Raise an exception when unserialization fails due to a missing class

1 files changed, 8 insertions, 0 deletions

diff --git a/activerecord/test/cases/coders/yaml_column_test.rb b/activerecord/test/cases/coders/yaml_column_test.rb
index b874adc081..45e986c7b6 100644
--- a/activerecord/test/cases/coders/yaml_column_test.rb
+++ b/activerecord/test/cases/coders/yaml_column_test.rb
@@ -48,6 +48,14 @@ module ActiveRecord
         bad_yaml = '--- {'
         assert_equal bad_yaml, coder.load(bad_yaml)
       end
+
+      def test_load_doesnt_handle_undefined_class_or_module
+        coder = YAMLColumn.new
+        missing_class_yaml = '--- !ruby/object:DoesNotExistAndShouldntEver {}\n'
+        assert_raises(ArgumentError) do
+          coder.load(missing_class_yaml)
+        end
+      end
     end
   end
 end