JSTests/stress/typedarray-functions-with-neutered.js

typedArrays = [Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, Float32Array, Float64Array];

proto = Int8Array.prototype.__proto__;

function getGetter(prop) {
    return Object.getOwnPropertyDescriptor(proto, prop).get;
}

function unit() { }


prototypeFunctions = [
    { func:getGetter("length"), args:[], result:0 },
    { func:getGetter("byteLength"), args:[], result:0 },
    { func:getGetter("byteOffset"), args:[], result:0 },
    { func:proto.copyWithin, args:[0, 1] },
    { func:proto.entries, args:[] },
    { func:proto.every, args:[unit] },
    { func:proto.every, args:[1] },
    { func:proto.filter, args:[unit] },
    { func:proto.find, args:[] },
    { func:proto.findIndex, args:[] },
    { func:proto.forEach, args:[] },
    { func:proto.indexOf, args:[] },
    { func:proto.join, args:[] },
    { func:proto.keys, args:[] },
    { func:proto.lastIndexOf, args:[] },
    { func:proto.map, args:[] },
    { func:proto.reduce, args:[] },
    { func:proto.reduceRight, args:[] },
    { func:proto.reverse, args:[] },
    { func:proto.set, args:[[]] },
    { func:proto.set, args:[new Int32Array(1)] },
    { func:proto.set, args:[new Int32Array(1)] },
    { func:proto.set, args:[new Int32Array(1), -1], error:"RangeError: Offset should not be negative" },
    { func:proto.slice, args:[] },
    { func:proto.some, args:[] },
    { func:proto.sort, args:[] },
    { func:proto.subarray, args:[] },
    { func:proto.toString, args:[] },
    { func:proto.values, args:[] },
];

arrays = typedArrays.map(function(constructor) {
    let view = new constructor(10);
    transferArrayBuffer(view.buffer);
    return view;
});

function checkProtoFunc(testArgs) {
    function throwsCorrectError(elem) {
        try {
            result = testArgs.func.call(...[elem, ...testArgs.args]);
            if (testArgs.result !== undefined) {
                return result === testArgs.result;
            }
        } catch (e) {
            if (testArgs.error)
                return e == testArgs.error;
            return e == "TypeError: Underlying ArrayBuffer has been detached from the view";
        }
        return false;
    }

    if (!arrays.every(throwsCorrectError))
        throw new Error("bad " + testArgs.func.name);
}

function test() {
    prototypeFunctions.forEach(checkProtoFunc);
}

for (var i = 0; i < 1000; i++)
    test();

// Test that we handle neutering for any toInteger neutering the arraybuffer.
prototypeFunctions = [
    { func:proto.copyWithin, args:["prim", "prim", "prim"] },
    { func:proto.fill, args:["prim", "prim", "prim"] },
    { func:proto.slice, args:["prim", "prim"] },
    { func:proto.subarray, args:["prim", "prim"] },
];

function defaultForArg(arg, argNum)
{
    if (arg === "func")
        return () => { return argNum; }
    if (arg === "array")
        return [1,2];

    return argNum;
}

function callWithArgs(func, array, args, argNum) {
    let failed = true;
    try {
        func.call(array, ...args);
    } catch (e) {
        if (e != "TypeError: Underlying ArrayBuffer has been detached from the view")
            throw new Error(e);
        failed = false;
    }
    if (failed)
        throw new Error([func, argNum]);
}


function checkArgumentsForType(func, args, constructor) {
    let defaultArgs = args.map(defaultForArg);

    for (let argNum = 0; argNum < args.length; argNum++) {
        let arg = args[argNum];
        let callArgs = defaultArgs.slice();

        if (arg === "na")
            continue;

        let array = new constructor(10);
        if (arg === "func") {
            callArgs[argNum] = () => {
                transferArrayBuffer(array.buffer);
                return func === array.every ? 1 : 0;
            };
            callWithArgs(func, array, callArgs, argNum);
        } else if (arg === "prim") {
            callArgs[argNum] = { [Symbol.toPrimitive]() {
                transferArrayBuffer(array.buffer);
                return argNum;
            } };
            callWithArgs(func, array, callArgs, argNum);
        } else if (arg === "array") {
            callArgs[argNum] = new Array(4);
            callArgs[argNum].fill(2);
            let desc = { get: () => {
                transferArrayBuffer(array.buffer);
                return 1;
            } };
            Object.defineProperty(callArgs[argNum], 1, desc);
            callWithArgs(func, array, callArgs, argNum);
        } else
            throw new Error(arg);
    }
}

function checkArguments({func, args}) {
    for (constructor of typedArrays)
        checkArgumentsForType(func, args, constructor);
}

function test2() {
    prototypeFunctions.forEach(checkArguments);
}

test2();