1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// WeakMap surfaces
var desc = Object.getOwnPropertyDescriptor(this, "WeakMap");
assertEq(desc.enumerable, false);
assertEq(desc.configurable, true);
assertEq(desc.writable, true);
assertEq(typeof WeakMap, 'function');
assertEq(Object.keys(WeakMap).length, 0);
assertEq(WeakMap.length, 0);
assertEq(WeakMap.name, "WeakMap");
assertEq(Object.getPrototypeOf(WeakMap.prototype), Object.prototype);
assertEq(Object.prototype.toString.call(WeakMap.prototype), "[object WeakMap]");
assertEq(Object.prototype.toString.call(new WeakMap()), "[object WeakMap]");
assertEq(Object.keys(WeakMap.prototype).join(), "");
assertEq(WeakMap.prototype.constructor, WeakMap);
function checkMethod(name, arity) {
var desc = Object.getOwnPropertyDescriptor(WeakMap.prototype, name);
assertEq(desc.enumerable, false);
assertEq(desc.configurable, true);
assertEq(desc.writable, true);
assertEq(typeof desc.value, 'function');
assertEq(desc.value.name, name);
assertEq(desc.value.length, arity);
}
checkMethod("get", 1);
checkMethod("has", 1);
checkMethod("set", 2);
checkMethod("delete", 1);
|
