Fix really_destroy used against a has_one relationship that is soft deleted

Author: Benjamin Alexander

Diff for: lib/paranoia.rb

@@ -182,6 +182,9 @@ def really_destroy!(update_destroy_attributes: true)
             association_data = self.send(name)
             # has_one association can return nil
             # .paranoid? will work for both instances and classes
+            if association_data.nil? && reflection.has_one? && reflection.klass.paranoid?
+              association_data = reflection.klass.only_deleted.find_by(reflection.foreign_key => self.id)
+            end
             next unless association_data && association_data.paranoid?
             if reflection.collection?
               next association_data.with_deleted.find_each { |record|

Diff for: test/paranoia_test.rb

@@ -1418,6 +1418,16 @@ def test_update_has_many_through_relation_delete_associations
     assert_equal 2, employer.jobs.with_deleted.count
   end
 
+  def test_really_destroy_against_soft_deleted_object_with_has_one_association
+    model = ParanoidModelWithHasOne.create(paranoid_model_with_belong: ParanoidModelWithBelong.create)
+    assert_equal 1, ParanoidModelWithBelong.with_deleted.count
+    model.destroy
+    assert_equal 1, ParanoidModelWithBelong.with_deleted.count
+    model.reload
+    model.really_destroy!
+    assert_equal 0, ParanoidModelWithBelong.with_deleted.count # I think this should fail.
+  end
+
   private
   def get_featureful_model
     FeaturefulModel.new(:name => "not empty")