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Id: 91854
Status: new
Priority: 0/
Queue: File-Find-Iterator

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Owner: Nobody in particular
Requestors: KENTNL [...] cpan.org
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Bug Information
Severity: (no value)
Broken in: 0.4
Fixed in: (no value)



Subject: random failure under HARNESS_OPTIONS=j2

This failure occurs roughly one in 100 times when you're running as simply:

> for i in $(seq 0 100); do prove -j100 -lvr t/*; done

However, I was having it fail _every time_ when trying to install/test via cpanm.

My suspicion is that 02 creates the statefile between the 2 passes of 01's traversal, invalidating the test result, or something like that. Its quirky.
 

The only thing I can see for sure, is that by customising t/02.t to point the statefile into /tmp/ instead of inside . , then it seems impossible to make the tests fail.
 

PERL_DL_NONLAZY=1 /home/kent/perl5/perlbrew/perls/perl-5.19.6/bin/perl5.19.6 "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
===(       2;0  1/7  1/2 )==============================================
#   Failed test at t/01.t line 24.
# Looks like you failed 1 test of 7.
t/01.t .. Dubious, test returned 1 (wstat 256, 0x100)                   
Failed 1/7 subtests
t/02.t .. ok   

Test Summary Report
-------------------
t/01.t (Wstat: 256 Tests: 7 Failed: 1)
  Failed test:  3
  Non-zero exit status: 1
Files=2, Tests=9,  0 wallclock secs ( 0.03 usr  0.00 sys +  0.09 cusr  0.02 csys =  0.14 CPU)
Result: FAIL
Failed 1/2 test programs. 1/9 subtests failed.
 

 

I changed the 3rd test in 01.t to read

 

if( not ok @res == @res2 ) {
    diag explain {
        res => \@res,
        res2 => \@res2,
    };
}

 

And indeed, it shows the difference is the "statefile" produced by 02.t

 



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