dex/pkg/lx/x_chain_integration_test.go

package lx

import (
	"math/big"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
)

// TestXChainIntegration tests X-Chain integration functions
func TestXChainIntegration(t *testing.T) {
	t.Run("CreateXChainIntegration", func(t *testing.T) {
		integration := &XChainIntegration{
			chainID:        1,
			contractAddr:   "0x1234567890abcdef",
			settledOrders:  make(map[uint64]*SettledOrder),
			pendingBatches: make(map[uint64]*SettlementBatch),
		}

		assert.NotNil(t, integration)
		assert.Equal(t, uint64(1), integration.chainID)
		assert.Equal(t, "0x1234567890abcdef", integration.contractAddr)
		assert.NotNil(t, integration.settledOrders)
		assert.NotNil(t, integration.pendingBatches)
	})

	t.Run("SettlementBatch", func(t *testing.T) {
		batch := &SettlementBatch{
			BatchID:   1,
			Timestamp: time.Now(),
			Orders:    make([]*Order, 0),
			Status:    SettlementPending,
		}

		assert.Equal(t, uint64(1), batch.BatchID)
		assert.Equal(t, SettlementPending, batch.Status)
		assert.NotNil(t, batch.Orders)
	})

	t.Run("SettledOrder", func(t *testing.T) {
		order := &SettledOrder{
			OrderID:        1,
			TxHash:         "0xabcdef",
			BlockNumber:    100,
			SettlementTime: time.Now(),
			GasUsed:        big.NewInt(21000),
		}

		assert.Equal(t, uint64(1), order.OrderID)
		assert.Equal(t, "0xabcdef", order.TxHash)
		assert.Equal(t, uint64(100), order.BlockNumber)
		assert.Equal(t, big.NewInt(21000), order.GasUsed)
	})

	t.Run("XChainConfig", func(t *testing.T) {
		config := &XChainConfig{
			RPC:                "https://api.lux.network",
			ChainID:            1,
			SettlementContract: "0x1234567890abcdef",
			BatchSize:          100,
			BatchTimeout:       5 * time.Second,
			MaxGasPrice:        big.NewInt(100000000000), // 100 gwei
		}

		assert.Equal(t, "https://api.lux.network", config.RPC)
		assert.Equal(t, uint64(1), config.ChainID)
		assert.Equal(t, "0x1234567890abcdef", config.SettlementContract)
		assert.Equal(t, 100, config.BatchSize)
		assert.Equal(t, 5*time.Second, config.BatchTimeout)
		assert.Equal(t, big.NewInt(100000000000), config.MaxGasPrice)
	})

	t.Run("XChainStats", func(t *testing.T) {
		stats := &XChainStats{
			TotalSettled:      1000,
			TotalPending:      50,
			TotalFailed:       5,
			AvgGasUsed:        big.NewInt(50000),
			AvgSettlementTime: 2 * time.Second,
			LastSettlement:    time.Now(),
		}

		assert.Equal(t, uint64(1000), stats.TotalSettled)
		assert.Equal(t, uint64(50), stats.TotalPending)
		assert.Equal(t, uint64(5), stats.TotalFailed)
		assert.Equal(t, big.NewInt(50000), stats.AvgGasUsed)
		assert.Equal(t, 2*time.Second, stats.AvgSettlementTime)
	})
}

// TestXChainSettlement tests settlement functionality
func TestXChainSettlement(t *testing.T) {
	t.Run("CreateSettlementEngine", func(t *testing.T) {
		engine := &SettlementEngine{
			batches:       make(map[uint64]*SettlementBatch),
			pendingOrders: make([]*Order, 0),
			batchSize:     100,
			batchTimeout:  5 * time.Second,
		}

		assert.NotNil(t, engine)
		assert.NotNil(t, engine.batches)
		assert.NotNil(t, engine.pendingOrders)
		assert.Equal(t, 100, engine.batchSize)
		assert.Equal(t, 5*time.Second, engine.batchTimeout)
	})

	t.Run("AddOrderToBatch", func(t *testing.T) {
		engine := &SettlementEngine{
			batches:       make(map[uint64]*SettlementBatch),
			pendingOrders: make([]*Order, 0),
			batchSize:     2,
			batchTimeout:  5 * time.Second,
		}

