Surface exact job class name in complex argument error message (#5235)

* Surface exact job class name in complex argument error message

* Update job_util.rb

* Update param for ActiveJob arg serialization failure

Co-authored-by: Mike Perham <mperham@gmail.com>

lib/sidekiq/job_util.rb

@@ -13,15 +13,16 @@ module Sidekiq
       raise(ArgumentError, "Job 'at' must be a Numeric timestamp: `#{item}`") if item.key?("at") && !item["at"].is_a?(Numeric)
       raise(ArgumentError, "Job tags must be an Array: `#{item}`") if item["tags"] && !item["tags"].is_a?(Array)
 
+      job_class = item["wrapped"] || item["class"]
       if Sidekiq.options[:on_complex_arguments] == :raise
         msg = <<~EOM
-          Job arguments to #{item["class"]} must be native JSON types, see https://github.com/mperham/sidekiq/wiki/Best-Practices.
+          Job arguments to #{job_class} must be native JSON types, see https://github.com/mperham/sidekiq/wiki/Best-Practices.
           To disable this error, remove `Sidekiq.strict_args!` from your initializer.
         EOM
         raise(ArgumentError, msg) unless json_safe?(item)
       elsif Sidekiq.options[:on_complex_arguments] == :warn
         Sidekiq.logger.warn <<~EOM unless json_safe?(item)
-          Job arguments to #{item["class"]} do not serialize to JSON safely. This will raise an error in
+          Job arguments to #{job_class} do not serialize to JSON safely. This will raise an error in
           Sidekiq 7.0. See https://github.com/mperham/sidekiq/wiki/Best-Practices or raise an error today
           by calling `Sidekiq.strict_args!` during Sidekiq initialization.
         EOM

test/test_client.rb

@@ -2,6 +2,7 @@
 
 require_relative "helper"
 require "sidekiq/api"
+require "sidekiq/rails"
 
 describe Sidekiq::Client do
   describe "errors" do
@@ -220,7 +221,7 @@ describe Sidekiq::Client do
 
         describe "worker that takes deep, nested structures" do
           it "raises an error on JSON-unfriendly structures" do
-            assert_raises ArgumentError do
+            error = assert_raises ArgumentError do
               InterestingWorker.perform_async(
                 {
                   "foo" => [:a, :b, :c],
@@ -228,6 +229,26 @@ describe Sidekiq::Client do
                 }
               )
             end
+            assert_match /Job arguments to InterestingWorker/, error.message
+          end
+        end
+
+        describe 'ActiveJob with non-native json types' do
+          before do
+            ActiveJob::Base.queue_adapter = :sidekiq
+            ActiveJob::Base.logger = nil
+          end
+
+          class TestActiveJob < ActiveJob::Base
+            def perform(arg)
+            end
+          end
+
+          it 'raises error with correct class name' do
+            error = assert_raises ArgumentError do
+              TestActiveJob.perform_later(1.1212.to_d)
+            end
+            assert_match /Job arguments to TestActiveJob/, error.message
           end
         end
       end