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Diffstat (limited to 'testing/web-platform/tests/intersection-observer/scroll-margin-not-contained.html')
-rw-r--r-- | testing/web-platform/tests/intersection-observer/scroll-margin-not-contained.html | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/scroll-margin-not-contained.html b/testing/web-platform/tests/intersection-observer/scroll-margin-not-contained.html new file mode 100644 index 0000000000..b16d3471e6 --- /dev/null +++ b/testing/web-platform/tests/intersection-observer/scroll-margin-not-contained.html @@ -0,0 +1,40 @@ +<!DOCTYPE html> +<meta name="viewport" content="width=device-width,initial-scale=1"> +<link rel="help" href="https://www.w3.org/TR/intersection-observer/#dom-intersectionobserver-scrollmargin"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="./resources/intersection-observer-test-utils.js"></script> + +<style> +#scroller { width: 100px; height: 100px; overflow: hidden; background-color: gray; position: absolute; } +#target { width: 50px; height: 50px; background-color: green; } +</style> + +<div id=root> + <div id=scroller> + <div id=target></div> + </div> +</div> + +<script> +let entries = []; + +window.onload = function() { + runTestCycle(testIntersection, "Test scroll margin intersection"); + + const observer = new IntersectionObserver( + es => entries = entries.concat(es), + { + root: document.querySelector("#root"), + scrollMargin: "10px" + } + ); + observer.observe(target); +}; + +function testIntersection() { + assert_equals(entries.length, 1, "IntersectionObserverEntryCount"); + // Not insecting because root is not in the containing block chain of target. + assert_false(entries[0].isIntersecting, "isIntersecting"); +} +</script> |