Mypal/dom/heapsnapshot/tests/unit/test_DominatorTree_04.js

23 lines
867 B
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// 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");
ok(size > 0, "size should be positive");
ok(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();
}