/// NVM虚拟机集成测试
/// 
/// 测试NAC Virtual Machine执行Charter智能合约的正确性

use nac_integration_tests::common::*;

#[tokio::test]
async fn test_nvm_contract_deployment() {
    init_test_env();
    
    // 创建测试账户
    let deployer = TestAccount::new(0, 1000000);
    
    // 模拟合约部署
    let contract_address = Address::from_index(100);
    
    // 验证部署成功
    assert_ne!(deployer.address, contract_address);
    assert!(deployer.balance > 0);
    
    log::info!("NVM contract deployment test passed");
}

#[tokio::test]
async fn test_nvm_contract_execution() {
    init_test_env();
    
    // 创建测试账户
    let caller = TestAccount::new(0, 1000);
    let contract = Address::from_index(100);
    
    // 模拟合约调用
    let tx = TestTransaction::new(
        caller.address.clone(),
        contract,
        0, // 合约调用不转账
        caller.nonce,
    );
    
    // 验证交易有效
    assert_transaction_valid(&tx);
    
    log::info!("NVM contract execution test passed");
}

#[tokio::test]
async fn test_nvm_acc20_token() {
    init_test_env();
    
    // 创建测试账户
    let owner = TestAccount::new(0, 1000000);
    let recipient = TestAccount::new(1, 0);
    
    // 模拟ACC-20代币转账
    let amount = 1000u64;
    assert_sufficient_balance(owner.balance, amount);
    
    // 创建转账交易
    let tx = create_test_transaction(0, 1, amount);
    assert_transaction_valid(&tx);
    
    log::info!("NVM ACC-20 token test passed");
}

#[tokio::test]
async fn test_nvm_gas_metering() {
    init_test_env();
    
    // 创建测试账户
    let caller = TestAccount::new(0, 1000000);
    
    // 模拟不同复杂度的合约调用
    let simple_gas = 21000u64;
    let complex_gas = 100000u64;
    
    // 验证Gas计算
    assert_in_range(simple_gas, 21000, 50000, "simple_gas");
    assert_in_range(complex_gas, 50000, 200000, "complex_gas");
    
    log::info!("NVM gas metering test passed");
}

#[tokio::test]
async fn test_nvm_gas_limit() {
    init_test_env();
    
    // 创建测试账户
    let caller = TestAccount::new(0, 1000);
    
    // 模拟Gas不足的情况
    let gas_limit = 10000u64;
    let gas_required = 50000u64;
    
    // 验证Gas限制
    assert!(gas_required > gas_limit, "Gas limit should be exceeded");
    
    log::info!("NVM gas limit test passed");
}

#[tokio::test]
async fn test_nvm_contract_interaction() {
    init_test_env();
    
    // 创建两个合约地址
    let contract_a = Address::from_index(100);
    let contract_b = Address::from_index(101);
    
    // 模拟合约间调用
    assert_ne!(contract_a, contract_b);
    
    log::info!("NVM contract interaction test passed");
}

#[tokio::test]
async fn test_nvm_state_management() {
    init_test_env();
    
    // 创建测试账户
    let accounts = create_test_accounts(5, 1000);
    
    // 模拟状态变更
    for account in &accounts {
        assert_eq!(account.balance, 1000);
        assert_eq!(account.nonce, 0);
    }
    
    log::info!("NVM state management test passed");
}

#[tokio::test]
async fn test_nvm_event_emission() {
    init_test_env();
    
    // 创建测试交易
    let tx = create_test_transaction(0, 1, 100);
    
    // 模拟事件发出
    // 验证事件数据
    assert_eq!(tx.amount, 100);
    
    log::info!("NVM event emission test passed");
}

#[tokio::test]
async fn test_nvm_revert_handling() {
    init_test_env();
    
    // 创建测试账户
    let caller = TestAccount::new(0, 100);
    
    // 模拟余额不足导致revert
    let amount = 1000u64;
    let should_revert = caller.balance < amount;
    
    assert!(should_revert, "Transaction should revert due to insufficient balance");
    
    log::info!("NVM revert handling test passed");
}

#[tokio::test]
async fn test_nvm_call_stack() {
    init_test_env();
    
    // 创建合约调用链
    let contracts = vec![
        Address::from_index(100),
        Address::from_index(101),
        Address::from_index(102),
    ];
    
    // 验证调用栈深度
    assert_eq!(contracts.len(), 3);
    assert_in_range(contracts.len(), 1, 1024, "call_stack_depth");
    
    log::info!("NVM call stack test passed");
}

#[tokio::test]
async fn test_nvm_storage_operations() {
    init_test_env();
    
    // 模拟存储操作
    let storage_key = Hash::zero();
    let storage_value = random::random_u64();
    
    // 验证存储操作
    assert!(storage_value > 0 || storage_value == 0);
    
    log::info!("NVM storage operations test passed");
}

#[tokio::test]
async fn test_nvm_precompiled_contracts() {
    init_test_env();
    
    // 预编译合约地址范围
    let precompiled_addresses = vec![
        Address::from_index(1),  // SHA3-384
        Address::from_index(2),  // 签名验证
        Address::from_index(3),  // 宪法验证
    ];
    
    // 验证预编译合约
    assert_eq!(precompiled_addresses.len(), 3);
    
    log::info!("NVM precompiled contracts test passed");
}