dex/pkg/lx/bridge_advanced_test.go

//go:build !short

package lx

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

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

// Test bridge functions with 0% coverage
func TestBridgeAdvancedFunctions(t *testing.T) {
	bridge := NewEnhancedBridge()

	t.Run("executeTransfer", func(t *testing.T) {
		// Create a test transfer
		transfer := &BridgeTransfer{
			ID:          "test-transfer-001",
			Asset:       "ETH",
			Amount:      big.NewInt(1000000000000000000), // 1 ETH
			SourceChain: "ethereum",
			DestChain:   "avalanche",
			Status:      BridgeStatusConfirmed,
			InitiatedAt: time.Now(),
		}

		// Add chains to bridge
		bridge.Chains["ethereum"] = &ChainConfig{
			ChainID:         "ethereum",
			Name:            "Ethereum",
			Active:          true,
			Confirmations:   12,
			BlockTime:       15 * time.Second,
			GasPrice:        big.NewInt(20000000000), // 20 gwei
			ContractAddress: "0x123...",
		}
		bridge.Chains["avalanche"] = &ChainConfig{
			ChainID:         "avalanche",
			Name:            "Avalanche",
			Active:          true,
			Confirmations:   3,
			BlockTime:       2 * time.Second,
			GasPrice:        big.NewInt(25000000000), // 25 nAVAX
			ContractAddress: "0x456...",
		}

		// Store transfer in bridge
		bridge.PendingTransfers[transfer.ID] = transfer

		// Execute transfer should complete successfully in test environment
		err := bridge.executeTransfer(transfer)
		assert.NoError(t, err) // Should succeed with proper setup

		// Check that status was updated to completed
		assert.Equal(t, BridgeStatusCompleted, transfer.Status)
	})

	t.Run("failTransfer", func(t *testing.T) {
		transfer := &BridgeTransfer{
			ID:          "test-fail-001",
			Asset:       "BTC",
			Amount:      big.NewInt(100000000), // 1 BTC
			SourceChain: "bitcoin",
			DestChain:   "ethereum",
			Status:      BridgeStatusExecuting,
			InitiatedAt: time.Now(),
		}

		bridge.PendingTransfers[transfer.ID] = transfer

		err := bridge.failTransfer(transfer, "test failure reason")
		assert.NoError(t, err) // failTransfer should not return error

		// Check status was updated
		assert.Equal(t, BridgeStatusFailed, transfer.Status)
	})

	t.Run("executeOnChain", func(t *testing.T) {
		chainConfig := &ChainConfig{
			ChainID:         "test-chain",
			Name:            "Test Chain",
			Active:          true,
			Confirmations:   1,
			BlockTime:       3 * time.Second,
			ContractAddress: "0xtest...",
		}

		transfer := &BridgeTransfer{
			ID:          "test-onchain-001",
			Asset:       "USDC",
			Amount:      big.NewInt(1000000), // 1 USDC
			SourceChain: "ethereum",
			DestChain:   "test-chain",
			Status:      BridgeStatusExecuting,
		}

		// Should return a transaction hash in test environment
		txHash, err := bridge.executeOnChain(chainConfig, transfer)
		assert.NoError(t, err)     // Should succeed in test environment
		assert.NotEmpty(t, txHash) // Should return mock transaction hash
	})

	t.Run("waitForConfirmation", func(t *testing.T) {
		chainConfig := &ChainConfig{
			ChainID:       "test-chain",
			Confirmations: 3,
			BlockTime:     1 * time.Second,
		}

		// Test with mock transaction hash
		txHash := "0xtest123..."

		confirmed, err := bridge.waitForConfirmation(chainConfig, txHash)
		assert.NoError(t, err)    // Should succeed in test environment
		assert.True(t, confirmed) // Should return confirmed in test
	})

	t.Run("distributeFees", func(t *testing.T) {
		transfer := &BridgeTransfer{
			ID:          "test-fees-001",
			Asset:       "ETH",
			Amount:      big.NewInt(1000000000000000000), // 1 ETH
			SourceChain: "ethereum",
			Fee:         big.NewInt(5000000000000000), // 0.005 ETH fee
		}

		// Create a test pool for fee distribution
		availLiq, _ := new(big.Int).SetString("10000000000000000000", 10) // 10 ETH
		pool := &BridgeLiquidityPool{
			Asset:              "ETH",
			AvailableLiquidity: availLiq,
			Providers:          make(map[string]*LiquidityProvider),
		}
		bridge.distributeFees(pool, transfer.Fee)
		// distributeFees doesn't return error
	})

	t.Run("GetHistoricalBars", func(t *testing.T) {
		// Test alpaca source function with 0% coverage
		source := NewAlpacaSource("test_key", "test_secret")

		start := time.Now().Add(-24 * time.Hour)
		end := time.Now()
		bars, err := source.GetHistoricalBars("AAPL", start, end, "day")
		assert.Error(t, err) // Expected to error without valid API credentials
		assert.Nil(t, bars)
	})
}

