adding an error case for no matching (and tests)

[gitmo/Moose.git] / lib / Moose / Util / TypeConstraints.pm

diff --git a/lib/Moose/Util/TypeConstraints.pm b/lib/Moose/Util/TypeConstraints.pm
index ac9b560..b5ff3f7 100644 (file)
--- a/lib/Moose/Util/TypeConstraints.pm
+++ b/lib/Moose/Util/TypeConstraints.pm
@@ -467,9 +467,11 @@ sub match_on_type {
             return $action->($to_match);
         }
     }
+    (defined $default)
+        || __PACKAGE__->_throw_error("No cases matched for $to_match");
     {
         local $_ = $to_match;
-        return $default->($to_match) if $default;
+        return $default->($to_match);
     }
 }