1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/content-visibility-hidden.html b/testing/web-platform/tests/layout-instability/content-visibility-hidden.html
new file mode 100644
index 0000000000..f84cc2543e
--- /dev/null
+++ b/testing/web-platform/tests/layout-instability/content-visibility-hidden.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Layout Instability: content-visibility:hidden content</title>
+<link rel="help" href="https://wicg.github.io/layout-instability/" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/util.js"></script>
+<script>
+// These scripts need to be before the contents because we need to ensure no
+// layout shifts during page load.
+promise_test(async () => {
+  const watcher = new ScoreWatcher;
+
+  // Wait for the initial render to complete.
+  await waitForAnimationFrames(2);
+  assert_equals(watcher.score, 0);
+}, 'on-screen content-visibility:auto');
+</script>
+<style>
+  #target {
+    content-visibility: hidden;
+    contain-intrinsic-size: 1px;
+    width: 100px;
+  }
+</style>
+<div id=target>
+  <div style="width: 100px; height: 100px; background: blue"></div>
+</div>