Mock the Redis connection with the "mock_redis" gem. It allows Resque…

… plugins not to rely on a real Redis server.

Gemfile.lock

@@ -3,11 +3,13 @@ PATH
   specs:
     resque_unit (0.4.0)
       json (>= 1.4.6)
+      mock_redis
 
 GEM
   remote: http://rubygems.org/
   specs:
     json (1.5.3)
+    mock_redis (0.2.0)
     rake (0.8.7)
     shoulda (2.11.3)
 

lib/resque_unit.rb

@@ -8,6 +8,7 @@ module ResqueUnit
 end
 
 require 'test/unit'
+require 'mock_redis'
 require 'resque_unit/helpers'
 require 'resque_unit/resque'
 require 'resque_unit/errors'

lib/resque_unit/resque.rb

@@ -4,6 +4,21 @@ module Resque
   include Helpers
   extend self
 
+  # When Resque tries to configure Redis, it just initialize an instance
+  # of MockRedis.
+  # Not meant to mock the main Resque features, just here for plugins.
+  def redis=(*args)
+    redis
+  end
+
+  # Returns the current Redis mock connection. If none has been created,
+  # will create a new one.
+  # Not meant to mock the main Resque features, just here for plugins.
+  def redis
+    @redis = MockRedis.new unless @redis.is_a?(MockRedis)
+    @redis ||= MockRedis.new
+  end
+
   # Resets all the queues to the empty state. This should be called in
   # your test's +setup+ method until I can figure out a way for it to
   # automatically be called.

resque_unit.gemspec

@@ -14,4 +14,5 @@ spec = Gem::Specification.new do |s|
   s.files = Dir['lib/**/*.rb'] + Dir['test/**/*.rb']
   s.test_files = Dir.glob('test/*_test.rb')
 
+  s.add_dependency "mock_redis" # For Resque plugins
 end

test/resque_unit_test.rb

@@ -457,4 +457,15 @@ def setup
     end
   end
 
+  context "A plugin using Redis" do
+    should "use an instance of MockRedis" do
+      assert_instance_of MockRedis, Resque.redis
+    end
+
+    should "use an instance of MockRedis even if Resque tries to configure Redis" do
+      Resque.redis = 'lol'
+      assert_instance_of MockRedis, Resque.redis
+    end
+  end
+
 end