chromium/src/third_party/blink/web_tests/fast/js/script-tests/dfg-prototype-chain-caching-with-impure-get-own-property-slot-traps.js

description(
"Tests what happens when you make prototype chain accesses with impure GetOwnPropertySlot traps in the way."
);

var doc = document;

function f() {
    return doc.getElementsByTagName;
}

var expected = "\"function\"";
for (var i = 0; i < 400; ++i) {
    if (i == 350) {
        var img = new Image();
        img.name = "getElementsByTagName";
        document.body.appendChild(img);
        expected = "\"object\"";
    }
    shouldBe("typeof f()", expected);
}