#!/bin/sh
# -*- perl -*-

: ${PERL=perl}
: ${srcdir=.}

case "$PERL" in
  *'missing perl')
  echo 1>&2 "$0: configure didn't find a usable version of Perl, so can't run this test"
  exit 77
  ;;
esac
#'

exec $PERL -w -I$srcdir/.. -MFetish -- - <<\EOF
#/
require 5.003;
use strict;

(my $program_name = $0) =~ s|.*/||;

# Turn off localisation of executable's ouput.
@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;

my @Tests =
  (
   ['cycle-1', {IN => {f => "t b\nt s\ns t\n"}}, {OUT => "s\nt\nb\n"},
    {EXIT => 1},
    {ERR => "tsort: f: input contains a loop:\ntsort: s\ntsort: t\n"} ],
   ['cycle-2', {IN => {f => "t x\nt s\ns t\n"}}, {OUT => "s\nt\nx\n"},
    {EXIT => 1},
    {ERR => "tsort: f: input contains a loop:\ntsort: s\ntsort: t\n"} ],

   ['posix-1', {IN => "a b c c d e\ng g\nf g e f\nh h\n"},
    {OUT => "a\nc\nd\nh\nb\ne\nf\ng\n"}],
   ['posix-2', {IN => "b a\nd c\nz h x h r h\n"},
    {OUT => "b\nd\nr\nx\nz\na\nc\nh\n"}],

   ['linear-1', {IN => "a b b c c d d e e f f g\n"},
    {OUT => "a\nb\nc\nd\ne\nf\ng\n"}],

   ['tree-1', {IN => "a b b c c d d e e f f g\nc x x y y z\n"},
    {OUT => "a\nb\nc\nx\nd\ny\ne\nz\nf\ng\n"}],
   ['tree-2', {IN => "a b b c c d d e e f f g\nc x x y y z\nf r r s s t\n"},
    {OUT => "a\nb\nc\nx\nd\ny\ne\nz\nf\nr\ng\ns\nt\n"}],
  );

my $save_temps = $ENV{DEBUG};
my $verbose = $ENV{VERBOSE};

my $prog = $ENV{PROG} || die "$0: \$PROG not specified in environment\n";
my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
EOF