1  // Copyright (c) 2025 ADnet Contributors
 2  // This file is part of the AlphaVM 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> FromStr for Solutions<N> {
19      type Err = Error;
20  
21      /// Initializes the solutions from a JSON-string.
22      fn from_str(solutions: &str) -> Result<Self, Self::Err> {
23          Ok(serde_json::from_str(solutions)?)
24      }
25  }
26  
27  impl<N: Network> Debug for Solutions<N> {
28      /// Prints the solutions as a JSON-string.
29      fn fmt(&self, f: &mut Formatter) -> fmt::Result {
30          Display::fmt(self, f)
31      }
32  }
33  
34  impl<N: Network> Display for Solutions<N> {
35      /// Displays the solutions as a JSON-string.
36      fn fmt(&self, f: &mut Formatter) -> fmt::Result {
37          write!(f, "{}", serde_json::to_string(self).map_err::<fmt::Error, _>(ser::Error::custom)?)
38      }
39  }
40  
41  #[cfg(test)]
42  mod tests {
43      use super::*;
44  
45      #[test]
46      fn test_string() -> Result<()> {
47          let mut rng = TestRng::default();
48  
49          // Sample random solutions.
50          let expected = crate::solutions::serialize::tests::sample_solutions(&mut rng);
51  
52          // Check the string representation.
53          let candidate = format!("{expected}");
54          assert_eq!(expected, Solutions::from_str(&candidate)?);
55  
56          Ok(())
57      }
58  }