Ensure enqueued count from adapter is an int

This is a small change to handle situations where `nil` is passed back from the adapter.

Author: Stivaros

activejob/lib/active_job/log_subscriber.rb

@@ -50,7 +50,7 @@ def enqueue_all(event)
       info do
         jobs = event.payload[:jobs]
         adapter = event.payload[:adapter]
-        enqueued_count = event.payload[:enqueued_count]
+        enqueued_count = event.payload[:enqueued_count].to_i
 
         if enqueued_count == jobs.size
           enqueued_jobs_message(adapter, jobs)

activejob/test/cases/logging_test.rb

@@ -369,6 +369,25 @@ def test_enqueue_all_job_logging
     assert_match(/Enqueued 3 jobs to .+ \(2 HelloJob, 1 LoggingJob\)/, @logger.messages)
   end
 
+  def test_enqueue_all_graceful_failure_when_enqueued_count_is_nil
+    original_adapter = ActiveJob::Base.queue_adapter
+
+    stubbed_inline_adapter = ActiveJob::QueueAdapters::InlineAdapter.new
+    def stubbed_inline_adapter.respond_to?(method_name, include_private = false)
+      method_name == :enqueue_all || super
+    end
+    def stubbed_inline_adapter.enqueue_all(*)
+      nil
+    end
+
+    ActiveJob::Base.queue_adapter = stubbed_inline_adapter
+
+    ActiveJob.perform_all_later(LoggingJob.new("Dummy"), HelloJob.new("Jamie"), HelloJob.new("John"))
+    assert_match(/Failed enqueuing 3 jobs to .+/, @logger.messages)
+  ensure
+    ActiveJob::Base.queue_adapter = original_adapter
+  end
+
   def test_enqueue_log_level
     @logger.level = WARN
     HelloJob.perform_later "Dummy"