michael@0: // Based on tests/ion/typed-arrays-1.js, but with string indexes
michael@0: function testInt8() {
michael@0:     var arr1 = new Int8Array(50);
michael@0:     var arr2 = new Uint8Array(50);
michael@0:     var arr3 = new Uint8ClampedArray(50);
michael@0: 
michael@0:     for (var i=0; i<arr1.length; i++) {
michael@0:         arr1[i] = arr2[i] = arr3[i] = i * 8;
michael@0:     }
michael@0:     var res = 0;
michael@0:     for (var i=0; i<arr1.length; i++) {
michael@0:         res += arr1[i+""] + arr2[i+""] + arr3[i+""] + arr2["10".concat("")];
michael@0:     }
michael@0:     assertEq(res, 18334);
michael@0: }
michael@0: testInt8();
michael@0: 
michael@0: function testInt16() {
michael@0:     var arr1 = new Int16Array(70);
michael@0:     var arr2 = new Uint16Array(70);
michael@0: 
michael@0:     for (var i=0; i<arr1.length; i++) {
michael@0:         arr1[i] = arr2[i] = i * 1000;
michael@0:     }
michael@0:     var res = 0;
michael@0:     for (var i=0; i<arr1.length; i++) {
michael@0:         res += arr1[i+""] + arr2[i+""] + arr2["1".concat("")] + arr1["3".concat("")];
michael@0:     }
michael@0:     assertEq(res, 2423024);
michael@0: }
michael@0: testInt16();
michael@0: 
michael@0: function testInt32() {
michael@0:     var arr = new Int32Array(60);
michael@0:     arr[0] = -50;
michael@0:     for (var i=1; i<arr.length; i++) {
michael@0:         arr[i] = arr[(i-1)+""] + arr["0".concat("")];
michael@0:         ++arr[0];
michael@0:     }
michael@0:     assertEq(arr[(arr.length-1)+""], -1289);
michael@0: }
michael@0: testInt32();
michael@0: 
michael@0: function testUint32() {
michael@0:     function sum(arr) {
michael@0:         var res = 0;
michael@0:         for (var i=0; i<arr.length; i++) {
michael@0:             res += arr[i+""];
michael@0:         }
michael@0:         return res;
michael@0:     }
michael@0:     var arr = new Uint32Array(100);
michael@0:     for (var i=0; i<arr.length; i++) {
michael@0:         arr[i] = i;
michael@0:     }
michael@0: 
michael@0:     // Compile sum() to read int32 values.
michael@0:     assertEq(sum(arr), 4950);
michael@0: 
michael@0:     // Add a large uint32 so that the sum no longer fits in an
michael@0:     // int32. sum() should be recompiled to return a double.
michael@0:     arr[50] = 0xffffeeee;
michael@0:     assertEq(sum(arr), 4294967826);
michael@0: }
michael@0: testUint32();
michael@0: 
michael@0: function testFloat() {
michael@0:     var arr1 = new Float32Array(75);
michael@0:     var arr2 = new Float64Array(75);
michael@0:     arr1[0] = arr2[0] = Math.PI * 1234567.8;
michael@0: 
michael@0:     for (var i=1; i<75; i++) {
michael@0:         arr1[i] = arr1[(i-1)+""] + arr1[0];
michael@0:         arr2[i] = arr2[(i-1)+""] + arr2[0];
michael@0:     }
michael@0:     assertEq(arr1["74".concat("")] > 290888255, true);
michael@0:     assertEq(arr1["74".concat("")] < 290888257, true);
michael@0: 
michael@0:     assertEq(arr2["74".concat("")] > 290888184, true);
michael@0:     assertEq(arr2["74".concat("")] < 290888185, true);
michael@0: }
michael@0: testFloat();
michael@0: 
michael@0: function testCanonicalNaN() {
michael@0:     // NaN values have to be canonicalized. Otherwise, malicious scripts could
michael@0:     // construct arbitrary Value's (due to our NaN boxing Value representation).
michael@0:     var buf = new ArrayBuffer(16);
michael@0:     var uint32 = new Uint32Array(buf);
michael@0:     var f64 = new Float64Array(buf);
michael@0:     var f32 = new Float32Array(buf);
michael@0: 
michael@0:     // Evil: write a JSVAL_TYPE_OBJECT type tag...
michael@0:     uint32[0] = 0xffffff87;
michael@0:     uint32[1] = 0xffffff87;
michael@0: 
michael@0:     // Make sure this value is interpreted as a double.
michael@0:     for (var i=0; i<3; i++) {
michael@0:         assertEq(isNaN(f64["0".concat("")]), true);
michael@0:         assertEq(isNaN(f32["0".concat("")]), true);
michael@0:     }
michael@0: }
michael@0: testCanonicalNaN();
michael@0: 
michael@0: function testOutOfBounds() {
michael@0:     var buf = new ArrayBuffer(16);
michael@0:     var uint32 = new Uint32Array(buf);
michael@0: 
michael@0:     uint32[0] = 0;
michael@0:     uint32[1] = 1;
michael@0: 
michael@0:     for (var i=0; i<3; i++) {
michael@0:       assertEq(uint32["0".concat("")], 0);
michael@0:       assertEq(uint32["1".concat("")], 1);
michael@0:       assertEq(uint32["2".concat("")], 0);
michael@0:       assertEq(uint32["17".concat("")], undefined);
michael@0:     }
michael@0: }
michael@0: testOutOfBounds();
michael@0: 
michael@0: function testStrangeIndexes() {
michael@0:     var buf = new ArrayBuffer(16);
michael@0:     var uint32 = new Uint32Array(buf);
michael@0: 
michael@0:     uint32[0] = 0;
michael@0:     uint32[1] = 1;
michael@0: 
michael@0:     indexes = ["0", "1", "2", "3", "17", "3.5", "NaN", "undefined", "null"];
michael@0:     solutions = [0, 1, 0, 0, undefined, undefined, undefined, undefined, undefined];
michael@0: 
michael@0:     for (var i=0; i<indexes.length; i++) {
michael@0:       assertEq(uint32[indexes[i]], solutions[i]);
michael@0:     }
michael@0: }
michael@0: testStrangeIndexes();
michael@0: