Adds Airbrake support while continuing backwards compatibility for Ho…

…ptoad. Adds tests for Airbrake.

lib/resque/failure/airbrake.rb

@@ -0,0 +1,17 @@
+begin
+  require 'airbrake'
+rescue LoadError
+  raise "Can't find 'airbrake' gem. Please add it to your Gemfile or install it."
+end
+
+require 'resque/failure/thoughtbot'
+
+module Resque
+  module Failure
+    class Airbrake < Base
+      include Resque::Failure::Thoughtbot
+
+      @klass = ::Airbrake
+    end
+  end
+end

lib/resque/failure/hoptoad.rb

@@ -4,6 +4,8 @@
   raise "Can't find 'hoptoad_notifier' gem. Please add it to your Gemfile or install it."
 end
 
+require 'resque/failure/thoughtbot'
+
 module Resque
   module Failure
     # A Failure backend that sends exceptions raised by jobs to Hoptoad.
@@ -23,26 +25,9 @@ module Failure
     # end
     # For more information see https://github.com/thoughtbot/hoptoad_notifier
     class Hoptoad < Base
-      def self.configure(&block)
-        Resque::Failure.backend = self
-        HoptoadNotifier.configure(&block)
-      end
-
-      def self.count
-        # We can't get the total # of errors from Hoptoad so we fake it
-        # by asking Resque how many errors it has seen.
-        Stat[:failed]
-      end
-
-      def save
-        HoptoadNotifier.notify_or_ignore(exception,
-          :parameters => {
-            :payload_class => payload['class'].to_s,
-            :payload_args => payload['args'].inspect
-          }
-        )
-      end
+      include Resque::Failure::Thoughtbot
 
+      @klass = ::HoptoadNotifier
     end
   end
 end

lib/resque/failure/thoughtbot.rb

@@ -0,0 +1,33 @@
+module Resque
+  module Failure
+    module Thoughtbot
+      def self.included(base)
+        base.extend(ClassMethods)
+      end
+
+      module ClassMethods
+        attr_accessor :klass
+
+        def configure(&block)
+          Resque::Failure.backend = self
+          klass.configure(&block)
+        end
+
+        def count
+          # We can't get the total # of errors from Hoptoad so we fake it
+          # by asking Resque how many errors it has seen.
+          Stat[:failed]
+        end
+      end
+
+      def save
+        self.class.klass.notify_or_ignore(exception,
+          :parameters => {
+            :payload_class => payload['class'].to_s,
+            :payload_args => payload['args'].inspect
+          }
+        )
+      end
+    end
+  end
+end

test/airbrake_test.rb

@@ -0,0 +1,27 @@
+
+require 'test_helper'
+
+begin
+  require 'airbrake'
+rescue LoadError
+  warn "Install airbrake gem to run Airbrake tests."
+end
+
+if defined? Airbrake
+  require 'resque/failure/airbrake'
+  context "Airbrake" do
+    test "should be notified of an error" do
+      exception = StandardError.new("BOOM")
+      worker = Resque::Worker.new(:test)
+      queue = "test"
+      payload = {'class' => Object, 'args' => 66}
+
+      Airbrake.expects(:notify_or_ignore).with(
+        exception,
+        :parameters => {:payload_class => 'Object', :payload_args => '66'})
+
+      backend = Resque::Failure::Airbrake.new(exception, worker, queue, payload)
+      backend.save
+    end
+  end
+end

test/hoptoad_test.rb

@@ -7,6 +7,7 @@
 end
 
 if defined? HoptoadNotifier
+  require 'resque/failure/hoptoad'
   context "Hoptoad" do
     test "should be notified of an error" do
       exception = StandardError.new("BOOM")