1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_05.js b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_05.js
new file mode 100644
index 0000000000..22c5324c68
--- /dev/null
+++ b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_05.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that HeapSnapshot.prototype.takeCensus finds cross compartment
+// wrapper GC roots.
+//
+// Ported from js/src/jit-test/tests/debug/Memory-takeCensus-05.js
+
+/* eslint-disable strict */
+function run_test() {
+  const g = newGlobal();
+  const dbg = new Debugger(g);
+
+  equal(
+    "AllocationMarker" in saveHeapSnapshotAndTakeCensus(dbg).objects,
+    false,
+    "No allocation markers should exist in the census."
+  );
+
+  this.ccw = g.allocationMarker();
+
+  const census = saveHeapSnapshotAndTakeCensus(dbg);
+  equal(
+    census.objects.AllocationMarker.count,
+    1,
+    "Should have one allocation marker in the census, because there " +
+      "is one cross-compartment wrapper referring to it."
+  );
+
+  do_test_finished();
+}