I have a test file with Test::NoWarnings. The module getting tested relies on other module that use XS. One of those modules throws a warning that it's "falling back to PP version". This warning causes my test to fail. I tried the following to fix the issue: 

use strict;
use warnings;
use File::Path;
use Data::Dumper qw(Dumper);
use Test::NoWarnings;
use Test::Output;
use Test::Most tests => 16, 'die';

BEGIN {
  $ENV{'DANCER_ENVIRONMENT'} = 'testing';

  $SIG{__WARN__} = sub {
    my $warn = shift;
    return if $warn =~ /fallback to PP version/;
    warn $warn;
  };
}

[download]

While this does suppress the warning, it also suppresses all warnings that my test might produce making Test::NoWarnings useless. As a workaround, I just comment out the $SIG{__WARN__} stuff while I'm testing but I'd like to learn how to properly address this issue. I tried moving it outside the BEGIN block but that didn't help. Thanks!

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In reply to What is the proper way to suppress a warning in a test file? by nysus

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