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// Test for-of with iter.next and monkeypatching.
function* g(n) { for (var i=0; i<n; i++) yield i; }
var GeneratorObjectPrototype = Object.getPrototypeOf(g).prototype;
var GeneratorObjectPrototype_next = GeneratorObjectPrototype.next;
// Monkeypatch next on an iterator.
var inner = g(20);
var n = 0;
for (let x of inner) {
if (n == 0) {
assertEq(x, n++);
} else if (n == 1) {
assertEq(x, n++);
inner.next = function() { return { value: 42, done: false }; };
} else if (n == 2) {
assertEq(x, 42);
inner.next = function() { return { value: 100, done: true }; };
} else
throw 'not reached';
}
// Monkeypatch next on the prototype.
var inner = g(20);
var n = 0;
for (let x of inner) {
if (n == 0) {
assertEq(x, n++);
} else if (n == 1) {
assertEq(x, n++);
GeneratorObjectPrototype.next =
function() { return { value: 42, done: false }; };
} else if (n == 2) {
n++;
assertEq(x, 42);
GeneratorObjectPrototype.next = GeneratorObjectPrototype_next;
} else if (n <= 20) {
assertEq(x, n++ - 1);
} else
throw 'not reached';
}
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