1  // Copyright (c) 2019-2025 Alpha-Delta Network Inc.
 2  // This file is part of the deltavm library.
 3  
 4  // Licensed under the Apache License, Version 2.0 (the "License");
 5  // you may not use this file except in compliance with the License.
 6  // You may obtain a copy of the License at:
 7  
 8  // http://www.apache.org/licenses/LICENSE-2.0
 9  
10  // Unless required by applicable law or agreed to in writing, software
11  // distributed under the License is distributed on an "AS IS" BASIS,
12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  // See the License for the specific language governing permissions and
14  // limitations under the License.
15  
16  use super::*;
17  
18  impl<N: Network> FromBytes for Solution<N> {
19      /// Reads the solution from the buffer.
20      fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
21          let partial_solution = PartialSolution::read_le(&mut reader)?;
22          let target = u64::read_le(&mut reader)?;
23  
24          Ok(Self::new(partial_solution, target))
25      }
26  }
27  
28  impl<N: Network> ToBytes for Solution<N> {
29      /// Writes the solution to the buffer.
30      fn write_le<W: Write>(&self, mut writer: W) -> IoResult<()> {
31          self.partial_solution.write_le(&mut writer)?;
32          self.target.write_le(&mut writer)
33      }
34  }
35  
36  #[cfg(test)]
37  mod tests {
38      use super::*;
39      use console::{account::PrivateKey, network::MainnetV0};
40  
41      type CurrentNetwork = MainnetV0;
42  
43      #[test]
44      fn test_bytes() -> Result<()> {
45          let mut rng = TestRng::default();
46          let private_key = PrivateKey::<CurrentNetwork>::new(&mut rng)?;
47          let address = Address::try_from(private_key)?;
48  
49          // Sample a new solution.
50          let partial_solution = PartialSolution::new(rng.r#gen(), address, u64::rand(&mut rng)).unwrap();
51          let target = u64::rand(&mut rng);
52          let expected = Solution::new(partial_solution, target);
53  
54          // Check the byte representation.
55          let expected_bytes = expected.to_bytes_le()?;
56          assert_eq!(expected, Solution::read_le(&expected_bytes[..])?);
57          assert!(Solution::<CurrentNetwork>::read_le(&expected_bytes[1..]).is_err());
58  
59          Ok(())
60      }
61  }