Add a missing test on job retry to the excon err

spec/jobs/application_job_spec.rb

@@ -13,7 +13,23 @@ RSpec.describe ApplicationJob, type: :job do
     end
   end
 
+  context 'when ::Excon::Error::BadRequest is raised' do
+    # https://api.rubyonrails.org/classes/ActiveJob/Exceptions/ClassMethods.html#method-i-retry_on
+    # retry on will try 5 times and then bubble up the error
+    it 'makes 5 attempts' do
+      assert_performed_jobs 5 do
+        ExconErrJob.perform_later rescue ::Excon::Error::BadRequest
+      end
+    end
+  end
+
   class ChildJob < ApplicationJob
     def perform; end
   end
+
+  class ExconErrJob < ApplicationJob
+    def perform
+      raise ::Excon::Error::BadRequest.new('bad request')
+    end
+  end
 end