| 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(); |