From c2d7621d8d379980afd0b74870588c1438418fed Mon Sep 17 00:00:00 2001
From: tenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 6 Nov 2009 18:02:30 +0000
Subject: * ext/dl/cptr.c (rb_dlptr_inspect, rb_dlptr_plus, rb_dlptr_minus)  
 documenting +, -, inspect * text/dl/test_cptr.rb (test_minus, test_plus,
 test_inspect) testing   minus, plus, and inspect

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25675 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/dl/test_cptr.rb | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'test/dl')

diff --git a/test/dl/test_cptr.rb b/test/dl/test_cptr.rb
index 3c4b5e6867..43605f84ce 100644
--- a/test/dl/test_cptr.rb
+++ b/test/dl/test_cptr.rb
@@ -3,6 +3,28 @@ require_relative '../ruby/envutil'
 
 module DL
   class TestCPtr < TestBase
+    def test_minus
+      str = "hello world"
+      ptr = CPtr[str]
+      assert_equal ptr.to_s, (ptr + 3 - 3).to_s
+    end
+
+    # TODO: what if the pointer size is 0?  raise an exception? do we care?
+    def test_plus
+      str = "hello world"
+      ptr = CPtr[str]
+      new_str = ptr + 3
+      assert_equal 'lo world', new_str.to_s
+    end
+
+    def test_inspect
+      ptr = CPtr.new(0)
+      inspect = ptr.inspect
+      assert_match(/size=#{ptr.size}/, inspect)
+      assert_match(/free=#{ptr.free}/, inspect)
+      assert_match(/ptr=#{ptr.to_i}/, inspect)
+    end
+
     def test_to_ptr_string
       str = "hello world"
       ptr = CPtr[str]
-- 
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