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Diffstat (limited to 'testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html')
-rw-r--r-- | testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html b/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html new file mode 100644 index 0000000000..ae1c946fa3 --- /dev/null +++ b/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html @@ -0,0 +1,41 @@ +<!doctype HTML> +<html> +<meta charset="utf8"> +<title>Content Visibility: ContentVisibilityAutoStateChange event.</title> +<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org"> +<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility"> +<meta name="assert" content="ContentVisibilityAutoStateChange does not fire on disconnected element"> + +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> + +<style> +.spacer { + height: 10000px; +} +#bottomdiv { + content-visibility: auto; +} +</style> + +<div class=spacer></div> +<div id=bottomdiv></div> + +<script> +promise_test(t => new Promise(async (resolve, reject) => { + await new Promise((waited, _) => { + requestAnimationFrame(() => requestAnimationFrame(waited)); + }); + + let observed = false; + bottomdiv.addEventListener("contentvisibilityautostatechange", () => { + reject("unexpected signal") + }); + + bottomdiv.remove() + requestAnimationFrame(() => requestAnimationFrame(resolve)); + +}), "ContentVisibilityAutoStateChange does not fire on disconnected element"); + +</script> + |