1 files changed, 55 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_perf-profiler-03.js b/devtools/server/tests/browser/browser_perf-profiler-03.js
new file mode 100644
index 0000000000..8550fea832
--- /dev/null
+++ b/devtools/server/tests/browser/browser_perf-profiler-03.js
@@ -0,0 +1,55 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if the built-in profiler module is not reactivated if no other
+ * consumer was using it over the remote debugger protocol, and ensures
+ * that the actor will work properly even in such cases (e.g. the Gecko Profiler
+ * addon was installed and automatically activated the profiler module).
+ */
+
+"use strict";
+
+const {
+  pmmIsProfilerActive,
+  pmmStartProfiler,
+  pmmInitWithBrowser,
+} = require("devtools/client/performance/test/helpers/profiler-mm-utils");
+
+add_task(async function() {
+  // Ensure the profiler is already running when the test starts.
+  pmmInitWithBrowser(gBrowser);
+  const entries = 1000000;
+  const interval = 1;
+  const features = ["js"];
+  await pmmStartProfiler({ entries, interval, features });
+
+  ok(
+    await pmmIsProfilerActive(),
+    "The built-in profiler module should still be active."
+  );
+
+  const target1 = await addTabTarget(MAIN_DOMAIN + "doc_perf.html");
+  const firstFront = await target1.getFront("performance");
+
+  await firstFront.startRecording();
+
+  const target2 = await addTabTarget(MAIN_DOMAIN + "doc_perf.html");
+  const secondFront = await target2.getFront("performance");
+  await secondFront.connect();
+
+  await target2.destroy();
+  ok(
+    await pmmIsProfilerActive(),
+    "The built-in profiler module should still be active."
+  );
+
+  await target1.destroy();
+  ok(
+    !(await pmmIsProfilerActive()),
+    "The built-in profiler module should have been automatically stopped."
+  );
+
+  gBrowser.removeCurrentTab();
+  gBrowser.removeCurrentTab();
+});