save some to_s code

test/parfait/test_puti.rb

@@ -0,0 +1,15 @@
+require_relative 'helper'
+
+class TestPutiRT < MiniTest::Test
+  include RuntimeTests
+
+  def test_puti
+    @string_input = <<HERE
+5.puts()
+HERE
+    @stdout = "5"
+    check
+  end
+
+
+end