tap-filter

#!/usr/bin/env perl
# -------------------------------------------------------------------------------------------------
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# -------------------------------------------------------------------------------------------------
# vim: ft=perl sw=2 ts=2 et
# -------------------------------------------------------------------------------------------------

# This is a stdin-to-stdout filter that takes TAP output (such as 'make test')
# on stdin and deletes lines pertaining to expected results.
#
# More specifically, if any of the test points in a test file either failed but
# was expected to pass, or passed but was expected to fail, then emit that test
# file's output; else, elide that test file's output.

use v5.10.0;
use warnings;
use strict;

undef $/; # slurp mode
print for
  grep { /^ok.*# TODO/m or /^not ok(?!.*# TODO)/m or /^Bail out!/m }
    # Split on plan lines and remove them from the output.  (To keep them,
    # use the lookahead syntax, «(?=…)», to make the match zero-length.)
    split /^\d+\.\.\d+$/m,
      <STDIN>;