1 files changed, 35 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_markers-cycle-collection.js b/devtools/server/tests/browser/browser_markers-cycle-collection.js
new file mode 100644
index 0000000000..40c5922c5c
--- /dev/null
+++ b/devtools/server/tests/browser/browser_markers-cycle-collection.js
@@ -0,0 +1,35 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test that we get "nsCycleCollector::Collect" and
+ * "nsCycleCollector::ForgetSkippable" markers when we force cycle collection.
+ */
+"use strict";
+
+add_task(async function() {
+  // This test runs very slowly on linux32 debug EC2 instances.
+  requestLongerTimeout(2);
+
+  const target = await addTabTarget(MAIN_DOMAIN + "doc_force_cc.html");
+  const front = await target.getFront("performance");
+  const rec = await front.startRecording({ withMarkers: true });
+
+  const markers = await waitForMarkerType(front, [
+    "nsCycleCollector::Collect",
+    "nsCycleCollector::ForgetSkippable",
+  ]);
+  await front.stopRecording(rec);
+
+  ok(
+    markers.some(m => m.name === "nsCycleCollector::Collect"),
+    "got some nsCycleCollector::Collect markers"
+  );
+  ok(
+    markers.some(m => m.name === "nsCycleCollector::ForgetSkippable"),
+    "got some nsCycleCollector::Collect markers"
+  );
+
+  await target.destroy();
+  gBrowser.removeCurrentTab();
+});