test_printf.rb: need to be infected

* test/-ext-/test_printf.rb (Test_SPrintf#test_{taint,untrust}): use
  plain object so that the results of to_s and inspect are infected.
  [ruby-dev:46053] [Bug #6881]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36712 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 11 deletions

diff --git a/test/-ext-/test_printf.rb b/test/-ext-/test_printf.rb
index 4c4001654a..4b471ab5d9 100644
--- a/test/-ext-/test_printf.rb
+++ b/test/-ext-/test_printf.rb
@@ -30,24 +30,20 @@ class Test_SPrintf < Test::Unit::TestCase
   end
 
   def test_taint
-    def self.to_s
-      super.taint
-    end
+    obj = Object.new.taint
     assert_equal({to_s: true, inspect: true},
                  {
-                   to_s: Bug::Printf.s(self).tainted?,
-                   inspect: Bug::Printf.v(self).tainted?,
+                   to_s: Bug::Printf.s(obj).tainted?,
+                   inspect: Bug::Printf.v(obj).tainted?,
                  })
   end
 
-  def test_trust
-    def self.to_s
-      super.untrust
-    end
+  def test_untrust
+    obj = Object.new.untrust
     assert_equal({to_s: true, inspect: true},
                  {
-                   to_s: Bug::Printf.s(self).untrusted?,
-                   inspect: Bug::Printf.v(self).untrusted?,
+                   to_s: Bug::Printf.s(obj).untrusted?,
+                   inspect: Bug::Printf.v(obj).untrusted?,
                  })
   end
 end