iframe-loading-lazy-nav-location-replace-set-src.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-nav-location-replace-set-src.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Navigating iframe loading='lazy' and then setting src: location.replace</title>

<iframe data-src="support/blank.htm?nav" loading="lazy" hidden></iframe>

<script>

const iframe = document.querySelector('iframe');

const iframeLoaded = new Promise(resolve => {

  iframe.onload = resolve;

});

iframe.contentWindow.location.replace(iframe.dataset.src);

// Setting src invokes https://html.spec.whatwg.org/C#process-the-iframe-attributes

iframe.src = 'support/blank.htm?src';

iframe.hidden = false;

</script>

<!-- Loading testharness.js here is intentional to reproduce a bug in WebKit. -->

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

setup({single_test: true});

iframeLoaded.then(() => {

  // Need a timeout to detect failure when there are two navigations.

  step_timeout(() => {

    assert_equals(iframe.contentWindow.location.href, new URL("support/blank.htm?src", location.href).href);

    done();

  }, 1000);

});

</script>