position-sticky-right.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-position/sticky/position-sticky-right.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>position:sticky elements should respect the right constraint</title>

<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />

<meta name="assert" content="This test checks that position:sticky elements obey their right anchor after scrolling" />

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="../resources/sticky-util.js"></script>

<body></body>

<script>

test(() => {

  const elements = setupStickyTest('right', 25);

  elements.scroller.scrollLeft = 200;

  const nonStickyLeftX = elements.container.offsetLeft +

    elements.filler.clientWidth;

  assert_equals(elements.sticky.offsetLeft, nonStickyLeftX);

}, 'before reaching the sticking point the sticky box should not be offset');

test(() => {

  const elements = setupStickyTest('right', 25);

  elements.scroller.scrollLeft = 75;

  const nonStickyLeftX = elements.container.offsetLeft +

      elements.filler.clientWidth;

  const nonStickyRightX = nonStickyLeftX + elements.sticky.clientWidth;

  const targetRightX = elements.scroller.clientWidth +

      elements.scroller.scrollLeft - 25;

  const stickyOffset = nonStickyRightX - targetRightX;

  assert_equals(elements.sticky.offsetLeft, nonStickyLeftX - stickyOffset);

}, 'after reaching the sticking point the sticky box should be offset');

test(() => {

  const elements = setupStickyTest('right', 25);

  elements.scroller.scrollLeft = 15;

  assert_equals(elements.sticky.offsetLeft, elements.container.offsetLeft);

}, 'the sticky box should not be pushed outside its containing block');

</script>