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js/src/jit-test/tests/arguments/args-attributes.js@6474c204b198 (annotated)

js/src/jit-test/tests/arguments/args-attributes.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	function strictArgs() {
michael@0	2	return (function (a, b, c) {'use strict'; return arguments; })(1, 2);
michael@0	3	}
michael@0	4
michael@0	5	function normalArgs() {
michael@0	6	return (function (a, b, c) { return arguments; })(1, 2);
michael@0	7	}
michael@0	8
michael@0	9	function checkProperty(options, prop, shouldThrow) {
michael@0	10	var desc, orig;
michael@0	11	var obj = options.strict ? strictArgs() : normalArgs();
michael@0	12	var objType = options.strict ? "strict arguments." : "normal arguments.";
michael@0	13
michael@0	14	function check() {
michael@0	15	orig = Object.getOwnPropertyDescriptor(obj, prop);
michael@0	16
michael@0	17	var threw = false;
michael@0	18	try {
michael@0	19	obj[prop] = obj[prop];
michael@0	20	}
michael@0	21	catch (e) {
michael@0	22	threw = true;
michael@0	23	}
michael@0	24	assertEq(threw, shouldThrow, objType + prop + " threw");
michael@0	25
michael@0	26	if (orig === undefined) {
michael@0	27	// The property wasn't defined, so we can skip it.
michael@0	28	return;
michael@0	29	}
michael@0	30
michael@0	31	desc = Object.getOwnPropertyDescriptor(obj, prop);
michael@0	32	if ("value" in orig) {
michael@0	33	assertEq(desc.value, orig.value, objType + prop + " value");
michael@0	34	} else {
michael@0	35	assertEq(desc.get, orig.get, objType + prop + " get");
michael@0	36	assertEq(desc.set, orig.set, objType + prop + " set");
michael@0	37	}
michael@0	38	assertEq(desc.writable, orig.writable, objType + prop + " writable");
michael@0	39	assertEq(desc.enumerable, orig.enumerable, objType + prop + " enumerable");
michael@0	40	assertEq(desc.configurable, orig.configurable, objType + prop + " configurable");
michael@0	41	}
michael@0	42
michael@0	43	check();
michael@0	44
michael@0	45	if (orig && orig.configurable) {
michael@0	46	if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
michael@0	47	Object.defineProperty(obj, prop, {writable: false, enumerable: true});
michael@0	48	check();
michael@0	49
michael@0	50	if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
michael@0	51	Object.defineProperty(obj, prop, {writable: true, enumerable: false});
michael@0	52	check();
michael@0	53
michael@0	54	if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
michael@0	55	Object.defineProperty(obj, prop, {writable: false, configurable: false});
michael@0	56	check();
michael@0	57	}
michael@0	58	}
michael@0	59
michael@0	60	checkProperty({strict: true, refresh: true}, 'callee', true);
michael@0	61	checkProperty({strict: true, refresh: false}, 'callee', true);
michael@0	62	checkProperty({strict: false, refresh: true}, 'callee', false);
michael@0	63	checkProperty({strict: false, refresh: false}, 'callee', false);
michael@0	64
michael@0	65	checkProperty({strict: true, refresh: true}, 'length', false);
michael@0	66	checkProperty({strict: true, refresh: false}, 'length', false);
michael@0	67	checkProperty({strict: false, refresh: true}, 'length', false);
michael@0	68	checkProperty({strict: false, refresh: false}, 'length', false);
michael@0	69
michael@0	70	for (var i = 0; i <= 5; i++) {
michael@0	71	checkProperty({strict: true, refresh: true}, "" + i, false);
michael@0	72	checkProperty({strict: true, refresh: false}, "" + i, false);
michael@0	73	checkProperty({strict: false, refresh: true}, "" + i, false);
michael@0	74	checkProperty({strict: false, refresh: false}, "" + i, false);
michael@0	75	}