Mypal/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensu...

55 lines
1.9 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Test that the HeapAnalyses{Client,Worker} can take diffs between censuses.
function run_test() {
run_next_test();
}
const BREAKDOWN = {
by: "objectClass",
then: { by: "count", count: true, bytes: false },
other: { by: "count", count: true, bytes: false },
};
add_task(function* () {
const client = new HeapAnalysesClient();
const markers = [allocationMarker()];
const firstSnapshotFilePath = saveNewHeapSnapshot();
// Allocate and hold an additional AllocationMarker object so we can see it in
// the next heap snapshot.
markers.push(allocationMarker());
const secondSnapshotFilePath = saveNewHeapSnapshot();
yield client.readHeapSnapshot(firstSnapshotFilePath);
yield client.readHeapSnapshot(secondSnapshotFilePath);
ok(true, "Should have read both heap snapshot files");
const { delta } = yield client.takeCensusDiff(firstSnapshotFilePath,
secondSnapshotFilePath,
{ breakdown: BREAKDOWN });
equal(delta.AllocationMarker.count, 1,
"There exists one new AllocationMarker in the second heap snapshot");
const { delta: deltaTreeNode } = yield client.takeCensusDiff(firstSnapshotFilePath,
secondSnapshotFilePath,
{ breakdown: BREAKDOWN },
{ asTreeNode: true });
// Have to manually set these because symbol properties aren't structured
// cloned.
delta[CensusUtils.basisTotalBytes] = deltaTreeNode.totalBytes;
delta[CensusUtils.basisTotalCount] = deltaTreeNode.totalCount;
compareCensusViewData(BREAKDOWN, delta, deltaTreeNode,
"Returning delta-census as a tree node represents same data as the report");
client.destroy();
});