1 files changed, 9 insertions, 0 deletions
diff --git a/test/visitors/test_oracle.rb b/test/visitors/test_oracle.rb
index c6fcb7134c..87b94409e3 100644
--- a/test/visitors/test_oracle.rb
+++ b/test/visitors/test_oracle.rb
@@ -134,6 +134,15 @@ module Arel
         end
 
       end
+
+      it 'modified except to be minus' do
+        left = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 10")
+        right = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 20")
+        sql = @visitor.accept Nodes::Except.new(left, right)
+        sql.must_be_like %{
+          ( SELECT * FROM users WHERE age > 10 MINUS SELECT * FROM users WHERE age > 20 )
+        }
+      end
     end
   end
 end