1#!/usr/bin/perl
2# Exercise du's --files0-from option.
3# FIXME: keep this file in sync with tests/misc/wc-files0-from.
4
5# Copyright (C) 2004-2023 Free Software Foundation, Inc.
6
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <https://www.gnu.org/licenses/>.
19
20use strict;
21
22(my $program_name = $0) =~ s|.*/||;
23
24my $prog = 'du';
25
26# Turn off localization of executable's output.
27@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
28
29my @Tests =
30  (
31   # invalid extra command line argument
32   ['f-extra-arg', '--files0-from=- no-such', {IN=>"a"}, {EXIT=>1},
33    {ERR => "$prog: extra operand 'no-such'\n"
34        . "file operands cannot be combined with --files0-from\n"
35        . "Try '$prog --help' for more information.\n"}
36    ],
37
38   # missing input file
39   ['missing', '--files0-from=missing', {EXIT=>1},
40    {ERR => "$prog: cannot open 'missing' for reading: "
41     . "No such file or directory\n"}],
42
43   # input file name of '-'
44   ['minus-in-stdin', '--files0-from=-', '<', {IN=>{f=>'-'}}, {EXIT=>1},
45    {ERR => "$prog: when reading file names from stdin, no file name of"
46     . " '-' allowed\n"}],
47
48   # empty input, regular file
49   ['empty', '--files0-from=@AUX@', {AUX=>''}],
50
51   # empty input, from non-regular file
52   ['empty-nonreg', '--files0-from=/dev/null'],
53
54   # one NUL
55   ['nul-1', '--files0-from=-', '<', {IN=>"\0"}, {EXIT=>1},
56    {ERR => "$prog: -:1: invalid zero-length file name\n"}],
57
58   # two NULs
59   ['nul-2', '--files0-from=-', '<', {IN=>"\0\0"}, {EXIT=>1},
60    {ERR => "$prog: -:1: invalid zero-length file name\n"
61          . "$prog: -:2: invalid zero-length file name\n"}],
62
63   # one file name, no NUL
64   ['1', '--files0-from=-', '<',
65    {IN=>{f=>"g"}}, {AUX=>{g=>''}},
66    {OUT=>"0\tg\n"}, {OUT_SUBST=>'s/^\d+/0/'} ],
67
68   # one file name, with NUL
69   ['1a', '--files0-from=-', '<',
70    {IN=>{f=>"g\0"}}, {AUX=>{g=>''}},
71    {OUT=>"0\tg\n"}, {OUT_SUBST=>'s/^\d+/0/'} ],
72
73   # two identical file names, no final NUL
74   ['2', '--files0-from=-', '<',
75    {IN=>{f=>"g\0g"}}, {AUX=>{g=>''}},
76    {OUT=>"0\tg\n"}, {OUT_SUBST=>'s/^\d+/0/'} ],
77
78   # two identical file names, with final NUL
79   ['2a', '--files0-from=-', '<',
80    {IN=>{f=>"g\0g\0"}}, {AUX=>{g=>''}},
81    {OUT=>"0\tg\n"}, {OUT_SUBST=>'s/^\d+/0/'} ],
82
83   # Ensure that $prog processes FILEs following a zero-length name.
84   ['zero-len', '--files0-from=-', '<',
85    {IN=>{f=>"\0g\0"}}, {AUX=>{g=>''}},
86    {OUT=>"0\tg\n"}, {OUT_SUBST=>'s/^\d+/0/'},
87    {ERR => "$prog: -:1: invalid zero-length file name\n"}, {EXIT=>1} ],
88  );
89
90my $save_temps = $ENV{DEBUG};
91my $verbose = $ENV{VERBOSE};
92
93my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
94exit $fail;
95