rename test vars to input and output

test/roots/test_return.rb

@@ -5,21 +5,21 @@ class RootTestReturn < MiniTest::Test
   include ParserHelper
     
   def test_return_int
-    @string_input = 'return 42'
+    @input = 'return 42'
     @parse_output = {:expression_list=>[{:name=>"return"}, {:integer=>"42"}]}
-    @transform_output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::IntegerExpression.new(42)])
+    @output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::IntegerExpression.new(42)])
   end
 
   def test_return_variable
-    @string_input = 'return foo'
+    @input = 'return foo'
     @parse_output = {:expression_list=>[{:name=>"return"}, {:name=>"foo"}]}
-    @transform_output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::NameExpression.new(:foo)])
+    @output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::NameExpression.new(:foo)])
   end
 
   def test_return_string
-    @string_input    = 'return "hello"'
+    @input    = 'return "hello"'
     @parse_output = {:expression_list=>[{:name=>"return"}, {:string=>[{:char=>"h"}, {:char=>"e"}, {:char=>"l"}, {:char=>"l"}, {:char=>"o"}]}]}
-    @transform_output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::StringExpression.new("hello")])
+    @output = Ast::ExpressionList.new( [Ast::NameExpression.new(:return),Ast::StringExpression.new("hello")])
   end
 
 end