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Diffstat (limited to 'testing/web-platform/tests/css/css-highlight-api/painting/custom-highlight-painting-overlapping-highlights-001.html')
-rw-r--r-- | testing/web-platform/tests/css/css-highlight-api/painting/custom-highlight-painting-overlapping-highlights-001.html | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-highlight-api/painting/custom-highlight-painting-overlapping-highlights-001.html b/testing/web-platform/tests/css/css-highlight-api/painting/custom-highlight-painting-overlapping-highlights-001.html new file mode 100644 index 0000000000..0b380574bc --- /dev/null +++ b/testing/web-platform/tests/css/css-highlight-api/painting/custom-highlight-painting-overlapping-highlights-001.html @@ -0,0 +1,43 @@ +<!DOCTYPE html> +<meta charset="UTF-8"> +<title>CSS Highlight API Test: Overlapping Highlights</title> +<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/"> +<link rel="match" href="custom-highlight-painting-overlapping-highlights-001-ref.html"> +<meta name="assert" value="UAs must not define any styles for custom highlight pseudo-elements in the default UA stylesheet."> +<style> + body { + font-size: 3em; + font-weight: bolder; + } + #affected1::highlight(highlight1) { + color: red; + } + #affected2::highlight(highlight2) { + color: green; + } +</style> +<body><span id="affected1">This should have 'highlight1' style (red).</span><span id="affected2">This should have 'highlight2' style (green).</span> +<script> + /* + This test is meant to verify that: + - UAs must not define any styles for custom highlight pseudo-elements in + the default UA stylesheet. + - UAs do not paint unstyled custom highlights. + + In this test, highlight2 has higher priority because it was registered + later, so it is painted over highlight1. This includes painting for + span#affected1, where there is no CSS rule for highlight2. But since unstyled + custom highlights are not painted, span#affected1 is still painted with the + styles for highlight1. + + See https://drafts.csswg.org/css-highlight-api-1/#default-styles + */ + + const node = document.body; + let r = new Range(); + r.setStart(node, 0); + r.setEnd(node, 2); + + CSS.highlights.set("highlight1", new Highlight(r)); + CSS.highlights.set("highlight2", new Highlight(r)); +</script>
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