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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Set surfaces
load(libdir + "iteration.js");
var desc = Object.getOwnPropertyDescriptor(this, "Set");
assertEq(desc.enumerable, false);
assertEq(desc.configurable, true);
assertEq(desc.writable, true);
assertEq(typeof Set, 'function');
assertEq(Object.keys(Set).length, 0);
assertEq(Set.length, 0);
assertEq(Set.name, "Set");
assertEq(Object.getPrototypeOf(Set.prototype), Object.prototype);
assertEq(Object.prototype.toString.call(Set.prototype), "[object Set]");
assertEq(Object.prototype.toString.call(new Set()), "[object Set]");
assertEq(Object.keys(Set.prototype).join(), "");
assertEq(Set.prototype.constructor, Set);
function checkMethod(name, arity) {
var desc = Object.getOwnPropertyDescriptor(Set.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("has", 1);
checkMethod("add", 1);
checkMethod("delete", 1);
checkMethod("values", 0);
checkMethod("entries", 0);
var desc = Object.getOwnPropertyDescriptor(Set.prototype, "size");
assertEq(desc.enumerable, false);
assertEq(desc.configurable, true);
assertEq(typeof desc.get, 'function');
assertEq(desc.get.length, 0);
assertEq(desc.set, undefined);
checkMethod("clear", 0);
// Set.prototype.keys, .values, and .iterator are the same function object
assertEq(Set.prototype.keys, Set.prototype.values);
assertEq(Set.prototype[Symbol.iterator], Set.prototype.values);
|
