1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/client/performance-new/test/browser/browser_aboutprofiling-threads.js b/devtools/client/performance-new/test/browser/browser_aboutprofiling-threads.js
new file mode 100644
index 0000000000..69b266207f
--- /dev/null
+++ b/devtools/client/performance-new/test/browser/browser_aboutprofiling-threads.js
@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+add_task(async function test() {
+  info("Test that about:profiling can be loaded, and the threads changed.");
+
+  await withAboutProfiling(async document => {
+    const geckoMainInput = await getNearestInputFromText(document, "GeckoMain");
+
+    ok(
+      geckoMainInput.checked,
+      "The GeckoMain thread starts checked by default."
+    );
+
+    ok(
+      activeConfigurationHasThread("GeckoMain"),
+      "The profiler was started with the GeckoMain thread"
+    );
+
+    info("Click the GeckoMain checkbox.");
+    geckoMainInput.click();
+    ok(!geckoMainInput.checked, "The GeckoMain thread UI is toggled off.");
+
+    ok(
+      !activeConfigurationHasThread("GeckoMain"),
+      "The profiler was not started with the GeckoMain thread."
+    );
+  });
+});