The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/basic/testArrayBufferSlice.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,57 @@
     1.4 +function testSlice() {
     1.5 +    function test(subBuf, starts, size) {
     1.6 +        var byteLength = size;
     1.7 +        var subBuffer = eval(subBuf);
     1.8 +        var subArray = new Int8Array(subBuffer);
     1.9 +        assertEq(subBuffer.byteLength, byteLength);
    1.10 +        for (var i = 0; i < size; ++i)
    1.11 +            assertEq(starts + i, subArray[i]);
    1.12 +    }
    1.13 +
    1.14 +    var buffer = new ArrayBuffer(32);
    1.15 +    var array = new Int8Array(buffer);
    1.16 +    for (var i = 0; i < 32; ++i)
    1.17 +        array[i] = i;
    1.18 +
    1.19 +    test("buffer.slice(0)", 0, 32);
    1.20 +    test("buffer.slice(16)", 16, 16);
    1.21 +    test("buffer.slice(24)", 24, 8);
    1.22 +    test("buffer.slice(32)", 32, 0);
    1.23 +    test("buffer.slice(40)", 32, 0);
    1.24 +    test("buffer.slice(80)", 32, 0);
    1.25 +
    1.26 +    test("buffer.slice(-8)", 24, 8);
    1.27 +    test("buffer.slice(-16)", 16, 16);
    1.28 +    test("buffer.slice(-24)", 8, 24);
    1.29 +    test("buffer.slice(-32)", 0, 32);
    1.30 +    test("buffer.slice(-40)", 0, 32);
    1.31 +    test("buffer.slice(-80)", 0, 32);
    1.32 +
    1.33 +    test("buffer.slice(0, 32)", 0, 32);
    1.34 +    test("buffer.slice(0, 16)", 0, 16);
    1.35 +    test("buffer.slice(8, 24)", 8, 16);
    1.36 +    test("buffer.slice(16, 32)", 16, 16);
    1.37 +    test("buffer.slice(24, 16)", 24, 0);
    1.38 +
    1.39 +    test("buffer.slice(16, -8)", 16, 8);
    1.40 +    test("buffer.slice(-20, 30)", 12, 18);
    1.41 +
    1.42 +    test("buffer.slice(-8, -20)", 24, 0);
    1.43 +    test("buffer.slice(-20, -8)", 12, 12);
    1.44 +    test("buffer.slice(-40, 16)", 0, 16);
    1.45 +    test("buffer.slice(-40, 40)", 0, 32);
    1.46 +
    1.47 +    gczeal(7, 100000);
    1.48 +    var nurseryBuf = new ArrayBuffer(32);
    1.49 +    var arr = new Int8Array(nurseryBuf);
    1.50 +    arr[0] = 77;
    1.51 +
    1.52 +    // tenure nurseryBuf during the slice operation
    1.53 +    nurseryBuf.slice; // Creates an object
    1.54 +    schedulegc(1);
    1.55 +    var newbuf = nurseryBuf.slice(0);
    1.56 +    var arr2 = new Int8Array(newbuf);
    1.57 +    assertEq(arr2[0], 77);
    1.58 +}
    1.59 +
    1.60 +testSlice();