Add tests for parsing Casper public keys.

Public keys were taken directly from:
 - https://cspr.live/account/01c377281132044bd3278b039925eeb3efdb9d99dd5f46d9ec6a764add34581af7
 - https://cspr.live/account/0202e99759649fa63a72c685b72e696b30c90f1deabb02d0d9b1de45eb371a73e5bb

kairos-cli/src/crypto/public_key.rs

@@ -22,3 +22,32 @@ impl CasperPublicKey {
         })
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_casper_ed25519_public_key() {
+        // This public key has a 01 prefix indicating Ed25519.
+        let bytes = hex::decode("01c377281132044bd3278b039925eeb3efdb9d99dd5f46d9ec6a764add34581af7").unwrap();
+        let result = CasperPublicKey::from_bytes(&bytes);
+        assert!(result.is_ok(), "Ed25519 public key should be parsed correctly");
+    }
+
+    #[test]
+    fn test_casper_secp256k1_public_key() {
+        // This public key has a 02 prefix indicating Secp256k1.
+        let bytes = hex::decode("0202e99759649fa63a72c685b72e696b30c90f1deabb02d0d9b1de45eb371a73e5bb").unwrap();
+        let result = CasperPublicKey::from_bytes(&bytes);
+        assert!(result.is_ok(), "Secp256k1 public key should be parsed correctly");
+    }
+
+    #[test]
+    fn test_casper_unrecognized_prefix() {
+        // Using a 99 prefix which is not recognized.
+        let bytes = hex::decode("99c377281132044bd3278b039925eeb3efdb9d99dd5f46d9ec6a764add34581af7").unwrap();
+        let result = CasperPublicKey::from_bytes(&bytes);
+        assert!(result.is_err(), "Unrecognized prefix should result in an error");
+    }
+}