| // |reftest| skip-if(!xulRuntime.shell) -- needs neuter() |
| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ |
| */ |
| |
| var gTestfile = "TypedArray-subarray-arguments-neutering.js"; |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 991981; |
| var summary = |
| "%TypedArray.prototype.subarray shouldn't misbehave horribly if " + |
| "index-argument conversion neuters the underlying ArrayBuffer"; |
| |
| print(BUGNUMBER + ": " + summary); |
| |
| /************** |
| * BEGIN TEST * |
| **************/ |
| |
| function testBegin(dataType) |
| { |
| var ab = new ArrayBuffer(0x1000); |
| |
| var begin = |
| { |
| valueOf: function() |
| { |
| neuter(ab, dataType); |
| return 0x800; |
| } |
| }; |
| |
| var ta = new Uint8Array(ab); |
| |
| var ok = false; |
| try |
| { |
| ta.subarray(begin); |
| } |
| catch (e) |
| { |
| ok = true; |
| } |
| assertEq(ok, true, "start weirdness should have thrown"); |
| assertEq(ab.byteLength, 0, "neutering should work for start weirdness"); |
| } |
| testBegin("change-data"); |
| testBegin("same-data"); |
| |
| function testBeginWithEnd(dataType) |
| { |
| var ab = new ArrayBuffer(0x1000); |
| |
| var begin = |
| { |
| valueOf: function() |
| { |
| neuter(ab, dataType); |
| return 0x800; |
| } |
| }; |
| |
| var ta = new Uint8Array(ab); |
| |
| var ok = false; |
| try |
| { |
| ta.subarray(begin, 0x1000); |
| } |
| catch (e) |
| { |
| ok = true; |
| } |
| assertEq(ok, true, "start weirdness should have thrown"); |
| assertEq(ab.byteLength, 0, "neutering should work for start weirdness"); |
| } |
| testBeginWithEnd("change-data"); |
| testBeginWithEnd("same-data"); |
| |
| function testEnd(dataType) |
| { |
| var ab = new ArrayBuffer(0x1000); |
| |
| var end = |
| { |
| valueOf: function() |
| { |
| neuter(ab, dataType); |
| return 0x1000; |
| } |
| }; |
| |
| var ta = new Uint8Array(ab); |
| |
| var ok = false; |
| try |
| { |
| ta.subarray(0x800, end); |
| } |
| catch (e) |
| { |
| ok = true; |
| } |
| assertEq(ok, true, "start weirdness should have thrown"); |
| assertEq(ab.byteLength, 0, "neutering should work for start weirdness"); |
| } |
| testEnd("change-data"); |
| testEnd("same-data"); |
| |
| /******************************************************************************/ |
| |
| if (typeof reportCompare === "function") |
| reportCompare(true, true); |
| |
| print("Tests complete"); |