lib/structure/double.rb in structure-1.0.2 vs lib/structure/double.rb in structure-1.0.3

@@ -13,10 +13,17 @@
       end
 
       klass.module_eval do
         def initialize(data = {})
           data.each do |key, value|
-            value.freeze unless value.is_a?(Structure)
+            unless value.is_a?(Structure) ||
+                   (
+                      defined?(RSpec::Mocks::Double) &&
+                      value.is_a?(RSpec::Mocks::Double)
+                    )
+              value.freeze
+            end
+
             instance_variable_set(:"@#{key}", value)
           end
         end
 
         attribute_names.each do |name|