# $Id: harness,v 1.3 2004/09/23 08:38:06 leo Exp $

=head1 NAME

languages/m4/t/harness - A harness for Parrot m4

=head1 SYNOPSIS

  cd languages && perl -I../lib m4/t/harness -files

  cd languages && perl -I../lib m4/t/harness 

  cd languages && perl -I../lib m4/t/harness \
                   m4/t/basic/006_define_with_rest \
                   m4/t/regex/003_two_compiles.t

=head1 DESCRIPTION

Conformant to a recent post on p6i, if I'm called with a single
argument of "-files", I just return a list of files to process.
This list is one per line, and is relative to the languages dir.

If I'm called with no args, I run all tests.

Otherwise I try to run the list of passed tests.

=cut

# pragmata
use strict;

use Test::Harness();
use File::Spec;

my $language = 'm4';

if ( grep { m/^-files$/ } @ARGV ) 
{
  # Only the Makefile in 'parrot/languages' uses -file
  my $dir = File::Spec->catfile( $language, 't' );
  my @files = glob( File::Spec->catfile( $dir, '*/*.t' ) );
  print join( "\n", @files );
  print "\n" if scalar(@files);
}
else
{ 
  my @files;
  if ( scalar(@ARGV) ) 
  {
    # Someone specified tests for me to run.
    @files = grep { -f $_ } @ARGV
  }
  else
  {
    # Propably called out of 'parrot/languages'
    @files = glob( "m4/t/*/*.t" );
  }
  Test::Harness::runtests( @files ) if scalar(@files);
}

=head1 HISTORY

Mostly taken from tcl/t/harness.

=head1 SEE ALSO

  L<languages/tcl/t/harness>, L<languages/python/t/harness>

=head1 AUTHOR

  Bernhard.Schmalhofer@gmx.de

=cut