File: NodeList-static-length-getter-tampered-indexOf-1.html

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<!doctype html>
<meta charset="utf-8">
<meta name=timeout content=long>
<title>NodeList (static collection) "length" getter tampered (Array.prototype.indexOf)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<body>

<script src="support/NodeList-static-length-tampered.js"></script>
<script>
test(() => {
    const nodeList = makeStaticNodeList(100);

    for (var i = 0; i < 50; i++) {
        if (i === 25)
            Object.defineProperty(nodeList, "length", { get() { return 10; } });

        assert_equals(arrayIndexOfNodeList(nodeList), i >= 25 ? -1 : 50);
    }
});
</script>