src/third_party/mozjs-45/js/src/jit-test/tests/for-of/non-iterable.js

// Iterating over non-iterable values throws a TypeError.

load(libdir + "asserts.js");

function argsobj() { return arguments; }

var misc = [
    {}, {x: 1}, Math, isNaN,
    Object.create(null),
    argsobj(0, 1, 2),
    null, undefined,
    true, 0, 3.1416,
    new Boolean(true), new Number(0),
    {iterator: function () { return undefined; }},
    {iterator: function () { return null; }},
    {iterator: function () { return true; }},
    {iterator: function () { return 17; }},
];

for (var i = 0; i < misc.length; i++) {
    let v = misc[i];
    var testfn = function () {
        for (var _ of v)
            throw 'FAIL';
        throw 'BAD';
    };
    assertThrowsInstanceOf(testfn, TypeError);
}