1 files changed, 46 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 000000000..e6a9a54cf
--- /dev/null
+++ b/devtools/shared/worker/tests/browser/browser_worker-02.js
@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests errors are handled properly by the DevToolsWorker.
+
+const { DevToolsWorker } = require("devtools/shared/worker/worker");
+const WORKER_URL =
+  "resource://devtools/client/shared/widgets/GraphsWorker.js";
+
+add_task(function* () {
+  try {
+    let workerNotFound = 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");
+  }
+
+  let worker = new DevToolsWorker(WORKER_URL);
+  try {
+    // plotTimestampsGraph requires timestamp, interval an duration props on the object
+    // passed in so there should be an error thrown in the worker
+    let results = yield worker.performTask("plotTimestampsGraph", {});
+    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 {
+    let results = yield 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 {
+    let results = yield worker.performTask("plotTimestampsGraph", {
+      timestamps: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
+      interval: 1,
+      duration: 1
+    });
+    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");
+  }
+});