1 files changed, 47 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_perf-03.js b/devtools/server/tests/browser/browser_perf-03.js
new file mode 100644
index 0000000000..9a682e3374
--- /dev/null
+++ b/devtools/server/tests/browser/browser_perf-03.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";
+
+/**
+ * Test that the profiler emits events when private browsing windows are opened
+ * and closed.
+ */
+add_task(async function() {
+  const { front, client } = await initPerfFront();
+
+  is(
+    await front.isLockedForPrivateBrowsing(),
+    false,
+    "The profiler is not locked for private browsing."
+  );
+
+  // Open up a new private browser window, and assert the correct events are fired.
+  const profilerLocked = once(front, "profile-locked-by-private-browsing");
+  const privateWindow = await BrowserTestUtils.openNewBrowserWindow({
+    private: true,
+  });
+  await profilerLocked;
+  is(
+    await front.isLockedForPrivateBrowsing(),
+    true,
+    "The profiler is now locked because of private browsing."
+  );
+
+  // Close the private browser window, and assert the correct events are fired.
+  const profilerUnlocked = once(
+    front,
+    "profile-unlocked-from-private-browsing"
+  );
+  await BrowserTestUtils.closeWindow(privateWindow);
+  await profilerUnlocked;
+  is(
+    await front.isLockedForPrivateBrowsing(),
+    false,
+    "The profiler is available again after closing the private browsing window."
+  );
+
+  // Clean up.
+  await front.destroy();
+  await client.close();
+});