Enable the claims_tests in mocking mode.

lib/fog/rackspace/queues.rb

@@ -160,7 +160,7 @@ module Fog
 
             claims.keys.dup.each do |id|
               claim = claims[id]
-              if claim.expired?
+              if claim.expired? || claim.messages.empty?
                 claim.messages.each { |m| m.claim = nil }
                 claims.delete(id)
               end

lib/fog/rackspace/requests/queues/delete_message.rb

@@ -38,7 +38,7 @@ module Fog
 
           message = queue.messages.detect { |m| m.id == message_id }
 
-          if message.claimed?
+          if message && message.claimed?
             unless message.claim.id == claim_id
               # FIXME Exception
             end
@@ -48,6 +48,8 @@ module Fog
             end
           end
 
+          queue.messages.reject! { |m| m.id == message_id }
+
           response = Excon::Response.new
           response.status = 204
           response

tests/rackspace/models/queues/claims_tests.rb

@@ -1,7 +1,5 @@
 Shindo.tests('Fog::Rackspace::Queues | claims', ['rackspace']) do
 
-  pending if Fog.mocking?
-
   service = Fog::Rackspace::Queues.new
   queue = service.queues.create({
     :name => "fog_queue_#{Time.now.to_i.to_s}",
@@ -16,7 +14,7 @@ Shindo.tests('Fog::Rackspace::Queues | claims', ['rackspace']) do
   }
 
   begin
-    collection_tests(queue.claims, params, false)
+    collection_tests(queue.claims, params)
 
     tests('creating claims when there are no messages') do