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<!DOCTYPE html>
<meta charset="utf-8">
<title>TestDriver actions: wheel scroll</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>

<style>
#container {
  width: 200px;
  height: 200px;
  overflow: scroll;
}

#content {
  width: 600px;
  height: 1000px;
  background-color: blue;
}

</style>

<div id="container">
  <div id="content"></div>
</div>

<script>
let event_type = [];
let event_id = [];

promise_test(async t => {
  let container = document.getElementById("container");
  container.addEventListener("wheel",
    e => {event_type.push(e.type);});

  let actions = new test_driver.Actions()
       .scroll(0, 0, 0, 50, {origin: container});

  await actions.send()
  assert_array_equals(event_type, ["wheel"]);
});
</script>