def METHOD_NAME(mocker):
    # Because CryptoToFiatConverter is a Singleton we reset the value of _coingekko
    fiat_convert = CryptoToFiatConverter()
    cmc_temp = CryptoToFiatConverter._coingekko
    CryptoToFiatConverter._coingekko = None
    assert fiat_convert._coingekko is None
    assert fiat_convert._find_price(crypto_symbol='btc', fiat_symbol='usd') == 0.0
    CryptoToFiatConverter._coingekko = cmc_temp