		order1 := &Order{ID: 1, Symbol: "BTC-USD", Price: 50000, Size: 1}
		order2 := &Order{ID: 2, Symbol: "ETH-USD", Price: 3000, Size: 10}

		engine.pendingOrders = append(engine.pendingOrders, order1)
		assert.Len(t, engine.pendingOrders, 1)

		engine.pendingOrders = append(engine.pendingOrders, order2)
		assert.Len(t, engine.pendingOrders, 2)
	})

	t.Run("ProcessSettlement", func(t *testing.T) {
		batch := &SettlementBatch{
			BatchID:   1,
			Timestamp: time.Now(),
			Orders:    make([]*Order, 0),
			Status:    SettlementPending,
		}

		// Add some orders
		order1 := &Order{ID: 1, Symbol: "BTC-USD", Price: 50000, Size: 1}
		order2 := &Order{ID: 2, Symbol: "ETH-USD", Price: 3000, Size: 10}
		batch.Orders = append(batch.Orders, order1, order2)

		assert.Len(t, batch.Orders, 2)
		assert.Equal(t, SettlementPending, batch.Status)

		// Simulate processing
		batch.Status = SettlementProcessing
		assert.Equal(t, SettlementProcessing, batch.Status)

		// Simulate completion
		batch.Status = SettlementComplete
		assert.Equal(t, SettlementComplete, batch.Status)
	})
}

// TestClearingEngine tests the clearing engine
func TestClearingEngine(t *testing.T) {
	t.Run("CreateClearingEngine", func(t *testing.T) {
		engine := &ClearingEngine{
			positions:          make(map[string]map[string]*Position),
			balances:           make(map[string]*Balance),
			marginRequirements: make(map[string]*MarginRequirement),
		}

		assert.NotNil(t, engine)
		assert.NotNil(t, engine.positions)
		assert.NotNil(t, engine.balances)
		assert.NotNil(t, engine.marginRequirements)
	})

	t.Run("Position", func(t *testing.T) {
		pos := &Position{
			Symbol:        "BTC-USD",
			User:          "user1",
			Size:          1.5,
			EntryPrice:    50000,
			MarkPrice:     51000,
			UnrealizedPnL: 1500,
			RealizedPnL:   0,
		}

		assert.Equal(t, "BTC-USD", pos.Symbol)
		assert.Equal(t, "user1", pos.User)
		assert.Equal(t, 1.5, pos.Size)
		assert.Equal(t, 50000.0, pos.EntryPrice)
		assert.Equal(t, 51000.0, pos.MarkPrice)
		assert.Equal(t, 1500.0, pos.UnrealizedPnL)
	})

	t.Run("Balance", func(t *testing.T) {
		balance := &Balance{
			User:       "user1",
			Available:  big.NewInt(100000),
			Locked:     big.NewInt(50000),
			Total:      big.NewInt(150000),
			LastUpdate: time.Now(),
		}

		assert.Equal(t, "user1", balance.User)
		assert.Equal(t, big.NewInt(100000), balance.Available)
		assert.Equal(t, big.NewInt(50000), balance.Locked)
		assert.Equal(t, big.NewInt(150000), balance.Total)
	})

	t.Run("MarginRequirement", func(t *testing.T) {
		margin := &MarginRequirement{
			User:              "user1",
			InitialMargin:     big.NewInt(10000),
			MaintenanceMargin: big.NewInt(5000),
			MarginRatio:       0.2,
			LastCalculation:   time.Now(),
		}

		assert.Equal(t, "user1", margin.User)
		assert.Equal(t, big.NewInt(10000), margin.InitialMargin)
		assert.Equal(t, big.NewInt(5000), margin.MaintenanceMargin)
		assert.Equal(t, 0.2, margin.MarginRatio)
	})
}

