Db Module

For additional reference, please review the source

Works with SQL database.

The most important function of this module is cleaning database before each test. That's why this module was added into global configuration file: codeception.yml. To have your database properly cleaned you should configure it to access the database. Also provides actions to perform checks in database.

In order to have your database populated with data you need a raw SQL dump. Just put it in tests/_data dir (by default) and specify path to it in config. Next time after database is cleared all your data will be restored from dump. Don't forget to include CREATE TABLE statements into it.

Supported and tested databases are:

  • MySQL
  • SQLite (only file)
  • PostgreSQL

Supported but not tested.

  • Oracle

Connection is done by database Drivers, which are stored in Codeception\Lib\Driver namespace. Check out drivers if you get problems loading dumps and cleaning databases.


  • Maintainer: davert
  • stability:
    • Mysql: stable
    • SQLite: stable
    • Postgres: beta
    • MSSQL: alpha
    • Oracle: alpha
  • Contact: codecept@davert.mail.ua

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


  • dsn required - PDO DSN
  • user required - user to access database
  • password required - password
  • 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


   enabled: [Db]
         dsn: 'mysql:host=localhost;dbname=testdb'
         user: 'root'
         password: ''
         dump: 'tests/_data/dump.sql'
         populate: true
         cleanup: false

Public Properties


Effect is opposite to ->seeInDatabase

Checks if there is no record with such column values in database. Provide table name and column values.


$I->dontSeeInDatabase('users', array('name' => 'Davert', 'email' => 'davert@mail.com'));

Will generate:

SELECT COUNT(*) FROM `users` WHERE `name` = 'Davert' AND `email` = 'davert@mail.com'

Fails if such user was found.

  • param $table
  • param array $criteria


Fetches a single column value from a database. Provide table name, desired column and criteria.


$mail = $I->grabFromDatabase('users', 'email', array('name' => 'Davert'));

@version 1.1

  • param $table
  • param $column
  • param array $criteria


Inserts SQL record into database. This record will be erased after the test.

$I->haveInDatabase('users', array('name' => 'miles', 'email' => 'miles@davis.com'));
  • param $table
  • param array $data

  • return integer $id


Checks if a row with given column values exists. Provide table name and column values.


$I->seeInDatabase('users', array('name' => 'Davert', 'email' => 'davert@mail.com'));

Will generate:

SELECT COUNT(*) FROM `users` WHERE `name` = 'Davert' AND `email` = 'davert@mail.com'

Fails if no such user found.

  • param $table
  • param array $criteria


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