1 files changed, 84 insertions, 0 deletions
diff --git a/tests/misc/sort-merge.pl b/tests/misc/sort-merge.pl
new file mode 100755
index 0000000..23f6ed2
--- /dev/null
+++ b/tests/misc/sort-merge.pl
@@ -0,0 +1,84 @@
+#!/usr/bin/perl
+# Test "sort -m".
+
+# Copyright (C) 2002-2016 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 <http://www.gnu.org/licenses/>.
+
+use strict;
+
+my $limits = getlimits ();
+
+(my $program_name = $0) =~ s|.*/||;
+my $prog = 'sort';
+
+# Turn off localization of executable's output.
+@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
+
+# three empty files and one that says 'foo'
+my @inputs = (+(map{{IN=> {"empty$_"=> ''}}}1..3), {IN=> {foo=> "foo\n"}});
+
+my $big_input = "aaa\n" x 1024;
+
+# don't need to check for existence, since we're running in a temp dir
+my $badtmp = 'does/not/exist';
+
+my $bigint = $limits->{UINTMAX_OFLOW};
+
+my @Tests =
+    (
+     ['m1', '-m', @inputs, {OUT=>"foo\n"}],
+
+     # check validation of --batch-size option
+     ['nmerge-0', "-m --batch-size=0", @inputs,
+        {ERR=>"$prog: invalid --batch-size argument '0'\n".
+              "$prog: minimum --batch-size argument is '2'\n"}, {EXIT=>2}],
+
+     ['nmerge-1', "-m --batch-size=1", @inputs,
+        {ERR=>"$prog: invalid --batch-size argument '1'\n".
+              "$prog: minimum --batch-size argument is '2'\n"}, {EXIT=>2}],
+
+     ['nmerge-neg', "-m --batch-size=-1", @inputs,
+        {ERR=>"$prog: invalid --batch-size argument '-1'\n"}, {EXIT=>2}],
+
+     ['nmerge-nan', "-m --batch-size=a", @inputs,
+        {ERR=>"$prog: invalid --batch-size argument 'a'\n"}, {EXIT=>2}],
+
+     ['nmerge-big', "-m --batch-size=$bigint", @inputs,
+        {ERR_SUBST=>'s/(current rlimit is) \d+/$1/'},
+        {ERR=>"$prog: --batch-size argument '$bigint' too large\n".
+              "$prog: maximum --batch-size argument with current rlimit is\n"},
+        {EXIT=>2}],
+
+     # This should work since nmerge >= the number of input files
+     ['nmerge-yes', "-m --batch-size=4 -T$badtmp", @inputs, {OUT=>"foo\n"}],
+
+     # this should fail since nmerge < # of input files, so
+     # temp files are needed
+     ['nmerge-no', "-m --batch-size=2 -T$badtmp", @inputs,
+        {ERR_SUBST=>"s|': .*|':|"},
+        {ERR=>"$prog: cannot create temporary file in '$badtmp':\n"},
+        {EXIT=>2}],
+
+     # This used to fail because setting batch-size without also setting
+     # buffer size would cause the buffer size to be set to the minimum.
+     ['batch-size', "--batch-size=16 -T$badtmp", {IN=> {big=> $big_input}},
+        {OUT=>$big_input}],
+    );
+
+my $save_temps = $ENV{DEBUG};
+my $verbose = $ENV{VERBOSE};
+
+my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
+exit $fail;