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path: root/jstests/noPassthrough/dbhash_capped_collection.js
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/**
 * Tests that the dbHash command separately lists the names of capped collections on the database.
 *
 * @tags: [requires_replication]
 */
(function() {
"use strict";

const rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();

const db = rst.getPrimary().getDB("test");

// We create a capped collection as well as a non-capped collection and verify that the "capped"
// field in the dbHash command response only lists the capped one.
assert.commandWorked(db.runCommand({create: "noncapped"}));
assert.commandWorked(db.runCommand({create: "capped", capped: true, size: 4096}));
let res = assert.commandWorked(db.runCommand({dbHash: 1}));
assert.eq(["capped"], res.capped);

// If the capped collection is excluded from the list of collections to md5sum, then it won't
// appear in the "capped" field either.
res = assert.commandWorked(db.runCommand({dbHash: 1, collections: ["noncapped"]}));
assert.eq([], res.capped);

{
    const session = db.getMongo().startSession();

    const hashesDefault = rst.getHashesUsingSessions([session], db.getName());
    const hashesFilterCapped =
        rst.getHashesUsingSessions([session], db.getName(), {filterCapped: true});
    const hashesNoFilterCapped =
        rst.getHashesUsingSessions([session], db.getName(), {filterCapped: false});

    assert.eq(["noncapped"],
              Object.keys(hashesFilterCapped[0].collections),
              "capped collection should have been filtered out");
    assert.eq(["capped", "noncapped"],
              Object.keys(hashesNoFilterCapped[0].collections).sort(),
              "capped collection should not have been filtered out");
    assert.eq(hashesDefault[0].collections,
              hashesFilterCapped[0].collections,
              "getHashesUsingSessions() should default to filter out capped collections");

    const hashes = rst.getHashes(db.getName());
    assert.eq(hashesNoFilterCapped[0].collections,
              hashes.master.collections,
              "getHashes() should default to not filter out capped collections");

    session.endSession();
}

rst.stopSet();
})();