1 files changed, 45 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/fetch/imagecache-maxage/maxage_test.js b/dom/serviceworkers/test/fetch/imagecache-maxage/maxage_test.js
new file mode 100644
index 0000000000..62707566ea
--- /dev/null
+++ b/dom/serviceworkers/test/fetch/imagecache-maxage/maxage_test.js
@@ -0,0 +1,45 @@
+function synthesizeImage(suffix) {
+  // Serve image-20px for the first page, and image-40px for the second page.
+  return clients
+    .matchAll()
+    .then(clients => {
+      var url = "image-20px.png";
+      clients.forEach(client => {
+        if (client.url.indexOf("?new") > 0) {
+          url = "image-40px.png";
+        }
+        client.postMessage({ suffix, url });
+      });
+      return fetch(url);
+    })
+    .then(response => {
+      return response.arrayBuffer();
+    })
+    .then(ab => {
+      var headers;
+      if (suffix == "") {
+        headers = {
+          "Content-Type": "image/png",
+          Date: "Tue, 1 Jan 1990 01:02:03 GMT",
+          "Cache-Control": "max-age=1",
+        };
+      } else {
+        headers = {
+          "Content-Type": "image/png",
+          "Cache-Control": "no-cache",
+        };
+      }
+      return new Response(ab, {
+        status: 200,
+        headers,
+      });
+    });
+}
+
+self.addEventListener("fetch", function(event) {
+  if (event.request.url.includes("image.png")) {
+    event.respondWith(synthesizeImage(""));
+  } else if (event.request.url.includes("image2.png")) {
+    event.respondWith(synthesizeImage("2"));
+  }
+});