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-rw-r--r--test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb32
1 files changed, 32 insertions, 0 deletions
diff --git a/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb b/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
new file mode 100644
index 0000000000..76ef68002a
--- /dev/null
+++ b/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
@@ -0,0 +1,32 @@
+require 'test/unit'
+
+class TestWaitForSingleFD < Test::Unit::TestCase
+ require '-test-/wait_for_single_fd/wait_for_single_fd'
+
+ def with_pipe
+ r, w = IO.pipe
+ begin
+ yield r, w
+ ensure
+ r.close unless r.closed?
+ w.close unless w.closed?
+ end
+ end
+
+ def test_wait_for_valid_fd
+ with_pipe do |r,w|
+ rc = IO.wait_for_single_fd(w.fileno, RB_WAITFD_OUT, nil)
+ assert_equal RB_WAITFD_OUT, rc
+ end
+ end
+
+ def test_wait_for_invalid_fd
+ with_pipe do |r,w|
+ wfd = w.fileno
+ w.close
+ assert_raises(Errno::EBADF) do
+ IO.wait_for_single_fd(wfd, RB_WAITFD_OUT, nil)
+ end
+ end
+ end
+end