> There doesn't seem to be a simple, generic way to negate an arbitrary test in Test::More AFAICT.

I just realized that all tests return a boolean result.

So here a workaround:

use strict;
use warnings;
use Test::More;


sub fail_ok (&;@) {
    my ($code,$description) = @_;

    my $result;
  TODO:
    {
        local $TODO= "should be silent";
        my $result = $code->();
    }

    $result
      ? fail($description)
        : pass($description);
}

fail_ok { is(1,2,"") }
  "Bingo! Test failed";

done_testing;
[download]

The TODO block ensures that there is no failed test in the final result.

But I still need to understand how to make the output of the failed inner test silent ... °

... I probably need to redirect the STDERR output of Test::Builder or fiddle with TAP altogether

    
-*- mode: compilation; default-directory: "d:/exp/" -*-
Compilation started at Fri Jul 24 13:02:20

C:/Perl_524/bin\perl.exe -w d:/exp/pm_negate_test.pl 
not ok 1 -  # TODO should be silent
#   Failed (TODO) test ''
#   at d:/exp/pm_negate_test.pl line 21.
#          got: '1'
#     expected: '2'
ok 2 - Bingo! Test failed
1..2

Compilation finished at Fri Jul 24 13:02:21
[download]

°) Hmm... probably with subtests...