46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
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)
|
|
}
|