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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html b/testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html new file mode 100644 index 0000000000..76a4952383 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/abspos-containing-block-outside-scroller.html @@ -0,0 +1,55 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + +body { margin: 0; } +#scroller { overflow: scroll; width: 500px; height: 400px; } +#space { height: 1000px; } +#abs { + position: absolute; background-color: red; + width: 100px; height: 100px; + left: 25px; top: 25px; +} +#rel { + position: relative; background-color: green; + left: 50px; top: 100px; width: 100px; height: 75px; +} + +</style> +<div id="scroller"> + <div id="space"> + <div id="abs"></div> + <div id="before"></div> + <div id="rel"></div> + </div> +</div> +<script> + +// Tests that anchor node selection skips an absolute-positioned descendant of +// the scroller if and only if its containing block is outside the scroller. + +test(() => { + var scroller = document.querySelector("#scroller"); + var abs = document.querySelector("#abs"); + var before = document.querySelector("#before"); + var rel = document.querySelector("#rel"); + + // We should not anchor to #abs, because it does not move with the scroller. + scroller.scrollTop = 25; + before.style.height = "25px"; + assert_equals(scroller.scrollTop, 50); + + // Reset, make #scroller a containing block. + before.style.height = "0"; + scroller.scrollTop = 0; + scroller.style.position = "relative"; + + // This time we should anchor to #abs. + scroller.scrollTop = 25; + before.style.height = "25px"; + assert_equals(scroller.scrollTop, 25); + +}, "Abs-pos descendant with containing block outside the scroller."); + +</script> |