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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/intersection-observer/zero-area-element-visible.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/intersection-observer/zero-area-element-visible.html')
| -rw-r--r-- | testing/web-platform/tests/intersection-observer/zero-area-element-visible.html | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/zero-area-element-visible.html b/testing/web-platform/tests/intersection-observer/zero-area-element-visible.html new file mode 100644 index 0000000000..b012b65c18 --- /dev/null +++ b/testing/web-platform/tests/intersection-observer/zero-area-element-visible.html @@ -0,0 +1,45 @@ +<!DOCTYPE html> +<meta name="viewport" content="width=device-width,initial-scale=1"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="./resources/intersection-observer-test-utils.js"></script> + +<style> +pre, #log { + position: absolute; + top: 0; + left: 200px; +} +#target { + width: 0px; + height: 0px; +} +#container { + overflow: clip; +} +</style> + +<div id="container"> + <div id='target'></div> +</div> + +<script> +var entries = []; + +runTestCycle(function() { + var target = document.getElementById('target'); + assert_true(!!target, "target exists"); + var observer = new IntersectionObserver(function(changes) { + entries = entries.concat(changes) + }); + observer.observe(target); + entries = entries.concat(observer.takeRecords()); + assert_equals(entries.length, 0, "No initial notifications."); + runTestCycle(step0, "First rAF should generate a notification."); +}, "Ensure that a zero-area target intersecting root generates a notification with intersectionRatio == 1"); + +function step0() { + assert_equals(entries.length, 1, "One notification."); + assert_equals(entries[0].intersectionRatio, 1, "intersectionRatio == 1"); +} +</script> |