//! Unit tests for exo-federation distributed cognitive mesh

#[cfg(test)]
mod post_quantum_crypto_tests {
    #[test]
    #[cfg(feature = "post-quantum")]
    fn test_kyber_keypair_generation() {
        // Test CRYSTALS-Kyber keypair generation
        // let keypair = PostQuantumKeypair::generate();
        //
        // assert_eq!(keypair.public.len(), 1184);  // Kyber768 public key size
        // assert_eq!(keypair.secret.len(), 2400);  // Kyber768 secret key size
    }

    #[test]
    #[cfg(feature = "post-quantum")]
    fn test_kyber_encapsulation() {
        // Test key encapsulation
        // let keypair = PostQuantumKeypair::generate();
        // let (ciphertext, shared_secret1) = encapsulate(&keypair.public).unwrap();
        //
        // assert_eq!(ciphertext.len(), 1088);  // Kyber768 ciphertext size
        // assert_eq!(shared_secret1.len(), 32);  // 256-bit shared secret
    }

    #[test]
    #[cfg(feature = "post-quantum")]
    fn test_kyber_decapsulation() {
        // Test key decapsulation
        // let keypair = PostQuantumKeypair::generate();
        // let (ciphertext, shared_secret1) = encapsulate(&keypair.public).unwrap();
        //
        // let shared_secret2 = decapsulate(&ciphertext, &keypair.secret).unwrap();
        //
        // assert_eq!(shared_secret1, shared_secret2);  // Should match
    }

    #[test]
    #[cfg(feature = "post-quantum")]
    fn test_key_derivation() {
        // Test deriving encryption keys from shared secret
        // let shared_secret = [0u8; 32];
        // let (encrypt_key, mac_key) = derive_keys(&shared_secret);
        //
        // assert_eq!(encrypt_key.len(), 32);
        // assert_eq!(mac_key.len(), 32);
        // assert_ne!(encrypt_key, mac_key);  // Should be different
    }
}

#[cfg(test)]
mod federation_handshake_tests {
    #[test]
    fn test_join_federation_success() {
        // Test successful federation join (placeholder for async implementation)
    }

    #[test]
    fn test_join_federation_timeout() {
        // Test handshake timeout
    }

    #[test]
    fn test_join_federation_invalid_peer() {
        // Test joining with invalid peer address
    }

    #[test]
    fn test_federation_token_expiry() {
        // Test token expiration
    }

    #[test]
    fn test_capability_negotiation() {
        // Test capability exchange and negotiation
    }
}

#[cfg(test)]
mod byzantine_consensus_tests {
    #[test]
    fn test_byzantine_commit_sufficient_votes() {
        // Test consensus with 2f+1 agreement (n=3f+1)
    }

    #[test]
    fn test_byzantine_commit_insufficient_votes() {
        // Test consensus failure with < 2f+1
    }

    #[test]
    fn test_byzantine_three_phase_commit() {
        // Test Pre-prepare -> Prepare -> Commit phases
    }

    #[test]
    fn test_byzantine_malicious_proposal() {
        // Test rejection of invalid proposals
    }

    #[test]
    fn test_byzantine_view_change() {
        // Test leader change on timeout
    }
}

#[cfg(test)]
mod crdt_reconciliation_tests {
    #[test]
    fn test_crdt_gset_merge() {
        // Test G-Set (grow-only set) reconciliation
    }

    #[test]
    fn test_crdt_lww_register() {
        // Test LWW-Register (last-writer-wins)
    }

    #[test]
    fn test_crdt_lww_map() {
        // Test LWW-Map reconciliation
    }

    #[test]
    fn test_crdt_reconcile_federated_results() {
        // Test reconciling federated query results
    }
}

#[cfg(test)]
mod onion_routing_tests {
    #[test]
    fn test_onion_wrap_basic() {
        // Test onion wrapping with relay chain
    }

    #[test]
    fn test_onion_routing_privacy() {
        // Test that intermediate nodes cannot decrypt payload
    }

    #[test]
    fn test_onion_unwrap() {
        // Test unwrapping onion layers
    }

    #[test]
    fn test_onion_routing_failure() {
        // Test handling of relay failure
    }
}

#[cfg(test)]
mod federated_query_tests {
    #[test]
    fn test_federated_query_local_scope() {
        // Test query with local-only scope
    }

    #[test]
    fn test_federated_query_global_scope() {
        // Test query broadcast to all peers
    }

    #[test]
    fn test_federated_query_scoped() {
        // Test query with specific peer scope
    }

    #[test]
    fn test_federated_query_timeout() {
        // Test handling of slow/unresponsive peers
    }
}

#[cfg(test)]
mod raft_consensus_tests {
    #[test]
    fn test_raft_leader_election() {
        // Test Raft leader election
    }

    #[test]
    fn test_raft_log_replication() {
        // Test log replication
    }

    #[test]
    fn test_raft_commit() {
        // Test entry commitment
    }
}

#[cfg(test)]
mod encrypted_channel_tests {
    #[test]
    fn test_encrypted_channel_send() {
        // Test sending encrypted message
    }

    #[test]
    fn test_encrypted_channel_receive() {
        // Test receiving encrypted message
    }

    #[test]
    fn test_encrypted_channel_mac_verification() {
        // Test MAC verification on receive
    }

    #[test]
    fn test_encrypted_channel_replay_attack() {
        // Test replay attack prevention
    }
}

#[cfg(test)]
mod edge_cases_tests {
    #[test]
    fn test_single_node_federation() {
        // Test federation with single node
    }

    #[test]
    fn test_network_partition() {
        // Test handling of network partition
    }

    #[test]
    fn test_byzantine_fault_tolerance_limit() {
        // Test f < n/3 Byzantine fault tolerance limit
    }

    #[test]
    fn test_concurrent_commits() {
        // Test concurrent state updates
    }
}