2 files changed, 53 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/fetch-later/resources/fetch-later.html b/testing/web-platform/tests/fetch/fetch-later/resources/fetch-later.html
new file mode 100644
index 0000000000..b569e1a076
--- /dev/null
+++ b/testing/web-platform/tests/fetch/fetch-later/resources/fetch-later.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<head>
+</head>
+<body>
+  <script>
+    const PARAMS = new URL(location.href).searchParams;
+    const TARGET_URL= decodeURIComponent(PARAMS.get('url')) || '';
+
+    fetchLater(TARGET_URL, {activateAfter: 0});
+    if (window.opener) {
+      window.opener.postMessage("done", "*");
+    }
+  </script>
+</body>
diff --git a/testing/web-platform/tests/fetch/fetch-later/resources/header-referrer-helper.js b/testing/web-platform/tests/fetch/fetch-later/resources/header-referrer-helper.js
new file mode 100644
index 0000000000..374097614a
--- /dev/null
+++ b/testing/web-platform/tests/fetch/fetch-later/resources/header-referrer-helper.js
@@ -0,0 +1,39 @@
+'use strict';
+
+// https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer
+const REFERRER_ORIGIN = self.location.origin + '/';
+const REFERRER_URL = self.location.href;
+
+function testReferrerHeader(id, host, expectedReferrer) {
+  const url = `${
+      host}/beacon/resources/inspect-header.py?header=referer&cmd=put&id=${id}`;
+
+  promise_test(t => {
+    fetchLater(url, {activateAfter: 0});
+    return pollResult(expectedReferrer, id).then(result => {
+      assert_equals(result, expectedReferrer, 'Correct referrer header result');
+    });
+  }, `Test referer header ${host}`);
+}
+
+function pollResult(expectedReferrer, id) {
+  const checkUrl =
+      `/beacon/resources/inspect-header.py?header=referer&cmd=get&id=${id}`;
+
+  return new Promise(resolve => {
+    function checkResult() {
+      fetch(checkUrl).then(response => {
+        assert_equals(
+            response.status, 200, 'Inspect header response\'s status is 200');
+        let result = response.headers.get('x-request-referer');
+
+        if (result != undefined) {
+          resolve(result);
+        } else {
+          step_timeout(checkResult.bind(this), 100);
+        }
+      });
+    }
+    checkResult();
+  });
+}