BEGIN {
    if ($ENV{PERL_CORE}) {
	chdir('t') if -d 't';
	@INC = $^O eq 'MacOS' ? qw(::lib) : qw(../lib);
    }
}

use strict;
use warnings;
BEGIN { $| = 1; print "1..17\n"; }
my $count = 0;
sub ok ($;$) {
    my $p = my $r = shift;
    if (@_) {
	my $x = shift;
	$p = !defined $x ? !defined $r : !defined $r ? 0 : $r eq $x;
    }
    print $p ? "ok" : "not ok", ' ', ++$count, "\n";
}

use Unicode::Collate;

ok(1);

sub _pack_U   { Unicode::Collate::pack_U(@_) }
sub _unpack_U { Unicode::Collate::unpack_U(@_) }

#########################

#
# No test for Unicode::Collate is included in this .t file.
#
# UCA conformance test requires completely ignorable characters
# (including noncharacters) must be able to be sorted in code point order.
# If not so, Unicode::Collate must not be compliant with UCA.
#
# ~~~ CollationTest_SHIFTED.txt in CollationTest-4.0.0
#
# 206F 0021;	# ! NOMINAL DIGIT SHAPES	[| | | 0251]
# D800 0021;	# ! <surrogate-D800>	[| | | 0251]
# DFFF 0021;	# ! <surrogate-DFFF>	[| | | 0251]
# FDD0 0021;	# ! <noncharacter-FDD0>	[| | | 0251]
# FFFB 0021;	# ! INTERLINEAR ANNOTATION TERMINATOR	[| | | 0251]
# FFFE 0021;	# ! <noncharacter-FFFE>	[| | | 0251]
# FFFF 0021;	# ! <noncharacter-FFFF>	[| | | 0251]
# 1D165 0021;	# ! MS. Cm. STEM	[| | | 0251]
#
# ~~~ CollationTest_NON_IGNORABLE.txt in CollationTest-4.0.0
#
# 206F 0021;	# ! NOMINAL DIGIT SHAPES	[0251 | 0020 | 0002 |]
# D800 0021;	# ! <surrogate-D800>	[0251 | 0020 | 0002 |]
# DFFF 0021;	# ! <surrogate-DFFF>	[0251 | 0020 | 0002 |]
# FDD0 0021;	# ! <noncharacter-FDD0>	[0251 | 0020 | 0002 |]
# FFFB 0021;	# ! INTERLINEAR ANNOTATION TERMINATOR	[0251 | 0020 | 0002 |]
# FFFE 0021;	# ! <noncharacter-FFFE>	[0251 | 0020 | 0002 |]
# FFFF 0021;	# ! <noncharacter-FFFF>	[0251 | 0020 | 0002 |]
# 1D165 0021;	# ! MS. Cm. STEM	[0251 | 0020 | 0002 |]
#

no warnings 'utf8';

ok("\x{206F}!" lt "\x{D800}!");
ok(_pack_U(0x206F, 0x21) lt _pack_U(0xD800, 0x21));

ok("\x{D800}!" lt "\x{DFFF}!");
ok(_pack_U(0xD800, 0x21) lt _pack_U(0xDFFF, 0x21));

ok("\x{DFFF}!" lt "\x{FDD0}!");
ok(_pack_U(0xDFFF, 0x21) lt _pack_U(0xFDD0, 0x21) );

ok("\x{FDD0}!" lt "\x{FFFB}!");
ok(_pack_U(0xFDD0, 0x21) lt _pack_U(0xFFFB, 0x21));

ok("\x{FFFB}!" lt "\x{FFFE}!");
ok(_pack_U(0xFFFB, 0x21) lt _pack_U(0xFFFE, 0x21));

ok("\x{FFFE}!" lt "\x{FFFF}!");
ok(_pack_U(0xFFFE, 0x21) lt _pack_U(0xFFFF, 0x21));

ok("\x{FFFF}!" lt "\x{1D165}!");
ok(_pack_U(0xFFFF, 0x21) lt _pack_U(0x1D165, 0x21));

ok("\000!" lt "\x{FFFF}!");
ok(_pack_U(0, 0x21) lt _pack_U(0xFFFF, 0x21));