1 files changed, 12 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/metadata/resources/unload-with-beacon.html b/testing/web-platform/tests/fetch/metadata/resources/unload-with-beacon.html
new file mode 100644
index 0000000000..b00c9a5776
--- /dev/null
+++ b/testing/web-platform/tests/fetch/metadata/resources/unload-with-beacon.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<script>
+  // When told, register an unload handler that will trigger a beacon to the
+  // URL given by the sender of the message.
+  window.addEventListener('message', e => {
+      var url = e.data;
+      window.addEventListener('unload', () => {
+          navigator.sendBeacon(url, 'blah');
+      });
+      window.parent.postMessage('navigate-away', '*');
+  });
+</script>