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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);
Object.defineProperty(o, 2, { get() { return 10; } });
assert(o[2] === 10);
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);
Object.defineProperty(o, "qux", {
configurable: true,
get() {
return o.secret_qux + 1;
},
set(value) {
this.secret_qux = value + 1;
},
});
o.qux = 10;
assert(o.qux === 12);
o.qux = 20;
assert(o.qux = 22);
Object.defineProperty(o, "qux", { configurable: true, value: 4 });
assert(o.qux === 4);
o.qux = 5;
assert(o.qux = 4);
Object.defineProperty(o, "qux", {
configurable: false,
get() {
return this.secret_qux + 2;
},
set(value) {
o.secret_qux = value + 2;
},
});
o.qux = 10;
assert(o.qux === 14);
o.qux = 20;
assert(o.qux = 24);
assertThrowsError(() => {
Object.defineProperty(o, "qux", {
configurable: false,
get() {
return this.secret_qux + 2;
},
});
}, {
error: TypeError,
message: "Cannot change attributes of non-configurable property 'qux'",
});
assertThrowsError(() => {
Object.defineProperty(o, "qux", { value: 2 });
}, {
error: TypeError,
message: "Cannot change attributes of non-configurable property 'qux'",
});
assertThrowsError(() => {
Object.defineProperty(o, "a", {
get() {},
value: 9,
});
}, {
error: TypeError,
message: "Accessor property descriptor cannot specify a value or writable key",
});
assertThrowsError(() => {
Object.defineProperty(o, "a", {
set() {},
writable: true,
});
}, {
error: TypeError,
message: "Accessor property descriptor cannot specify a value or writable key",
});
console.log("PASS");
} catch (e) {
console.log(e)
}
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