Test for f1f04caf60e4fc9dc3b12109e0be831f2d692810

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index 9a0de5c430..54e39a0f5f 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -880,6 +880,14 @@ end.join
     }
   end
 
+  def test_frozen_error_message
+    obj = Object.new.freeze
+    e = assert_raise_with_message(FrozenError, /can't modify frozen #{obj.class}/) {
+      obj.instance_variable_set(:@test, true)
+    }
+    assert_include(e.message, obj.inspect)
+  end
+
   def test_name_error_new_default
     error = NameError.new
     assert_equal("NameError", error.message)