I am setting this up, in this way, so that we have some extensibility. We may wish to have some sort of a polymorphic association where multiple models need to have a scheduling model available to them. That being said, as of right now, only the pto model needs it so I am doing a belong_to and has_one association between the two

test/unit/schedule_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class ScheduleTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end