1 files changed, 47 insertions, 0 deletions
diff --git a/devtools/client/performance-new/test/browser/browser_devtools-presets.js b/devtools/client/performance-new/test/browser/browser_devtools-presets.js
new file mode 100644
index 0000000000..383ca57088
--- /dev/null
+++ b/devtools/client/performance-new/test/browser/browser_devtools-presets.js
@@ -0,0 +1,47 @@
+/* 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 presets configure the profiler");
+
+  if (!Services.profiler.GetFeatures().includes("stackwalk")) {
+    ok(true, "This platform does not support stackwalking, skip this test.");
+    return;
+  }
+
+  // This test assumes that the Web Developer preset is set by default, which is
+  // not the case on Nightly and custom builds.
+  BackgroundJSM.changePreset(
+    "aboutprofiling",
+    "web-developer",
+    Services.profiler.GetFeatures()
+  );
+
+  await withDevToolsPanel(async document => {
+    {
+      const presets = await getNearestInputFromText(document, "Settings");
+
+      is(presets.value, "web-developer", "The presets default to webdev mode.");
+      ok(
+        !(await devToolsActiveConfigurationHasFeature(document, "stackwalk")),
+        "Stack walking is not used in Web Developer mode."
+      );
+    }
+
+    {
+      const presets = await getNearestInputFromText(document, "Settings");
+      setReactFriendlyInputValue(presets, "firefox-platform");
+      is(
+        presets.value,
+        "firefox-platform",
+        "The preset was changed to Firefox Platform"
+      );
+      ok(
+        await devToolsActiveConfigurationHasFeature(document, "stackwalk"),
+        "Stack walking is used in Firefox Platform mode."
+      );
+    }
+  });
+});