def create_db_connection(migrate=False):
    db = DAL('sqlite://db.sqlite', migrate=migrate)

    db.define_table(
        'users',
        Field('username', 'string', length=50, required=True, unique=True),
        Field('password', 'string', length=128, required=True))

    return db
Assert that `get_children_of_type()` works fine.
dataset/ETHPy150Open ferhensil/flask-example/db.py/create_db_connection--crossover with--dataset/ETHPy150Open cidles/poio-api/src/poioapi/tests/test_data.py/TestDataStructureType.test_get_children_of_type