test_DominatorTree_04.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 retained sizes of dominator trees.

function run_test() {

  const dominatorTree = saveHeapSnapshotAndComputeDominatorTree();

  equal(

    typeof dominatorTree.getRetainedSize,

    "function",

    "getRetainedSize should be a function"

);

  const size = dominatorTree.getRetainedSize(dominatorTree.root);

  ok(size, "should get a size for the root");

  equal(typeof size, "number", "retained sizes should be a number");

  equal(Math.floor(size), size, "size should be an integer");

  Assert.greater(size, 0, "size should be positive");

  Assert.lessOrEqual(

    size,

    Math.pow(2, 64),

    "size should be less than or equal to 2^64"

);

  const bad = dominatorTree.getRetainedSize(1);

  equal(bad, null, "null is returned for unknown node ids");

  do_test_finished();