1#!/usr/bin/perl
2# Test "sort -m".
3
4# Copyright (C) 2002-2023 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
21my $limits = getlimits ();
22
23(my $program_name = $0) =~ s|.*/||;
24my $prog = 'sort';
25
26# Turn off localization of executable's output.
27@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
28
29# three empty files and one that says 'foo'
30my @inputs = (+(map{{IN=> {"empty$_"=> ''}}}1..3), {IN=> {foo=> "foo\n"}});
31
32my $big_input = "aaa\n" x 1024;
33
34# don't need to check for existence, since we're running in a temp dir
35my $badtmp = 'does/not/exist';
36
37my $bigint = $limits->{UINTMAX_OFLOW};
38
39my @Tests =
40    (
41     ['m1', '-m', @inputs, {OUT=>"foo\n"}],
42
43     # check validation of --batch-size option
44     ['nmerge-0', "-m --batch-size=0", @inputs,
45        {ERR=>"$prog: invalid --batch-size argument '0'\n".
46              "$prog: minimum --batch-size argument is '2'\n"}, {EXIT=>2}],
47
48     ['nmerge-1', "-m --batch-size=1", @inputs,
49        {ERR=>"$prog: invalid --batch-size argument '1'\n".
50              "$prog: minimum --batch-size argument is '2'\n"}, {EXIT=>2}],
51
52     ['nmerge-neg', "-m --batch-size=-1", @inputs,
53        {ERR=>"$prog: invalid --batch-size argument '-1'\n"}, {EXIT=>2}],
54
55     ['nmerge-nan', "-m --batch-size=a", @inputs,
56        {ERR=>"$prog: invalid --batch-size argument 'a'\n"}, {EXIT=>2}],
57
58     ['nmerge-big', "-m --batch-size=$bigint", @inputs,
59        {ERR_SUBST=>'s/(current rlimit is) \d+/$1/'},
60        {ERR=>"$prog: --batch-size argument '$bigint' too large\n".
61              "$prog: maximum --batch-size argument with current rlimit is\n"},
62        {EXIT=>2}],
63
64     # This should work since nmerge >= the number of input files
65     ['nmerge-yes', "-m --batch-size=4 -T$badtmp", @inputs, {OUT=>"foo\n"}],
66
67     # this should fail since nmerge < # of input files, so
68     # temp files are needed
69     ['nmerge-no', "-m --batch-size=2 -T$badtmp", @inputs,
70        {ERR_SUBST=>"s|': .*|':|"},
71        {ERR=>"$prog: cannot create temporary file in '$badtmp':\n"},
72        {EXIT=>2}],
73
74     # This used to fail because setting batch-size without also setting
75     # buffer size would cause the buffer size to be set to the minimum.
76     ['batch-size', "--batch-size=16 -T$badtmp", {IN=> {big=> $big_input}},
77        {OUT=>$big_input}],
78    );
79
80my $save_temps = $ENV{DEBUG};
81my $verbose = $ENV{VERBOSE};
82
83my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
84exit $fail;
85