Test parent of ArrayRef|HashRef

diff --git a/t/type_constraints/union_types.t b/t/type_constraints/union_types.t
index 4fe30d8..9e5385b 100644 (file)
--- a/t/type_constraints/union_types.t
+++ b/t/type_constraints/union_types.t
@@ -151,4 +151,10 @@ is(
     '... (ArrayRef | HashRef) cannot accept Numbers'
 );
 
+is(
+    $ArrayRef_or_HashRef->parent,
+    find_type_constraint('Ref'),
+    'parent of ArrayRef|HashRef is Ref'
+);
+
 done_testing;