in reply to help installing Devel::NYTProf under Cygwin

G'day Special_K,

I tried the installation myself and got the same result. I edited my CPAN Tester Report as follows: 

------------------------------
TESTER COMMENTS
------------------------------

Additional comments from tester:

I'm following up a question on PerlMonks:
"help installing Devel::NYTProf under Cygwin"
(https://www.perlmonks.org/?node_id=11135967).

The error I have below is identical to the one posted on PerlMonks.

The "CPAN Testers Matrix: Devel-NYTProf 6.10 (latest distribution)"
(http://matrix.cpantesters.org/?dist=Devel-NYTProf+6.10)
only has one report for Cygwin
(https://www.cpantesters.org/cpan/report/a4dfd892-7306-1014-8def-c9dd7
+5d8a230)
which is an identical FAIL.

I see from https://github.com/timbunce/devel-nytprof/blob/master/t/50-
+errno.t
that the problem line is in a SKIP block:
    skip ... if($^O eq 'VMS');
Unless that test is essential for Cygwin, perhaps consider:
    skip ... if($^O eq 'VMS' or $^O eq 'cygwin');

[download]

The CPAN Testers Matrix typically takes a while to update: my report may not appear for some time (which is why I posted it here). I hope there's sufficient information for you to see what's going on; ask if that's not the case.

Given you got very close to success: 

Failed 1/55 test programs. 1/4949 subtests failed.

[download]

I'd recommend you take the force option.

Update: Force worked for me. 

cpan[2]> force install Devel::NYTProf
...
  JKEENAN/Devel-NYTProf-6.10.tar.gz
  /usr/bin/make install  -- OK

[download]

— Ken

Replies are listed 'Best First'.
Re^2: help installing Devel::NYTProf under Cygwin
by Special_K (Pilgrim) on Aug 20, 2021 at 17:08 UTC

    > I hope there's sufficient information for you to see what's going on; ask if that's not the case.

    The section of code that is failing is: 
    SKIP: {
    skip 'On VMS buffer is not flushed', 1 if ($^O eq 'VMS'); 
    cmp_ok $size1, '>', 0, "$nytprof_out should not be empty";
}

    [download]

    Is SKIP just an arbitrary label?
    What does 'skip' do?
    How do I know if this test is safe to skip for Cygwin?

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      "The section of code that is failing is ..."

      That statement is completely wrong.

      Your own OP has: 

      #   Failed test '$! should not be altered by NYTProf i/o'
#   at t/50-errno.t line 58.

      [download]

      The URL I provided (https://github.com/timbunce/devel-nytprof/blob/master/t/50-errno.t) links to code with line numbers. The SKIP block starting at line 50, and ending on line 59, contains "t/50-errno.t line 58".

      "Is SKIP just an arbitrary label?"

      No, it's not. Probably the most frequently used test module is the core Test::More (wherein you'll find SKIP). If you're going to investigate "*.t" files, you should be familiar with this module; although, be aware that there are many other modules in the Test:: namespace. I'm a strong advocate of testing and would recommend that you read up on Test::More anyway.

      "How do I know if this test is safe to skip for Cygwin?"

      The short answer is: "you don't". A longer answer would, to some extent, depend on your definition of "safe". It's a developer's tool so your clients will be unaffected. If you are genuinely concerned, don't use this module.

      — Ken

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