// Test orderbook subscription functions with 0% coverage
func TestOrderBookSubscriptionFunctions(t *testing.T) {
	ob := NewOrderBook("TEST-PAIR")

	t.Run("Subscribe", func(t *testing.T) {
		ch := make(chan MarketDataUpdate, 1)
		ob.Subscribe(ch)

		// Verify subscription doesn't error
		assert.NotNil(t, ch)
	})

	t.Run("Unsubscribe", func(t *testing.T) {
		// Create and subscribe a channel
		ch := make(chan MarketDataUpdate, 1)
		ob.Subscribe(ch)

		// Unsubscribe the channel
		ob.Unsubscribe(ch)

		// Should complete without error
		assert.NotNil(t, ch)
	})

	t.Run("UnsubscribeNonexistent", func(t *testing.T) {
		ch := make(chan MarketDataUpdate, 1)
		ob.Unsubscribe(ch) // Should not error for non-existent channel
		assert.NotNil(t, ch)
	})

	t.Run("GetRecent", func(t *testing.T) {
		// Test CircularTradeBuffer GetRecent function
		buffer := &CircularTradeBuffer{
			buffer:   make([]Trade, 10),
			head:     0,
			size:     10,
			capacity: 10,
		}

		// Add some test trades
		buffer.Add(Trade{
			ID:        1,
			Price:     50000,
			Size:      1.0,
			Timestamp: time.Now(),
		})
		buffer.Add(Trade{
			ID:        2,
			Price:     50100,
			Size:      0.5,
			Timestamp: time.Now(),
		})

		recent := buffer.GetRecent(5)
		assert.NotNil(t, recent)
		assert.True(t, len(recent) <= 5)
		assert.True(t, uint64(len(recent)) <= buffer.size)
	})
}

// Test additional bridge transfer states and error handling
func TestBridgeTransferStates(t *testing.T) {
	bridge := NewEnhancedBridge()

	t.Run("TransferStateTransitions", func(t *testing.T) {
		transfer := &BridgeTransfer{
			ID:          "state-test-001",
			Asset:       "USDT",
			Amount:      big.NewInt(1000000), // 1 USDT
			SourceChain: "ethereum",
			DestChain:   "polygon",
			Status:      BridgeStatusPending,
			InitiatedAt: time.Now(),
		}

		bridge.PendingTransfers[transfer.ID] = transfer

		// Test state progression
		assert.Equal(t, BridgeStatusPending, transfer.Status)

		// Simulate validation
		transfer.Status = BridgeStatusValidating
		assert.Equal(t, BridgeStatusValidating, transfer.Status)

		// Simulate completion
		transfer.Status = BridgeStatusCompleted
		assert.Equal(t, BridgeStatusCompleted, transfer.Status)
	})

	t.Run("TransferTimeout", func(t *testing.T) {
		transfer := &BridgeTransfer{
			ID:          "timeout-test-001",
			Asset:       "DAI",
			Amount:      big.NewInt(1000000000000000000), // 1 DAI
			SourceChain: "ethereum",
			DestChain:   "arbitrum",
			Status:      BridgeStatusExecuting,
			InitiatedAt: time.Now().Add(-24 * time.Hour), // Old transfer
		}

		bridge.PendingTransfers[transfer.ID] = transfer

		// Check if transfer is expired
		isExpired := time.Since(transfer.InitiatedAt) > 12*time.Hour
		assert.True(t, isExpired)

		// Would typically trigger timeout handling
		if isExpired && transfer.Status == BridgeStatusExecuting {
			transfer.Status = BridgeStatusFailed
		}

		assert.Equal(t, BridgeStatusFailed, transfer.Status)
	})

	t.Run("BridgeAssetConfiguration", func(t *testing.T) {
		// Test bridge asset configuration
		asset := &BridgeAsset{
			Symbol:          "WBTC",
			Name:            "Wrapped Bitcoin",
			Decimals:        8,
			SourceContract:  "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
			MinTransfer:     big.NewInt(100000),      // 0.001 WBTC
			MaxTransfer:     big.NewInt(10000000000), // 100 WBTC
			WrappedContract: make(map[string]string),
		}

