[CHEF-3680] don't invalidate computed attributes on dup

2 files changed, 11 insertions, 1 deletions

diff --git a/lib/chef/node/attribute_collections.rb b/lib/chef/node/attribute_collections.rb
index 5f4728b400..dcbb4601bd 100644
--- a/lib/chef/node/attribute_collections.rb
+++ b/lib/chef/node/attribute_collections.rb
@@ -76,6 +76,10 @@ class Chef
         super(data)
       end
 
+      def dup
+        Array.new(map {|e| e.dup})
+      end
+
     end
 
     # == VividMash
@@ -185,6 +189,10 @@ class Chef
         end
       end
 
+      def dup
+        Mash.new(self)
+      end
+
     end
 
   end
diff --git a/lib/chef/node/immutable_collections.rb b/lib/chef/node/immutable_collections.rb
index 25a653ef74..857365d8d6 100644
--- a/lib/chef/node/immutable_collections.rb
+++ b/lib/chef/node/immutable_collections.rb
@@ -195,8 +195,9 @@ class Chef
       end
 
       def dup
-        Array.new(self)
+        Array.new(map {|e| e.dup })
       end
+
     end
 
     # == ImmutableMash
@@ -381,6 +382,7 @@ class Chef
       def dup
         Mash.new(self)
       end
+
     end
 
   end