26709: Tests failing.

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 26709 <at> debbugs.gnu.org.

-- 
26709: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26709
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Pádraig Brady <P <at> draigBrady.com>
To: Григорий Резников
 <grikukan <at> mail.ru>, 26709-done <at> debbugs.gnu.org
Subject: Re: bug#26709: Tests failing.
Date: Sat, 29 Apr 2017 20:59:24 -0700

On 29/04/17 01:37, Григорий Резников wrote:
> 
> I've tried to improve tests coverage, so I've built and ran tests using following commands:
> 
> ./configure CFLAGS="-g -fprofile-arcs -ftest-coverage"
> make -j8
> sudo make check -j8
> 
> After that I got FAIL on tests/mv/sticky-to-xpart and tests/rm/fail-2eperm.

Note there was a recently exposed race due to the extra steps to write the coverage files.
http://git.sv.gnu.org/gitweb/?p=coreutils.git;a=commitdiff;h=v8.26-36-gc95c0a0
But your case is a permissions issue as the two root tests in question operate
as the "nobody" user by default, and thus can't rewrite the coverage files.

Note I can reproduce with `make coverage` (which uses these settings):
https://github.com/coreutils/gnulib/blob/94386a13/top/maint.mk#L1483-L1508

To avoid the issue you can use the NON_ROOT_USERNAME setting as described at:
https://github.com/coreutils/coreutils/blob/7ea15a57/README#L116-L136

So a recipe to generate coverage is:

  $ make -j8 coverage
    Overall coverage rate:
      lines......: 81.4% (43883 of 53881 lines)
      functions..: 89.5% (2335 of 2608 functions)
  $ sudo make -j8 build-coverage NON_ROOT_USERNAME=$USER SUBDIRS=.
  $ make gen-coverage
    Overall coverage rate:
      lines......: 82.5% (44476 of 53881 lines)
      functions..: 90.9% (2370 of 2608 functions)

You can view the html report with:
  xdg-open doc/coverage/index.html

I've updated the HACKING instructions as above and pushed.

cheers,
Pádraig.

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From: Григорий Резников
 <grikukan <at> mail.ru>
To: Bug-coreutils <at> gnu.org
Subject: Tests failing.
Date: Sat, 29 Apr 2017 11:37:27 +0300

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I've tried to improve tests coverage, so I've built and ran tests using following commands:

./configure CFLAGS="-g -fprofile-arcs -ftest-coverage"
make -j8
sudo make check -j8

After that I got FAIL on tests/mv/sticky-to-xpart and tests/rm/fail-2eperm.

Best regards,
Grigory Reznikov.

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