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/**
* Tests for the listDatabases command.
*/
(function() {
"use strict";
// Given the output from the listDatabases command, ensures that the total size reported is the
// sum of the individual db sizes.
function verifySizeSum(listDatabasesOut) {
assert(listDatabasesOut.hasOwnProperty("databases"));
const dbList = listDatabasesOut.databases;
let sizeSum = 0;
for (let i = 0; i < dbList.length; i++) {
sizeSum += dbList[i].sizeOnDisk;
}
assert.eq(sizeSum, listDatabasesOut.totalSize);
}
function verifyNameOnly(listDatabasesOut) {
for (let field in listDatabasesOut) {
assert(['databases', 'nameOnly', 'ok', 'operationTime', '$clusterTime'].some((f) => f ==
field),
'unexpected field ' + field);
}
listDatabasesOut.databases.forEach((database) => {
for (let field in database) {
assert.eq(field, "name", "expected name only");
}
});
}
// Make 4 test databases.
db.getSiblingDB("jstest_list_databases_foo").coll.insert({});
db.getSiblingDB("jstest_list_databases_bar").coll.insert({});
db.getSiblingDB("jstest_list_databases_baz").coll.insert({});
db.getSiblingDB("jstest_list_databases_zap").coll.insert({});
let cmdRes = assert.commandWorked(
db.adminCommand({listDatabases: 1, filter: {name: /jstest_list_databases/}}));
assert.eq(4, cmdRes.databases.length);
verifySizeSum(cmdRes);
// Now only list databases starting with a particular prefix.
cmdRes = assert.commandWorked(
db.adminCommand({listDatabases: 1, filter: {name: /^jstest_list_databases_ba/}}));
assert.eq(2, cmdRes.databases.length);
verifySizeSum(cmdRes);
// Now return only the admin database.
cmdRes = assert.commandWorked(db.adminCommand({listDatabases: 1, filter: {name: "admin"}}));
assert.eq(1, cmdRes.databases.length);
verifySizeSum(cmdRes);
// Now return only the names.
cmdRes = assert.commandWorked(db.adminCommand({listDatabases: 1, nameOnly: true}));
assert.lte(4, cmdRes.databases.length, tojson(cmdRes));
verifyNameOnly(cmdRes);
// Now return only the name of the zap database.
cmdRes = assert.commandWorked(
db.adminCommand({listDatabases: 1, nameOnly: true, filter: {name: /zap/}}));
assert.eq(1, cmdRes.databases.length, tojson(cmdRes));
verifyNameOnly(cmdRes);
// $expr in filter.
cmdRes = assert.commandWorked(db.adminCommand(
{listDatabases: 1, filter: {$expr: {$eq: ["$name", "jstest_list_databases_zap"]}}}));
assert.eq(1, cmdRes.databases.length, tojson(cmdRes));
assert.eq("jstest_list_databases_zap", cmdRes.databases[0].name, tojson(cmdRes));
// $expr with an unbound variable in filter.
assert.commandFailed(
db.adminCommand({listDatabases: 1, filter: {$expr: {$eq: ["$name", "$$unbound"]}}}));
// $expr with a filter that throws at runtime.
assert.commandFailed(db.adminCommand({listDatabases: 1, filter: {$expr: {$abs: "$name"}}}));
// No extensions are allowed in filters.
assert.commandFailed(db.adminCommand({listDatabases: 1, filter: {$text: {$search: "str"}}}));
assert.commandFailed(db.adminCommand({
listDatabases: 1,
filter: {
$where: function() {
return true;
}
}
}));
assert.commandFailed(db.adminCommand({
listDatabases: 1,
filter: {a: {$nearSphere: {$geometry: {type: "Point", coordinates: [0, 0]}}}}
}));
}());
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