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Merge rust-bitcoin/rust-bitcoin#2782: Format the `pow` module 

f6129317bd Run the formatter (Tobin C. Harding)
fa4d3d4417 Add whitespace (Tobin C. Harding)

Pull request description:

  #2781 done by a human.

ACKs for top commit:
  apoelstra:
    ACK f6129317bd sad

Tree-SHA512: a72b507995a70ab2b5c2bb717d8bbc4b47f3190157e5d526d33e6a9fd2ad990295806a36e0bda0ac988b1e175d8356c6e6d277337d0ed0a5e0499ad3f336a930
This commit is contained in:
Andrew Poelstra 2024-05-20 16:27:36 +00:00
parent 3d9ceb52c4 f6129317bd
commit 02ae925f83
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GPG Key ID: C588D63CE41B97C1
1 changed files with 23 additions and 15 deletions
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38
bitcoin/src/pow.rs
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@ -1791,10 +1791,14 @@ mod tests {
#[test] #[test]
fn compact_target_from_upwards_difficulty_adjustment_using_headers() { fn compact_target_from_upwards_difficulty_adjustment_using_headers() {
use crate::{block::Version, constants::genesis_block, TxMerkleNode};
use hashes::Hash; use hashes::Hash;
use crate::block::Version;
use crate::constants::genesis_block;
use crate::TxMerkleNode;
let params = Params::new(crate::Network::Signet); let params = Params::new(crate::Network::Signet);
let epoch_start = genesis_block(&params).header; let epoch_start = genesis_block(&params).header;
// Block 2015, the only information used are `bits` and `time` // Block 2015, the only information used are `bits` and `time`
let current = Header { let current = Header {
version: Version::ONE, version: Version::ONE,
@ -1802,19 +1806,23 @@ mod tests {
merkle_root: TxMerkleNode::all_zeros(), merkle_root: TxMerkleNode::all_zeros(),
time: 1599332177, time: 1599332177,
bits: epoch_start.bits, 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 let adjustment_bits = CompactTarget::from_consensus(503394215); // Block 2016 compact target
assert_eq!(adjustment, adjustment_bits); assert_eq!(adjustment, adjustment_bits);
} }
#[test] #[test]
fn compact_target_from_downwards_difficulty_adjustment_using_headers() { fn compact_target_from_downwards_difficulty_adjustment_using_headers() {
use crate::{block::Version, TxMerkleNode};
use hashes::Hash; use hashes::Hash;
use crate::block::Version;
use crate::TxMerkleNode;
let params = Params::new(crate::Network::Signet); let params = Params::new(crate::Network::Signet);
let starting_bits = CompactTarget::from_consensus(503394215); // Block 2016 compact target let starting_bits = CompactTarget::from_consensus(503394215); // Block 2016 compact target
// Block 2016, the only information used is `time` // Block 2016, the only information used is `time`
let epoch_start = Header { let epoch_start = Header {
version: Version::ONE, version: Version::ONE,
@ -1822,8 +1830,9 @@ mod tests {
merkle_root: TxMerkleNode::all_zeros(), merkle_root: TxMerkleNode::all_zeros(),
time: 1599332844, time: 1599332844,
bits: starting_bits, bits: starting_bits,
nonce: 0 nonce: 0,
}; };
// Block 4031, the only information used are `bits` and `time` // Block 4031, the only information used are `bits` and `time`
let current = Header { let current = Header {
version: Version::ONE, version: Version::ONE,
@ -1831,9 +1840,10 @@ mod tests {
merkle_root: TxMerkleNode::all_zeros(), merkle_root: TxMerkleNode::all_zeros(),
time: 1600591200, time: 1600591200,
bits: starting_bits, 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 let adjustment_bits = CompactTarget::from_consensus(503397348); // Block 4032 compact target
assert_eq!(adjustment, adjustment_bits); assert_eq!(adjustment, adjustment_bits);
} }
@ -1844,9 +1854,8 @@ mod tests {
let starting_bits = CompactTarget::from_consensus(503403001); let starting_bits = CompactTarget::from_consensus(503403001);
let timespan = (0.2 * params.pow_target_timespan as f64) as u64; let timespan = (0.2 * params.pow_target_timespan as f64) as u64;
let got = CompactTarget::from_next_work_required(starting_bits, timespan, params); let got = CompactTarget::from_next_work_required(starting_bits, timespan, params);
let want = Target::from_compact(starting_bits) let want =
.min_transition_threshold() Target::from_compact(starting_bits).min_transition_threshold().to_compact_lossy();
.to_compact_lossy();
assert_eq!(got, want); assert_eq!(got, want);
} }
@ -1854,11 +1863,10 @@ mod tests {
fn compact_target_from_minimum_downward_difficulty_adjustment() { fn compact_target_from_minimum_downward_difficulty_adjustment() {
let params = Params::new(crate::Network::Signet); let params = Params::new(crate::Network::Signet);
let starting_bits = CompactTarget::from_consensus(403403001); // High difficulty for 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 got = CompactTarget::from_next_work_required(starting_bits, timespan, &params);
let want = Target::from_compact(starting_bits) let want =
.max_transition_threshold(params) Target::from_compact(starting_bits).max_transition_threshold(params).to_compact_lossy();
.to_compact_lossy();
assert_eq!(got, want); assert_eq!(got, want);
} }
@ -1866,7 +1874,7 @@ mod tests {
fn compact_target_from_adjustment_is_max_target() { fn compact_target_from_adjustment_is_max_target() {
let params = Params::new(crate::Network::Signet); let params = Params::new(crate::Network::Signet);
let starting_bits = CompactTarget::from_consensus(503543726); // Genesis compact target on 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 got = CompactTarget::from_next_work_required(starting_bits, timespan, &params);
let want = params.max_attainable_target.to_compact_lossy(); let want = params.max_attainable_target.to_compact_lossy();
assert_eq!(got, want); assert_eq!(got, want);