Allow call `assert_enqueued_with` and `assert_enqueued_email_with` with no block

Example of `assert_enqueued_with` with no block
```ruby
def test_assert_enqueued_with
  MyJob.perform_later(1,2,3)
  assert_enqueued_with(job: MyJob, args: [1,2,3], queue: 'low')

  MyJob.set(wait_until: Date.tomorrow.noon).perform_later
  assert_enqueued_with(job: MyJob, at: Date.tomorrow.noon)
end
```

Example of `assert_enqueued_email_with` with no block:
```ruby
def test_email
  ContactMailer.welcome.deliver_later
  assert_enqueued_email_with ContactMailer, :welcome
end

def test_email_with_arguments
  ContactMailer.welcome("Hello", "Goodbye").deliver_later
  assert_enqueued_email_with ContactMailer, :welcome, args: ["Hello", "Goodbye"]
end
```

Related to #33243

1 files changed, 25 insertions, 5 deletions

diff --git a/activejob/lib/active_job/test_helper.rb b/activejob/lib/active_job/test_helper.rb
index 1cd2c40c15..0a9ca3a814 100644
--- a/activejob/lib/active_job/test_helper.rb
+++ b/activejob/lib/active_job/test_helper.rb
@@ -286,7 +286,18 @@ module ActiveJob
       assert_performed_jobs 0, only: only, except: except, &block
     end
 
-    # Asserts that the job passed in the block has been enqueued with the given arguments.
+    # Asserts that the job has been enqueued with the given arguments.
+    #
+    #   def test_assert_enqueued_with
+    #     MyJob.perform_later(1,2,3)
+    #     assert_enqueued_with(job: MyJob, args: [1,2,3], queue: 'low')
+    #
+    #     MyJob.set(wait_until: Date.tomorrow.noon).perform_later
+    #     assert_enqueued_with(job: MyJob, at: Date.tomorrow.noon)
+    #   end
+    #
+    # If a block is passed, that block should cause the job to be
+    # enqueued with the given arguments.
     #
     #   def test_assert_enqueued_with
     #     assert_enqueued_with(job: MyJob, args: [1,2,3], queue: 'low') do
@@ -298,14 +309,23 @@ module ActiveJob
     #     end
     #   end
     def assert_enqueued_with(job: nil, args: nil, at: nil, queue: nil)
-      original_enqueued_jobs_count = enqueued_jobs.count
       expected = { job: job, args: args, at: at, queue: queue }.compact
       serialized_args = serialize_args_for_assertion(expected)
-      yield
-      in_block_jobs = enqueued_jobs.drop(original_enqueued_jobs_count)
-      matching_job = in_block_jobs.find do |in_block_job|
+
+      if block_given?
+        original_enqueued_jobs_count = enqueued_jobs.count
+
+        yield
+
+        jobs = enqueued_jobs.drop(original_enqueued_jobs_count)
+      else
+        jobs = enqueued_jobs
+      end
+
+      matching_job = jobs.find do |in_block_job|
         serialized_args.all? { |key, value| value == in_block_job[key] }
       end
+
       assert matching_job, "No enqueued job found with #{expected}"
       instantiate_job(matching_job)
     end