gecko-dev/dom/html/test/forms/test_bug1286509.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1286509
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1286509</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/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=1286509">Mozilla Bug 1286509</a>
<p id="display"></p>
<div id="content">
<input type="range" id="test_input" min="0" max="10" value="5">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 1286509 **/
SimpleTest.waitForExplicitFinish();
var expectedEventSequence = ['keydown', 'change', 'keyup'];
var eventCounts = {};
var expectedEventIdx = 0;
function test() {
var range = document.getElementById("test_input");
range.focus();
expectedEventSequence.forEach((eventName) => {
eventCounts[eventName] = 0;
range.addEventListener(eventName, (e) => {
++eventCounts[eventName];
is(expectedEventSequence[expectedEventIdx], e.type, "Events sequence should be keydown, change, keyup");
expectedEventIdx = (expectedEventIdx + 1) % 3;
});
});
synthesizeKey("KEY_ArrowUp");
synthesizeKey("KEY_ArrowDown");
synthesizeKey("KEY_ArrowLeft");
synthesizeKey("KEY_ArrowRight");
is(eventCounts['change'], 4, "Expect key up/down/left/right should trigger range input to fire change events");
SimpleTest.finish();
}
addLoadEvent(test);
</script>
</pre>
</body>
</html>