1 files changed, 15 insertions, 0 deletions
diff --git a/testing/web-platform/tests/speculation-rules/prerender/resources/referrer-test.js b/testing/web-platform/tests/speculation-rules/prerender/resources/referrer-test.js
new file mode 100644
index 0000000000..5091b6403c
--- /dev/null
+++ b/testing/web-platform/tests/speculation-rules/prerender/resources/referrer-test.js
@@ -0,0 +1,15 @@
+async function referrer_test(expected, uid) {
+  const bc = new PrerenderChannel('prerender-channel', uid);
+
+  const gotMessage = new Promise(resolve => {
+    bc.addEventListener('message', e => {
+      resolve(e.data);
+    }, {once: true});
+  });
+
+  // Start prerendering a page that will echo its referrer.
+  startPrerendering(`resources/echo-referrer.py?uid=${uid}`);
+
+  const result = await gotMessage;
+  assert_equals(result.referrer, expected, 'referrer');
+}