Index: test/mjsunit/harmony/object-observe.js |
diff --git a/test/mjsunit/harmony/object-observe.js b/test/mjsunit/harmony/object-observe.js |
index 27cf2f964a2a6c4de76859a765377de8727ec950..188c1bb82e07e326257a2a0daf8565edff58e672 100644 |
--- a/test/mjsunit/harmony/object-observe.js |
+++ b/test/mjsunit/harmony/object-observe.js |
@@ -332,3 +332,23 @@ observer.assertCallbackRecords([ |
{ object: obj, name: "1", type: "deleted", oldValue: 10 }, |
{ object: obj, name: "1", type: "new" }, |
]); |
+ |
+// Observing array length (including truncation) |
+reset(); |
+var arr = ['a', 'b', 'c', 'd']; |
+Object.defineProperty(arr, '0', {configurable: false}); |
+Object.defineProperty(arr, '2', {get: function(){}}); |
rossberg
2012/11/08 14:26:22
Perhaps add the case of a non-configurable accesso
adamk
2012/11/08 14:48:01
Done.
|
+Object.observe(arr, observer.callback); |
+arr.length = 2; |
+arr.length = 0; |
+arr.length = 10; |
+Object.deliverChangeRecords(observer.callback); |
+observer.assertCallbackRecords([ |
+ { object: arr, name: '3', type: 'deleted', oldValue: 'd' }, |
+ // TODO(adamk): oldValue should not be present below |
+ { object: arr, name: '2', type: 'deleted', oldValue: undefined }, |
+ { object: arr, name: 'length', type: 'updated', oldValue: 4 }, |
+ { object: arr, name: '1', type: 'deleted', oldValue: 'b' }, |
+ { object: arr, name: 'length', type: 'updated', oldValue: 2 }, |
+ { object: arr, name: 'length', type: 'updated', oldValue: 1 }, |
+]); |