11 files changed, 25 insertions, 14 deletions
diff --git a/activejob/lib/active_job/callbacks.rb b/activejob/lib/active_job/callbacks.rb
index 29e2a878b4..c4ceb484cc 100644
--- a/activejob/lib/active_job/callbacks.rb
+++ b/activejob/lib/active_job/callbacks.rb
@@ -22,6 +22,8 @@ module ActiveJob
       define_callbacks :enqueue
     end
 
+    # These methods will be included into any Active Job object, adding
+    # callbacks for +perform+ and +enqueue+ methods.
     module ClassMethods
       # Defines a callback that will get called right before the
       # job's perform method is executed.
diff --git a/activejob/lib/active_job/core.rb b/activejob/lib/active_job/core.rb
index f55db5a588..a0e55a0028 100644
--- a/activejob/lib/active_job/core.rb
+++ b/activejob/lib/active_job/core.rb
@@ -17,6 +17,8 @@ module ActiveJob
       attr_writer :queue_name
     end
 
+    # These methods will be included into any Active Job object, adding
+    # helpers for de/serialization and creation of job instances.
     module ClassMethods
       # Creates a new job instance from a hash created with +serialize+
       def deserialize(job_data)
@@ -48,8 +50,8 @@ module ActiveJob
       end
     end
 
-    # Creates a new job instance. Takes as arguments the arguments that
-    # will be passed to the perform method.
+    # Creates a new job instance. Takes the arguments that will be
+    # passed to the perform method.
     def initialize(*arguments)
       @arguments  = arguments
       @job_id     = SecureRandom.uuid
@@ -84,6 +86,3 @@ module ActiveJob
       end
   end
 end
-
-
-
diff --git a/activejob/lib/active_job/enqueuing.rb b/activejob/lib/active_job/enqueuing.rb
index cca0a2a8d6..430c17e1bf 100644
--- a/activejob/lib/active_job/enqueuing.rb
+++ b/activejob/lib/active_job/enqueuing.rb
@@ -4,6 +4,7 @@ module ActiveJob
   module Enqueuing
     extend ActiveSupport::Concern
 
+    # Includes the +perform_later+ method for job initialization.
     module ClassMethods
       # Push a job onto the queue. The arguments must be legal JSON types
       # (string, int, float, nil, true, false, hash or array) or
@@ -22,7 +23,7 @@ module ActiveJob
         end
     end
 
-    # Reschedule the job to be re-executed. This is useful in combination
+    # Reschedules the job to be re-executed. This is useful in combination
     # with the +rescue_from+ option. When you rescue an exception from your job
     # you can ask Active Job to retry performing your job.
     #
@@ -37,6 +38,7 @@ module ActiveJob
     #    rescue_from(ErrorLoadingSite) do
     #      retry_job queue: :low_priority
     #    end
+    #
     #    def perform(*args)
     #      # raise ErrorLoadingSite if cannot scrape
     #    end
diff --git a/activejob/lib/active_job/execution.rb b/activejob/lib/active_job/execution.rb
index 7ff857206d..79d232da4a 100644
--- a/activejob/lib/active_job/execution.rb
+++ b/activejob/lib/active_job/execution.rb
@@ -6,6 +6,7 @@ module ActiveJob
     extend ActiveSupport::Concern
     include ActiveSupport::Rescuable
 
+    # Includes methods for executing and performing jobs instantly.
     module ClassMethods
       # Performs the job immediately.
       #
diff --git a/activejob/lib/active_job/gem_version.rb b/activejob/lib/active_job/gem_version.rb
index f80e6563b8..ac364f77d1 100644
--- a/activejob/lib/active_job/gem_version.rb
+++ b/activejob/lib/active_job/gem_version.rb
@@ -8,7 +8,7 @@ module ActiveJob
     MAJOR = 4
     MINOR = 2
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "beta4"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end
diff --git a/activejob/lib/active_job/logging.rb b/activejob/lib/active_job/logging.rb
index 6e703faaa7..21d2fda3ff 100644
--- a/activejob/lib/active_job/logging.rb
+++ b/activejob/lib/active_job/logging.rb
@@ -75,7 +75,7 @@ module ActiveJob
       def perform(event)
         info do
           job = event.payload[:job]
-          "Performed #{job.class.name} from #{queue_name(event)} in #{event.duration.round(2).to_s}ms"
+          "Performed #{job.class.name} from #{queue_name(event)} in #{event.duration.round(2)}ms"
         end
       end
 
diff --git a/activejob/lib/active_job/queue_adapter.rb b/activejob/lib/active_job/queue_adapter.rb
index 4bd28522ab..85d7c44bb8 100644
--- a/activejob/lib/active_job/queue_adapter.rb
+++ b/activejob/lib/active_job/queue_adapter.rb
@@ -2,9 +2,12 @@ require 'active_job/queue_adapters/inline_adapter'
 require 'active_support/core_ext/string/inflections'
 
 module ActiveJob
+  # The <tt>ActionJob::QueueAdapter</tt> module is used to load the 
+  # correct adapter. The default queue adapter is the :inline queue.
   module QueueAdapter #:nodoc:
     extend ActiveSupport::Concern
 
