test_HeapSnapshot_takeCensus_12.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that when we take a census and get a bucket list of ids that matched the

// given category, that the returned ids are all in the snapshot and their

// reported category.

function run_test() {

  const g = newGlobal();

  const dbg = new Debugger(g);

  const path = saveNewHeapSnapshot({ debugger: dbg });

  const snapshot = readHeapSnapshot(path);

  const bucket = { by: "bucket" };

  const count = { by: "count", count: true, bytes: false };

  const objectClassCount = { by: "objectClass", then: count, other: count };

  const byClassName = snapshot.takeCensus({

    breakdown: {

      by: "objectClass",

      then: bucket,

      other: bucket,

},

});

  const byClassNameCount = snapshot.takeCensus({

    breakdown: objectClassCount,

});

  const keys = new Set(Object.keys(byClassName));

  equal(

    keys.size,

    Object.keys(byClassNameCount).length,

    "Should have the same number of keys."

);

  for (const k of Object.keys(byClassNameCount)) {

    ok(keys.has(k), "Should not have any unexpected class names");

  for (const key of Object.keys(byClassName)) {

    equal(

      byClassNameCount[key].count,

      byClassName[key].length,

      "Length of the bucket and count should be equal"

);

    for (const id of byClassName[key]) {

      const desc = snapshot.describeNode(objectClassCount, id);

      equal(

        desc[key].count,

1,

        "Describing the bucketed node confirms that it belongs to the category"

);

  do_test_finished();