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