devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_05.js


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/* 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();
}