From 21963f8fa1b3ac5c1896fcc13157fdc70b4d9349 Mon Sep 17 00:00:00 2001
From: Tomoyuki Sahara <tsahara@iij.ad.jp>
Date: Tue, 20 Oct 2015 15:37:05 +0900
Subject: UT for IO#sysseek.

---
 test/io.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test')

diff --git a/test/io.rb b/test/io.rb
index a9bdc3e4f..434607959 100644
--- a/test/io.rb
+++ b/test/io.rb
@@ -426,6 +426,14 @@ assert('IO#close_on_exec') do
   # end
 end
 
+assert('IO#sysseek') do
+  IO.open(IO.sysopen($mrbtest_io_rfname)) do |io|
+    assert_equal 2, io.sysseek(2)
+    assert_equal 5, io.sysseek(3, IO::SEEK_CUR) # 2 + 3 => 5
+    assert_equal $mrbtest_io_msg.size - 4, io.sysseek(-4, IO::SEEK_END)
+  end
+end
+
 assert('`cmd`') do
   assert_equal `echo foo`, "foo\n"
 end
-- 
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