File: a-download-click-404.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Clicking on an &lt;a> element with a download attribute and href that leads to 404 should not navigate</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-a-element:activation-behaviour">
<link rel="help" href="https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-download">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
"use strict";
async_test(t => {
    const errorFrame = document.createElement("iframe");

    errorFrame.addEventListener("load", t.step_func(function () {
        errorFrame.contentWindow.addEventListener(
            "beforeunload", t.unreached_func("Navigated instead of downloading"));

        errorFrame.contentDocument.querySelector("#error-url").click();
        t.step_timeout(() => t.done(), 1000);
    }));
    errorFrame.src = "resources/a-download-404.html";
    document.body.appendChild(errorFrame);
}, "Do not navigate to 404 for anchor with download");
</script>
</body>