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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/ */
// Reflect.ownKeys(obj) returns an array of an object's own property keys.
// Test that Reflect.ownKeys gets the expected result when applied to various
// objects. (These tests also check the basics: that the result is an array,
// that its prototype is correct, etc.)
var sym = Symbol.for("comet");
var sym2 = Symbol.for("meteor");
var cases = [
{object: {z: 3, y: 2, x: 1},
keys: ["z", "y", "x"]},
{object: [],
keys: ["length"]},
{object: new Int8Array(4),
keys: ["0", "1", "2", "3"]},
{object: new Proxy({a: 7}, {}),
keys: ["a"]},
{object: {[sym]: "ok"},
keys: [sym]},
{object: {[sym]: 0, // test 9.1.12 ordering
"str": 0,
"773": 0,
"0": 0,
[sym2]: 0,
"-1": 0,
"8": 0,
"second str": 0},
keys: ["0", "8", "773", // indexes in numeric order
"str", "-1", "second str", // strings in insertion order
sym, sym2]}, // symbols in insertion order
{object: newGlobal().Math, // cross-compartment wrapper
keys: Reflect.ownKeys(Math)}
];
for (var {object, keys} of cases)
assertDeepEq(Reflect.ownKeys(object), keys);
// Reflect.ownKeys() creates a new array each time it is called.
var object = {}, keys = [];
for (var i = 0; i < 3; i++) {
var newKeys = Reflect.ownKeys(object);
assertEq(newKeys !== keys, true);
keys = newKeys;
}
// Proxy behavior with successful ownKeys() handler
keys = ["str", "0"];
obj = {};
proxy = new Proxy(obj, {
ownKeys() { return keys; }
});
var actual = Reflect.ownKeys(proxy);
assertDeepEq(actual, keys); // we get correct answers
assertEq(actual !== keys, true); // but not the same object
// If a proxy breaks invariants, a TypeError is thrown.
var obj = Object.preventExtensions({});
var proxy = new Proxy(obj, {
ownKeys() { return ["something"]; }
});
assertThrowsInstanceOf(() => Reflect.ownKeys(proxy), TypeError);
// For more Reflect.ownKeys tests, see target.js.
reportCompare(0, 0);
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