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b470e2fcb2
PR-URL: https://github.com/nodejs/node/pull/54642 Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Mattias Buelens <mattias@buelens.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Ethan Arrowood <ethan@arrowood.dev> Reviewed-By: Chemi Atlow <chemi@atlow.co.il> Reviewed-By: James M Snell <jasnell@gmail.com>
157 lines
6 KiB
HTML
157 lines
6 KiB
HTML
<!DOCTYPE HTML>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/resources/testdriver.js"></script>
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<script src="/resources/testdriver-actions.js"></script>
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<script src="/resources/testdriver-vendor.js"></script>
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<script src="scroll_support.js"></script>
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<style>
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#hspacer {
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height: 100px;
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width: 100vw;
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top: 0;
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/* on the right edge of targetDiv */
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left: 200px;
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position: absolute;
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}
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#vspacer {
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height: 100vh;
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width: 100px;
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position: absolute;
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}
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#targetDiv {
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width: 200px;
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height: 200px;
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overflow: scroll;
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}
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#innerDiv {
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width: 400px;
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height: 400px;
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}
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</style>
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<body style="margin:0" onload=runTest()>
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<div id="targetDiv">
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<div id="innerDiv"></div>
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</div>
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<div id="hspacer"></div>
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<div id="vspacer"></div>
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</body>
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<script>
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var target_div = document.getElementById('targetDiv');
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var overscrolled_x_deltas = [];
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var overscrolled_y_deltas = [];
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var scrollend_received = false;
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function onOverscroll(event) {
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overscrolled_x_deltas.push(event.deltaX);
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overscrolled_y_deltas.push(event.deltaY);
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}
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async function resetScrollers(test) {
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await waitForScrollReset(test, target_div);
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await waitForScrollReset(test, document.scrollingElement);
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}
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function resetOverScrollDeltas() {
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overscrolled_x_deltas = [];
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overscrolled_y_deltas = [];
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}
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function waitForOverscrollEventWithMinDelta(target, min_x = 0, min_y = 0) {
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return new Promise((resolve) => {
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target.addEventListener("overscroll", (evt) => {
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if (evt.deltaX >= min_x && evt.deltaY >= min_y) {
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resolve();
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}
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});
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});
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}
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function unreachedScrollendListener() {
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assert_unreached('Unexpected scrollend event');
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}
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document.addEventListener("overscroll", onOverscroll);
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function runTest() {
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promise_test(async (t) => {
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await resetScrollers(t);
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await waitForCompositorCommit();
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resetOverScrollDeltas();
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assert_equals(document.scrollingElement.scrollTop, 0,
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"document should not be scrolled");
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let scrollend_promise = waitForScrollendEvent(t, target_div);
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let max_target_div_scroll_top = target_div.scrollHeight - target_div.clientHeight;
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target_div.scrollTop = target_div.scrollHeight;
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await scrollend_promise;
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assert_equals(target_div.scrollTop, max_target_div_scroll_top,
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"target_div should be fully scrolled down");
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// Even though we request 300 extra pixels of scroll, the API above doesn't
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// guarantee how much scroll delta will be generated - different browsers
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// can consume different amounts for "touch slop" (for example). Ensure the
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// overscroll reaches at least 250 pixels which is a fairly conservative
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// value.
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let overscroll_promise = waitForOverscrollEventWithMinDelta(document,
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/*min_x*/0, /*min_y*/250);
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scrollend_promise = waitForScrollendEvent(t, document, 2000);
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target_div.addEventListener("scrollend", unreachedScrollendListener);
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// Scroll target div vertically and wait for the doc to get scrollend event.
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await scrollElementDown(target_div, target_div.clientHeight + 300);
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await waitForCompositorCommit();
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await overscroll_promise;
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await scrollend_promise;
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target_div.removeEventListener("scrollend", unreachedScrollendListener);
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assert_greater_than(overscrolled_y_deltas.length, 0, "There should be at least one overscroll events when overscrolling.");
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assert_equals(overscrolled_x_deltas.filter(function (x) { return x != 0; }).length, 0, "The deltaX attribute must be 0 when there is no scrolling in x direction.");
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assert_less_than_equal(Math.max(...overscrolled_y_deltas), 300, "The deltaY attribute must be <= the number of pixels overscrolled (300)");
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assert_greater_than(document.scrollingElement.scrollTop, target_div.clientHeight - 1,
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"document is scrolled by the height of target_div");
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}, "testing, vertical");
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promise_test(async (t) => {
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await resetScrollers(t);
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await waitForCompositorCommit();
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resetOverScrollDeltas();
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assert_equals(document.scrollingElement.scrollLeft, 0,
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"document should not be scrolled");
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let scrollend_promise = waitForScrollendEvent(t, target_div);
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let max_target_div_scroll_left = target_div.scrollWidth - target_div.clientWidth;
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target_div.scrollLeft = target_div.scrollWidth;
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await scrollend_promise;
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assert_equals(target_div.scrollLeft, max_target_div_scroll_left,
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"target_div should be fully scrolled right");
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let overscroll_promise = waitForOverscrollEventWithMinDelta(document,
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/*min_x*/250, /*min_y*/ 0);
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scrollend_promise = waitForScrollendEvent(t, document, 2000);
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target_div.addEventListener("scrollend", unreachedScrollendListener);
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// Scroll target div horizontally and wait for the doc to get scrollend event.
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await scrollElementLeft(target_div, target_div.clientWidth + 300);
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await waitForCompositorCommit();
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await overscroll_promise;
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await scrollend_promise;
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target_div.removeEventListener("scrollend", unreachedScrollendListener);
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assert_greater_than(document.scrollingElement.scrollLeft, target_div.clientWidth - 1,
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"document is scrolled by the height of target_div");
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// TODO(bokan): It looks like Chrome inappropriately filters some scroll
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// events despite |overscroll-behavior| being set to none. The overscroll
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// amount here has been loosened but this should be fixed in Chrome.
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// https://crbug.com/1112183.
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assert_greater_than(overscrolled_x_deltas.length, 0, "There should be at least one overscroll events when overscrolling.");
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assert_equals(overscrolled_y_deltas.filter(function(x){ return x!=0; }).length, 0, "The deltaY attribute must be 0 when there is no scrolling in y direction.");
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assert_less_than_equal(Math.max(...overscrolled_x_deltas), 300, "The deltaX attribute must be <= number of pixels overscrolled (300)");
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}, "testing, horizontal");
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}
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</script>
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