* ext/dl/handle.c (**) adding documentation

* test/dl/test_handle.rb (test_NEXT) testing the NEXT handle

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25463 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/dl/handle.c

@@ -51,6 +51,12 @@ static const rb_data_type_t dlhandle_data_type = {
     0, dlhandle_free, dlhandle_memsize,
 };
 
+/*
+ * call-seq: close
+ *
+ * Close this DL::Handle.  Calling close more than once will raise a
+ * DL::DLError exception.
+ */
 VALUE
 rb_dlhandle_close(VALUE self)
 {

test/dl/test_handle.rb

@@ -122,5 +122,15 @@ module DL
       handle.disable_close
       assert !handle.close_enabled?, 'close is enabled'
     end
+
+    def test_NEXT
+      handle = DL::Handle::NEXT
+      assert handle['malloc']
+    end
+
+    def test_DEFAULT
+      handle = DL::Handle::DEFAULT
+      assert handle['malloc']
+    end
   end
 end