1 files changed, 11 insertions, 0 deletions
diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 71d3b30dbf..ac92729f0a 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -251,6 +251,13 @@ class TestMethod < Test::Unit::TestCase
     m = o.method(:bar).unbind
     assert_raise(TypeError) { m.bind(Object.new) }
 
+    cx = EnvUtil.labeled_class("X\u{1f431}")
+    assert_raise_with_message(TypeError, /X\u{1f431}/) {
+      o.method(cx)
+    }
+  end
+
+  def test_bind_module_instance_method
     feature4254 = '[ruby-core:34267]'
     m = M.instance_method(:meth)
     assert_equal(:meth, m.bind(Object.new).call, feature4254)
@@ -276,6 +283,10 @@ class TestMethod < Test::Unit::TestCase
     assert_raise(TypeError) do
       Class.new.class_eval { define_method(:bar, o.method(:bar)) }
     end
+    cx = EnvUtil.labeled_class("X\u{1f431}")
+    assert_raise_with_message(TypeError, /X\u{1F431}/) {
+      Class.new {define_method(cx) {}}
+    }
   end
 
   def test_define_method_no_proc