* test/ruby/test_io.rb (test_binmode_after_closed): test for [ruby-core:25363].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24752 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index ab893dbfd8..7a0ecc0cf1 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1463,4 +1463,10 @@ class TestIO < Test::Unit::TestCase
     assert(File.read(t.path, 4).tainted?, '[ruby-dev:38826]')
     assert(File.open(t.path) {|f| f.read(4)}.tainted?, '[ruby-dev:38826]')
   end
+
+  def test_binmode_after_closed
+    t = make_tempfile
+    t.close
+    assert_raise(IOError) {t.binmode}
+  end
 end