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-rwxr-xr-xtests/misc/wc-files0-from.pl93
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diff --git a/tests/misc/wc-files0-from.pl b/tests/misc/wc-files0-from.pl
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+++ b/tests/misc/wc-files0-from.pl
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+#!/usr/bin/perl
+# Exercise wc's --files0-from option.
+# FIXME: keep this file in sync with tests/du/files0-from.
+
+# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+
+(my $program_name = $0) =~ s|.*/||;
+
+my $prog = 'wc';
+
+# Turn off localization of executable's output.
+@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
+
+my @Tests =
+ (
+ # invalid extra command line argument
+ ['f-extra-arg', '--files0-from=- no-such', {IN=>"a"}, {EXIT=>1},
+ {ERR => "$prog: extra operand 'no-such'\n"
+ . "file operands cannot be combined with --files0-from\n"
+ . "Try '$prog --help' for more information.\n"}
+ ],
+
+ # missing input file
+ ['missing', '--files0-from=missing', {EXIT=>1},
+ {ERR => "$prog: cannot open 'missing' for reading: "
+ . "No such file or directory\n"}],
+
+ # input file name of '-'
+ ['minus-in-stdin', '--files0-from=-', '<', {IN=>{f=>'-'}}, {EXIT=>1},
+ {ERR => "$prog: when reading file names from stdin, no file name of"
+ . " '-' allowed\n"}],
+
+ # empty input, regular file
+ ['empty', '--files0-from=@AUX@', {AUX=>''}],
+
+ # empty input, from non-regular file
+ ['empty-nonreg', '--files0-from=/dev/null'],
+
+ # one NUL
+ ['nul-1', '--files0-from=-', '<', {IN=>"\0"}, {EXIT=>1},
+ {ERR => "$prog: -:1: invalid zero-length file name\n"}],
+
+ # two NULs
+ ['nul-2', '--files0-from=-', '<', {IN=>"\0\0"}, {EXIT=>1},
+ {OUT=>"0 0 0 total\n"},
+ {ERR => "$prog: -:1: invalid zero-length file name\n"
+ . "$prog: -:2: invalid zero-length file name\n"}],
+
+ # one file name, no NUL
+ ['1', '--files0-from=-', '<',
+ {IN=>{f=>"g"}}, {AUX=>{g=>''}}, {OUT=>"0 0 0 g\n"} ],
+
+ # one file name, with NUL
+ ['1a', '--files0-from=-', '<',
+ {IN=>{f=>"g\0"}}, {AUX=>{g=>''}}, {OUT=>"0 0 0 g\n"} ],
+
+ # two file names, no final NUL
+ ['2', '--files0-from=-', '<',
+ {IN=>{f=>"g\0g"}}, {AUX=>{g=>''}},
+ {OUT=>"0 0 0 g\n0 0 0 g\n0 0 0 total\n"} ],
+
+ # two file names, with final NUL
+ ['2a', '--files0-from=-', '<',
+ {IN=>{f=>"g\0g\0"}}, {AUX=>{g=>''}},
+ {OUT=>"0 0 0 g\n0 0 0 g\n0 0 0 total\n"} ],
+
+ # Ensure that $prog processes FILEs following a zero-length name.
+ ['zero-len', '--files0-from=-', '<',
+ {IN=>{f=>"\0g\0"}}, {AUX=>{g=>''}},
+ {OUT=>"0 0 0 g\n0 0 0 total\n"},
+ {ERR => "$prog: -:1: invalid zero-length file name\n"}, {EXIT=>1} ],
+ );
+
+my $save_temps = $ENV{DEBUG};
+my $verbose = $ENV{VERBOSE};
+
+my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
+exit $fail;