10 files changed, 45 insertions, 15 deletions
diff --git a/activejob/lib/active_job.rb b/activejob/lib/active_job.rb
index ef92406725..29123170b8 100644
--- a/activejob/lib/active_job.rb
+++ b/activejob/lib/active_job.rb
@@ -30,4 +30,5 @@ module ActiveJob
   extend ActiveSupport::Autoload
 
   autoload :Base
-end
-\ No newline at end of file
+  autoload :QueueAdapters
+end
diff --git a/activejob/lib/active_job/arguments.rb b/activejob/lib/active_job/arguments.rb
index 369e716912..e54f4afbc7 100644
--- a/activejob/lib/active_job/arguments.rb
+++ b/activejob/lib/active_job/arguments.rb
@@ -1,4 +1,7 @@
 module ActiveJob
+  # Raised when an exception is raised during job arguments deserialization.
+  #
+  # Wraps the original exception raised as +original_exception+.
   class DeserializationError < StandardError
     attr_reader :original_exception
 
@@ -9,6 +12,14 @@ module ActiveJob
     end
   end
 
+  # Raised when an unsupported argument type is being set as job argument. We
+  # currently support NilClass, Fixnum, Float, String, TrueClass, FalseClass,
+  # Bignum and object that can be represented as GlobalIDs (ex: Active Record).
+  # Also raised if you set the key for a Hash something else than a string or
+  # a symbol.
+  class SerializationError < ArgumentError
+  end
+
   module Arguments
     extend self
     TYPE_WHITELIST = [ NilClass, Fixnum, Float, String, TrueClass, FalseClass, Bignum ]
@@ -33,7 +44,7 @@ module ActiveJob
         when Hash
           Hash[ argument.map { |key, value| [ serialize_hash_key(key), serialize_argument(value) ] } ]
         else
-          raise "Unsupported argument type: #{argument.class.name}"
+          raise SerializationError.new("Unsupported argument type: #{argument.class.name}")
         end
       end
 
@@ -55,7 +66,7 @@ module ActiveJob
         when String, Symbol
           key.to_s
         else
-          raise "Unsupported hash key type: #{key.class.name}"
+          raise SerializationError.new("Unsupported hash key type: #{key.class.name}")
         end
       end
   end
diff --git a/activejob/lib/active_job/callbacks.rb b/activejob/lib/active_job/callbacks.rb
index af92031bc9..cafa3438c0 100644
--- a/activejob/lib/active_job/callbacks.rb
+++ b/activejob/lib/active_job/callbacks.rb
@@ -3,8 +3,8 @@ require 'active_support/callbacks'
 module ActiveJob
   # = Active Job Callbacks
   #
-  # Active Job provides hooks during the lifecycle of a job. Callbacks allows you to trigger
-  # logic during the lifecycle of a job. Available callbacks:
+  # Active Job provides hooks during the lifecycle of a job. Callbacks allow you
+  # to trigger logic during the lifecycle of a job. Available callbacks are:
   #
   # * <tt>before_enqueue</tt>
   # * <tt>around_enqueue</tt>
diff --git a/activejob/lib/active_job/logging.rb b/activejob/lib/active_job/logging.rb
index d9e544acf5..ae098a80f3 100644
--- a/activejob/lib/active_job/logging.rb
+++ b/activejob/lib/active_job/logging.rb
@@ -52,19 +52,19 @@ module ActiveJob
 
     class LogSubscriber < ActiveSupport::LogSubscriber
       def enqueue(event)
-        info "Enqueued #{event.payload[:job].name} (Job ID: #{event.payload[:job_id]}) to #{queue_name(event)}" + args_info(event)
+        info { "Enqueued #{event.payload[:job].name} (Job ID: #{event.payload[:job_id]}) to #{queue_name(event)}" + args_info(event) }
       end
 
       def enqueue_at(event)
-        info "Enqueued #{event.payload[:job].name} (Job ID: #{event.payload[:job_id]}) to #{queue_name(event)} at #{enqueued_at(event)}" + args_info(event)
+        info { "Enqueued #{event.payload[:job].name} (Job ID: #{event.payload[:job_id]}) to #{queue_name(event)} at #{enqueued_at(event)}" + args_info(event) }
       end
 
       def perform_start(event)
-        info "Performing #{event.payload[:job].name} from #{queue_name(event)}" + args_info(event)
+        info { "Performing #{event.payload[:job].name} from #{queue_name(event)}" + args_info(event) }
       end
 
