--- /dev/null
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More;
+
+BEGIN {
+ use_ok('Moose::Util', ':all');
+}
+
+{ package SCBR::Role;
+ use Moose::Role;
+}
+
+{ package SCBR::A;
+ use Moose;
+}
+is search_class_by_role('SCBR::A', 'SCBR::Role'), undef, '... not found role returns undef';
+is search_class_by_role('SCBR::A', SCBR::Role->meta), undef, '... not found role returns undef';
+
+{ package SCBR::B;
+ use Moose;
+ extends 'SCBR::A';
+ with 'SCBR::Role';
+}
+is search_class_by_role('SCBR::B', 'SCBR::Role'), 'SCBR::B', '... class itself returned if it does role';
+is search_class_by_role('SCBR::B', SCBR::Role->meta), 'SCBR::B', '... class itself returned if it does role';
+
+{ package SCBR::C;
+ use Moose;
+ extends 'SCBR::B';
+}
+is search_class_by_role('SCBR::C', 'SCBR::Role'), 'SCBR::B', '... nearest class doing role returned';
+is search_class_by_role('SCBR::C', SCBR::Role->meta), 'SCBR::B', '... nearest class doing role returned';
+
+{ package SCBR::D;
+ use Moose;
+ extends 'SCBR::C';
+ with 'SCBR::Role';
+}
+is search_class_by_role('SCBR::D', 'SCBR::Role'), 'SCBR::D', '... nearest class being direct class returned';
+is search_class_by_role('SCBR::D', SCBR::Role->meta), 'SCBR::D', '... nearest class being direct class returned';
+
+done_testing;