akr	2009-01-31 19:15:30 +0900 (Sat, 31 Jan 2009)

  New Revision: 21918

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=21918

  Log:
    add a test.

  Modified files:
    trunk/test/ruby/test_io.rb

Index: test/ruby/test_io.rb
===================================================================
--- test/ruby/test_io.rb	(revision 21917)
+++ test/ruby/test_io.rb	(revision 21918)
@@ -812,6 +812,17 @@
     end
   end
 
+  def test_readpartial_pos
+    mkcdtmpdir {
+      open("foo", "w") {|f| f << "abc" }
+      open("foo") {|f|
+        f.seek(0)
+        assert_equal("ab", f.readpartial(2))
+        assert_equal(2, f.pos)
+      }
+    }
+  end
+
   def test_read
     pipe(proc do |w|
       w.write "foobarbaz"

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