--- /dev/null
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 28;
+use Test::Exception;
+
+BEGIN {
+ use_ok("Mouse::Util::TypeConstraints");
+ use_ok('Mouse::Meta::TypeConstraint::Parameterized');
+}
+
+lives_ok {
+ subtype 'AlphaKeyHash' => as 'HashRef'
+ => where {
+ # no keys match non-alpha
+ (grep { /[^a-zA-Z]/ } keys %$_) == 0
+ };
+} '... created the subtype special okay';
+
+lives_ok {
+ subtype 'Trihash' => as 'AlphaKeyHash'
+ => where {
+ keys(%$_) == 3
+ };
+} '... created the subtype special okay';
+
+lives_ok {
+ subtype 'Noncon' => as 'Item';
+} '... created the subtype special okay';
+
+{
+ my $t = find_type_constraint('AlphaKeyHash');
+ isa_ok($t, 'Mouse::Meta::TypeConstraint');
+
+ is($t->name, 'AlphaKeyHash', '... name is correct');
+
+ my $p = $t->parent;
+ isa_ok($p, 'Mouse::Meta::TypeConstraint');
+
+ is($p->name, 'HashRef', '... parent name is correct');
+
+ ok($t->check({ one => 1, two => 2 }), '... validated it correctly');
+ ok(!$t->check({ one1 => 1, two2 => 2 }), '... validated it correctly');
+
+ ok( $t->equals($t), "equals to self" );
+ ok( !$t->equals($t->parent), "not equal to parent" );
+}
+
+my $hoi = Mouse::Util::TypeConstraints::find_or_parse_type_constraint('AlphaKeyHash[Int]');
+
+ok($hoi->check({ one => 1, two => 2 }), '... validated it correctly');
+ok(!$hoi->check({ one1 => 1, two2 => 2 }), '... validated it correctly');
+ok(!$hoi->check({ one => 'uno', two => 'dos' }), '... validated it correctly');
+ok(!$hoi->check({ one1 => 'un', two2 => 'deux' }), '... validated it correctly');
+
+ok( $hoi->equals($hoi), "equals to self" );
+ok( !$hoi->equals($hoi->parent), "equals to self" );
+ok( !$hoi->equals(find_type_constraint('AlphaKeyHash')), "not equal to unparametrized self" );
+ok( $hoi->equals( Mouse::Meta::TypeConstraint::Parameterized->new( name => "Blah", parent => find_type_constraint("AlphaKeyHash"), type_parameter => find_type_constraint("Int") ) ), "equal to clone" );
+ok( !$hoi->equals( Mouse::Meta::TypeConstraint::Parameterized->new( name => "Oink", parent => find_type_constraint("AlphaKeyHash"), type_parameter => find_type_constraint("Str") ) ), "not equal to different parameter" );
+
+my $th = Mouse::Util::TypeConstraints::find_or_parse_type_constraint('Trihash[Bool]');
+
+ok(!$th->check({ one => 1, two => 1 }), '... validated it correctly');
+ok($th->check({ one => 1, two => 0, three => 1 }), '... validated it correctly');
+ok(!$th->check({ one => 1, two => 2, three => 1 }), '... validated it correctly');
+ok(!$th->check({foo1 => 1, bar2 => 0, baz3 => 1}), '... validated it correctly');
+
+dies_ok {
+ Mouse::Meta::TypeConstraint::Parameterized->new(
+ name => 'Str[Int]',
+ parent => find_type_constraint('Str'),
+ type_parameter => find_type_constraint('Int'),
+ );
+} 'non-containers cannot be parameterized';
+
+dies_ok {
+ Mouse::Meta::TypeConstraint::Parameterized->new(
+ name => 'Noncon[Int]',
+ parent => find_type_constraint('Noncon'),
+ type_parameter => find_type_constraint('Int'),
+ );
+} 'non-containers cannot be parameterized';
+