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use strict;
use FileHandle;
use FileHandle::Unget;
use File::Spec::Functions qw(:ALL);
use Test::More tests => 5;
use File::Temp;
my $tmp = File::Temp->new();
{
print $tmp "first line\n";
print $tmp "second line\n";
close $tmp;
}
# Test ungetc'ing and reading a line of data
{
my $fh = new FileHandle::Unget($tmp->filename);
my $line = <$fh>;
$fh->ungetc(ord("\n"));
$fh->ungetc(ord("d"));
$fh->ungetc(ord("e"));
$fh->ungetc(ord("t"));
$fh->ungetc(ord("r"));
$fh->ungetc(ord("e"));
$fh->ungetc(ord("s"));
$fh->ungetc(ord("n"));
$fh->ungetc(ord("i"));
$line = <$fh>;
# 1
is($line, "inserted\n",'Ungetc');
$line = <$fh>;
# 2
is($line, "second line\n",'getline()');
$fh->close;
}
# Test ungetc'ing and read'ing some bytes of data
{
my $fh = new FileHandle::Unget($tmp->filename);
my $line = <$fh>;
$fh->ungetc(ord("\n"));
$fh->ungetc(ord("d"));
$fh->ungetc(ord("e"));
$fh->ungetc(ord("t"));
$fh->ungetc(ord("r"));
$fh->ungetc(ord("e"));
$fh->ungetc(ord("s"));
$fh->ungetc(ord("n"));
$fh->ungetc(ord("i"));
read($fh, $line, 6);
# 3
is($line, "insert", 'read() after insert');
$line = <$fh>;
# 4
is($line, "ed\n", 'getline() 1');
$line = <$fh>;
# 5
is($line, "second line\n", 'getline() 2');
$fh->close;
}
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