devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_03.js


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/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";

// Test that we can get the root of dominator trees.

function run_test() {
  const dominatorTree = saveHeapSnapshotAndComputeDominatorTree();
  equal(typeof dominatorTree.root, "number", "root should be a number");
  equal(
    Math.floor(dominatorTree.root),
    dominatorTree.root,
    "root should be an integer"
  );
  Assert.greaterOrEqual(dominatorTree.root, 0, "root should be positive");
  Assert.lessOrEqual(
    dominatorTree.root,
    Math.pow(2, 48),
    "root should be less than or equal to 2^48"
  );
  do_test_finished();
}