Bugzilla

var BUGNUMBER = 1016936;

var summary = "IteratorNext should throw if the value returned by iterator.next() is not an object.";

print(BUGNUMBER + ": " + summary);

var nonobjs = [

    null,

    undefined,

    1,

    true,

    "a",

    Symbol.iterator,

];

function createIterable(v) {

    var iterable = {};

    iterable[Symbol.iterator] = function () {

        return {

            next: function () {

                return v;

            }

        };

    };

    return iterable;

}

function f() {

}

for (var nonobj of nonobjs) {

    var iterable = createIterable(nonobj);

    assertThrowsInstanceOf(() => [...iterable], TypeError);

    assertThrowsInstanceOf(() => f(...iterable), TypeError);

    assertThrowsInstanceOf(() => { for (var x of iterable) {} }, TypeError);

    assertThrowsInstanceOf(() => {

        var [a] = iterable;

    }, TypeError);

    assertThrowsInstanceOf(() => {

        var [...a] = iterable;

    }, TypeError);

    assertThrowsInstanceOf(() => Array.from(iterable), TypeError);

    assertThrowsInstanceOf(() => new Map(iterable), TypeError);

    assertThrowsInstanceOf(() => new Set(iterable), TypeError);

    assertThrowsInstanceOf(() => new WeakMap(iterable), TypeError);

    assertThrowsInstanceOf(() => new WeakSet(iterable), TypeError);

    // FIXME: bug 1232266

    // assertThrowsInstanceOf(() => new Int8Array(iterable), TypeError);

    assertThrowsInstanceOf(() => Int8Array.from(iterable), TypeError);

    assertThrowsInstanceOf(() => {

        var g = function*() {

            yield* iterable;

        };

        var v = g();

        v.next();

    }, TypeError);

}

if (typeof reportCompare === "function")

    reportCompare(true, true);