1 files changed, 23 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fenced-frame/resources/badging-sw.js b/testing/web-platform/tests/fenced-frame/resources/badging-sw.js
new file mode 100644
index 0000000000..5bc3c9a190
--- /dev/null
+++ b/testing/web-platform/tests/fenced-frame/resources/badging-sw.js
@@ -0,0 +1,23 @@
+self.addEventListener('install', e => e.waitUntil(skipWaiting()));
+self.addEventListener('activate', e => e.waitUntil(clients.claim()));
+
+self.addEventListener('message', async e => {
+  const method = e.data;
+
+  let promise;
+  if (method === 'setAppBadge') {
+    promise = self.navigator.setAppBadge(1);
+  } else if (method === 'clearAppBadge') {
+    promise = self.navigator.clearAppBadge();
+  } else {
+    promise = Promise.resolve();
+  }
+
+  const error = await promise
+                      .then(() => {
+                        return `[Badging API ${method}] Unexpectedly started`;
+                      })
+                      .catch((e) => e);
+
+  e.source.postMessage(error);
+});