chromium/third_party/blink/web_tests/fast/dom/inert/inert-node-is-uneditable.html

<!DOCTYPE html>
<html>
<head>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
</head>
<body>
<span inert id="not-editable" contenteditable>I'm not editable.</span>
<span id="editable" contenteditable>I'm editable.</span>
<script>
function clickOn(element)
{
    return new Promise(function(resolve, reject) {
        if (!window.eventSender)
            reject();

        var absoluteTop = 0;
        var absoluteLeft = 0;
        for (var parentNode = element; parentNode; parentNode = parentNode.offsetParent) {
            absoluteLeft += parentNode.offsetLeft;
            absoluteTop += parentNode.offsetTop;
        }

        var x = absoluteLeft + element.offsetWidth / 2;
        var y = absoluteTop + element.offsetHeight / 2;
        var pointerActions = [{
            source: "mouse",
            actions: [
                { name: "pointerMove", x: x, y: y },
                { name: "pointerDown", x: x, y: x },
                { name: "pointerUp" },
                { name: "pointerMove", x: 0, y: 0}
            ]
        }];
        chrome.gpuBenchmarking.pointerActionSequence(pointerActions, resolve);
    });
}

var notEditable = document.querySelector('#not-editable');
var editable = document.querySelector('#editable');

promise_test(async () => {
    await clickOn(notEditable);
    var oldValue = notEditable.textContent;
    assert_equals(oldValue, "I'm not editable.");
    eventSender.keyDown('a');
    assert_equals(notEditable.textContent, oldValue);
}, "Can't edit inert contenteditable");

promise_test(async () => {
    await clickOn(editable);
    var oldValue = editable.textContent;
    assert_equals(oldValue, "I'm editable.");
    eventSender.keyDown('a');
    assert_not_equals(editable.textContent, oldValue);
}, "Can edit non-inert contenteditable");

</script>
</body>
</html>