selection-change-not-fired-if-selection-set-to-root.html

<!doctype HTML>
<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>

<body>
  <div contenteditable="true" id="target">
  </div>
  <script>
    // Selectionchange event should not get fired if the selection is already set to the beginning of the root
    promise_test(async () => {
        let selectionChangeCount = 0;
        document.getElementById("target").focus();
        await new Promise(resolve => step_timeout(resolve, 50));
        document.addEventListener("selectionchange", () => ++selectionChangeCount);
        test_driver.send_keys(target, "\uE003");
        // Waits a short time to allow any events to be processed.
        await new Promise(resolve => step_timeout(resolve, 50));
        assert_equals(selectionChangeCount, 0, "Selectionchange event should not get fired");
    }, "Selectionchange event not get fired when the selection is already set to the beginning of the root ");
  </script>
</body>

chromium/third_party/blink/web_tests/external/wpt/editing/other/selection-change-not-fired-if-selection-set-to-root.html