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js/src/tests/ecma_5/Function/function-caller.js@6474c204b198 (annotated)

js/src/tests/ecma_5/Function/function-caller.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/*
michael@0	2	* Any copyright is dedicated to the Public Domain.
michael@0	3	* http://creativecommons.org/licenses/publicdomain/
michael@0	4	*/
michael@0	5
michael@0	6	var gTestfile = 'function-caller.js';
michael@0	7	var BUGNUMBER = 514581;
michael@0	8	var summary = "Function.prototype.caller should throw a TypeError for " +
michael@0	9	"strict-mode functions";
michael@0	10
michael@0	11	print(BUGNUMBER + ": " + summary);
michael@0	12
michael@0	13	/**************
michael@0	14	* BEGIN TEST *
michael@0	15	**************/
michael@0	16
michael@0	17	// behavior
michael@0	18
michael@0	19	function expectTypeError(fun)
michael@0	20	{
michael@0	21	try
michael@0	22	{
michael@0	23	fun();
michael@0	24	throw new Error("didn't throw");
michael@0	25	}
michael@0	26	catch (e)
michael@0	27	{
michael@0	28	assertEq(e instanceof TypeError, true,
michael@0	29	"expected TypeError calling function" +
michael@0	30	("name" in fun ? " " + fun.name : "") + ", instead got: " + e);
michael@0	31	}
michael@0	32	}
michael@0	33
michael@0	34	function bar() { "use strict"; }
michael@0	35	expectTypeError(function barCaller() { bar.caller; });
michael@0	36
michael@0	37	function baz() { "use strict"; return 17; }
michael@0	38	expectTypeError(function bazCaller() { baz.caller; });
michael@0	39
michael@0	40
michael@0	41	// accessor identity
michael@0	42
michael@0	43	function strictMode() { "use strict"; return 42; }
michael@0	44	var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode, "caller").get;
michael@0	45
michael@0	46	var barCaller = Object.getOwnPropertyDescriptor(bar, "caller");
michael@0	47	assertEq("get" in barCaller, true);
michael@0	48	assertEq("set" in barCaller, true);
michael@0	49	assertEq(barCaller.get, canonicalTTE);
michael@0	50	assertEq(barCaller.set, canonicalTTE);
michael@0	51
michael@0	52	var barArguments = Object.getOwnPropertyDescriptor(bar, "arguments");
michael@0	53	assertEq("get" in barArguments, true);
michael@0	54	assertEq("set" in barArguments, true);
michael@0	55	assertEq(barArguments.get, canonicalTTE);
michael@0	56	assertEq(barArguments.set, canonicalTTE);
michael@0	57
michael@0	58	var bazCaller = Object.getOwnPropertyDescriptor(baz, "caller");
michael@0	59	assertEq("get" in bazCaller, true);
michael@0	60	assertEq("set" in bazCaller, true);
michael@0	61	assertEq(bazCaller.get, canonicalTTE);
michael@0	62	assertEq(bazCaller.set, canonicalTTE);
michael@0	63
michael@0	64	var bazArguments = Object.getOwnPropertyDescriptor(baz, "arguments");
michael@0	65	assertEq("get" in bazArguments, true);
michael@0	66	assertEq("set" in bazArguments, true);
michael@0	67	assertEq(bazArguments.get, canonicalTTE);
michael@0	68	assertEq(bazArguments.set, canonicalTTE);
michael@0	69
michael@0	70
michael@0	71	// [[ThrowTypeError]] characteristics
michael@0	72
michael@0	73	assertEq(Object.prototype.toString.call(canonicalTTE), "[object Function]");
michael@0	74	assertEq(Object.getPrototypeOf(canonicalTTE), Function.prototype);
michael@0	75	assertEq(canonicalTTE.length, 0);
michael@0	76	assertEq(Object.isExtensible(canonicalTTE), false);
michael@0	77	canonicalTTE.lumpy = 17;
michael@0	78	assertEq(canonicalTTE.hasOwnProperty("lumpy"), false);
michael@0	79	assertEq("lumpy" in canonicalTTE, false);
michael@0	80	expectTypeError(function setTTEProp() { "use strict"; canonicalTTE.x = 42; });
michael@0	81
michael@0	82	/******************************************************************************/
michael@0	83
michael@0	84	if (typeof reportCompare === "function")
michael@0	85	reportCompare(true, true);
michael@0	86
michael@0	87	print("All tests passed!");