test/base/test_layout.rb in nanoc-3.3.2 vs test/base/test_layout.rb in nanoc-3.3.3

@@ -20,10 +20,10 @@
     raised = false
     begin
       layout.identifier.chop!
     rescue => error
       raised = true
-      assert_match /^can't modify frozen [Ss]tring$/, error.message
+      assert_match /(^can't modify frozen [Ss]tring|^unable to modify frozen object$)/, error.message
     end
     assert raised, 'Should have raised when trying to modify a frozen string'
   end
 
   def test_lookup_with_known_attribute