diff options
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/extensions/file-mapped-arraybuffers.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/file-mapped-arraybuffers.js b/js/src/tests/non262/extensions/file-mapped-arraybuffers.js new file mode 100644 index 0000000000..d69161554f --- /dev/null +++ b/js/src/tests/non262/extensions/file-mapped-arraybuffers.js @@ -0,0 +1,48 @@ +// |reftest| skip-if(!xulRuntime.shell) +// Any copyright is dedicated to the Public Domain. +// http://creativecommons.org/licenses/publicdomain/ + +function viewToString(view) +{ + return String.fromCharCode.apply(null, view); +} + +function test() { + var filename = "file-mapped-arraybuffers.txt"; + var buffer = createMappedArrayBuffer(filename); + var view = new Uint8Array(buffer); + assertEq(viewToString(view), "01234567abcdefghijkl"); + + var buffer2 = createMappedArrayBuffer(filename, 8); + view = new Uint8Array(buffer2); + assertEq(viewToString(view), "abcdefghijkl"); + + var buffer3 = createMappedArrayBuffer(filename, 0, 8); + view = new Uint8Array(buffer3); + assertEq(viewToString(view), "01234567"); + + // Test detaching during subarray creation. + var nasty = { + valueOf: function () { + print("detaching..."); + serialize(buffer3, [buffer3]); + print("detached"); + return 3000; + } + }; + + var a = new Uint8Array(buffer3); + assertThrowsInstanceOf(() => { + var aa = a.subarray(0, nasty); + for (i = 0; i < 3000; i++) + aa[i] = 17; + }, TypeError); + + // Check that invalid sizes and offsets are caught + assertThrowsInstanceOf(() => createMappedArrayBuffer("empty.txt", 8), RangeError); + assertThrowsInstanceOf(() => createMappedArrayBuffer("empty.txt", 0, 8), Error); +} + +if (getBuildConfiguration()["mapped-array-buffer"]) + test(); +reportCompare(0, 0, 'ok'); |