From 93d481d4b49829e37b1f501c7307663c6327dfab Mon Sep 17 00:00:00 2001
From: Tomoyuki Sahara <tsahara@iij.ad.jp>
Date: Wed, 22 Jun 2016 10:29:49 +0900
Subject: update $? when IO object is closed.  closes #58.

---
 test/io.rb | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'test')

diff --git a/test/io.rb b/test/io.rb
index da94360d7..f0f30e3ce 100644
--- a/test/io.rb
+++ b/test/io.rb
@@ -372,6 +372,7 @@ end
 
 assert('IO.popen') do
   begin
+    $? = nil
     io = IO.popen("ls")
     assert_true io.close_on_exec?
     assert_equal Fixnum, io.pid.class
@@ -379,7 +380,13 @@ assert('IO.popen') do
     assert_equal ls.class, String
     assert_include ls, 'AUTHORS'
     assert_include ls, 'mrblib'
+
     io.close
+    if Object.const_defined? :Process
+      assert_true $?.success?
+    else
+      assert_equal 0, $?
+    end
     io.closed?
   rescue NotImplementedError => e
     skip e.message
-- 
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