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+<!DOCTYPE HTML>
+<html>
+<head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=2100"/>
+ <title>Check that double tapping when the page is overflow hidden and has been scrolled down by js works</title>
+ <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
+ <script type="application/javascript" src="apz_test_utils.js"></script>
+ <script src="/tests/SimpleTest/paint_listener.js"></script>
+ <script type="application/javascript">
+
+async function test() {
+ let useTouchpad = (location.search == "?touchpad");
+
+ var resolution = await getResolution();
+ ok(resolution > 0,
+ "The initial_resolution is " + resolution + ", which is some sane value");
+
+ // instant scroll down
+ window.scrollTo({
+ top: window.innerHeight * 2 - 50,
+ left: 0,
+ behavior: 'auto'
+ });
+
+ await promiseApzFlushedRepaints();
+
+ let scrollPos = window.scrollY;
+ ok(scrollPos > window.innerHeight + 100, "window scrolled down");
+
+ info("window.scrollY " + window.scrollY);
+
+ info("window.innerHeight " + window.innerHeight);
+
+ info("document.documentElement.scrollHeight " + document.documentElement.scrollHeight);
+
+ let target = document.getElementById("target");
+
+ // Check that double-tapping once zooms in
+ info("sending double tap");
+ await doubleTapOn(target, 10, 10, useTouchpad);
+ var prev_resolution = resolution;
+ resolution = await getResolution();
+ ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);
+
+ ok(window.scrollY > window.innerHeight + 100, "window is still scrolled down");
+ ok(Math.abs(window.scrollY - scrollPos) < 2, "window didnt scroll");
+ info("window.scrollY " + window.scrollY);
+}
+
+waitUntilApzStable()
+.then(test)
+.then(subtestDone, subtestFailed);
+
+ </script>
+ <style>
+ html, body {
+ overflow: hidden;
+ }
+ .spacer {
+ background-color: #eee;
+
+ height: 200vh;
+ }
+ .rect {
+ background-color: #aaa;
+ width: 100px;
+ height: 100px;
+ }
+</style>
+</head>
+<body>
+
+<div class="spacer">
+</div>
+<div id="target" class="rect">
+</div>
+<div class="spacer">
+</div>
+
+</body>
+</html>