def set_database(db_url, proxy, config):
    """Initialize the peewee database with the given configuration

    If the given db_url is a regular file, it will be used as sqlite database

    :param str db_url: the connection string for database or path if sqlite file
    :param peewee.Proxy proxy: the peewee proxy to initialise
    :param dict config: the configuration dictionnary
    """
    db_config = config.get('results_database', {}).get('params', {})

    if 'testing' in config and config['testing'] is True:
        database = connect('sqlite:////tmp/results.sqlite', check_same_thread=False, threadlocals=True)
    else:
        if os.path.isfile(db_url) or os.path.isdir(os.path.dirname(db_url)):
            db_url = "sqlite:///" + db_url
            db_config.update(check_same_thread=False, threadlocals=True)
        database = connect(db_url, **db_config)
    proxy.initialize(database)
Initialize the peewee database with the given configuration

    If the given db_url is a regular file, it will be used as sqlite database

    :param str db_url: the connection string for database or path if sqlite file
    :param peewee.Proxy proxy: the peewee proxy to initialise
    :param dict config: the configuration dictionnary