       def perform(event)
-        info "Performed #{event.payload[:job].name} from #{queue_name(event)} in #{event.duration.round(2).to_s}ms"
+        info { "Performed #{event.payload[:job].name} from #{queue_name(event)} in #{event.duration.round(2).to_s}ms" }
       end
 
       private
diff --git a/activejob/lib/active_job/queue_adapter.rb b/activejob/lib/active_job/queue_adapter.rb
index 8f2f8b86ea..13c23abce4 100644
--- a/activejob/lib/active_job/queue_adapter.rb
+++ b/activejob/lib/active_job/queue_adapter.rb
@@ -17,7 +17,6 @@ module ActiveJob
 
     private
       def load_adapter(name)
-        require "active_job/queue_adapters/#{name}_adapter"
         "ActiveJob::QueueAdapters::#{name.to_s.camelize}Adapter".constantize
       end
   end
diff --git a/activejob/lib/active_job/queue_adapters.rb b/activejob/lib/active_job/queue_adapters.rb
new file mode 100644
index 0000000000..007068ff0a
--- /dev/null
+++ b/activejob/lib/active_job/queue_adapters.rb
@@ -0,0 +1,16 @@
+module ActiveJob
+  module QueueAdapters
+    extend ActiveSupport::Autoload
+
+    autoload :InlineAdapter
+    autoload :BackburnerAdapter
+    autoload :DelayedJobAdapter
+    autoload :QuAdapter
+    autoload :QueAdapter
+    autoload :QueueClassicAdapter
+    autoload :ResqueAdapter
+    autoload :SidekiqAdapter
+    autoload :SneakersAdapter
+    autoload :SuckerPunchAdapter
+  end
+end
diff --git a/activejob/lib/active_job/queue_adapters/backburner_adapter.rb b/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
index 6fe2d4eb53..8ebee36e45 100644
--- a/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
+++ b/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
@@ -9,7 +9,8 @@ module ActiveJob
         end
 
         def enqueue_at(job, timestamp, *args)
-          raise NotImplementedError
+          delay = timestamp - Time.current.to_f
+          Backburner::Worker.enqueue JobWrapper, [ job.name, *args ], queue: job.queue_name, delay: delay
         end
       end
 
diff --git a/activejob/lib/active_job/queue_adapters/que_adapter.rb b/activejob/lib/active_job/queue_adapters/que_adapter.rb
index 0b87deb4e0..9c84c74f83 100644
--- a/activejob/lib/active_job/queue_adapters/que_adapter.rb
+++ b/activejob/lib/active_job/queue_adapters/que_adapter.rb
@@ -9,7 +9,7 @@ module ActiveJob
         end
 
         def enqueue_at(job, timestamp, *args)
-          raise NotImplementedError
+          JobWrapper.enqueue job.name, *args, queue: job.queue_name, run_at: Time.at(timestamp)
         end
       end
 
diff --git a/activejob/lib/active_job/version.rb b/activejob/lib/active_job/version.rb
index 7e646fa3c4..971ba9fe0c 100644
--- a/activejob/lib/active_job/version.rb
+++ b/activejob/lib/active_job/version.rb
@@ -1,7 +1,7 @@
 require_relative 'gem_version'
 
 module ActiveJob
-  # Returns the version of the currently loaded ActiveJob as a <tt>Gem::Version</tt>
+  # Returns the version of the currently loaded Active Job as a <tt>Gem::Version</tt>
   def self.version
     gem_version
   end
diff --git a/activejob/lib/rails/generators/job/job_generator.rb b/activejob/lib/rails/generators/job/job_generator.rb
index 78a9c27606..979ffcb748 100644
--- a/activejob/lib/rails/generators/job/job_generator.rb
+++ b/activejob/lib/rails/generators/job/job_generator.rb
@@ -7,12 +7,14 @@ module Rails
 
       class_option :queue, type: :string, default: 'default', desc: 'The queue name for the generated job'
 
+      check_class_collision suffix: 'Job'
+
+      hook_for :test_framework
+
       def self.default_generator_root
         File.dirname(__FILE__)
       end
 
-      check_class_collision suffix: 'Job'
-
       def create_job_file
         template 'job.rb', File.join('app/jobs', class_path, "#{file_name}_job.rb")
       end