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    use message::types;

    /// Connection fee rate filter
    #[derive(Debug, Default)]
    pub struct FeeRateFilter {
    	/// Minimal fee in satoshis per 1000 bytes
    	fee_rate: u64,
    }

    impl FeeRateFilter {
    	/// Set minimal fee rate, this filter accepts
    	pub fn set_min_fee_rate(&mut self, message: types::FeeFilter) {
    		self.fee_rate = message.fee_rate;
    	}

    	/// Filter transaction using its fee rate
    	pub fn filter_transaction(&self, tx_fee_rate: Option<u64>) -> bool {
    		tx_fee_rate
    			.map(|tx_fee_rate| tx_fee_rate >= self.fee_rate)
    			.unwrap_or(true)
    	}
    }

    #[cfg(test)]
    mod tests {
    	use message::types;
    	use super::FeeRateFilter;

    	#[test]
    	fn fee_rate_filter_empty() {
    		assert!(FeeRateFilter::default().filter_transaction(Some(0)));
    		assert!(FeeRateFilter::default().filter_transaction(None));
    	}

    	#[test]
    	fn fee_rate_filter_accepts() {
    		let mut filter = FeeRateFilter::default();
    		filter.set_min_fee_rate(types::FeeFilter::with_fee_rate(1000));
    		assert!(filter.filter_transaction(Some(1000)));
    		assert!(filter.filter_transaction(Some(2000)));
    	}

    	#[test]
    	fn fee_rate_filter_rejects() {
    		let mut filter = FeeRateFilter::default();
    		filter.set_min_fee_rate(types::FeeFilter::with_fee_rate(1000));
    		assert!(!filter.filter_transaction(Some(500)));
    	}
    }

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