// TestXChainEvents tests X-Chain event handling
func TestXChainEvents(t *testing.T) {
	t.Run("OrderSettledEvent", func(t *testing.T) {
		event := &OrderSettledEvent{
			OrderID:     1,
			TxHash:      "0xabcdef",
			BlockNumber: 100,
			Timestamp:   time.Now(),
		}

		assert.Equal(t, uint64(1), event.OrderID)
		assert.Equal(t, "0xabcdef", event.TxHash)
		assert.Equal(t, uint64(100), event.BlockNumber)
	})

	t.Run("BatchSettledEvent", func(t *testing.T) {
		event := &BatchSettledEvent{
			BatchID:     1,
			TxHash:      "0xabcdef",
			OrderCount:  10,
			TotalVolume: big.NewInt(1000000),
			Timestamp:   time.Now(),
		}

		assert.Equal(t, uint64(1), event.BatchID)
		assert.Equal(t, "0xabcdef", event.TxHash)
		assert.Equal(t, 10, event.OrderCount)
		assert.Equal(t, big.NewInt(1000000), event.TotalVolume)
	})

	t.Run("SettlementFailedEvent", func(t *testing.T) {
		event := &SettlementFailedEvent{
			BatchID:   1,
			Reason:    "insufficient gas",
			Timestamp: time.Now(),
		}

		assert.Equal(t, uint64(1), event.BatchID)
		assert.Equal(t, "insufficient gas", event.Reason)
	})
}

// TestXChainOracle tests oracle integration
func TestXChainOracle(t *testing.T) {
	t.Run("OraclePrice", func(t *testing.T) {
		price := &OraclePrice{
			Symbol:    "BTC-USD",
			Price:     50000,
			Timestamp: time.Now(),
			Source:    "chainlink",
		}

		assert.Equal(t, "BTC-USD", price.Symbol)
		assert.Equal(t, 50000.0, price.Price)
		assert.Equal(t, "chainlink", price.Source)
	})

	t.Run("OracleUpdate", func(t *testing.T) {
		update := &OracleUpdate{
			Prices: map[string]float64{
				"BTC-USD": 50000,
				"ETH-USD": 3000,
				"SOL-USD": 100,
			},
			Timestamp: time.Now(),
			Signature: "0xsignature",
		}

		assert.Len(t, update.Prices, 3)
		assert.Equal(t, 50000.0, update.Prices["BTC-USD"])
		assert.Equal(t, 3000.0, update.Prices["ETH-USD"])
		assert.Equal(t, 100.0, update.Prices["SOL-USD"])
		assert.Equal(t, "0xsignature", update.Signature)
	})
}

// TestXChainGasOptimization tests gas optimization
func TestXChainGasOptimization(t *testing.T) {
	t.Run("GasEstimator", func(t *testing.T) {
		estimator := &GasEstimator{
			baseGas:     21000,
			perOrderGas: 50000,
			maxGasPrice: big.NewInt(100000000000), // 100 gwei
			priorityFee: big.NewInt(2000000000),   // 2 gwei
		}

		assert.Equal(t, uint64(21000), estimator.baseGas)
		assert.Equal(t, uint64(50000), estimator.perOrderGas)
		assert.Equal(t, big.NewInt(100000000000), estimator.maxGasPrice)
		assert.Equal(t, big.NewInt(2000000000), estimator.priorityFee)
	})

	t.Run("EstimateGas", func(t *testing.T) {
		estimator := &GasEstimator{
			baseGas:     21000,
			perOrderGas: 50000,
		}

		// Estimate for 10 orders
		orderCount := 10
		expectedGas := estimator.baseGas + uint64(orderCount)*estimator.perOrderGas
		assert.Equal(t, uint64(521000), expectedGas)
	})

	t.Run("GasOptimization", func(t *testing.T) {
		optimizer := &GasOptimizer{
			batchSize:      100,
			maxBatchGas:    3000000,
			targetGasPrice: big.NewInt(50000000000), // 50 gwei
		}

		assert.Equal(t, 100, optimizer.batchSize)
		assert.Equal(t, uint64(3000000), optimizer.maxBatchGas)
		assert.Equal(t, big.NewInt(50000000000), optimizer.targetGasPrice)
	})
}

// TestXChainSecurity tests security features
func TestXChainSecurity(t *testing.T) {
	t.Run("SignatureVerification", func(t *testing.T) {
		sig := &Signature{
			V: 27,
			R: "0xr",
			S: "0xs",
		}

		assert.Equal(t, uint8(27), sig.V)
		assert.Equal(t, "0xr", sig.R)
		assert.Equal(t, "0xs", sig.S)
	})

	t.Run("NonceManager", func(t *testing.T) {
		manager := &NonceManager{
			currentNonce:  100,
			pendingNonces: make(map[uint64]bool),
		}

		assert.Equal(t, uint64(100), manager.currentNonce)
		assert.NotNil(t, manager.pendingNonces)

