lntest/channels: introduce subpackage to deduplicate static structs

breacharbiter_test.go

@@ -29,6 +29,7 @@ import (
 	"github.com/lightningnetwork/lnd/htlcswitch"
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/keychain"
+	"github.com/lightningnetwork/lnd/lntest/channels"
 	"github.com/lightningnetwork/lnd/lntest/mock"
 	"github.com/lightningnetwork/lnd/lntest/wait"
 	"github.com/lightningnetwork/lnd/lnwallet"
@@ -1679,7 +1680,7 @@ func createTestArbiter(t *testing.T, contractBreaches chan *ContractBreachEvent,
 	})
 
 	aliceKeyPriv, _ := btcec.PrivKeyFromBytes(btcec.S256(),
-		alicesPrivKey)
+		channels.AlicesPrivKey)
 	signer := &mock.SingleSigner{Privkey: aliceKeyPriv}
 
 	// Assemble our test arbiter.
@@ -1714,9 +1715,9 @@ func createTestArbiter(t *testing.T, contractBreaches chan *ContractBreachEvent,
 func createInitChannels(revocationWindow int) (*lnwallet.LightningChannel, *lnwallet.LightningChannel, func(), error) {
 
 	aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
-		alicesPrivKey)
+		channels.AlicesPrivKey)
 	bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
-		bobsPrivKey)
+		channels.BobsPrivKey)
 
 	channelCapacity, err := btcutil.NewAmount(10)
 	if err != nil {
@@ -1730,7 +1731,7 @@ func createInitChannels(revocationWindow int) (*lnwallet.LightningChannel, *lnwa
 	csvTimeoutBob := uint32(4)
 
 	prevOut := &wire.OutPoint{
-		Hash:  chainhash.Hash(testHdSeed),
+		Hash:  channels.TestHdSeed,
 		Index: 0,
 	}
 	fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
@@ -1887,7 +1888,7 @@ func createInitChannels(revocationWindow int) (*lnwallet.LightningChannel, *lnwa
 		RemoteCommitment:        aliceCommit,
 		Db:                      dbAlice,
 		Packager:                channeldb.NewChannelPackager(shortChanID),
-		FundingTxn:              testTx,
+		FundingTxn:              channels.TestFundingTx,
 	}
 	bobChannelState := &channeldb.OpenChannel{
 		LocalChanCfg:            bobCfg,

channeldb/channel_test.go

@@ -8,16 +8,16 @@ import (
 	"runtime"
 	"testing"
 
-	"github.com/lightningnetwork/lnd/channeldb/kvdb"
-
 	"github.com/btcsuite/btcd/btcec"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	_ "github.com/btcsuite/btcwallet/walletdb/bdb"
 	"github.com/davecgh/go-spew/spew"
+	"github.com/lightningnetwork/lnd/channeldb/kvdb"
 	"github.com/lightningnetwork/lnd/clock"
 	"github.com/lightningnetwork/lnd/keychain"
+	"github.com/lightningnetwork/lnd/lntest/channels"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/lightningnetwork/lnd/shachain"
 )
@@ -34,38 +34,6 @@ var (
 		0x48, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
 		0x2d, 0xe7, 0x93, 0xe4,
 	}
-	testTx = &wire.MsgTx{
-		Version: 1,
-		TxIn: []*wire.TxIn{
-			{
-				PreviousOutPoint: wire.OutPoint{
-					Hash:  chainhash.Hash{},
-					Index: 0xffffffff,
-				},
-				SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
-				Sequence:        0xffffffff,
-			},
-		},
-		TxOut: []*wire.TxOut{
-			{
-				Value: 5000000000,
-				PkScript: []byte{
-					0x41, // OP_DATA_65
-					0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
-					0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
-					0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
-					0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
-					0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
-					0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
-					0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
-					0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
-					0xa6, // 65-byte signature
-					0xac, // OP_CHECKSIG
-				},
-			},
-		},
-		LockTime: 5,
-	}
 	privKey, pubKey = btcec.PrivKeyFromBytes(btcec.S256(), key[:])
 
