fix tests with test vectors.

Author: mmaker

src/tests/spec/custom_schnorr_protocol.rs

@@ -11,6 +11,15 @@ use crate::traits::{SigmaProtocol, SigmaProtocolSimulator};
 
 pub struct SchnorrProtocolCustom<G: SRandom + GroupEncoding>(pub LinearRelation<G>);
 
+impl<G> From<LinearRelation<G>> for SchnorrProtocolCustom<G>
+where
+    G: SRandom + GroupEncoding,
+{
+    fn from(value: LinearRelation<G>) -> Self {
+        Self(value)
+    }
+}
+
 impl<G: SRandom + GroupEncoding> SchnorrProtocolCustom<G> {
     pub fn witness_len(&self) -> usize {
         self.0.linear_map.num_scalars

src/tests/spec/test_vectors.rs

@@ -24,7 +24,7 @@ macro_rules! generate_ni_function {
             let mut rng = TestDRNG::new(seed);
             let (instance, witness) = $test_fn($(generate_ni_function!(@arg rng, $param)),*);
 
-            let protocol = SchnorrProtocolCustom(instance);
+            let protocol = SchnorrProtocolCustom::from(instance);
             let nizk = NIProtocol::from_iv(iv, protocol);
 
             let proof_bytes = nizk.prove_batchable(&witness, &mut rng).unwrap();

src/tests/spec/test_vectors_with_fixed_label.rs

@@ -25,7 +25,7 @@ macro_rules! generate_ni_function {
             let (instance, witness) = $test_fn($(generate_ni_function!(@arg rng, $param)),*);
 
             let statement = instance.label();
-            let protocol = SchnorrProtocolCustom(instance);
+            let protocol = SchnorrProtocolCustom::from(instance);
             let nizk = NIProtocol::new(session_id, protocol);
 
             let proof_bytes = nizk.prove_batchable(&witness, &mut rng).unwrap();