chromium/third_party/blink/web_tests/external/wpt/inert/inert-svg-hittest.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Hit-testing with inert SVG</title>
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#inert">
<meta assert="assert" content="SVG inside element with inert attribute should be unreachable with hit-testing">
<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>
<script src="/resources/testdriver-actions.js"></script>

<div id="wrapper">
    <div inert id="svg-container">
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500">
            <rect width="500" height="500" id="target" fill="red">
        </svg>
    </div>
</div>

<script>
const wrapper = document.getElementById("wrapper");
const target = document.getElementById("target");

promise_test(async function() {
    let reachedTarget = false;
    target.addEventListener("mousedown", () => {
        reachedTarget = true;
    }, { once: true });

    let reachedWrapper = false;
    wrapper.addEventListener("mousedown", () => {
        reachedWrapper = true;
    }, { once: true });

    await new test_driver.Actions()
        .pointerMove(0, 0, { origin: wrapper })
        .pointerDown()
        .send();
    this.add_cleanup(() => test_driver.click(document.body));

    assert_false(target.matches(":active"), "target is not active");
    assert_false(target.matches(":hover"), "target is not hovered");
    assert_false(reachedTarget, "target didn't get event");

    assert_true(wrapper.matches(":hover"), "wrapper is hovered");
    assert_true(reachedWrapper, "wrapper got event");
}, "Hit-testing doesn't reach contents of an inert SVG");

promise_test(async function() {
    document.querySelector("#svg-container").inert = false;

    let reachedTarget = false;
    target.addEventListener("mousedown", () => {
        reachedTarget = true;
    }, { once: true });

    await new test_driver.Actions()
        .pointerMove(0, 0, { origin: wrapper })
        .pointerDown()
        .send();
    this.add_cleanup(() => test_driver.click(document.body));

    assert_true(target.matches(":active"), "target is active");
    assert_true(target.matches(":hover"), "target is hovered");
    assert_true(reachedTarget, "target got event");

    assert_true(wrapper.matches(":hover"), "wrapper is hovered");
}, "Hit-testing can reach contents of a no longer inert SVG");
</script>