1 files changed, 27 insertions, 0 deletions
diff --git a/dom/tests/mochitest/fetch/reroute.js b/dom/tests/mochitest/fetch/reroute.js
new file mode 100644
index 0000000000..a4f309d780
--- /dev/null
+++ b/dom/tests/mochitest/fetch/reroute.js
@@ -0,0 +1,27 @@
+onfetch = function (e) {
+  if (e.request.url.includes("Referer")) {
+    // Silently rewrite the referrer so the referrer test passes since the
+    // document/worker isn't aware of this service worker.
+    var url = e.request.url.substring(0, e.request.url.indexOf("?"));
+    url += "?headers=" + JSON.stringify({ Referer: self.location.href });
+
+    e.respondWith(
+      e.request.text().then(function (text) {
+        var body = text === "" ? undefined : text;
+        var mode =
+          e.request.mode == "navigate" ? "same-origin" : e.request.mode;
+        return fetch(url, {
+          method: e.request.method,
+          headers: e.request.headers,
+          body,
+          mode,
+          credentials: e.request.credentials,
+          redirect: e.request.redirect,
+          cache: e.request.cache,
+        });
+      })
+    );
+    return;
+  }
+  e.respondWith(fetch(e.request));
+};