diff --git a/activejob/lib/active_job/test_helper.rb b/activejob/lib/active_job/test_helper.rb
index d18656e398af14671c42dcc6374d88e8b74146dc..c544e8a10fe544d0de722bd5ef9c96994a7cd209 100644
--- a/activejob/lib/active_job/test_helper.rb
+++ b/activejob/lib/active_job/test_helper.rb
@@ -175,9 +175,10 @@ def assert_enqueued_with(args = {}, &_block)
         original_enqueued_jobs = enqueued_jobs.dup
         clear_enqueued_jobs
         args.assert_valid_keys(:job, :args, :at, :queue)
+        serialized_args = serialize_args_for_assertion(args)
         yield
         matching_job = enqueued_jobs.any? do |job|
-          args.all? { |key, value| value == job[key] }
+          serialized_args.all? { |key, value| value == job[key] }
         end
         assert matching_job, "No enqueued job found with #{args}"
       ensure
@@ -195,9 +196,10 @@ def assert_performed_with(args = {}, &_block)
         original_performed_jobs = performed_jobs.dup
         clear_performed_jobs
         args.assert_valid_keys(:job, :args, :at, :queue)
+        serialized_args = serialize_args_for_assertion(args)
         perform_enqueued_jobs { yield }
         matching_job = performed_jobs.any? do |job|
-          args.all? { |key, value| value == job[key] }
+          serialized_args.all? { |key, value| value == job[key] }
         end
         assert matching_job, "No performed job found with #{args}"
       ensure
@@ -239,6 +241,14 @@ def enqueued_jobs_size(only: nil)
             enqueued_jobs.size
           end
         end
+
+        def serialize_args_for_assertion(args)
+          serialized_args = args.dup
+          if job_args = serialized_args.delete(:args)
+            serialized_args[:args] = ActiveJob::Arguments.serialize(job_args)
+          end
+          serialized_args
+        end
     end
   end
 end
diff --git a/activejob/test/cases/test_helper_test.rb b/activejob/test/cases/test_helper_test.rb
index f34638e7d826e2c2bae8f254347203a52d38f689..0a23ae33c403054de3b2737ef69ac9f620467b54 100644
--- a/activejob/test/cases/test_helper_test.rb
+++ b/activejob/test/cases/test_helper_test.rb
@@ -4,6 +4,7 @@
 require 'jobs/hello_job'
 require 'jobs/logging_job'
 require 'jobs/nested_job'
+require 'models/person'
 
 class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs
@@ -175,6 +176,25 @@ def test_assert_enqueued_job_args
       end
     end
   end
+
+  def test_assert_enqueued_job_with_global_id_args
+    ricardo = Person.new(9)
+    assert_enqueued_with(job: HelloJob, args: [ricardo]) do
+      HelloJob.perform_later(ricardo)
+    end
+  end
+
+  def test_assert_enqueued_job_failure_with_global_id_args
+    ricardo = Person.new(9)
+    wilma = Person.new(11)
+    error = assert_raise ActiveSupport::TestCase::Assertion do
+      assert_enqueued_with(job: HelloJob, args: [wilma]) do
+        HelloJob.perform_later(ricardo)
+      end
+    end
+
+    assert_equal "No enqueued job found with {:job=>HelloJob, :args=>[#{wilma.inspect}]}", error.message
+  end
 end
 
 class PerformedJobsTest < ActiveJob::TestCase
@@ -282,4 +302,23 @@ def test_assert_performed_job_failure
       end
     end
   end
+
+  def test_assert_performed_job_with_global_id_args
+    ricardo = Person.new(9)
+    assert_performed_with(job: HelloJob, args: [ricardo]) do
+      HelloJob.perform_later(ricardo)
+    end
+  end
+
+  def test_assert_performed_job_failure_with_global_id_args
+    ricardo = Person.new(9)
+    wilma = Person.new(11)
+    error = assert_raise ActiveSupport::TestCase::Assertion do
+      assert_performed_with(job: HelloJob, args: [wilma]) do
+        HelloJob.perform_later(ricardo)
+      end
+    end
+
+    assert_equal "No performed job found with {:job=>HelloJob, :args=>[#{wilma.inspect}]}", error.message
+  end
 end