1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index b1eba05933..c82f93a3f0 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -291,8 +291,17 @@ class RelationTest < ActiveRecord::TestCase
       Topic.order(Arel.sql("title NULLS FIRST")).reverse_order
     end
     assert_raises(ActiveRecord::IrreversibleOrderError) do
+      Topic.order(Arel.sql("title  NULLS  FIRST")).reverse_order
+    end
+    assert_raises(ActiveRecord::IrreversibleOrderError) do
       Topic.order(Arel.sql("title nulls last")).reverse_order
     end
+    assert_raises(ActiveRecord::IrreversibleOrderError) do
+      Topic.order(Arel.sql("title NULLS FIRST, author_name")).reverse_order
+    end
+    assert_raises(ActiveRecord::IrreversibleOrderError) do
+      Topic.order(Arel.sql("author_name, title nulls last")).reverse_order
+    end
   end
 
   def test_default_reverse_order_on_table_without_primary_key