Merge pull request #35 from yui-knk/CaseNode_eqq

Implement `CaseNode#===`

spec/spec_helper.rb

@@ -81,6 +81,14 @@ def ===(other)
   end
 
   class CaseNode
+    prepend Module.new {
+      def ===(other)
+        super(other) &&
+        self.location == other.location &&
+        self.case_keyword_loc == other.case_keyword_loc &&
+        self.end_keyword_loc == other.end_keyword_loc
+      end
+    }
   end
 
   class AndNode