function testSlice() { function test(subBuf, starts, size) { var byteLength = size; var subBuffer = eval(subBuf); var subArray = new Int8Array(subBuffer); assertEq(subBuffer.byteLength, byteLength); for (var i = 0; i < size; ++i) assertEq(starts + i, subArray[i]); } var buffer = new ArrayBuffer(32); var array = new Int8Array(buffer); for (var i = 0; i < 32; ++i) array[i] = i; test("buffer.slice(0)", 0, 32); test("buffer.slice(16)", 16, 16); test("buffer.slice(24)", 24, 8); test("buffer.slice(32)", 32, 0); test("buffer.slice(40)", 32, 0); test("buffer.slice(80)", 32, 0); test("buffer.slice(-8)", 24, 8); test("buffer.slice(-16)", 16, 16); test("buffer.slice(-24)", 8, 24); test("buffer.slice(-32)", 0, 32); test("buffer.slice(-40)", 0, 32); test("buffer.slice(-80)", 0, 32); test("buffer.slice(0, 32)", 0, 32); test("buffer.slice(0, 16)", 0, 16); test("buffer.slice(8, 24)", 8, 16); test("buffer.slice(16, 32)", 16, 16); test("buffer.slice(24, 16)", 24, 0); test("buffer.slice(16, -8)", 16, 8); test("buffer.slice(-20, 30)", 12, 18); test("buffer.slice(-8, -20)", 24, 0); test("buffer.slice(-20, -8)", 12, 12); test("buffer.slice(-40, 16)", 0, 16); test("buffer.slice(-40, 40)", 0, 32); gczeal(7, 100000); var nurseryBuf = new ArrayBuffer(32); var arr = new Int8Array(nurseryBuf); arr[0] = 77; // tenure nurseryBuf during the slice operation nurseryBuf.slice; // Creates an object schedulegc(1); var newbuf = nurseryBuf.slice(0); var arr2 = new Int8Array(newbuf); assertEq(arr2[0], 77); } testSlice();