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#!./perl
# test added 29th April 1999 by Paul Johnson (pjcj@transeda.com)
# updated 28th May 1999 by Paul Johnson
my $File;
BEGIN {
$File = __FILE__;
require strict; import strict;
}
use Test;
BEGIN { plan tests => 12 }
use IO::File;
sub lineno
{
my ($f) = @_;
my $l;
$l .= "$. ";
$l .= $f->input_line_number;
$l .= " $."; # check $. before and after input_line_number
$l;
}
my $t;
open (F, $File) or die $!;
my $io = IO::File->new($File) or die $!;
<F> for (1 .. 10);
ok(lineno($io), "10 0 10");
$io->getline for (1 .. 5);
ok(lineno($io), "5 5 5");
<F>;
ok(lineno($io), "11 5 11");
$io->getline;
ok(lineno($io), "6 6 6");
$t = tell F; # tell F; provokes a warning
ok(lineno($io), "11 6 11");
<F>;
ok(lineno($io), "12 6 12");
select F;
ok(lineno($io), "12 6 12");
<F> for (1 .. 10);
ok(lineno($io), "22 6 22");
$io->getline for (1 .. 5);
ok(lineno($io), "11 11 11");
$t = tell F;
# We used to have problems here before local $. worked.
# input_line_number() used to use select and tell. When we did the
# same, that mechanism broke. It should work now.
ok(lineno($io), "22 11 22");
{
local $.;
$io->getline for (1 .. 5);
ok(lineno($io), "16 16 16");
}
ok(lineno($io), "22 16 22");
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