1#!/usr/bin/perl
2# Exercise fold.
3
4# Copyright (C) 2003-2023 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18
19use strict;
20
21(my $program_name = $0) =~ s|.*/||;
22
23# Turn off localization of executable's output.
24@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
25
26my @Tests =
27  (
28   ['s1', '-w2 -s', {IN=>"a\t"}, {OUT=>"a\n\t"}],
29   ['s2', '-w4 -s', {IN=>"abcdef d\n"}, {OUT=>"abcd\nef d\n"}],
30   ['s3', '-w4 -s', {IN=>"a cd fgh\n"}, {OUT=>"a \ncd \nfgh\n"}],
31   ['s4', '-w4 -s', {IN=>"abc ef\n"}, {OUT=>"abc \nef\n"}],
32  );
33
34my $save_temps = $ENV{DEBUG};
35my $verbose = $ENV{VERBOSE};
36
37my $prog = 'fold';
38my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
39exit $fail;
40