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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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42
devtools/shared/heapsnapshot/tests/unit/test_HeapSnapshot_describeNode_01.js Normal file
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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Test that we can describe nodes with a breakdown.
function run_test() {
const path = saveNewHeapSnapshot();
const snapshot = ChromeUtils.readHeapSnapshot(path);
ok(snapshot.describeNode);
equal(typeof snapshot.describeNode, "function");
const dt = snapshot.computeDominatorTree();
let threw = false;
try {
snapshot.describeNode(undefined, dt.root);
} catch (_) {
threw = true;
}
ok(threw, "Should require a breakdown");
const breakdown = {
by: "coarseType",
objects: { by: "objectClass" },
scripts: { by: "internalType" },
strings: { by: "internalType" },
other: { by: "internalType" }
};
threw = false;
try {
snapshot.describeNode(breakdown, 0);
} catch (_) {
threw = true;
}
ok(threw, "Should throw when given an invalid node id");
const description = snapshot.describeNode(breakdown, dt.root);
ok(description);
ok(description.other);
ok(description.other["JS::ubi::RootList"]);
}