1 files changed, 21 insertions, 0 deletions
diff --git a/testing/web-platform/tests/browsing-topics/resources/fetch-topics-header-not-visible-in-service-worker-helper.tentative.https.html b/testing/web-platform/tests/browsing-topics/resources/fetch-topics-header-not-visible-in-service-worker-helper.tentative.https.html
new file mode 100644
index 0000000000..e9cb8144e0
--- /dev/null
+++ b/testing/web-platform/tests/browsing-topics/resources/fetch-topics-header-not-visible-in-service-worker-helper.tentative.https.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<body>
+  <script>
+    var current_url = window.location.href;
+    var fetch_url = current_url.substring(0, current_url.lastIndexOf("/")) + '/empty.html'
+
+    navigator.serviceWorker.addEventListener('message', e => {
+      if (e.data.fetchUrl == fetch_url) {
+        if (e.data.topicsHeader === 'null') {
+          window.opener.postMessage(
+            {testResult: 'Service worker intercepted no topics header'}, '*');
+        } else {
+          window.opener.postMessage(
+            {testResult: 'Service worker intercepted topics header'}, '*');
+        }
+      }
+    });
+
+    fetch(fetch_url, {browsingTopics: true});
+  </script>
+</body>