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diff --git a/t/030_roles/failing/021_role_composite_exclusion.t b/t/030_roles/failing/021_role_composite_exclusion.t
new file mode 100644
index 0000000..4d0a8d3
--- /dev/null
+++ b/t/030_roles/failing/021_role_composite_exclusion.t
@@ -0,0 +1,109 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 12;
+use Test::Exception;
+
+use Mouse::Meta::Role::Application::RoleSummation;
+use Mouse::Meta::Role::Composite;
+
+{
+    package Role::Foo;
+    use Mouse::Role;
+    
+    package Role::Bar;
+    use Mouse::Role;
+    
+    package Role::ExcludesFoo;
+    use Mouse::Role;
+    excludes 'Role::Foo';
+    
+    package Role::DoesExcludesFoo;
+    use Mouse::Role;
+    with 'Role::ExcludesFoo';  
+    
+    package Role::DoesFoo;
+    use Mouse::Role;
+    with 'Role::Foo';    
+}
+
+ok(Role::ExcludesFoo->meta->excludes_role('Role::Foo'), '... got the right exclusions');
+ok(Role::DoesExcludesFoo->meta->excludes_role('Role::Foo'), '... got the right exclusions');
+
+# test simple exclusion
+dies_ok {
+    Mouse::Meta::Role::Application::RoleSummation->new->apply(
+        Mouse::Meta::Role::Composite->new(
+            roles => [
+                Role::Foo->meta,
+                Role::ExcludesFoo->meta,
+            ]
+        )
+    );
+} '... this fails as expected';
+
+# test no conflicts
+{
+    my $c = Mouse::Meta::Role::Composite->new(
+        roles => [
+            Role::Foo->meta,
+            Role::Bar->meta,
+        ]
+    );
+    isa_ok($c, 'Mouse::Meta::Role::Composite');
+
+    is($c->name, 'Role::Foo|Role::Bar', '... got the composite role name');
+    
+    lives_ok {
+        Mouse::Meta::Role::Application::RoleSummation->new->apply($c);
+    } '... this lives as expected';    
+}
+
+# test no conflicts w/exclusion
+{
+    my $c = Mouse::Meta::Role::Composite->new(
+        roles => [
+            Role::Bar->meta,
+            Role::ExcludesFoo->meta,            
+        ]
+    );
+    isa_ok($c, 'Mouse::Meta::Role::Composite');
+
+    is($c->name, 'Role::Bar|Role::ExcludesFoo', '... got the composite role name');
+    
+    lives_ok {
+        Mouse::Meta::Role::Application::RoleSummation->new->apply($c);
+    } '... this lives as expected';    
+    
+    is_deeply([$c->get_excluded_roles_list], ['Role::Foo'], '... has excluded roles');    
+}
+
+
+# test conflict with an "inherited" exclusion
+dies_ok {
+    Mouse::Meta::Role::Application::RoleSummation->new->apply(
+        Mouse::Meta::Role::Composite->new(
+            roles => [
+                Role::Foo->meta,
+                Role::DoesExcludesFoo->meta,
+            ]
+        )
+    );
+    
+} '... this fails as expected';
+
+# test conflict with an "inherited" exclusion of an "inherited" role
+dies_ok {
+    Mouse::Meta::Role::Application::RoleSummation->new->apply(
+        Mouse::Meta::Role::Composite->new(        
+            roles => [
+                Role::DoesFoo->meta,            
+                Role::DoesExcludesFoo->meta,
+            ]
+        )
+    );
+} '... this fails as expected';
+
+