1 files changed, 11 insertions, 0 deletions
diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index 0718d0886f..23e64bee7e 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -327,6 +327,17 @@ module ActiveRecord
       def test_pool_sets_connection_visitor
         assert @pool.connection.visitor.is_a?(Arel::Visitors::ToSql)
       end
+
+      # make sure exceptions are thrown when establish_connection
+      # is called with a anonymous class
+      def test_anonymous_class_exception
+        anonymous = Class.new(ActiveRecord::Base)
+        handler = ActiveRecord::Base.connection_handler
+
+        assert_raises(RuntimeError) {
+          handler.establish_connection anonymous, nil
+        }
+      end
     end
   end
 end