Share foreign_key_present? implementation in _has_ associations

1 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/test/cases/associations/has_one_associations_test.rb b/activerecord/test/cases/associations/has_one_associations_test.rb
index a69f7a5262..ddf967b166 100644
--- a/activerecord/test/cases/associations/has_one_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_associations_test.rb
@@ -566,6 +566,12 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
     assert_equal author.post, post
   end
 
+  def test_has_one_loading_for_new_record
+    post = Post.create!(author_id: 42, title: 'foo', body: 'bar')
+    author = Author.new(id: 42)
+    assert author.post
+  end
+
   def test_has_one_relationship_cannot_have_a_counter_cache
     assert_raise(ArgumentError) do
       Class.new(ActiveRecord::Base) do