The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/js1_8_5/extensions/file-mapped-arraybuffers.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,40 @@
     1.4 +// |reftest| skip-if(!xulRuntime.shell)
     1.5 +// Any copyright is dedicated to the Public Domain.
     1.6 +// http://creativecommons.org/licenses/publicdomain/
     1.7 +
     1.8 +function viewToString(view)
     1.9 +{
    1.10 +  return String.fromCharCode.apply(null, view);
    1.11 +}
    1.12 +
    1.13 +function assertThrows(f, wantException)
    1.14 +{
    1.15 +    try {
    1.16 +      f();
    1.17 +      assertEq(true, false, "expected " + wantException + " exception");
    1.18 +    } catch (e) {
    1.19 +      assertEq(e.name, wantException.name, e.toString());
    1.20 +    }
    1.21 +}
    1.22 +
    1.23 +function test() {
    1.24 +    var filename = "file-mapped-arraybuffers.txt";
    1.25 +    var buffer = createMappedArrayBuffer(filename);
    1.26 +    var view = new Uint8Array(buffer);
    1.27 +    assertEq(viewToString(view), "01234567abcdefghijkl");
    1.28 +
    1.29 +    var buffer2 = createMappedArrayBuffer(filename, 8);
    1.30 +    view = new Uint8Array(buffer2);
    1.31 +    assertEq(viewToString(view), "abcdefghijkl");
    1.32 +
    1.33 +    var buffer3 = createMappedArrayBuffer(filename, 0, 8);
    1.34 +    view = new Uint8Array(buffer3);
    1.35 +    assertEq(viewToString(view), "01234567");
    1.36 +
    1.37 +    // Check that invalid sizes and offsets are caught
    1.38 +    assertThrows(() => createMappedArrayBuffer("empty.txt", 8), RangeError);
    1.39 +    assertThrows(() => createMappedArrayBuffer("empty.txt", 0, 8), Error);
    1.40 +}
    1.41 +
    1.42 +test();
    1.43 +reportCompare(0, 0, 'ok');