1 files changed, 24 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_05.js b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_05.js
new file mode 100644
index 000000000..da6067624
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+++ b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_05.js
@@ -0,0 +1,24 @@
+/* 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
+
+function run_test() {
+  var g = newGlobal();
+  var 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();
+}