diff -r 000000000000 -r f65c3dd5742a t/10-usage.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/t/10-usage.t	Tue Jul 29 12:17:35 2014 +0200
@@ -0,0 +1,45 @@
+#! perl
+
+use strict;
+use warnings;
+use Test::More;
+use Test::Exception;
+
+use_ok 'Scalar::RefType' or BAIL_OUT q{Can't load the module};
+isa_ok tie(my $h => 'Scalar::RefType', {}) => 'Scalar::RefType';
+isa_ok tie(my $a => 'Scalar::RefType', []) => 'Scalar::RefType';
+isa_ok tie(my $s => 'Scalar::RefType', \(undef)) => 'Scalar::RefType';
+isa_ok tie(my $p => 'Scalar::RefType', undef)    => 'Scalar::RefType';
+
+subtest 'NAMES' => sub {
+    isa_ok tie(my $h => 'Scalar::RefType', ref {}) => 'Scalar::RefType';
+    isa_ok tie(my $a => 'Scalar::RefType', ref []) => 'Scalar::RefType';
+    isa_ok tie(my $s => 'Scalar::RefType', ref \(undef)) => 'Scalar::RefType';
+    isa_ok tie(my $p => 'Scalar::RefType', '') => 'Scalar::RefType';
+
+    is tied($h)->{type}, 'HASH'   => 'is a hash ref';
+    is tied($a)->{type}, 'ARRAY'  => 'is a array ref';
+    is tied($s)->{type}, 'SCALAR' => 'is a scalar';
+    is tied($p)->{type}, ''       => 'is a "plain"';
+
+};
+
+is tied($h)->{type}, 'HASH'   => 'is a hash ref';
+is tied($a)->{type}, 'ARRAY'  => 'is a array ref';
+is tied($s)->{type}, 'SCALAR' => 'is a scalar';
+is tied($p)->{type}, ''       => 'is a "plain"';
+
+is ref($h = { a => 'A' }), 'HASH' => 'hash: assignment';
+is ref($a = ['a', 'b']), 'ARRAY' => 'array: assignment';
+is ref($s = \6), 'SCALAR' => 'scalar: assignment';
+is ref($p = 6), '' => 'plain: assignment';
+
+is $h->{a}, 'A' => 'hash: got the value';
+is $a->[1], 'b' => 'array: got the value';
+is $$s, 6, => 'scalar: got the value';
+is $p,  6, => 'plain: got the value';
+
+throws_ok { $h = [] } qr/invalid/ => 'hash: dies on invalid type';
+throws_ok { $h = 6 } qr/invalid/  => 'hash: dies on invalid type';
+
+done_testing;