fix the tests for oprerators. Also naming keywords demands change

test/parser/test_root.rb

@@ -12,13 +12,14 @@ end
 
 foo( 3 )
 HERE
-    @parse_output = [
-          {:function_definition=> {  :name=>"foo"}, :parmeter_list => [ {:parmeter=>{:name=>"x"}} ] , 
-                      :expressions=>[{:asignee=>{:name=>"a"}, :asigned=>{:integer=>"5"} } ] } , 
-          {:function_call => { :name => "foo" }, :argument_list => [ { :argument => { :integer => "3" } } ] }]
-    @transform_output = [Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new("x")] , 
-    [Ast::AssignmentExpression.new(Ast::NameExpression.new("a"), Ast::IntegerExpression.new(5))] ), 
-    Ast::FuncallExpression.new("foo", [Ast::IntegerExpression.new(3)] )]
+    @parse_output = [{:function_definition=>{:name=>"foo"}, 
+      :parmeter_list=>[{:parmeter=>{:name=>"x"}}], 
+      :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"5"}}], :end=>"end"}, 
+      {:function_call=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"3"}}]}]
+    @transform_output = [Ast::FunctionExpression.new(:foo, 
+      [Ast::NameExpression.new("x")] , 
+      [Ast::OperatorExpression.new("=", Ast::NameExpression.new("a"),Ast::IntegerExpression.new(5))] ), 
+                        Ast::FuncallExpression.new("foo", [Ast::IntegerExpression.new(3)] )]
 
   end