message: Use super for tests
diff: @@ -2,7 +2,7 @@ use k256::{
  ecdsa::signature::{DigestVerifier, Signature as _}, // traits
  ecdsa::{Signature, VerifyingKey}, // type aliases
  };
  -use sha2::Digest;
  +use sha2::Digest; // trait
  use crate::dummy_sha2;
  use crate::errors::{VmError, VmResult};
  @@ -28,12 +28,14 @@ pub fn secp256k1_verify(message_hash: &[u8], signature: &[u8], public_key: &[u8]
  #[cfg(test)]
  mod tests {
  - use crate::crypto::secp256k1_verify;
  + use super::*;
  +
  use elliptic_curve::rand_core::OsRng;
  use elliptic_curve::sec1::ToEncodedPoint;
  +
  use k256::{
  - ecdsa::signature::{Signature as _, Signer}, // traits
  - ecdsa::{Signature, SigningKey, VerifyingKey}, // type aliases
  + ecdsa::signature::Signer, // traits
  + ecdsa::{SigningKey, VerifyingKey}, // type aliases
  };
  use sha2::{Digest, Sha256};
  