js/src/jit-test/tests/arguments/args-attributes.js@6474c204b198
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.
1 function strictArgs() {
2 return (function (a, b, c) {'use strict'; return arguments; })(1, 2);
3 }
5 function normalArgs() {
6 return (function (a, b, c) { return arguments; })(1, 2);
7 }
9 function checkProperty(options, prop, shouldThrow) {
10 var desc, orig;
11 var obj = options.strict ? strictArgs() : normalArgs();
12 var objType = options.strict ? "strict arguments." : "normal arguments.";
14 function check() {
15 orig = Object.getOwnPropertyDescriptor(obj, prop);
17 var threw = false;
18 try {
19 obj[prop] = obj[prop];
20 }
21 catch (e) {
22 threw = true;
23 }
24 assertEq(threw, shouldThrow, objType + prop + " threw");
26 if (orig === undefined) {
27 // The property wasn't defined, so we can skip it.
28 return;
29 }
31 desc = Object.getOwnPropertyDescriptor(obj, prop);
32 if ("value" in orig) {
33 assertEq(desc.value, orig.value, objType + prop + " value");
34 } else {
35 assertEq(desc.get, orig.get, objType + prop + " get");
36 assertEq(desc.set, orig.set, objType + prop + " set");
37 }
38 assertEq(desc.writable, orig.writable, objType + prop + " writable");
39 assertEq(desc.enumerable, orig.enumerable, objType + prop + " enumerable");
40 assertEq(desc.configurable, orig.configurable, objType + prop + " configurable");
41 }
43 check();
45 if (orig && orig.configurable) {
46 if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
47 Object.defineProperty(obj, prop, {writable: false, enumerable: true});
48 check();
50 if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
51 Object.defineProperty(obj, prop, {writable: true, enumerable: false});
52 check();
54 if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
55 Object.defineProperty(obj, prop, {writable: false, configurable: false});
56 check();
57 }
58 }
60 checkProperty({strict: true, refresh: true}, 'callee', true);
61 checkProperty({strict: true, refresh: false}, 'callee', true);
62 checkProperty({strict: false, refresh: true}, 'callee', false);
63 checkProperty({strict: false, refresh: false}, 'callee', false);
65 checkProperty({strict: true, refresh: true}, 'length', false);
66 checkProperty({strict: true, refresh: false}, 'length', false);
67 checkProperty({strict: false, refresh: true}, 'length', false);
68 checkProperty({strict: false, refresh: false}, 'length', false);
70 for (var i = 0; i <= 5; i++) {
71 checkProperty({strict: true, refresh: true}, "" + i, false);
72 checkProperty({strict: true, refresh: false}, "" + i, false);
73 checkProperty({strict: false, refresh: true}, "" + i, false);
74 checkProperty({strict: false, refresh: false}, "" + i, false);
75 }
