Add two schedulers' test

app/workers/scheduler/sidekiq_health_scheduler.rb

@@ -3,7 +3,7 @@
 class Scheduler::SidekiqHealthScheduler
   include Sidekiq::Worker
 
-  sidekiq_options retry: 0
+  sidekiq_options retry: 0, lock: :until_executed, lock_ttl: 15.seconds.to_i
 
   def perform
     url = ENV.fetch('SIDEKIQ_HEALTH_FETCH_URL', nil)

app/workers/scheduler/update_instance_info_scheduler.rb

@@ -3,7 +3,7 @@
 class Scheduler::UpdateInstanceInfoScheduler
   include Sidekiq::Worker
 
-  sidekiq_options retry: 1
+  sidekiq_options retry: 0, lock: :until_executed, lock_ttl: 1.day.to_i
 
   def perform
     Instance.select(:domain).reorder(nil).find_in_batches do |instances|

spec/workers/scheduler/sidekiq_health_scheduler_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Scheduler::SidekiqHealthScheduler do
+  let(:worker) { described_class.new }
+
+  describe 'perform' do
+    it 'runs without error' do
+      expect { worker.perform }.to_not raise_error
+    end
+  end
+end

spec/workers/scheduler/update_instance_info_scheduler_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Scheduler::UpdateInstanceInfoScheduler do
+  let(:worker) { described_class.new }
+
+  describe 'perform' do
+    it 'runs without error' do
+      expect { worker.perform }.to_not raise_error
+    end
+  end
+end