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#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
}
my @expect;
my $data = "";
my @data = ();
my $test = 1;
sub ok { print "not " unless shift; print "ok ",$test++,"\n"; }
package Implement;
BEGIN { *ok = \*main::ok }
sub compare {
return unless @expect;
return ok(0) unless(@_ == @expect);
my $i;
for($i = 0 ; $i < @_ ; $i++) {
next if $_[$i] eq $expect[$i];
return ok(0);
}
ok(1);
}
sub TIEHANDLE {
compare(TIEHANDLE => @_);
my ($class,@val) = @_;
return bless \@val,$class;
}
sub PRINT {
compare(PRINT => @_);
1;
}
sub PRINTF {
compare(PRINTF => @_);
2;
}
sub READLINE {
compare(READLINE => @_);
wantarray ? @data : shift @data;
}
sub GETC {
compare(GETC => @_);
substr($data,0,1);
}
sub READ {
compare(READ => @_);
substr($_[1],$_[3] || 0) = substr($data,0,$_[2]);
3;
}
sub WRITE {
compare(WRITE => @_);
$data = substr($_[1],$_[3] || 0, $_[2]);
length($data);
}
sub CLOSE {
compare(CLOSE => @_);
5;
}
package main;
use Symbol;
print "1..33\n";
my $fh = gensym;
@expect = (TIEHANDLE => 'Implement');
my $ob = tie *$fh,'Implement';
ok(ref($ob) eq 'Implement');
ok(tied(*$fh) == $ob);
@expect = (PRINT => $ob,"some","text");
$r = print $fh @expect[2,3];
ok($r == 1);
@expect = (PRINTF => $ob,"%s","text");
$r = printf $fh @expect[2,3];
ok($r == 2);
$text = (@data = ("the line\n"))[0];
@expect = (READLINE => $ob);
$ln = <$fh>;
ok($ln eq $text);
@expect = ();
@in = @data = qw(a line at a time);
@line = <$fh>;
@expect = @in;
Implement::compare(@line);
@expect = (GETC => $ob);
$data = "abc";
$ch = getc $fh;
ok($ch eq "a");
$buf = "xyz";
@expect = (READ => $ob, $buf, 3);
$data = "abc";
$r = read $fh,$buf,3;
ok($r == 3);
ok($buf eq "abc");
$buf = "xyzasd";
@expect = (READ => $ob, $buf, 3,3);
$data = "abc";
$r = sysread $fh,$buf,3,3;
ok($r == 3);
ok($buf eq "xyzabc");
$buf = "qwerty";
@expect = (WRITE => $ob, $buf, 4,1);
$data = "";
$r = syswrite $fh,$buf,4,1;
ok($r == 4);
ok($data eq "wert");
$buf = "qwerty";
@expect = (WRITE => $ob, $buf, 4);
$data = "";
$r = syswrite $fh,$buf,4;
ok($r == 4);
ok($data eq "qwer");
$buf = "qwerty";
@expect = (WRITE => $ob, $buf, 6);
$data = "";
$r = syswrite $fh,$buf;
ok($r == 6);
ok($data eq "qwerty");
@expect = (CLOSE => $ob);
$r = close $fh;
ok($r == 5);
# Does aliasing work with tied FHs?
*ALIAS = *$fh;
@expect = (PRINT => $ob,"some","text");
$r = print ALIAS @expect[2,3];
ok($r == 1);
{
use warnings;
# Special case of aliasing STDERR, which used
# to dump core when warnings were enabled
*STDERR = *$fh;
@expect = (PRINT => $ob,"some","text");
$r = print STDERR @expect[2,3];
ok($r == 1);
}
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