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Automatic update from web-platform-testsPort nested sticky tests from reftests to JS tests Bug: 699244 Change-Id: Ia85a44be9d9f7b0d0db382892520f2755523f514 Reviewed-on: https://chromium-review.googlesource.com/980236 Reviewed-by: Robert Flack <flackr@chromium.org> Commit-Queue: Stephen McGruer <smcgruer@chromium.org> Cr-Commit-Position: refs/heads/master@{#546172} wpt-commits: 8214a83ae15810425ebbdb305ba5a0a746f4b36e wpt-pr: 10182 wpt-commits: 8214a83ae15810425ebbdb305ba5a0a746f4b36e wpt-pr: 10182
68 lines
2.8 KiB
HTML
68 lines
2.8 KiB
HTML
<!DOCTYPE html>
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<title>Nested bottom-constrained position:sticky elements should render correctly</title>
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<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
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<meta name="assert" content="This test checks that nested position:sticky elements with a bottom constraint render correctly" />
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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/sticky-util.js"></script>
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<body></body>
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<script>
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test(() => {
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const elements = setupNestedStickyTest('bottom', 25, 35);
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elements.scroller.scrollTop = 300;
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const nonStickyTopY = elements.container.offsetTop +
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elements.filler.clientHeight;
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assert_equals(elements.sticky.offsetTop, nonStickyTopY);
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// The inner sticky should not be offset from the outer.
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const nonStickyInnerTopY = elements.sticky.clientHeight -
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elements.innerSticky.clientHeight;
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assert_equals(elements.innerSticky.offsetTop, nonStickyInnerTopY);
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}, 'before reaching the sticking point, neither sticky box should be offset');
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test(() => {
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const elements = setupNestedStickyTest('bottom', 25, 50);
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elements.scroller.scrollTop = 150;
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const nonStickyTopY = elements.container.offsetTop +
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elements.filler.clientHeight;
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assert_equals(elements.sticky.offsetTop, nonStickyTopY);
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assert_equals(elements.innerSticky.offsetTop, 35);
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}, 'the inner sticky can stick before the outer one if necessary');
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test(() => {
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const elements = setupNestedStickyTest('bottom', 25, 35);
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elements.scroller.scrollTop = 100;
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const nonStickyTopY = elements.container.offsetTop +
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elements.filler.clientHeight;
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const nonStickyBottomY = nonStickyTopY + elements.sticky.clientHeight;
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const targetBottomY = elements.scroller.clientHeight +
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elements.scroller.scrollTop - 25;
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const stickyOffset = nonStickyBottomY - targetBottomY;
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assert_equals(elements.sticky.offsetTop, nonStickyTopY - stickyOffset);
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// The inner sticky has similar math, but its offsetTop is relative to the
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// sticky element and in this test is (height - the difference between the
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// top values).
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assert_equals(elements.innerSticky.offsetTop, 40);
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}, 'both sticky boxes can be stuck at the same time');
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test(() => {
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const elements = setupNestedStickyTest('bottom', 25, 35);
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elements.scroller.scrollTop = 0;
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assert_equals(elements.sticky.offsetTop, elements.container.offsetTop);
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assert_equals(elements.innerSticky.offsetTop, 0);
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}, 'neither sticky can escape their containing block');
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test(() => {
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const elements = setupNestedStickyTest('bottom', 25, 500);
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elements.scroller.scrollTop = 200;
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// It doesn't matter how big the inner sticky offset is, it cannot escape its
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// containing block (the outer sticky).
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assert_equals(elements.innerSticky.offsetTop, 0);
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}, 'the inner sticky cannot be pushed outside the outer sticky');
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</script>
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