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-rw-r--r--testing/web-platform/tests/intersection-observer/resources/same-origin-grand-child-iframe.html17
1 files changed, 17 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/resources/same-origin-grand-child-iframe.html b/testing/web-platform/tests/intersection-observer/resources/same-origin-grand-child-iframe.html
new file mode 100644
index 0000000000..0a1426ef02
--- /dev/null
+++ b/testing/web-platform/tests/intersection-observer/resources/same-origin-grand-child-iframe.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<!--
+ target should be fully vertically in-viewport as 100px is way less than the
+ default iframe height.
+
+ right: 0 makes sure that we're occluded by 8px by the intermediate iframe.
+-->
+<div id="target" style="width: 100px; height: 100px; position: absolute; right: 0"></div>
+<script>
+const observer = new IntersectionObserver(records => {
+ if (records[0].isIntersecting) {
+ let { rootBounds, intersectionRect } = records[0];
+ window.top.postMessage({ rootBounds, intersectionRect }, "*");
+ }
+}, {});
+observer.observe(document.getElementById("target"));
+</script>