1 files changed, 83 insertions, 0 deletions
diff --git a/devtools/shared/worker/tests/browser/browser_worker-02.js b/devtools/shared/worker/tests/browser/browser_worker-02.js
new file mode 100644
index 0000000000..80c50cf887
--- /dev/null
+++ b/devtools/shared/worker/tests/browser/browser_worker-02.js
@@ -0,0 +1,83 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests errors are handled properly by the DevToolsWorker.
+
+const {
+  DevToolsWorker,
+} = require("resource://devtools/shared/worker/worker.js");
+
+const blob = new Blob(
+  [
+    `
+importScripts("resource://gre/modules/workers/require.js");
+const { createTask } = require("resource://devtools/shared/worker/helper.js");
+
+createTask(self, "myTask", function({
+  shouldThrow,
+} = {}) {
+  if (shouldThrow) {
+    throw new Error("err");
+  }
+
+  return "OK";
+});
+    `,
+  ],
+  { type: "application/javascript" }
+);
+
+add_task(async function () {
+  try {
+    new DevToolsWorker("resource://i/dont/exist.js");
+    ok(false, "Creating a DevToolsWorker with an invalid URL throws");
+  } catch (e) {
+    ok(true, "Creating a DevToolsWorker with an invalid URL throws");
+  }
+
+  const WORKER_URL = URL.createObjectURL(blob);
+  const worker = new DevToolsWorker(WORKER_URL);
+  try {
+    await worker.performTask("myTask", { shouldThrow: true });
+    ok(
+      false,
+      "DevToolsWorker returns a rejected promise when an error occurs in the worker"
+    );
+  } catch (e) {
+    ok(
+      true,
+      "DevToolsWorker returns a rejected promise when an error occurs in the worker"
+    );
+  }
+
+  try {
+    await worker.performTask("not a real task");
+    ok(
+      false,
+      "DevToolsWorker returns a rejected promise when task does not exist"
+    );
+  } catch (e) {
+    ok(
+      true,
+      "DevToolsWorker returns a rejected promise when task does not exist"
+    );
+  }
+
+  worker.destroy();
+  try {
+    await worker.performTask("myTask");
+    ok(
+      false,
+      "DevToolsWorker rejects when performing a task on a destroyed worker"
+    );
+  } catch (e) {
+    ok(
+      true,
+      "DevToolsWorker rejects when performing a task on a destroyed worker"
+    );
+  }
+
+  URL.revokeObjectURL(WORKER_URL);
+});