From 73768d54d3af644dab3dc3a5fd12aa75961f3c28 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 15 Dec 2011 08:57:01 +0000
Subject: * io.c (argf_type): make typed data.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34055 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/objspace/test_objspace.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test')

diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index 3c22dae551..345b00f737 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -1,5 +1,6 @@
 require "test/unit"
 require "objspace"
+require_relative "../ruby/envutil"
 
 class TestObjSpace < Test::Unit::TestCase
   def test_memsize_of
@@ -23,6 +24,17 @@ class TestObjSpace < Test::Unit::TestCase
                     ObjectSpace.memsize_of(//.match("")))
   end
 
+  def test_argf_memsize
+    size = ObjectSpace.memsize_of(ARGF)
+    assert_kind_of(Integer, size)
+    assert_operator(size, :>, 0)
+    argf = ARGF.dup
+    argf.inplace_mode = nil
+    size = ObjectSpace.memsize_of(argf)
+    argf.inplace_mode = "inplace_mode_suffix"
+    assert_equal(size + 20, ObjectSpace.memsize_of(argf))
+  end
+
   def test_memsize_of_all
     assert_kind_of(Integer, a = ObjectSpace.memsize_of_all)
     assert_kind_of(Integer, b = ObjectSpace.memsize_of_all(String))
-- 
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