ancestor-activeelement-after-child-lose-focus.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /focus/ancestor-activeelement-after-child-lose-focus.html - WPT Dashboard Interop Dashboard

<!doctype html>

<head>

<meta charset=utf-8>

<title>Ancestor's activeElement should be cleared when child loses focus</title>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

</head>

<body>

<input placeholder="input in top level"/>

<iframe srcdoc="<iframe srcdoc='<input>'></iframe>"></iframe>

<script>

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

function runTest() {

  test(() => {

    assert_true(outerIFrame.contentDocument.activeElement === outerIFrame.contentDocument.body,

      "Initially, the activeElement of the outer iframe should be <body>");

    const innerIFrame = outerIFrame.contentDocument.querySelector("iframe");

    const inputInInner = innerIFrame.contentDocument.querySelector('input');

    // Now we focus the input in the inner iframe

    inputInInner.focus();

    // outerIframe is the ancestor of inner iframe, so the activeElement of

    // it should be the inner iframe.

    assert_true(outerIFrame.contentDocument.activeElement === innerIFrame,

      "The activeElement of the outer iframe should be the inner iframe");

    // Now we focus the input in the top level

    document.querySelector("input").focus();

    // Since inner iframe lost its focus, the activeElement of outer iframe

    // should be cleared as well, hence <body> should be focused.

    assert_true(outerIFrame.contentDocument.activeElement === outerIFrame.contentDocument.body,

      "The activeElement of the outer iframe should be reverted back to <body>");

    assert_true(document.activeElement === document.querySelector("input"),

      "The activeElement of the top-level document should be the input");

});

window.onload = function() {

  runTest();

</script>

</body>