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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1261673
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1261673</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1261673">Mozilla Bug 1261673</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<input id="test_number" type="number" value=5>
<script type="text/javascript">

/** Test for Bug 1261673 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(runTests);

function runTests() {
  let input = window.document.getElementById("test_number");

  // focus: whether the target input element is focused
  // deltaY: deltaY of WheelEvent
  // deltaMode: deltaMode of WheelEvent
  // valueChanged: expected value changes after input element handled the wheel event
  let params = [
    {focus: true, deltaY: 1.0, deltaMode: WheelEvent.DOM_DELTA_LINE, valueChanged: -1},
    {focus: true, deltaY: -1.0, deltaMode: WheelEvent.DOM_DELTA_LINE, valueChanged: 1},
    {focus: true, deltaY: 1.0, deltaMode: WheelEvent.DOM_DELTA_PAGE, valueChanged: -1},
    {focus: true, deltaY: -1.0, deltaMode: WheelEvent.DOM_DELTA_PAGE, valueChanged: 1},
    {focus: true, deltaY: 1.0, deltaMode: WheelEvent.DOM_DELTA_PIXEL, valueChanged: 0},
    {focus: true, deltaY: -1.0, deltaMode: WheelEvent.DOM_DELTA_PIXEL, valueChanged: 0},
    {focus: false, deltaY: 1.0, deltaMode: WheelEvent.DOM_DELTA_LINE, valueChanged: 0},
    {focus: false, deltaY: -1.0, deltaMode: WheelEvent.DOM_DELTA_LINE, valueChanged: 0}
  ];

  let testIdx = 0;
  let result = parseInt(input.value);
  let numberChange = 0;
  let expectChange = 0;

  input.addEventListener("change", () => {
    ++numberChange;
  }, false);

  function runNext() {
    let p = params[testIdx];
    (p["focus"]) ? input.focus() : input.blur();
    expectChange = p["valueChanged"] == 0 ? expectChange : expectChange + 1;
    result += parseInt(p["valueChanged"]);
    synthesizeWheel(input, 1, 1, { deltaY: p["deltaY"], deltaMode: p["deltaMode"] });
    window.postMessage("finished", "http://mochi.test:8888");
    testIdx++;
  }

  window.addEventListener("message", event => {
    if (event.data == "finished") {
      ok(input.value == result,
        "Handle wheel in number input test-" + testIdx + " expect " + result +
        " get " + input.value);
      ok(numberChange == expectChange,
         "UA should fire change event when input's value changed, expect " + expectChange + " get " + numberChange);
      (testIdx >= params.length) ? SimpleTest.finish() : runNext();
    }
  });
  runNext();
}

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