From 9681409e3691037c11c19052295616454f74c936 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 14 Jul 2009 07:13:11 +0000
Subject: * io.c (rb_io_initialize): check if the descriptor can be accessed  
 in the specified open mode.  [ruby-dev:38571]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24102 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_io.rb | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 69e3666cff..8a5b878f3b 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1379,6 +1379,9 @@ class TestIO < Test::Unit::TestCase
 
     fd = IO.sysopen(t.path, "w")
     assert_kind_of(Integer, fd)
+    %w[r r+ w+ a+].each do |mode|
+      assert_raise(Errno::EINVAL, '[ruby-dev:38571]') {IO.new(fd, mode)}
+    end
     f = IO.new(fd, "w")
     f.write("FOO\n")
     f.close
-- 
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