Merge pull request #63 from ohrite/dash_default

Fix Hashie::Dash Defaults

2 files changed, 15 insertions, 1 deletions

diff --git a/lib/hashie/dash.rb b/lib/hashie/dash.rb
index 34228c7..bdc256d 100644
--- a/lib/hashie/dash.rb
+++ b/lib/hashie/dash.rb
@@ -90,7 +90,11 @@ module Hashie
       super(&block)
 
       self.class.defaults.each_pair do |prop, value|
-        self[prop] = value
+        self[prop] = begin
+          value.dup
+        rescue TypeError
+          value
+        end
       end
 
       initialize_attributes(attributes)
diff --git a/spec/hashie/dash_spec.rb b/spec/hashie/dash_spec.rb
index 5922a3f..1267651 100644
--- a/spec/hashie/dash_spec.rb
+++ b/spec/hashie/dash_spec.rb
@@ -22,6 +22,10 @@ class Subclassed < DashTest
   property :last_name, :required => true
 end
 
+class DashDefaultTest < Hashie::Dash
+  property :aliases, :default => ["Snake"]
+end
+
 describe DashTest do
 
   subject { DashTest.new(:first_name => 'Bob', :email => 'bob@example.com') }
@@ -120,6 +124,12 @@ describe DashTest do
       expect { DashTest.new }.to raise_error(ArgumentError)
     end
 
+    it "does not overwrite default values" do
+      obj1 = DashDefaultTest.new
+      obj1.aliases << "El Rey"
+      obj2 = DashDefaultTest.new
+      obj2.aliases.should_not include "El Rey"
+    end
   end
 
   describe 'properties' do