adding a test to find default regexp nodes.

lib/journey/nodes/node.rb

@@ -53,9 +53,14 @@ class Symbol < Terminal
       attr_accessor :regexp
       alias :symbol :regexp
 
+      DEFAULT_EXP = /[^\.\/\?]+/
       def initialize left
         super
-        @regexp = /[^\.\/\?]+/
+        @regexp = DEFAULT_EXP
+      end
+
+      def default_regexp?
+        regexp == DEFAULT_EXP
       end
     end
 

test/nodes/test_symbol.rb

@@ -0,0 +1,15 @@
+require 'helper'
+
+module Journey
+  module Nodes
+    class TestSymbol < MiniTest::Unit::TestCase
+      def test_default_regexp?
+        sym = Symbol.new nil
+        assert sym.default_regexp?
+
+        sym.regexp = nil
+        refute sym.default_regexp?
+      end
+    end
+  end
+end