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-rw-r--r--test/ruby/test_io.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 3c5dc76..0c81f4c 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2240,6 +2240,9 @@ class TestIO < Test::Unit::TestCase
assert_raise(Errno::ENOENT, Errno::EINVAL) do
Class.new(IO).binread("|#{EnvUtil.rubybin} -e puts")
end
+ assert_raise(Errno::ESPIPE) do
+ IO.read("|echo foo", 1, 1)
+ end
end
def test_reopen