PHPUnit test database environment for Laravel

.env

TEST_DB_HOST=localhost # or 127.0.0.1
TEST_DB_DATABASE=my_app
TEST_DB_USERNAME=root
DBT_PASSWORD= # Put you password here if required or leave blank..

database.php

#File located at config/database.php
//This script must be inside connections line.
    ...

    'my_app_test' => [
        'driver'    => 'mysql',
        'host'      => env('TEST_DB_HOST', 'localhost'),
        'database'  => env('TEST_DB_DATABASE', 'test'),
        'username'  => env('TEST_DB_USERNAME', 'root'),
        'password'  => env('TEST_DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
    ],

  ...

phpunit.xml

<php>
        <env name="APP_ENV" value="testing"/>
        <env name="DB_CONNECTION" value="my_app_test"/>
        <env name="DB_DATABASE" value="my_app"/> 
  <!--PS: If you prefer to use the same DB defined in .env file just delete the DB_DATABASE line -->
</php>