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<!DOCTYPE HTML>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="scroll_support.js"></script>
<style>
#hspacer {
height: 100px;
width: 100vw;
top: 0;
left: 200px;
/* on the right edge od targetDiv */
position: absolute;
}
#vspacer {
height: 100vh;
width: 100px;
position: absolute;
}
#targetDiv {
width: 200px;
height: 200px;
overflow: scroll;
}
#innerDiv {
width: 400px;
height: 400px;
}
</style>
<body style="margin:0" onload=runTest()>
<div id="targetDiv">
<div id="innerDiv"></div>
</div>
<div id="hspacer"></div>
<div id="vspacer"></div>
</body>
<script>
var target_div = document.getElementById('targetDiv');
async function resetScrollers(test) {
await waitForScrollReset(test, target_div);
await waitForScrollReset(test, document.scrollingElement);
}
function fail() {
assert_true(false);
}
function runTest() {
promise_test(async (t) => {
await resetScrollers(t);
await waitForCompositorCommit();
assert_equals(document.scrollingElement.scrollTop, 0,
"document should not be scrolled");
let scrollend_promise = waitForScrollendEvent(t, target_div);
let max_target_div_scroll_top = target_div.scrollHeight - target_div.clientHeight;
target_div.scrollTo({ top: target_div.scrollHeight, left: 0 });
await scrollend_promise;
assert_approx_equals(target_div.scrollTop, max_target_div_scroll_top, 1,
"target_div should be fully scrolled down");
scrollend_promise = waitForScrollendEvent(t, document, 2000);
target_div.addEventListener("scrollend", fail);
// Scroll up on target div and wait for the doc to get scrollend event.
await scrollElementDown(target_div, target_div.clientHeight + 25);
await scrollend_promise;
target_div.removeEventListener("scrollend", fail);
assert_greater_than(document.scrollingElement.scrollTop, target_div.clientHeight - 1,
"document is scrolled by the height of target_div");
}, "testing, vertical");
promise_test(async (t) => {
await resetScrollers(t);
await waitForCompositorCommit();
assert_equals(document.scrollingElement.scrollLeft, 0,
"document should not be scrolled");
let scrollend_promise = waitForScrollendEvent(t, target_div);
let max_target_div_scroll_left = target_div.scrollWidth - target_div.clientWidth;
target_div.scrollTo({ left: target_div.scrollWidth, top: 0 });
await scrollend_promise;
assert_approx_equals(target_div.scrollLeft, max_target_div_scroll_left, 1,
"target_div should be fully scrolled right");
scrollend_promise = waitForScrollendEvent(t, document, 2000);
target_div.addEventListener("scrollend", fail);
await scrollElementLeft(target_div, target_div.clientWidth + 25);
await scrollend_promise;
target_div.removeEventListener("scrollend", fail);
assert_greater_than(document.scrollingElement.scrollLeft, target_div.clientWidth - 1,
"document is scrolled by the height of target_div");
}, "testing, horizontal");
}
</script>
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