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
|
load("test-common.js");
try {
var o = {};
Object.defineProperty(o, "foo", { value: 1, writable: false, enumerable: false });
assert(o.foo === 1);
o.foo = 2;
assert(o.foo === 1);
var d = Object.getOwnPropertyDescriptor(o, "foo");
assert(d.configurable === false);
assert(d.enumerable === false);
assert(d.writable === false);
assert(d.value === 1);
Object.defineProperty(o, "bar", { value: "hi", writable: true, enumerable: true });
assert(o.bar === "hi");
o.bar = "ho";
assert(o.bar === "ho");
d = Object.getOwnPropertyDescriptor(o, "bar");
assert(d.configurable === false);
assert(d.enumerable === true);
assert(d.writable === true);
assert(d.value === "ho");
assertThrowsError(() => {
Object.defineProperty(o, "bar", { value: "xx", enumerable: false });
}, {
error: TypeError
});
Object.defineProperty(o, "baz", { value: 9, configurable: true, writable: false });
Object.defineProperty(o, "baz", { configurable: true, writable: true });
d = Object.getOwnPropertyDescriptor(o, "baz");
assert(d.configurable === true);
assert(d.writable === true);
assert(d.value === 9);
console.log("PASS");
} catch (e) {
console.log(e)
}
|
