# otp.TestSession

### *class* TestSession(\*args, \*\*kwargs)

Bases: [`Session`](session.md#onetick.py.Session)

This class does the same as [`onetick.py.session.Session`](session.md#onetick.py.Session),
but also defines default required [`otp.config`](../config.md#onetick.py.configuration.Config) values.

Using this session object is the equivalent of defining these configuration values:

```default
otp.config['tz'] = 'EST5EDT'
otp.config['default_db'] = 'DEMO_L1'
otp.config['default_symbol'] = 'AAPL'
otp.config['default_start_time'] = datetime(2003, 12, 1, 0, 0, 0)
otp.config['default_end_time'] = datetime(2003, 12, 4, 0, 0, 0)
```

`DEMO_L1` is the database defined in the default locator generated by onetick.py
and it is also a name of the database commonly used in the OneTick ecosystem, academy courses, etc.