iframe-loading-lazy-nav-link-click.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-link-click.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Navigating iframe loading='lazy' before it is loaded: link click</title>

<iframe name="iframe" src="support/blank.htm?src" loading="lazy" hidden></iframe>

<a href="support/blank.htm?nav" target="iframe"></a>

<script>

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

const iframeLoaded = new Promise(resolve => {

  iframe.onload = resolve;

});

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

a.click();

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?nav", location.href).href);

    done();

  }, 1000);

});

</script>