add a test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28775 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/test/pathname/test_pathname.rb b/test/pathname/test_pathname.rb
index 5dfd9c6e31..6add037d9c 100644
--- a/test/pathname/test_pathname.rb
+++ b/test/pathname/test_pathname.rb
@@ -548,6 +548,20 @@ class TestPathname < Test::Unit::TestCase
     assert_equal(false, Pathname.new("a".freeze).freeze.to_s.frozen?)
   end
 
+  def test_freeze_and_taint
+    obj = Pathname.new("a")
+    obj.freeze
+    assert_equal(false, obj.tainted?)
+    assert_raise(RuntimeError) { obj.taint }
+
+    obj = Pathname.new("a")
+    obj.taint
+    assert_equal(true, obj.tainted?)
+    obj.freeze
+    assert_equal(true, obj.tainted?)
+    assert_nothing_raised { obj.taint }
+  end
+
   def test_to_s
     str = "a"
     obj = Pathname.new(str)