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#!/usr/bin/perl
# Test whether programs exit upon a single EOF from a tty.
# Ensure that e.g., cat exits upon a single EOF (^D) from a tty.
# Do the same for all programs that can read stdin,
# require no arguments and that write to standard output.
# Copyright (C) 2003-2022 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 $ME = $0) =~ s|.*/||;
# Some older versions of Expect.pm (e.g. 1.07) lack the log_user method,
# so check for that, too.
eval { require Expect; Expect->require_version('1.11') };
$@
and CuSkip::skip "$ME: this script requires Perl's Expect package >=1.11\n";
{
my $fail = 0;
my @stdin_reading_commands = qw(
b2sum
base32
base64
cat
cksum
dd
expand
fmt
fold
head
md5sum
nl
od
paste
pr
ptx
sha1sum
sha224sum
sha256sum
sha384sum
sha512sum
shuf
sort
sum
tac
tail
tee
tsort
unexpand
uniq
wc
);
my $stderr = 'tty-eof.err';
foreach my $cmd ((@stdin_reading_commands), 'basenc --z85', 'cut -f2',
'numfmt --invalid=ignore')
{
my $exp = new Expect;
$exp->log_user(0);
$ENV{built_programs} =~ /\b$cmd\b/ || next;
$exp->spawn("$cmd 2> $stderr")
or (warn "$ME: cannot run '$cmd': $!\n"), $fail=1, next;
# No input for cut -f2.
$cmd =~ /^cut/
or $exp->send("a b\n");
$exp->send("\cD"); # This is Control-D. FIXME: what if that's not EOF?
$exp->expect (0, '-re', "^a b\\r?\$");
my $found = $exp->expect (1, '-re', "^.+\$");
$found and warn "F: $found: " . $exp->exp_match () . "\n";
$exp->expect(10, 'eof');
# Expect no output from cut, since we gave it no input.
defined $found || $cmd =~ /^cut/
or (warn "$ME: $cmd didn't produce expected output\n"),
$fail=1, next;
defined $exp->exitstatus
or (warn "$ME: $cmd didn't exit after ^D from standard input\n"),
$fail=1, next;
my $s = $exp->exitstatus;
$s == 0
or (warn "$ME: $cmd exited with status $s (expected 0)\n"),
$fail=1;
$exp->hard_close();
# dd normally writes to stderr. If it exits successfully, we're done.
$cmd eq 'dd' && $s == 0
and next;
if (-s $stderr)
{
warn "$ME: $cmd wrote to stderr:\n";
system "cat $stderr";
$fail = 1;
}
}
continue
{
unlink $stderr
or warn "$ME: failed to remove stderr file from $cmd, $stderr: $!\n";
}
exit $fail
}
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