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#!/usr/bin/perl -w
use strict;
use IO::Async::Test;
use Test::More tests => 7;
use Test::Fatal;
use Test::Refcount;
use Errno qw( EAGAIN EWOULDBLOCK );
use IO::Async::Loop;
use IO::Async::OS;
use IO::Async::Stream;
my $loop = IO::Async::Loop->new;
testing_loop( $loop );
sub mkhandles
{
my ( $rd, $wr ) = IO::Async::OS->pipepair or die "Cannot pipe() - $!";
# Need handles in nonblocking mode
$rd->blocking( 0 );
$wr->blocking( 0 );
return ( $rd, $wr );
}
# useful test function
sub read_data
{
my ( $s ) = @_;
my $buffer;
my $ret = $s->sysread( $buffer, 8192 );
return $buffer if( defined $ret && $ret > 0 );
die "Socket closed" if( defined $ret && $ret == 0 );
return "" if $! == EAGAIN or $! == EWOULDBLOCK;
die "Cannot sysread() - $!";
}
# To test correct multi-byte encoding handling, we'll use a UTF-8 character
# that requires multiple bytes. Furthermore we'll use one that doesn't appear
# in Latin-1
#
# 'ĉ' [U+0109] - LATIN SMALL LETTER C WITH CIRCUMFLEX
# :0xc4 0x89
# Read encoding
{
my ( $rd, $wr ) = mkhandles;
my $read = "";
my $stream = IO::Async::Stream->new(
read_handle => $rd,
encoding => "UTF-8",
on_read => sub {
$read = ${$_[1]};
${$_[1]} = "";
return 0;
},
);
$loop->add( $stream );
$wr->syswrite( "\xc4\x89" );
wait_for { length $read };
is( $read, "\x{109}", 'Unicode characters read by on_read' );
$wr->syswrite( "\xc4\x8a\xc4" );
$read = "";
wait_for { length $read };
is( $read, "\x{10a}", 'Partial UTF-8 character not yet visible' );
$wr->syswrite( "\x8b" );
$read = "";
wait_for { length $read };
is( $read, "\x{10b}", 'Partial UTF-8 character visible after completion' );
# An invalid sequence
$wr->syswrite( "\xc4!" );
$read = "";
wait_for { length $read };
is( $read, "\x{fffd}!", 'Invalid UTF-8 byte yields U+FFFD' );
$loop->remove( $stream );
}
# Write encoding
{
my ( $rd, $wr ) = mkhandles;
my $stream = IO::Async::Stream->new(
write_handle => $wr,
encoding => "UTF-8",
);
$loop->add( $stream );
my $flushed;
$stream->write( "\x{109}", on_flush => sub { $flushed++ } );
wait_for { $flushed };
is( read_data( $rd ), "\xc4\x89", 'UTF-8 bytes written by ->write' );
$stream->configure( write_len => 1 );
$stream->write( "\x{109}" );
my $byte;
$loop->loop_once while !length( $byte = read_data( $rd ) );
is( $byte, "\xc4", 'First UTF-8 byte written with write_len 1' );
$loop->loop_once while !length( $byte = read_data( $rd ) );
is( $byte, "\x89", 'Remaining UTF-8 byte written with write_len 1' );
$loop->remove( $stream );
}
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