Add dummy_stage_tournament

spec/factories/tournaments.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :tournament do
+  factory :tournament, aliases: [:stage_less_tournament] do
     name { Faker::Creature::Dog.name }
     description { Faker::Lorem.sentence }
     user
@@ -34,5 +34,14 @@ FactoryBot.define do
         end
       end
     end
+
+    factory :dummy_stage_tournament do
+      transient do
+        stage_count { 3 }
+      end
+      after(:create) do |tournament, evaluator|
+        tournament.stages.concat create_list(:stage, evaluator.stage_count)
+      end
+    end
   end
 end