call `super` in Dash.inherited method

One should always call `super` when defining the `inherited` method
to support possible implementations in superclasses.

2 files changed, 11 insertions, 0 deletions

diff --git a/lib/hashie/dash.rb b/lib/hashie/dash.rb
index 7b25e50..46f877e 100644
--- a/lib/hashie/dash.rb
+++ b/lib/hashie/dash.rb
@@ -56,6 +56,7 @@ module Hashie
     instance_variable_set('@defaults', {})
 
     def self.inherited(klass)
+      super
       (@subclasses ||= Set.new) << klass
       klass.instance_variable_set('@properties', self.properties.dup)
       klass.instance_variable_set('@defaults', self.defaults.dup)
diff --git a/spec/hashie/dash_spec.rb b/spec/hashie/dash_spec.rb
index 41793de..577bd65 100644
--- a/spec/hashie/dash_spec.rb
+++ b/spec/hashie/dash_spec.rb
@@ -1,5 +1,11 @@
 require 'spec_helper'
 
+Hashie::Hash.class_eval do
+  def self.inherited(klass)
+    klass.instance_variable_set('@inheritance_test', true)
+  end
+end
+
 class DashTest < Hashie::Dash
   property :first_name
   property :email
@@ -143,4 +149,8 @@ describe Subclassed do
     described_class.property?(:last_name).should be_true
   end
   
+  it "didn't override superclass inheritance logic" do
+    described_class.instance_variable_get('@inheritance_test').should be_true
+  end
+  
 end