1 files changed, 33 insertions, 0 deletions
diff --git a/toolkit/components/url-classifier/tests/mochitest/sw_register.html b/toolkit/components/url-classifier/tests/mochitest/sw_register.html
new file mode 100644
index 0000000000..2a536128fa
--- /dev/null
+++ b/toolkit/components/url-classifier/tests/mochitest/sw_register.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<script>
+function waitForState(worker, state, context) {
+  return new Promise(resolve => {
+    function onStateChange() {
+      if (worker.state === state) {
+        worker.removeEventListener("statechange", onStateChange);
+        resolve(context);
+      }
+    }
+
+    // First add an event listener, so we won't miss any change that happens
+    // before we check the current state.
+    worker.addEventListener("statechange", onStateChange);
+
+    // Now check if the worker is already in the desired state.
+    onStateChange();
+  });
+}
+
+(async function () {
+  dump("[Dimi]register sw...\n");
+  let reg = await navigator.serviceWorker.register("sw_worker.js", {scope: "."});
+  await waitForState(reg.installing, "activated", reg);
+  window.parent.postMessage({status: "registrationdone"}, "*");
+})();
+
+</script>
+</head>
+<html>