use strict;
use warnings;
use utf8;
use open qw( :encoding(UTF-8) :std );
use Test::More tests => 16;
use Unicode::Util qw( graph_length code_length byte_length );

# Unicode::Util tests for graph_length, code_length, and byte_length

my $grapheme = "\x{44E}\x{301}";  # ю́

is graph_length($grapheme), 1, 'graphemes in grapheme cluster';
is code_length($grapheme),  2, 'codepoints in grapheme cluster';
is byte_length($grapheme),  4, 'bytes in grapheme cluster';

my $ascii = 'abc';

is graph_length($ascii), 3, 'graphemes in ASCII string';
is code_length($ascii),  3, 'codepoints in ASCII string';
is byte_length($ascii),  3, 'bytes in ASCII string';

my $aring = 'å';

is byte_length($aring),               2, 'letter a with ring in UTF-8 (default)';
is byte_length($aring, 'UTF-8'),      2, 'letter a with ring in UTF-8';
is byte_length($aring, 'ISO-8859-1'), 1, 'letter a with ring in ISO-8859-1';

is byte_length("\x{1D160}", 'UTF-8'      ),  4, 'MUSICAL SYMBOL EIGHTH NOTE';
is byte_length("\x{1D160}", 'UTF-8', 'C' ), 12, 'NFC is 3 times larger';
is byte_length("\x{0390}",  'UTF-8'      ),  2, 'GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS';
is byte_length("\x{0390}",  'UTF-8', 'D' ),  6, 'NFD is 3 times larger';
is byte_length("\x{FDFA}",  'UTF-8'      ),  3, 'ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM';
is byte_length("\x{FDFA}",  'UTF-8', 'KC'), 33, 'NFKC is 11 times larger!';
is byte_length("\x{FDFA}",  'UTF-8', 'KD'), 33, 'NFKD is 11 times larger!';