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|
#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
BEGIN {
if ($^O eq 'riscos') {
skip_all("kill() not implemented on this platform");
}
}
use strict;
plan tests => 6;
ok( kill(0, $$), 'kill(0, $pid) returns true if $pid exists' );
# It's not easy to come up with an individual PID that is known not to exist,
# so just check that at least some PIDs in a large range are reported not to
# exist.
my $count = 0;
my $total = 30_000;
for my $pid (1 .. $total) {
++$count if kill(0, $pid);
}
# It is highly unlikely that all of the above PIDs are genuinely in use,
# so $count should be less than $total.
ok( $count < $total, 'kill(0, $pid) returns false if $pid does not exist' );
# Verify that trying to kill a non-numeric PID is fatal
my @bad_pids = (
[ undef , 'undef' ],
[ '' , 'empty string' ],
[ 'abcd', 'alphabetic' ],
);
for my $case ( @bad_pids ) {
my ($pid, $name) = @$case;
eval { kill 0, $pid };
like( $@, qr/^Can't kill a non-numeric process ID/, "dies killing $name pid");
}
# Verify that killing a magic variable containing a number doesn't
# trigger the above
{
my $x = $$ . " ";
$x =~ /(\d+)/;
ok(eval { kill 0, $1 }, "can kill a number string in a magic variable");
}
|
