Add two schedulers' test

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