The Tor Browser / file comparison
comparison: js/src/tests/js1_8_5/extensions/clone-transferables.js
js/src/tests/js1_8_5/extensions/clone-transferables.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:9d1da6c6b7a4 |
|---|---|
| 1 // |reftest| skip-if(!xulRuntime.shell) | |
| 2 // Any copyright is dedicated to the Public Domain. | |
| 3 // http://creativecommons.org/licenses/publicdomain/ | |
| 4 | |
| 5 function test() { | |
| 6 // Note: -8 and -200 will trigger asm.js link failures because 8 and 200 | |
| 7 // bytes are below the minimum allowed size, and the buffer will not | |
| 8 // actually be converted to an asm.js buffer. | |
| 9 for (var size of [0, 8, 16, 200, 1000, 4096, -8, -200, -8192, -65536]) { | |
| 10 var buffer_ctor = (size < 0) ? AsmJSArrayBuffer : ArrayBuffer; | |
| 11 size = Math.abs(size); | |
| 12 | |
| 13 var old = new buffer_ctor(size); | |
| 14 var copy = deserialize(serialize(old, [old])); | |
| 15 assertEq(old.byteLength, 0); | |
| 16 assertEq(copy.byteLength, size); | |
| 17 | |
| 18 var constructors = [ Int8Array, | |
| 19 Uint8Array, | |
| 20 Int16Array, | |
| 21 Uint16Array, | |
| 22 Int32Array, | |
| 23 Uint32Array, | |
| 24 Float32Array, | |
| 25 Float64Array, | |
| 26 Uint8ClampedArray ]; | |
| 27 | |
| 28 for (var ctor of constructors) { | |
| 29 var buf = new buffer_ctor(size); | |
| 30 var old_arr = new ctor(buf); | |
| 31 assertEq(buf.byteLength, size); | |
| 32 assertEq(buf, old_arr.buffer); | |
| 33 assertEq(old_arr.length, size / old_arr.BYTES_PER_ELEMENT); | |
| 34 | |
| 35 var copy_arr = deserialize(serialize(old_arr, [ buf ])); | |
| 36 assertEq(buf.byteLength, 0, "donor array buffer should be neutered"); | |
| 37 assertEq(old_arr.length, 0, "donor typed array should be neutered"); | |
| 38 assertEq(copy_arr.buffer.byteLength == size, true); | |
| 39 assertEq(copy_arr.length, size / old_arr.BYTES_PER_ELEMENT); | |
| 40 | |
| 41 buf = null; | |
| 42 old_arr = null; | |
| 43 gc(); // Tickle the ArrayBuffer -> view management | |
| 44 } | |
| 45 | |
| 46 for (var ctor of constructors) { | |
| 47 var buf = new buffer_ctor(size); | |
| 48 var old_arr = new ctor(buf); | |
| 49 var dv = new DataView(buf); // Second view | |
| 50 var copy_arr = deserialize(serialize(old_arr, [ buf ])); | |
| 51 assertEq(buf.byteLength, 0, "donor array buffer should be neutered"); | |
| 52 assertEq(old_arr.length, 0, "donor typed array should be neutered"); | |
| 53 assertEq(dv.byteLength, 0, "all views of donor array buffer should be neutered"); | |
| 54 | |
| 55 buf = null; | |
| 56 old_arr = null; | |
| 57 gc(); // Tickle the ArrayBuffer -> view management | |
| 58 } | |
| 59 | |
| 60 // Mutate the buffer during the clone operation. The modifications should be visible. | |
| 61 if (size >= 4) { | |
| 62 old = new buffer_ctor(size); | |
| 63 var view = new Int32Array(old); | |
| 64 view[0] = 1; | |
| 65 var mutator = { get foo() { view[0] = 2; } }; | |
| 66 var copy = deserialize(serialize([ old, mutator ], [old])); | |
| 67 var viewCopy = new Int32Array(copy[0]); | |
| 68 assertEq(view.length, 0); // Neutered | |
| 69 assertEq(viewCopy[0], 2); | |
| 70 } | |
| 71 | |
| 72 // Neuter the buffer during the clone operation. Should throw an exception. | |
| 73 if (size >= 4) { | |
| 74 old = new buffer_ctor(size); | |
| 75 var mutator = { | |
| 76 get foo() { | |
| 77 deserialize(serialize(old, [old])); | |
| 78 } | |
| 79 }; | |
| 80 // The throw is not yet implemented, bug 919259. | |
| 81 //var copy = deserialize(serialize([ old, mutator ], [old])); | |
| 82 } | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 test(); | |
| 87 reportCompare(0, 0, 'ok'); |
