Add json output to test CLI command output (#1164)

* Add json output

* Fix empty responses

* Small fixes to test-cli

* Only display Failed message is json option is false

* Explose clap Parser trait

* Dont expose Parser trait

* Small fix to displaying verifying key

crates/protocol/src/lib.rs

@@ -33,7 +33,7 @@ use std::{
 
 use blake2::{Blake2s256, Digest};
 use errors::{ProtocolExecutionErr, VerifyingKeyError};
-use serde::{Deserialize, Serialize};
+use serde::{ser::SerializeStruct, Deserialize, Serialize, Serializer};
 use sp_core::{sr25519, Pair};
 use subxt::utils::AccountId32;
 use synedrion::{
@@ -148,6 +148,19 @@ pub struct RecoverableSignature {
     pub recovery_id: RecoveryId,
 }
 
+// This cannot be derived because [RecoveryId] does not implement Serialize
+impl Serialize for RecoverableSignature {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut state = serializer.serialize_struct("RecoverableSignature", 2)?;
+        state.serialize_field("signature", &self.signature)?;
+        state.serialize_field("recovery_id", &self.recovery_id.to_byte())?;
+        state.end()
+    }
+}
+
 impl RecoverableSignature {
     pub fn to_rsv_bytes(&self) -> [u8; 65] {
         let mut res = [0u8; 65];

crates/test-cli/Cargo.toml

@@ -21,3 +21,5 @@ bincode       ="1.3.3"
 x25519-dalek  ="2.0.1"
 sp-runtime    ={ version="32.0.0", default-features=false }
 entropy-shared={ version="0.3.0", path="../shared" }
+serde_json    ="1.0.132"
+serde         ={ version="1.0.215", features=["derive"] }