import pytest
import configparser

@pytest.fixture(scope="function")
def temp_config_file(tmp_path):
    config_path = tmp_path / "config.ini"
    parser = configparser.ConfigParser()
    parser['DEFAULT'] = {
        'MESHTASTIC_SERIAL_PORT': '/dev/test_meshtastic',
        'EXTERNAL_TRANSPORT': 'serial',
        'SERIAL_PORT': '/dev/test_meshcore',
        'SERIAL_BAUD_RATE': '19200',
        'SERIAL_PROTOCOL': 'json_newline',
        'MESSAGE_QUEUE_SIZE': '50',
        'LOG_LEVEL': 'DEBUG',
    }
    with open(config_path, 'w') as f:
        parser.write(f)
    yield str(config_path)