1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/speculation-rules/prerender/fetch-intercepted-by-service-worker.https.html b/testing/web-platform/tests/speculation-rules/prerender/fetch-intercepted-by-service-worker.https.html
new file mode 100644
index 0000000000..68db1b537f
--- /dev/null
+++ b/testing/web-platform/tests/speculation-rules/prerender/fetch-intercepted-by-service-worker.https.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<title>Service worker intercepts a fetch request coming from a prerendered page</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/utils.js"></script>
+<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src="../resources/utils.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<script>
+setup(() => assertSpeculationRulesIsSupported());
+
+promise_test(async t => {
+  const uid = token();
+
+  const PAGE_URL = `resources/fetch-intercepted-by-service-worker.html?uid=${uid}`;
+  const WORKER_URL = 'resources/fetch-intercept-worker.js';
+
+  const registration =
+      await service_worker_unregister_and_register(t, WORKER_URL, PAGE_URL);
+  t.add_cleanup(() => registration.unregister());
+  await wait_for_state(t, registration.installing, 'activated');
+
+  const bc = new PrerenderChannel('prerender-channel', uid);
+  t.add_cleanup(_ => bc.close());
+
+  const gotMessage = new Promise(resolve => {
+    bc.addEventListener('message', e => {
+      resolve(e.data);
+    }, {
+      once: true
+    });
+  });
+
+  startPrerendering(PAGE_URL);
+
+  const result = await gotMessage;
+  assert_equals(
+    result, 'intercepted by service worker',
+    "fetch() should go through a service worker's fetch event handler");
+}, 'fetch() in a prerendering page should go through a service worker');
+</script>