1 files changed, 7 insertions, 0 deletions
diff --git a/activerecord/test/cases/validations/presence_validation_test.rb b/activerecord/test/cases/validations/presence_validation_test.rb
index cd9175f454..1de8934406 100644
--- a/activerecord/test/cases/validations/presence_validation_test.rb
+++ b/activerecord/test/cases/validations/presence_validation_test.rb
@@ -18,6 +18,13 @@ class PresenceValidationTest < ActiveRecord::TestCase
     assert b.valid?
   end
 
+  def test_validates_presence_of_has_one
+    Boy.validates_presence_of(:face)
+    b = Boy.new
+    assert b.invalid?, "should not be valid if has_one association missing"
+    assert_equal 1, b.errors[:face].size, "validates_presence_of should only add one error"
+  end
+
   def test_validates_presence_of_has_one_marked_for_destruction
     Boy.validates_presence_of(:face)
     b = Boy.new