The Tor Browser / file comparison
comparison: js/src/tests/js1_8_5/extensions/findReferences-01.js
js/src/tests/js1_8_5/extensions/findReferences-01.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:6eca9cfad74b |
|---|---|
| 1 // Any copyright is dedicated to the Public Domain. | |
| 2 // http://creativecommons.org/licenses/publicdomain/ | |
| 3 // Contributor: Jim Blandy | |
| 4 | |
| 5 if (typeof findReferences == "function") { | |
| 6 function C() {} | |
| 7 var o = new C; | |
| 8 o.x = {}; // via ordinary property | |
| 9 o[42] = {}; // via numeric property | |
| 10 o[123456789] = {}; // via ridiculous numeric property | |
| 11 o.myself = o; // self-references should be reported | |
| 12 o.alsoMyself = o; // multiple self-references should all be reported | |
| 13 | |
| 14 assertEq(referencesVia(o, 'type; type_proto', C.prototype), true); | |
| 15 assertEq(referencesVia(o, 'shape; base; parent', this), true); | |
| 16 assertEq(referencesVia(o, 'x', o.x), true); | |
| 17 assertEq(referencesVia(o, 'objectElements[42]', o[42]), true); | |
| 18 assertEq(referencesVia(o, '123456789', o[123456789]), true); | |
| 19 assertEq(referencesVia(o, 'myself', o), true); | |
| 20 assertEq(referencesVia(o, 'alsoMyself', o), true); | |
| 21 | |
| 22 function g() { return 42; } | |
| 23 function s(v) { } | |
| 24 var p = Object.defineProperty({}, 'a', { get:g, set:s }); | |
| 25 assertEq(referencesVia(p, 'shape; base; getter', g), true); | |
| 26 assertEq(referencesVia(p, 'shape; base; setter', s), true); | |
| 27 | |
| 28 // If there are multiple objects with the same shape referring to a getter | |
| 29 // or setter, findReferences should get all of them, even though the shape | |
| 30 // gets 'marked' the first time we visit it. | |
| 31 var q = Object.defineProperty({}, 'a', { get:g, set:s }); | |
| 32 assertEq(referencesVia(p, 'shape; base; getter', g), true); | |
| 33 assertEq(referencesVia(q, 'shape; base; getter', g), true); | |
| 34 | |
| 35 // If we extend each object's shape chain, both should still be able to | |
| 36 // reach the getter, even though the two shapes are each traversed twice. | |
| 37 p.b = 9; | |
| 38 q.b = 9; | |
| 39 assertEq(referencesVia(p, 'shape; parent; base; getter', g), true); | |
| 40 assertEq(referencesVia(q, 'shape; parent; base; getter', g), true); | |
| 41 | |
| 42 // These are really just ordinary own property references. | |
| 43 assertEq(referencesVia(C, 'prototype', Object.getPrototypeOf(o)), true); | |
| 44 assertEq(referencesVia(Object.getPrototypeOf(o), 'constructor', C), true); | |
| 45 | |
| 46 // Dense arrays should work, too. | |
| 47 a = []; | |
| 48 a[1] = o; | |
| 49 assertEq(referencesVia(a, 'objectElements[1]', o), true); | |
| 50 | |
| 51 reportCompare(true, true); | |
| 52 } else { | |
| 53 reportCompare(true, true, "test skipped: findReferences is not a function"); | |
| 54 } |
