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#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require Config; Config->import;
if ($Config{'extensions'} !~ /\bIO\b/ && $^O ne 'VMS') {
print "1..0\n";
exit 0;
}
}
use strict;
use FileHandle;
autoflush STDOUT 1;
use Test::More;
my $TB = Test::More->builder;
my $mystdout = new_from_fd FileHandle 1,"w";
$| = 1;
autoflush $mystdout;
print $mystdout "ok ".fileno($mystdout),
" - ", "create new handle from file descriptor", "\n";
$TB->current_test($TB->current_test + 1);
my $fh = (new FileHandle "./TEST", O_RDONLY
or new FileHandle "TEST", O_RDONLY);
ok(defined($fh), "create new handle O_RDONLY");
my $buffer = <$fh>;
is($buffer, "#!./perl\n", "Got expected first line via handle");
ungetc $fh ord 'A';
my $buf;
CORE::read($fh, $buf,1);
is($buf, 'A', "Got expected ordinal value via ungetc in handle's input stream");
close $fh;
$fh = new FileHandle;
ok(($fh->open("< TEST") && <$fh> eq $buffer),
"FileHandle open() method created handle, which got expected first line");
$fh->seek(0,0);
ok((<$fh> eq $buffer), "Averted possible mixed CRLF/LF in t/TEST");
$fh->seek(0,2);
my $line = <$fh>;
ok(! (defined($line) || !$fh->eof), "FileHandle seek() and eof() methods");
ok(($fh->open("TEST","r") && !$fh->tell && $fh->close),
"FileHandle open(), tell() and close() methods");
autoflush STDOUT 0;
ok(! $|, "handle not auto-flushing current output channel");
autoflush STDOUT 1;
ok($|, "handle auto-flushing current output channel");
{
my ($rd,$wr) = FileHandle::pipe;
my $non_forking = (
$^O eq 'VMS' || $^O eq 'os2' || $^O eq 'amigaos' ||
$^O eq 'MSWin32' || $Config{d_fork} ne 'define'
);
my $content = "Writing to one end of a pipe, reading from the other\n";
if ($non_forking) {
$wr->autoflush;
$wr->print($content);
is($rd->getline, $content,
"Read content from pipe on non-forking platform");
}
else {
my $child;
if ($child = fork) {
# parent
$wr->close;
is($rd->getline, $content,
"Read content from pipe on forking platform");
}
elsif (defined $child) {
# child
$rd->close;
$wr->print($content);
exit(0);
}
else {
die "fork failed: $!";
}
}
}
SKIP: {
skip "Empty filename perfectly legal on VMS", 1 if $^O eq 'VMS';
ok(!FileHandle->new('', 'r'), "Can't open empty filename");
}
done_testing();
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