1 files changed, 3 insertions, 1 deletions
diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb
index 3bd2e909d7..e1129704a6 100644
--- a/activerecord/test/cases/dirty_test.rb
+++ b/activerecord/test/cases/dirty_test.rb
@@ -325,6 +325,8 @@ class DirtyTest < ActiveRecord::TestCase
   end
 
   def test_partial_update_with_optimistic_locking
+    Person.first # cache metadata in advance to avoid extra sql statements executed while testing
+
     person = Person.new(:first_name => 'foo')
     old_lock_version = 1
 
@@ -530,7 +532,7 @@ class DirtyTest < ActiveRecord::TestCase
 
       pirate = target.create(:created_on => created_on)
       pirate.reload # Here mysql truncate the usec value to 0
-      
+
       pirate.created_on = created_on
       assert !pirate.created_on_changed?
     end