KrakenTradeVolume tradeVolume = krakenResult.getResult();
assertThat(tradeVolume.getCurrency()).isEqualTo("ZUSD");
assertThat(tradeVolume.getVolume()).isEqualTo("451.3040");
Map<String, KrakenVolumeFee> fees = tradeVolume.getFees();
KrakenVolumeFee fee = fees.get("XXBTZUSD");
assertThat(fee.getFee()).isEqualTo("0.3000");
assertThat(fee.getMinFee()).isEqualTo("0.0500");
assertThat(fee.getMaxFee()).isEqualTo("0.3000");
assertThat(fee.getNextFee()).isEqualTo("0.2900");
assertThat(fee.getNextVolume()).isEqualTo("1000.0000");
assertThat(fee.getTierVolume()).isEqualTo("0.0000");
}