1 files changed, 31 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_01.js b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_01.js
new file mode 100644
index 000000000..f3b3090b0
--- /dev/null
+++ b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_01.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// HeapSnapshot.prototype.takeCensus returns a value of an appropriate
+// shape. Ported from js/src/jit-tests/debug/Memory-takeCensus-01.js
+
+function run_test() {
+  var dbg = new Debugger;
+
+  function checkProperties(census) {
+    equal(typeof census, "object");
+    for (prop of Object.getOwnPropertyNames(census)) {
+      var desc = Object.getOwnPropertyDescriptor(census, prop);
+      equal(desc.enumerable, true);
+      equal(desc.configurable, true);
+      equal(desc.writable, true);
+      if (typeof desc.value === "object")
+        checkProperties(desc.value);
+      else
+        equal(typeof desc.value, "number");
+    }
+  }
+
+  checkProperties(saveHeapSnapshotAndTakeCensus(dbg));
+
+  var g = newGlobal();
+  dbg.addDebuggee(g);
+  checkProperties(saveHeapSnapshotAndTakeCensus(dbg));
+
+  do_test_finished();
+}