Support interval schedule type

Fixes

lib/sidekiq/scheduler.rb

@@ -100,7 +100,7 @@ def self.load_schedule_job(name, config)
       if config['rails_env'].nil? || self.rails_env_matches?(config)
         logger.info "Scheduling #{name} #{config}"
         interval_defined = false
-        interval_types = %w{cron every at in}
+        interval_types = %w{cron every at in interval}
         interval_types.each do |interval_type|
           if !config[interval_type].nil? && config[interval_type].length > 0
             args = self.optionizate_interval_value(config[interval_type])

spec/sidekiq/scheduler_spec.rb

@@ -341,6 +341,15 @@
       end
     end
 
+    context 'interval schedule' do
+      it 'loads correctly' do
+        Sidekiq::Scheduler.load_schedule_job('some_job', ScheduleFaker.interval_schedule)
+
+        expect(Sidekiq::Scheduler.rufus_scheduler.jobs.size).to be(1)
+        expect(Sidekiq::Scheduler.scheduled_jobs.keys).to eq(%w(some_job))
+      end
+    end
+
     it 'does not load without a timing option' do
       Sidekiq::Scheduler.load_schedule_job('some_job', ScheduleFaker.invalid_schedule)
 

spec/support/faker/schedule.rb

@@ -36,6 +36,12 @@ def self.in_schedule(options = {})
     }.merge(default_options(options))
   end
 
+  def self.interval_schedule(options = {})
+    options = {
+      'interval' => '5m'
+    }.merge(default_options(options))
+  end
+
   def self.invalid_schedule(options = {})
     default_options(options)
   end