builtin-function-arguments-caller.js

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/*

 * Any copyright is dedicated to the Public Domain.

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

*/

var gTestfile = 'builtin-function-arguments-caller.js';

var BUGNUMBER = 929642;

var summary =

  "Built-in functions defined in ECMAScript pick up arguments/caller " +

  "properties from Function.prototype";

print(BUGNUMBER + ": " + summary);

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

 * BEGIN TEST *

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

function expectNoProperty(obj, prop)

  var desc = Object.getOwnPropertyDescriptor(obj, prop);

  assertEq(desc, undefined,

           "should be no '" + prop + "' property on " + obj);

// Test a builtin that's native.

expectNoProperty(Object, "arguments");

expectNoProperty(Object, "caller");

// Also test a builtin that's self-hosted.

expectNoProperty(Array.prototype.indexOf, "arguments");

expectNoProperty(Array.prototype.indexOf, "caller");

// Test the Function construct for good measure, because it's so intricately

// invovled in bootstrapping.

expectNoProperty(Function, "arguments");

expectNoProperty(Function, "caller");

var argsDesc = Object.getOwnPropertyDescriptor(Function.prototype, "arguments");

var callerDesc = Object.getOwnPropertyDescriptor(Function.prototype, "caller");

var argsGet = argsDesc.get, argsSet = argsDesc.set;

expectNoProperty(argsGet, "arguments");

expectNoProperty(argsGet, "caller");

expectNoProperty(argsSet, "arguments");

expectNoProperty(argsSet, "caller");

var callerGet = callerDesc.get, callerSet = callerDesc.set;

expectNoProperty(callerGet, "arguments");

expectNoProperty(callerGet, "caller");

expectNoProperty(callerSet, "arguments");

expectNoProperty(callerSet, "caller");

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

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");