src/third_party/mozjs-45/js/src/tests/ecma_6/Symbol/enumeration-order.js

/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/licenses/publicdomain/ */

// Symbols follow all other property keys in the result list.
var log;
function LoggingProxy() {
    return new Proxy({}, {
        defineProperty: (t, key, desc) => {
            log.push(key);
            return true;
        }
    });
}

var keys = [
    "before",
    Symbol(),
    "during",
    Symbol.for("during"),
    Symbol.iterator,
    "after"
];
var descs = {};
for (var k of keys)
    descs[k] = {configurable: true, value: 0};

function test(descsObj) {
    log = [];
    Object.defineProperties(LoggingProxy(), descs);
    assertEq(log.length, keys.length);
    assertDeepEq(log.map(k => typeof k), ["string", "string", "string", "symbol", "symbol", "symbol"]);
    for (var key of keys)
        assertEq(log.indexOf(key) !== -1, true);
}

test(descs);
test(new Proxy(descs, {}));

if (typeof reportCompare === "function")
    reportCompare(0, 0);