1 files changed, 56 insertions, 0 deletions
diff --git a/dom/quota/test/modules/system/worker/head.js b/dom/quota/test/modules/system/worker/head.js
new file mode 100644
index 0000000000..c415e0c56b
--- /dev/null
+++ b/dom/quota/test/modules/system/worker/head.js
@@ -0,0 +1,56 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// eslint-disable-next-line mozilla/no-define-cc-etc
+const Cr = {
+  NS_ERROR_NOT_IMPLEMENTED: 2147500033,
+};
+
+function add_task(func) {
+  if (!add_task.tasks) {
+    add_task.tasks = [];
+    add_task.index = 0;
+  }
+
+  add_task.tasks.push(func);
+}
+
+addEventListener("message", async function onMessage(event) {
+  function info(message) {
+    postMessage({ op: "info", message });
+  }
+
+  function executeSoon(callback) {
+    const channel = new MessageChannel();
+    channel.port1.postMessage("");
+    channel.port2.onmessage = function () {
+      callback();
+    };
+  }
+
+  function runNextTest() {
+    if (add_task.index < add_task.tasks.length) {
+      const task = add_task.tasks[add_task.index++];
+      info("add_task | Entering test " + task.name);
+      task()
+        .then(function () {
+          executeSoon(runNextTest);
+          info("add_task | Leaving test " + task.name);
+        })
+        .catch(function (ex) {
+          postMessage({ op: "failure", message: "" + ex });
+        });
+    } else {
+      postMessage({ op: "finish" });
+    }
+  }
+
+  removeEventListener("message", onMessage);
+
+  const data = event.data;
+  importScripts(...data);
+
+  executeSoon(runNextTest);
+});