		// Add wrapped contract for Ethereum
		asset.WrappedContract["ethereum"] = "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599"

		assert.Equal(t, "WBTC", asset.Symbol)
		assert.Equal(t, uint8(8), asset.Decimals)
		assert.NotNil(t, asset.WrappedContract["ethereum"])
		assert.Equal(t, "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599", asset.WrappedContract["ethereum"])
	})
}

// Test validator and fraud proof functions
func TestBridgeValidatorFunctions(t *testing.T) {
	bridge := NewEnhancedBridge()

	t.Run("ValidatorOperations", func(t *testing.T) {
		stakeAmount, _ := new(big.Int).SetString("1000000000000000000000", 10) // 1000 ETH
		validator := &BridgeValidator{
			Address:  "validator1",
			Stake:    stakeAmount,
			Active:   true,
			JoinedAt: time.Now(),
		}

		bridge.BridgeValidators = append(bridge.BridgeValidators, validator)

		assert.Equal(t, "validator1", validator.Address)
		assert.True(t, validator.Active)
		assert.Equal(t, 1, len(bridge.BridgeValidators))
	})

	t.Run("SlashValidatorPartial", func(t *testing.T) {
		// Create validator with stake
		stakeAmount, _ := new(big.Int).SetString("2000000000000000000000", 10) // 2000 ETH
		validator := &BridgeValidator{
			Address:  "validator2",
			Stake:    stakeAmount,
			Active:   true,
			JoinedAt: time.Now(),
		}
		bridge.BridgeValidators = append(bridge.BridgeValidators, validator)

		// Test validator slashing (simulate)
		originalStake := new(big.Int).Set(validator.Stake)
		validator.Slashed = true
		validator.Active = false

		// Check that validator was slashed
		assert.True(t, validator.Slashed)
		assert.False(t, validator.Active)
		assert.NotNil(t, originalStake)
	})

	t.Run("MultisigOperations", func(t *testing.T) {
		multisigBridge := &MultisigBridge{
			RequiredSigs: 3,
			TotalSigners: 5,
			Signers:      make(map[string]*BridgeSigner),
			PendingTxs:   make(map[string]*MultisigTx),
		}

		// Add signers
		for i := 1; i <= 5; i++ {
			address := fmt.Sprintf("val%d", i)
			multisigBridge.Signers[address] = &BridgeSigner{
				Address: address,
				Weight:  1,
				Active:  true,
			}
		}

		// Simulate enough signatures for threshold
		assert.Equal(t, 3, multisigBridge.RequiredSigs)
		assert.Equal(t, 5, multisigBridge.TotalSigners)
		assert.Equal(t, 5, len(multisigBridge.Signers))
	})
}

// Test batch processing functions
func TestBridgeBatchProcessing(t *testing.T) {
	t.Run("BatchProcessor", func(t *testing.T) {
		processor := &BatchBridgeProcessor{
			BatchSize:       10,
			BatchInterval:   5 * time.Second,
			PendingBatch:    make([]*BridgeTransfer, 0),
			ProcessingBatch: make([]*BridgeTransfer, 0),
		}

		// Add transactions to batch
		for i := 0; i < 5; i++ {
			tx := &BridgeTransfer{
				ID:          fmt.Sprintf("batch-tx-%d", i),
				Asset:       "USDC",
				Amount:      big.NewInt(1000000),
				SourceChain: "ethereum",
			}
			processor.PendingBatch = append(processor.PendingBatch, tx)
		}

		assert.Equal(t, 5, len(processor.PendingBatch))
		assert.Equal(t, 0, len(processor.ProcessingBatch))
		assert.Equal(t, 10, processor.BatchSize)

		// Simulate batch processing by moving pending to processing
		processor.ProcessingBatch = append(processor.ProcessingBatch, processor.PendingBatch...)
		processor.PendingBatch = make([]*BridgeTransfer, 0)

		assert.Equal(t, 0, len(processor.PendingBatch))
		assert.Equal(t, 5, len(processor.ProcessingBatch))
	})

	t.Run("BridgeMetrics", func(t *testing.T) {
		totalVol, _ := new(big.Int).SetString("1000000000000000000000", 10) // 1000 ETH
		metrics := &BridgeMetrics{
			TotalTransfers: 100,
			TotalVolume:    totalVol,
			AverageTime:    30 * time.Second,
			SuccessRate:    0.95,
		}

		assert.Equal(t, uint64(100), metrics.TotalTransfers)
		assert.Equal(t, 0.95, metrics.SuccessRate)
		assert.NotNil(t, metrics.TotalVolume)
	})
}