Quelle test_bug1261673.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/html/test/test_bug1261673.html

<!DOCTYPE HTML>
<html>

<head>
  <meta charset="utf-8">
  <title>Test for Bug 1261673</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.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;

  // The expected value of the number field; used in is() check below.
  // Initialized to the value that the field starts out with; subtests will
  // modify this if they expect to modify the value.
  let expectedValue = parseInt(input.value);

  // Actual/expected number of mutations to the number field's value:
  let actualChangeCount = 0;
  let expectedChangeCount = 0;

  const prefName = "dom.input.number_and_range_modified_by_mousewheel";
  let didFlipPref = false;
  let isPrefEnabled = SpecialPowers.getBoolPref(prefName);
  is(isPrefEnabled, false,  "Expecting pref to be disabled by default");
  input.addEventListener("change", () => {
    ++actualChangeCount;
  });

  function runNext() {
    let p = params[testIdx];
    (p.focus) ? input.focus() : input.blur();
    if (isPrefEnabled && p.valueChanged != 0) {
      expectedChangeCount++;
      expectedValue += p.valueChanged;
    }

    sendWheelAndPaint(input, 1, 1, { deltaY: p.deltaY, deltaMode: p.deltaMode },
                      async () => {
      is(parseInt(input.value), expectedValue,
         "Handle wheel in number input test-" + testIdx +
         " with pref " + (isPrefEnabled ? "en" : "dis") + "abled");

      is(actualChangeCount, expectedChangeCount,
         "UA should fire change event when input's value changed");
      if (++testIdx < params.length) {
        // More subtests remain; kick off the next one.
        runNext();
      } else if (!didFlipPref) {
        // Reached the end of the subtest list.  Flip the pref
        // and restart our iteration over the subtests.
        await SpecialPowers.pushPrefEnv({
          set: [[prefName, !isPrefEnabled]],
        });
        isPrefEnabled = !isPrefEnabled;
        didFlipPref = true;
        testIdx = actualChangeCount = expectedChangeCount = 0;
        runNext();
      } else {
        // Reached the end of the subtest list, for both pref settings.
        // We're done!
        SimpleTest.finish();
      }
    });
  }
  runNext();
}

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

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