src/third_party/mozjs-45/js/src/jit-test/tests/for-of/array-prototype.js

// for-of works on Array.prototype.

var v;
for (v of Array.prototype)
    throw "FAIL";

var s = '';
Array.prototype.push('a', 'b');
for (v of Array.prototype)
    s += v;
assertEq(s, 'ab');