Fix Harmony Maps and WeakMaps for undefined values.

test/mjsunit/harmony/collections.js

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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
 //       with the distribution.
@@ skipping 100 matching lines @@
   for (var i = 0; i < keys.length; i++) {
     TestMapping(m, keys[i], new Object);
   }
 }
 TestMapBehavior2(new Map);
 
 
 // Test expected querying behavior of Maps and WeakMaps
 function TestQuery(m) {
   var key = new Object;
-  TestMapping(m, key, 'to-be-present');
-  assertTrue(m.has(key));
-  assertFalse(m.has(new Object));
-  TestMapping(m, key, undefined);
-  assertFalse(m.has(key));
-  assertFalse(m.has(new Object));
+  var values = [ 'x', 0, +Infinity, -Infinity, true, false, null, undefined ];
+  for (var i = 0; i < values.length; i++) {
+    TestMapping(m, key, values[i]);
+    assertTrue(m.has(key));
+    assertFalse(m.has(new Object));
+  }
 }
 TestQuery(new Map);
 TestQuery(new WeakMap);
 
 
 // Test expected deletion behavior of Maps and WeakMaps
 function TestDelete(m) {
   var key = new Object;
   TestMapping(m, key, 'to-be-deleted');
   assertTrue(m.delete(key));
@@ skipping 169 matching lines @@
     }
   }
 }
 TestBogusReceivers(bogusReceiversTestSet);
 
 
 // Stress Test
 // There is a proposed stress-test available at the es-discuss mailing list
 // which cannot be reasonably automated.  Check it out by hand if you like:
 // https://mail.mozilla.org/pipermail/es-discuss/2011-May/014096.html