Merge pull request #1608 from sishen/sishen

MemcacheStore: deserialize the entry reading from local_cache when using 

activesupport/lib/active_support/cache/mem_cache_store.rb

@@ -183,6 +183,14 @@ def deserialize_entry(raw_value)
       # Provide support for raw values in the local cache strategy.
       module LocalCacheWithRaw # :nodoc:
         protected
+          def read_entry(key, options)
+            entry = super
+            if options[:raw] && local_cache && entry
+               entry = deserialize_entry(entry.value)
+            end
+            entry
+          end
+
           def write_entry(key, entry, options) # :nodoc:
             retval = super
             if options[:raw] && local_cache && retval

activesupport/test/caching_test.rb

@@ -636,6 +636,13 @@ def test_raw_values
       assert_equal "2", cache.read("foo")
     end
     
+    def test_raw_values_with_marshal
+      cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+      cache.clear
+      cache.write("foo", Marshal.dump([]))
+      assert_equal [], cache.read("foo")      
+    end
+    
     def test_local_cache_raw_values
       cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
       cache.clear
@@ -644,6 +651,15 @@ def test_local_cache_raw_values
         assert_equal "2", cache.read("foo")
       end
     end
+
+    def test_local_cache_raw_values_with_marshal
+      cache = ActiveSupport::Cache.lookup_store(:mem_cache_store, :raw => true)
+      cache.clear
+      cache.with_local_cache do
+        cache.write("foo", Marshal.dump([]))
+        assert_equal [], cache.read("foo")
+      end
+    end
   end
 end