too-many-arguments-constructing-bound-function.js

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/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/

*/

var gTestfile = "too-many-arguments-constructing-bound-function.js";

//-----------------------------------------------------------------------------

var BUGNUMBER = 1303678;

var summary =

  "Don't assert trying to construct a bound function whose bound-target " +

  "construct operation passes more than ARGS_LENGTH_MAX arguments";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

const ARGS_LENGTH_MAX = typeof getMaxArgs === "function"

                      ? getMaxArgs()

                      : 500000;

const halfRoundedDown = Math.floor(ARGS_LENGTH_MAX / 2);

const halfRoundedUp = Math.ceil(ARGS_LENGTH_MAX / 2);

function boundTarget()

  return new Number(arguments.length);

var boundArgs = Array(halfRoundedDown).fill(0);

var boundFunction = boundTarget.bind(null, ...boundArgs);

var additionalArgs = Array(halfRoundedUp + 1).fill(0);

try

  assertEq(new (boundFunction)(...additionalArgs).valueOf(),

           ARGS_LENGTH_MAX + 1);

  // If we reach here, that's fine -- it's okay if ARGS_LENGTH_MAX isn't

  // precisely respected, because there's no specified exact limit.

catch (e)

  assertEq(e instanceof RangeError, true,

           "SpiderMonkey throws RangeError for too many args");

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");