from_surfaces.js - mozsearch

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/ */

// Check superficial features of Array.from.

var desc = Object.getOwnPropertyDescriptor(Array, "from");

assertEq(desc.configurable, true);

assertEq(desc.enumerable, false);

assertEq(desc.writable, true);

assertEq(Array.from.length, 1);

assertThrowsInstanceOf(() => new Array.from(), TypeError);  // not a constructor

if (typeof reportCompare === 'function')

    reportCompare(0, 0);