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Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: devtools/shared/heapsnapshot/tests/xpcshell/xpcshell.toml
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Test that the HeapAnalyses{Client,Worker} can get census individuals.
const COUNT = { by: "count", count: true, bytes: true };
const CENSUS_BREAKDOWN = {
by: "coarseType",
objects: COUNT,
strings: COUNT,
scripts: COUNT,
other: COUNT,
domNode: COUNT,
};
const LABEL_BREAKDOWN = {
by: "internalType",
then: COUNT,
};
const MAX_INDIVIDUALS = 10;
add_task(async function () {
const client = new HeapAnalysesClient();
const snapshotFilePath = saveNewHeapSnapshot();
await client.readHeapSnapshot(snapshotFilePath);
ok(true, "Should have read the heap snapshot");
const dominatorTreeId = await client.computeDominatorTree(snapshotFilePath);
ok(true, "Should have computed dominator tree");
const { report } = await client.takeCensus(
snapshotFilePath,
{ breakdown: CENSUS_BREAKDOWN },
{ asTreeNode: true }
);
ok(report, "Should get a report");
let nodesWithLeafIndicesFound = 0;
await (async function assertCanGetIndividuals(censusNode) {
if (censusNode.reportLeafIndex !== undefined) {
nodesWithLeafIndicesFound++;
const response = await client.getCensusIndividuals({
dominatorTreeId,
indices: DevToolsUtils.isSet(censusNode.reportLeafIndex)
? censusNode.reportLeafIndex
: new Set([censusNode.reportLeafIndex]),
censusBreakdown: CENSUS_BREAKDOWN,
labelBreakdown: LABEL_BREAKDOWN,
maxRetainingPaths: 1,
maxIndividuals: MAX_INDIVIDUALS,
});
dumpn(`response = ${JSON.stringify(response, null, 4)}`);
equal(
response.nodes.length,
Math.min(MAX_INDIVIDUALS, censusNode.count),
"response.nodes.length === Math.min(MAX_INDIVIDUALS, censusNode.count)"
);
let lastRetainedSize = Infinity;
for (const individual of response.nodes) {
equal(
typeof individual.nodeId,
"number",
"individual.nodeId should be a number"
);
Assert.lessOrEqual(
individual.retainedSize,
lastRetainedSize,
"individual.retainedSize <= lastRetainedSize"
);
lastRetainedSize = individual.retainedSize;
ok(
individual.shallowSize,
"individual.shallowSize should exist and be non-zero"
);
ok(individual.shortestPaths, "individual.shortestPaths should exist");
ok(
individual.shortestPaths.nodes,
"individual.shortestPaths.nodes should exist"
);
ok(
individual.shortestPaths.edges,
"individual.shortestPaths.edges should exist"
);
ok(individual.label, "individual.label should exist");
}
}
if (censusNode.children) {
for (const child of censusNode.children) {
await assertCanGetIndividuals(child);
}
}
})(report);
equal(
nodesWithLeafIndicesFound,
4,
"Should have found a leaf for each coarse type"
);
client.destroy();
});