fix: fix failed test

Author: ramsayleung

config/environments/test.rb

@@ -50,4 +50,7 @@
 
   # Raise error when a before_action's only/except options reference missing actions.
   config.action_controller.raise_on_missing_callback_actions = true
+
+  # Override for tests
+  config.probability_threshold = 0.5
 end