merges r24785 and r24833 from trunk into ruby_1_9_1, with small modification.

--
* test/dl/test_{cfunc,ptr}.rb: added tests from Aaron Patterson.
  see [ruby-dev:39249].

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@25591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/test/dl/test_cptr.rb b/test/dl/test_cptr.rb
new file mode 100644
index 000000000..2d6a08e1c
--- /dev/null
+++ b/test/dl/test_cptr.rb
@@ -0,0 +1,18 @@
+require_relative 'test_base'
+
+module DL
+  class TestCPtr < TestBase
+    def test_free
+      ptr = CPtr.malloc(4)
+      assert_nil ptr.free
+    end
+
+    def test_free=
+      free = CFunc.new(@libc['free'], TYPE_VOID, 'free')
+      ptr = CPtr.malloc(4)
+      ptr.free = free
+
+      assert_equal free.ptr, ptr.free.ptr
+    end
+  end
+end