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<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<title>Sanity panning test for scrollable div</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() {
var outer = document.getElementById("outer");
var transformEndPromise = promiseTransformEnd();
await synthesizeNativeTouchDrag(outer.contentDocument.body, 10, 100, 0, -50);
dump("Finished native drag, waiting for transform-end observer...\n");
await transformEndPromise;
dump("Transform complete; flushing repaints...\n");
await promiseOnlyApzControllerFlushed(outer.contentWindow);
var outerScroll = outer.contentWindow.scrollY;
if (getPlatform() == "windows") {
// On windows, because we run this test with native event synthesization,
// Windows can end up eating the first touchmove which can result in the
// scroll amount being slightly smaller than 50px. See bug 1388955.
dump("iframe scrolled " + outerScroll + "px");
ok(outerScroll > 45, "iframe scrolled at least 45 px");
ok(outerScroll <= 50, "iframe scrolled at most 50 px");
} else {
is(outerScroll, 50, "check that the iframe scrolled");
<iframe id="outer" style="height: 250px; border: solid 1px black" srcdoc="<body style='height:5000px'>"></iframe>
<div style="height: 5000px; background-color: lightgreen;">
This div makes the top-level page scrollable.