		// Get next nonce
		manager.currentNonce++
		assert.Equal(t, uint64(101), manager.currentNonce)
	})

	t.Run("AccessControl", func(t *testing.T) {
		acl := &AccessControl{
			admins:    map[string]bool{"admin1": true},
			operators: map[string]bool{"op1": true, "op2": true},
			blacklist: map[string]bool{"bad1": true},
		}

		assert.True(t, acl.admins["admin1"])
		assert.True(t, acl.operators["op1"])
		assert.True(t, acl.blacklist["bad1"])
	})
}

// TestXChainMonitoring tests monitoring and metrics
func TestXChainMonitoring(t *testing.T) {
	t.Run("Metrics", func(t *testing.T) {
		metrics := &XChainMetrics{
			SettlementLatency: 2 * time.Second,
			GasUsedTotal:      big.NewInt(10000000),
			SuccessRate:       0.99,
			FailureCount:      10,
			LastUpdate:        time.Now(),
		}

		assert.Equal(t, 2*time.Second, metrics.SettlementLatency)
		assert.Equal(t, big.NewInt(10000000), metrics.GasUsedTotal)
		assert.Equal(t, 0.99, metrics.SuccessRate)
		assert.Equal(t, uint64(10), metrics.FailureCount)
	})

	t.Run("HealthCheck", func(t *testing.T) {
		health := &HealthCheck{
			Status:      "healthy",
			BlockHeight: 1000000,
			PeerCount:   8,
			Syncing:     false,
			LastCheck:   time.Now(),
		}

		assert.Equal(t, "healthy", health.Status)
		assert.Equal(t, uint64(1000000), health.BlockHeight)
		assert.Equal(t, 8, health.PeerCount)
		assert.False(t, health.Syncing)
	})

	t.Run("AlertSystem", func(t *testing.T) {
		alert := &Alert{
			Level:     "critical",
			Message:   "Settlement failure rate exceeded threshold",
			Timestamp: time.Now(),
			Resolved:  false,
		}

		assert.Equal(t, "critical", alert.Level)
		assert.Contains(t, alert.Message, "Settlement failure")
		assert.False(t, alert.Resolved)
	})
}

// TestXChainRecovery tests recovery mechanisms
func TestXChainRecovery(t *testing.T) {
	t.Run("RecoveryManager", func(t *testing.T) {
		manager := &RecoveryManager{
			failedBatches: make(map[uint64]*SettlementBatch),
			retryAttempts: make(map[uint64]int),
			maxRetries:    3,
			retryDelay:    30 * time.Second,
		}

		assert.NotNil(t, manager.failedBatches)
		assert.NotNil(t, manager.retryAttempts)
		assert.Equal(t, 3, manager.maxRetries)
		assert.Equal(t, 30*time.Second, manager.retryDelay)
	})

	t.Run("RetryPolicy", func(t *testing.T) {
		policy := &RetryPolicy{
			MaxAttempts:   3,
			InitialDelay:  1 * time.Second,
			MaxDelay:      30 * time.Second,
			BackoffFactor: 2.0,
		}

		assert.Equal(t, 3, policy.MaxAttempts)
		assert.Equal(t, 1*time.Second, policy.InitialDelay)
		assert.Equal(t, 30*time.Second, policy.MaxDelay)
		assert.Equal(t, 2.0, policy.BackoffFactor)
	})

	t.Run("DisasterRecovery", func(t *testing.T) {
		dr := &DisasterRecovery{
			backupEndpoints: []string{
				"https://backup1.lux.network",
				"https://backup2.lux.network",
			},
			currentEndpoint: 0,
			lastSwitch:      time.Now(),
		}

		assert.Len(t, dr.backupEndpoints, 2)
		assert.Equal(t, 0, dr.currentEndpoint)

		// Switch endpoint
		dr.currentEndpoint = (dr.currentEndpoint + 1) % len(dr.backupEndpoints)
		assert.Equal(t, 1, dr.currentEndpoint)
	})
}

// Test-specific helper structures can go here if needed