chromium/third_party/blink/web_tests/external/wpt/html/semantics/scripting-1/the-script-element/module/dynamic-import/inline-event-handler.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id='div' onmousedown='import("./../imports-a.js").then(window.continueTest);'></div>
<script>
const div = document.getElementById('div');

promise_test(t => {
  const promise = new Promise(resolve => window.continueTest = resolve);

  const event = new MouseEvent('mousedown', {'button': 1});
  div.dispatchEvent(event);

  return promise.then(() => {
    assert_true(window.evaluated_imports_a);
    div.parentNode.removeChild(div);
  });
}, "dynamic import should work when triggered from inline event handlers");
</script>