Finding & Fixing Bugs

# Comprehensive bug scan with both standard and custom checks
zenable check '**/*.{py,js,ts,go}'

# Focus on critical code paths, excluding test files
zenable check 'src/api/**/*' 'src/payments/**/*' \
  --exclude '**/test_*.py' \
  --exclude '**/*.test.{js,ts}' \
  --exclude '**/*_test.go'

# ❌ Common bug: incorrect money handling
def calculate_total(items):
    return sum(item.price for item in items)

# ✅ Zenable enforces your money handling rules
def calculate_total(items):
    total = Money(0, currency="USD")
    for item in items:
        converted = currency_service.convert(
            item.price,
            from_currency=item.currency,
            to_currency="USD",
            rate_date=datetime.now()
        )
        total = total.add(converted, rounding=ROUND_HALF_EVEN)
    return total

// ❌ Missing required response structure
app.get('/api/users', async (req, res) => {
    const users = await db.getUsers();
    res.json(users);
});

// ✅ Zenable enforces API contract
app.get('/api/users', async (req, res) => {
    const users = await db.getUsers();
    res.set({
        'X-Request-ID': req.id,
        'X-Timestamp': Date.now(),
        'X-RateLimit-Remaining': req.rateLimit.remaining
    });
    res.json({
        data: users,
        meta: {
            request_id: req.id,
            timestamp: Date.now(),
            count: users.length
        }
    });
});

# ❌ Bug: no transaction or retry
def update_user_balance(user_id, amount):
    user = get_user(user_id)
    user.balance += amount
    save_user(user)

# ✅ Zenable enforces consistency requirements
@with_retry(max_attempts=3, backoff=exponential)
@with_transaction
@audit_log
def update_user_balance(user_id, amount, reason):
    with db.transaction() as tx:
        user = tx.query(User).with_for_update().get(user_id)
        old_balance = user.balance
        user.balance += amount

        tx.add(BalanceHistory(
            user_id=user_id,
            old_balance=old_balance,
            new_balance=user.balance,
            change_amount=amount,
            reason=reason
        ))

        tx.commit()