If you use Codeception installed using composer, install this module with the following command:

composer require --dev codeception/module-mongodb

Alternatively, you can enable MongoDb module in suite configuration file and run

codecept init upgrade4

This module was bundled with Codeception 2 and 3, but since version 4 it is necessary to install it separately.
Some modules are bundled with PHAR files.
Warning. Using PHAR file and composer in the same project can cause unexpected errors.


Works with MongoDb database.

The most important function of this module is cleaning database before each test. To have your database properly cleaned you should configure it to access the database.

In order to have your database populated with data you need a valid js file with data (of the same style which can be fed up to mongo binary) File can be generated by RockMongo export command You can also use directory, generated by


tool or it’s


archive (not available for Windows systems), generated by

tar -czf <archive_file_name>.tar.gz <path_to dump directory>

. Just put it in


dir (by default) and specify path to it in config. Next time after database is cleared all your data will be restored from dump. The DB preparation should as following:

  • clean database
  • system collection system.users should contain the user which will be authenticated while script performs DB operations

Connection is done by MongoDb driver, which is stored in Codeception\Lib\Driver namespace. Check out the driver if you get problems loading dumps and cleaning databases.

HINT: This module can be used with Mongofill library which is Mongo client written in PHP without extension.


Please review the code of non-stable modules and provide patches if you have issues.


  • dsn required - MongoDb DSN with the db name specified at the end of the host after slash
  • user required - user to access database
  • password required - password
  • dump_type required - type of dump. One of ‘js’ (MongoDb::DUMP_TYPE_JS), ‘mongodump’ (MongoDb::DUMP_TYPE_MONGODUMP) or ‘mongodump-tar-gz’ (MongoDb::DUMP_TYPE_MONGODUMP_TAR_GZ). default: MongoDb::DUMP_TYPE_JS).
  • dump - path to database dump
  • populate: true - should the dump be loaded before test suite is started.
  • cleanup: true - should the dump be reloaded after each test. Boolean or ‘dirty’. If cleanup is set to ‘dirty’, the dump is only reloaded if any data has been written to the db during a test. This is checked using the dbHash command.



  • param string $collection
  • param array $criteria
  • return void

Checks if collection doesn’t contain an item.

$I->dontSeeInCollection('users', ['name' => 'miles']);


  • param string $collection
  • param array $criteria
  • return int

Grabs the documents count from a collection

$count = $I->grabCollectionCount('users');
// or
$count = $I->grabCollectionCount('users', ['isAdmin' => true]);


  • param string $collection
  • param array $criteria
  • return object|array|null

Grabs a data from collection

$user = $I->grabFromCollection('users', ['name' => 'miles']);


  • param string $collection
  • param array $data
  • return string

Inserts data into collection

$I->haveInCollection('users', ['name' => 'John', 'email' => '[email protected]']);
$user_id = $I->haveInCollection('users', ['email' => '[email protected]']);


  • param string $collection
  • param array $criteria
  • param string $elementToCheck
  • return void

Asserts that an element in a collection exists and is an Array

$I->seeElementIsArray('users', ['name' => 'John Doe'], 'data.skills');


  • param string $collection
  • param array $criteria
  • param string $elementToCheck
  • return void

Asserts that an element in a collection exists and is an Object

$I->seeElementIsObject('users', ['name' => 'John Doe'], 'data');


  • param string $collection
  • param array $criteria
  • return void

Checks if collection contains an item.

$I->seeInCollection('users', ['name' => 'miles']);


  • param string $collection
  • param int $expected
  • param array $criteria
  • return void

Count number of records in a collection

$I->seeNumElementsInCollection('users', 2);
$I->seeNumElementsInCollection('users', 1, ['name' => 'miles']);


  • param string $dbName
  • return void

Specify the database to use



Module reference is taken from the source code. Help us to improve documentation. Edit module reference
Don't know how to write tests on your own? We will build or improve them for you. Request a quote for official enterprise support or trainings