All private symbols are own symbols

test/mjsunit/harmony/private.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 223 matching lines @@
   for (var i = 1; i < symbols.length; i += 2) {
     Object.defineProperty(obj, symbols[i], {value: i, configurable: true})
   }
 }
 
 
 function TestKeyGet(obj) {
   var obj2 = Object.create(obj)
   for (var i in symbols) {
     assertEquals(i|0, obj[symbols[i]])
-    assertEquals(i|0, obj2[symbols[i]])
+    // Private symbols key own-properties..

[rossberg, 2015/06/15 12:09:11]

Nit: extra period

[wingo, 2015/06/16 07:09:45]

Done.

+    assertEquals(undefined, obj2[symbols[i]])
   }
 }
 
 
 function TestKeyHas() {
   for (var i in symbols) {
     assertTrue(symbols[i] in obj)
     assertTrue(Object.hasOwnProperty.call(obj, symbols[i]))
   }
 }
@@ skipping 90 matching lines @@
   obj[sym] = 1
   freeze(obj)
   obj[sym] = 2
   assertEquals(2, obj[sym])
   assertTrue(delete obj[sym])
   assertEquals(undefined, obj[sym])
 }
 TestSealAndFreeze(Object.seal)
 TestSealAndFreeze(Object.freeze)
 TestSealAndFreeze(Object.preventExtensions)