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// Helpers for testing the logical sessions collection.
/**
* Validates that the sessions collection exists if we expect it to,
* and has a TTL index on the lastUse field, if we expect it to.
*/
function validateSessionsCollection(conn, collectionExists, indexExists, assertIfNotExists = true) {
var config = conn.getDB("config");
var info = config.getCollectionInfos({name: "system.sessions"});
var size = collectionExists ? 1 : 0;
if (assertIfNotExists) {
assert.eq(info.length, size);
} else {
return (info.length != size);
}
var indexes = config.system.sessions.getIndexes();
var found = false;
for (var i = 0; i < indexes.length; i++) {
var entry = indexes[i];
if (entry["name"] == "lsidTTLIndex") {
found = true;
assert.eq(entry["ns"], "config.system.sessions");
assert.eq(entry["key"], {"lastUse": 1});
assert(entry.hasOwnProperty("expireAfterSeconds"));
}
}
if (assertIfNotExists) {
if (indexExists) {
assert(collectionExists);
assert(found, "expected sessions collection TTL index to exist");
} else {
assert(!found, "TTL index on sessions collection exists");
}
} else {
return (indexExists != found);
}
}
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