blvm-consensus 0.1.8

Bitcoin Commons BLVM: Direct mathematical implementation of Bitcoin consensus rules from the Orange Paper
Documentation 
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//! Integration tests for blvm-consensus

use blvm_consensus::*;

#[test]
fn test_consensus_proof_basic_functionality() {
    let consensus = ConsensusProof::new();

    // Test valid transaction
    let tx = Transaction {
        version: 1,
        inputs: vec![TransactionInput {
            prevout: OutPoint {
                hash: [0; 32].into(),
                index: 0,
            },
            script_sig: vec![],
            sequence: 0xffffffff,
        }]
        .into(),
        outputs: vec![TransactionOutput {
            value: 1000,
            script_pubkey: vec![].into(),
        }]
        .into(),
        lock_time: 0,
    };

    let result = consensus.validate_transaction(&tx).unwrap();
    assert_eq!(result, ValidationResult::Valid);
}

#[test]
fn test_consensus_proof_coinbase_validation() {
    let consensus = ConsensusProof::new();

    // Test coinbase transaction
    let coinbase_tx = Transaction {
        version: 1,
        inputs: vec![TransactionInput {
            prevout: OutPoint {
                hash: [0; 32].into(),
                index: 0xffffffff,
            },
            script_sig: vec![],
            sequence: 0xffffffff,
        }]
        .into(),
        outputs: vec![TransactionOutput {
            value: 5000000000, // 50 BTC
            script_pubkey: vec![].into(),
        }]
        .into(),
        lock_time: 0,
    };

    let utxo_set = UtxoSet::default();
    let (result, fee) = consensus
        .validate_tx_inputs(&coinbase_tx, &utxo_set, 0)
        .unwrap();

    assert_eq!(result, ValidationResult::Valid);
    assert_eq!(fee, 0); // Coinbase has no fee
}

#[test]
fn test_consensus_proof_invalid_transaction() {
    let consensus = ConsensusProof::new();

    // Test invalid transaction (empty inputs)
    let invalid_tx = Transaction {
        version: 1,
        inputs: vec![].into(),
        outputs: vec![TransactionOutput {
            value: 1000,
            script_pubkey: vec![].into(),
        }]
        .into(),
        lock_time: 0,
    };

    let result = consensus.validate_transaction(&invalid_tx).unwrap();
    assert!(matches!(result, ValidationResult::Invalid(_)));
}

#[test]
fn test_consensus_proof_utxo_validation() {
    let consensus = ConsensusProof::new();

    // Create a transaction that spends from a UTXO
    let prevout = OutPoint {
        hash: [1; 32],
        index: 0,
    };
    let tx = Transaction {
        version: 1,
        inputs: vec![TransactionInput {
            prevout: prevout.clone(),
            script_sig: vec![].into(),
            sequence: 0xffffffff,
        }]
        .into(),
        outputs: vec![TransactionOutput {
            value: 500,
            script_pubkey: vec![].into(),
        }]
        .into(),
        lock_time: 0,
    };

    // Create UTXO set with the input
    let mut utxo_set = UtxoSet::default();
    utxo_set.insert(
        prevout,
        std::sync::Arc::new(UTXO {
            value: 1000,
            script_pubkey: vec![].into(),
            height: 0,
            is_coinbase: false,
        }),
    );

    let (result, fee) = consensus.validate_tx_inputs(&tx, &utxo_set, 1).unwrap();

    assert_eq!(result, ValidationResult::Valid);
    assert_eq!(fee, 500); // 1000 - 500 = 500 fee
}

#[test]
fn test_consensus_proof_insufficient_funds() {
    let consensus = ConsensusProof::new();

    // Create a transaction that tries to spend more than available
    let prevout = OutPoint {
        hash: [1; 32],
        index: 0,
    };
    let tx = Transaction {
        version: 1,
        inputs: vec![TransactionInput {
            prevout: prevout.clone(),
            script_sig: vec![].into(),
            sequence: 0xffffffff,
        }]
        .into(),
        outputs: vec![TransactionOutput {
            value: 2000, // More than available
            script_pubkey: vec![].into(),
        }]
        .into(),
        lock_time: 0,
    };

    // Create UTXO set with insufficient funds
    let mut utxo_set = UtxoSet::default();
    utxo_set.insert(
        prevout,
        std::sync::Arc::new(UTXO {
            value: 1000, // Less than output
            script_pubkey: vec![].into(),
            height: 0,
            is_coinbase: false,
        }),
    );

    let (result, _fee) = consensus.validate_tx_inputs(&tx, &utxo_set, 1).unwrap();
    assert!(matches!(result, ValidationResult::Invalid(_)));
}