object-defineproperty.js

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var obj = new Int32Array(2);

obj[0] = 100;

var throws = [

    // Disallow accessors

    {get: undefined},

    {set: undefined},

    {get: undefined, set: undefined},

    {get: function() {}},

    {set: function() {}},

    {get: function() {}, set: function() {}},

    {configurable: false},

    {enumerable: false},

    {writable: false},

    {configurable: false, writable: true},

    {enumerable: false, configurable: false},

    {configurable: false, value: 15}

];

for (var desc of throws) {

    assertThrowsInstanceOf(function() { Object.defineProperty(obj, 0, desc); }, TypeError);

    assertThrowsInstanceOf(function() { Object.defineProperties(obj, {0: desc}); }, TypeError);

Object.defineProperty(obj, 0, {});

Object.defineProperty(obj, 0, {configurable: true});

Object.defineProperty(obj, 0, {enumerable: true});

Object.defineProperty(obj, 0, {writable: true});

assertEq(obj[0], 100);

Object.defineProperty(obj, 0, {configurable: true, value: 15});

assertEq(obj[0], 15);

Object.defineProperty(obj, 0, {enumerable: true, value: 16});

assertEq(obj[0], 16);

Object.defineProperty(obj, 0, {writable: true, value: 17});

assertEq(obj[0], 17);

Object.defineProperty(obj, 0, {value: 18});

assertEq(obj[0], 18);

var desc = Object.getOwnPropertyDescriptor(obj, 0);

assertEq(desc.configurable, true);

assertEq(desc.enumerable, true);

assertEq(desc.writable, true);

assertEq(desc.value, 18);

assertEq('get' in desc, false);

assertEq('set' in desc, false);

Object.defineProperties(obj, {0: {value: 20}, 1: {value: 42}});

assertEq(obj[0], 20);

assertEq(obj[1], 42);

anyTypedArrayConstructors.forEach(constructor => {

    var obj = new constructor(4);

    obj[0] = 100;

    obj[1] = 200;

    for (var v of [20, 300, -10, Math.pow(2, 32), -Math.pow(2, 32), NaN]) {

        Object.defineProperty(obj, 0, {value: v});

        obj[1] = v;

        assertEq(obj[0], obj[1]);

});

reportCompare(true, true, "test");