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// for-of on a proxy causes a predictable sequence of trap calls.
load(libdir + "iteration.js");
var s = '';
var i = 0;
var next_fn = new Proxy(function() {}, {
apply() {
s += "n";
if (i == 3)
return { value: undefined, done: true };
return { value: i++, done: false };
}
});
var it = new Proxy({}, {
get(target, property, receiver) {
assertEq(property, "next");
s += "N";
return next_fn;
}
});
var iterator_fn = new Proxy(function() {}, {
apply() {
s += 'i';
return it;
}
});
var obj = new Proxy({}, {
get: function (receiver, name) {
assertEq(name, Symbol.iterator);
s += "I";
return iterator_fn;
}
});
for (var v of obj)
s += v;
assertEq(s, 'IiNn0n1n2n');