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bitcoin/src/pow.rs

@@ -1791,8 +1791,11 @@ mod tests {
 
     #[test]
     fn compact_target_from_upwards_difficulty_adjustment_using_headers() {
-        use crate::{block::Version, constants::genesis_block, TxMerkleNode};
         use hashes::Hash;
+
+        use crate::block::Version;
+        use crate::constants::genesis_block;
+        use crate::TxMerkleNode;
         let params = Params::new(crate::Network::Signet);
         let epoch_start = genesis_block(&params).header;
 
@@ -1803,17 +1806,20 @@ mod tests {
             merkle_root: TxMerkleNode::all_zeros(),
             time: 1599332177,
             bits: epoch_start.bits,
-            nonce: epoch_start.nonce
+            nonce: epoch_start.nonce,
         };
-        let adjustment = CompactTarget::from_header_difficulty_adjustment(epoch_start, current, params);
+        let adjustment =
+            CompactTarget::from_header_difficulty_adjustment(epoch_start, current, params);
         let adjustment_bits = CompactTarget::from_consensus(503394215); // Block 2016 compact target
         assert_eq!(adjustment, adjustment_bits);
     }
 
     #[test]
     fn compact_target_from_downwards_difficulty_adjustment_using_headers() {
-        use crate::{block::Version, TxMerkleNode};
         use hashes::Hash;
+
+        use crate::block::Version;
+        use crate::TxMerkleNode;
         let params = Params::new(crate::Network::Signet);
         let starting_bits = CompactTarget::from_consensus(503394215); // Block 2016 compact target
 
@@ -1824,7 +1830,7 @@ mod tests {
             merkle_root: TxMerkleNode::all_zeros(),
             time: 1599332844,
             bits: starting_bits,
-            nonce: 0
+            nonce: 0,
         };
 
         // Block 4031, the only information used are `bits` and `time`
@@ -1834,9 +1840,10 @@ mod tests {
             merkle_root: TxMerkleNode::all_zeros(),
             time: 1600591200,
             bits: starting_bits,
-            nonce: 0
+            nonce: 0,
         };
-        let adjustment = CompactTarget::from_header_difficulty_adjustment(epoch_start, current, params);
+        let adjustment =
+            CompactTarget::from_header_difficulty_adjustment(epoch_start, current, params);
         let adjustment_bits = CompactTarget::from_consensus(503397348); // Block 4032 compact target
         assert_eq!(adjustment, adjustment_bits);
     }
@@ -1847,29 +1854,27 @@ mod tests {
         let starting_bits = CompactTarget::from_consensus(503403001);
         let timespan = (0.2 * params.pow_target_timespan as f64) as u64;
         let got = CompactTarget::from_next_work_required(starting_bits, timespan, params);
-        let want = Target::from_compact(starting_bits)
-            .min_transition_threshold()
-            .to_compact_lossy();
+        let want =
+            Target::from_compact(starting_bits).min_transition_threshold().to_compact_lossy();
         assert_eq!(got, want);
     }
 
     #[test]
     fn compact_target_from_minimum_downward_difficulty_adjustment() {
         let params = Params::new(crate::Network::Signet);
         let starting_bits = CompactTarget::from_consensus(403403001); // High difficulty for Signet
-        let timespan =  5 * params.pow_target_timespan; // Really slow.
+        let timespan = 5 * params.pow_target_timespan; // Really slow.
         let got = CompactTarget::from_next_work_required(starting_bits, timespan, &params);
-        let want = Target::from_compact(starting_bits)
-            .max_transition_threshold(params)
-            .to_compact_lossy();
+        let want =
+            Target::from_compact(starting_bits).max_transition_threshold(params).to_compact_lossy();
         assert_eq!(got, want);
     }
 
     #[test]
     fn compact_target_from_adjustment_is_max_target() {
         let params = Params::new(crate::Network::Signet);
         let starting_bits = CompactTarget::from_consensus(503543726); // Genesis compact target on Signet
-        let timespan =  5 * params.pow_target_timespan; // Really slow.
+        let timespan = 5 * params.pow_target_timespan; // Really slow.
         let got = CompactTarget::from_next_work_required(starting_bits, timespan, &params);
         let want = params.max_attainable_target.to_compact_lossy();
         assert_eq!(got, want);