+    # Includes the setter method for changing the active queue adapter.
     module ClassMethods
       mattr_reader(:queue_adapter) { ActiveJob::QueueAdapters::InlineAdapter }
 
diff --git a/activejob/lib/active_job/queue_adapters.rb b/activejob/lib/active_job/queue_adapters.rb
index efbcd3cb3a..f22b0502dc 100644
--- a/activejob/lib/active_job/queue_adapters.rb
+++ b/activejob/lib/active_job/queue_adapters.rb
@@ -13,7 +13,7 @@ module ActiveJob
   # * {Sneakers}[https://github.com/jondot/sneakers]
   # * {Sucker Punch}[https://github.com/brandonhilkert/sucker_punch]
   #
-  # #### Backends Features
+  # === Backends Features
   #
   #   |                   | Async | Queues | Delayed   | Priorities | Timeout | Retries |
   #   |-------------------|-------|--------|-----------|------------|---------|---------|
diff --git a/activejob/lib/active_job/queue_adapters/delayed_job_adapter.rb b/activejob/lib/active_job/queue_adapters/delayed_job_adapter.rb
index 4d27c4fff8..69d9e70de3 100644
--- a/activejob/lib/active_job/queue_adapters/delayed_job_adapter.rb
+++ b/activejob/lib/active_job/queue_adapters/delayed_job_adapter.rb
@@ -6,10 +6,10 @@ module ActiveJob
     #
     # Delayed::Job (or DJ) encapsulates the common pattern of asynchronously
     # executing longer tasks in the background. Although DJ can have many
-    # storage backends one of the most used is based on Active Record.
+    # storage backends, one of the most used is based on Active Record.
     # Read more about Delayed Job {here}[https://github.com/collectiveidea/delayed_job].
     #
-    # To use Delayed Job set the queue_adapter config to +:delayed_job+.
+    # To use Delayed Job, set the queue_adapter config to +:delayed_job+.
     #
     #   Rails.application.config.active_job.queue_adapter = :delayed_job
     class DelayedJobAdapter
diff --git a/activejob/lib/active_job/queue_name.rb b/activejob/lib/active_job/queue_name.rb
index d167617e4e..9ae0345120 100644
--- a/activejob/lib/active_job/queue_name.rb
+++ b/activejob/lib/active_job/queue_name.rb
@@ -2,6 +2,7 @@ module ActiveJob
   module QueueName
     extend ActiveSupport::Concern
 
+    # Includes the ability to override the default queue name and prefix.
     module ClassMethods
       mattr_accessor(:queue_name_prefix)
       mattr_accessor(:default_queue_name) { "default" }
@@ -26,13 +27,16 @@ module ActiveJob
       def queue_name_from_part(part_name) #:nodoc:
         queue_name = part_name || default_queue_name
         name_parts = [queue_name_prefix.presence, queue_name]
-        name_parts.compact.join('_')
+        name_parts.compact.join(queue_name_delimiter)
       end
     end
 
     included do
       class_attribute :queue_name, instance_accessor: false
+      class_attribute :queue_name_delimiter, instance_accessor: false
+
       self.queue_name = default_queue_name
+      self.queue_name_delimiter = '_' # set default delimiter to '_'
     end
 
     # Returns the name of the queue the job will be run on
diff --git a/activejob/lib/active_job/test_helper.rb b/activejob/lib/active_job/test_helper.rb
index ade7a94c9d..bb20d93947 100644
--- a/activejob/lib/active_job/test_helper.rb
+++ b/activejob/lib/active_job/test_helper.rb
@@ -53,7 +53,7 @@ module ActiveJob
         end
       end
 
-      # Assert that no job have been enqueued.
+      # Asserts that no jobs have been enqueued.
       #
       #   def test_jobs
       #     assert_no_enqueued_jobs
@@ -137,7 +137,7 @@ module ActiveJob
 
       # Asserts that the job passed in the block has been enqueued with the given arguments.
       #
-      #   def assert_enqueued_job
+      #   def test_assert_enqueued_with
       #     assert_enqueued_with(job: MyJob, args: [1,2,3], queue: 'low') do
       #       MyJob.perform_later(1,2,3)
       #     end