1 files changed, 0 insertions, 8 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
index e8daedac53..31e87722d9 100644
--- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
@@ -53,14 +53,6 @@ module ActiveRecord
         end
       end
 
-      def test_composite_primary_key
-        with_example_table 'id serial, number serial, PRIMARY KEY (id, number)' do
-          silence_warnings do
-            assert_nil @connection.primary_key('ex')
-          end
-        end
-      end
-
       def test_primary_key_raises_error_if_table_not_found
         assert_raises(ActiveRecord::StatementInvalid) do
           @connection.primary_key('unobtainium')