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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<title>Tests that :active state is changed on a scrollable container without any touch event listeners</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
 <script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="apz_test_utils.js"></script>
<script src="apz_test_native_event_utils.js"></script>
<style>
#scrollable {
  height: 50vh;
  width: 50vw;
  background: yellow;
  overflow: scroll;
}

#scrollabletarget {
  height: 200vh;
  width: 200vh;
  background: green;
}

#scrollabletarget:active {
  background: red;
}

</style>
<div id="scrollable">
  <div id="scrollabletarget">
  </div>
</div>
<script>
async function test() {
  ok(!scrollabletarget.matches(":active"), "should not be active initially");

  await synthesizeNativeTap(scrollabletarget, 50, 50);

  // In JS there's no way to ensure `APZStateChange::eStartTouch` notification
  // has been processed. So we wait for `:active` state change here.
  await SimpleTest.promiseWaitForCondition(
    () => scrollabletarget.matches(":active"),
    "Waiting for :active state change");
  ok(scrollabletarget.matches(":active"), "should be active");
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
</html>