enumeration.js - mozsearch

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// |reftest| skip-if(!this.hasOwnProperty("Record"))

var rec = #{ x: 1, y: 2, a: 3 };

var keys = Object.keys(rec);

assertEq(keys.length, 3);

assertEq(keys[0], "a");

assertEq(keys[1], "x");

assertEq(keys[2], "y");

var values = Object.values(rec);

assertEq(values.length, 3);

assertEq(values[0], 3);

assertEq(values[1], 1);

assertEq(values[2], 2);

var entries = Object.entries(rec);

assertEq(entries.length, 3);

assertEq(entries[0][0], "a");

assertEq(entries[0][1], 3);

assertEq(entries[1][0], "x");

assertEq(entries[1][1], 1);

assertEq(entries[2][0], "y");

assertEq(entries[2][1], 2);

var ownKeys = Reflect.ownKeys(Object(rec));

assertEq(ownKeys.length, 3);

assertEq(ownKeys[0], "a");

assertEq(ownKeys[1], "x");

assertEq(ownKeys[2], "y");

var spreadKeys = Object.keys({ ...rec });

assertEq(spreadKeys.length, 3);

assertEq(spreadKeys[0], "a");

assertEq(spreadKeys[1], "x");

assertEq(spreadKeys[2], "y");

var spreadKeysObj = Object.keys({ ...Object(rec) });

assertEq(spreadKeysObj.length, 3);

assertEq(spreadKeysObj[0], "a");

assertEq(spreadKeysObj[1], "x");

assertEq(spreadKeysObj[2], "y");

var i = 0;

for (var key in rec) {

  switch (i++) {

	case 0: assertEq(key, "a"); break;

	case 1: assertEq(key, "x"); break;

	case 2: assertEq(key, "y"); break;

	default: assertUnreachable();

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