Additional functions to Harmony weak maps API.

test/mjsunit/harmony/weakmaps.js

Index: test/mjsunit/harmony/weakmaps.js
diff --git a/test/mjsunit/harmony/weakmaps.js b/test/mjsunit/harmony/weakmaps.js
index 52b022bbd88b862e0afec765e323955a9c308f3d..d98db10df3a91d59f9613833fb205f3b81e5618f 100644
--- a/test/mjsunit/harmony/weakmaps.js
+++ b/test/mjsunit/harmony/weakmaps.js
@@ -32,6 +32,8 @@
 var m = new WeakMap;
 assertDoesNotThrow(function () { m.get(new Object) });
 assertDoesNotThrow(function () { m.set(new Object) });
+assertDoesNotThrow(function () { m.has(new Object) });
+assertDoesNotThrow(function () { m.delete(new Object) });
 
 
 // Test invalid getter and setter calls
@@ -55,6 +57,27 @@ TestMapping(m, new Object, 'the-value');
 TestMapping(m, new Object, new Object);
 
 
+// Test expected querying behavior
+var m = new WeakMap;
+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));
+
+
+// Test expected deletion behavior
+var m = new WeakMap;
+var key = new Object;
+TestMapping(m, key, 'to-be-deleted');
+assertTrue(m.delete(key));
+assertFalse(m.delete(key));
+assertFalse(m.delete(new Object));
+assertSame(m.get(key), undefined);
+
+
 // Test GC of map with entry
 var m = new WeakMap;
 var key = new Object;
@@ -112,6 +135,8 @@ var m = new WeakMap;
 assertTrue(m instanceof WeakMap);
 assertTrue(WeakMap.prototype.set instanceof Function)
 assertTrue(WeakMap.prototype.get instanceof Function)
+assertTrue(WeakMap.prototype.has instanceof Function)
+assertTrue(WeakMap.prototype.delete instanceof Function)
 
 
 // Stress Test