diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/ruby/test_io.rb | 3 |
1 files changed, 3 insertions, 0 deletions
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 |