Mypal/dom/heapsnapshot/tests/unit/test_DominatorTree_01.js

24 lines
594 B
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Sanity test that we can compute dominator trees.
function run_test() {
const path = ChromeUtils.saveHeapSnapshot({ runtime: true });
const snapshot = ChromeUtils.readHeapSnapshot(path);
const dominatorTree = snapshot.computeDominatorTree();
ok(dominatorTree);
ok(dominatorTree instanceof DominatorTree);
let threw = false;
try {
new DominatorTree();
} catch (e) {
threw = true;
}
ok(threw, "Constructor shouldn't be usable");
do_test_finished();
}