 	wireSig, _ = lnwire.NewSigFromSignature(testSig)
@@ -340,7 +308,7 @@ func createTestChannelState(t *testing.T, cdb *DB) *OpenChannel {
 			RemoteBalance: lnwire.MilliSatoshi(3000),
 			CommitFee:     btcutil.Amount(rand.Int63()),
 			FeePerKw:      btcutil.Amount(5000),
-			CommitTx:      testTx,
+			CommitTx:      channels.TestFundingTx,
 			CommitSig:     bytes.Repeat([]byte{1}, 71),
 		},
 		RemoteCommitment: ChannelCommitment{
@@ -349,7 +317,7 @@ func createTestChannelState(t *testing.T, cdb *DB) *OpenChannel {
 			RemoteBalance: lnwire.MilliSatoshi(9000),
 			CommitFee:     btcutil.Amount(rand.Int63()),
 			FeePerKw:      btcutil.Amount(5000),
-			CommitTx:      testTx,
+			CommitTx:      channels.TestFundingTx,
 			CommitSig:     bytes.Repeat([]byte{1}, 71),
 		},
 		NumConfsRequired:        4,
@@ -359,7 +327,7 @@ func createTestChannelState(t *testing.T, cdb *DB) *OpenChannel {
 		RevocationStore:         store,
 		Db:                      cdb,
 		Packager:                NewChannelPackager(chanID),
-		FundingTxn:              testTx,
+		FundingTxn:              channels.TestFundingTx,
 		ThawHeight:              uint32(defaultPendingHeight),
 	}
 }

contractcourt/briefcase_test.go

@@ -18,6 +18,7 @@ import (
 	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/channeldb/kvdb"
 	"github.com/lightningnetwork/lnd/input"
+	"github.com/lightningnetwork/lnd/lntest/channels"
 	"github.com/lightningnetwork/lnd/lnwallet"
 )
 
@@ -135,19 +136,7 @@ var (
 		LockTime: 123,
 	}
 
-	// A valid, DER-encoded signature (taken from btcec unit tests).
+	testSig, _ = btcec.ParseDERSignature(channels.TestSigBytes, btcec.S256())
-	testSigBytes = []byte{
-		0x30, 0x44, 0x02, 0x20, 0x4e, 0x45, 0xe1, 0x69,
-		0x32, 0xb8, 0xaf, 0x51, 0x49, 0x61, 0xa1, 0xd3,
-		0xa1, 0xa2, 0x5f, 0xdf, 0x3f, 0x4f, 0x77, 0x32,
-		0xe9, 0xd6, 0x24, 0xc6, 0xc6, 0x15, 0x48, 0xab,
-		0x5f, 0xb8, 0xcd, 0x41, 0x02, 0x20, 0x18, 0x15,
-		0x22, 0xec, 0x8e, 0xca, 0x07, 0xde, 0x48, 0x60,
-		0xa4, 0xac, 0xdd, 0x12, 0x90, 0x9d, 0x83, 0x1c,
-		0xc5, 0x6c, 0xbb, 0xac, 0x46, 0x22, 0x08, 0x22,
-		0x21, 0xa8, 0x76, 0x8d, 0x1d, 0x09,
-	}
-	testSig, _ = btcec.ParseDERSignature(testSigBytes, btcec.S256())
 
 	testSignDetails = &input.SignDetails{
 		SignDesc:    testSignDesc,

htlcswitch/test_utils.go

@@ -29,6 +29,7 @@ import (
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/keychain"
 	"github.com/lightningnetwork/lnd/lnpeer"
+	"github.com/lightningnetwork/lnd/lntest/channels"
 	"github.com/lightningnetwork/lnd/lntest/mock"
 	"github.com/lightningnetwork/lnd/lntest/wait"
 	"github.com/lightningnetwork/lnd/lntypes"
@@ -55,40 +56,6 @@ var (
 	_, _ = testSig.S.SetString("1880105606924982582529128710493133386286603"+
 		"3135609736119018462340006816851118", 10)
 
-	// testTx is used as the default funding txn for single-funder channels.
-	testTx = &wire.MsgTx{
-		Version: 1,
-		TxIn: []*wire.TxIn{
-			{
-				PreviousOutPoint: wire.OutPoint{
-					Hash:  chainhash.Hash{},
-					Index: 0xffffffff,
-				},
-				SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
-				Sequence:        0xffffffff,
-			},
-		},
-		TxOut: []*wire.TxOut{
-			{
-				Value: 5000000000,
-				PkScript: []byte{
-					0x41, // OP_DATA_65
-					0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
-					0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
-					0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
-					0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
-					0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
-					0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
-					0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
-					0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
-					0xa6, // 65-byte signature
-					0xac, // OP_CHECKSIG
-				},
-			},
-		},
-		LockTime: 5,
-	}
-
 	testBatchTimeout = 50 * time.Millisecond
 )
 
@@ -341,7 +308,7 @@ func createTestChannel(alicePrivKey, bobPrivKey []byte,
 		ShortChannelID:          chanID,
 		Db:                      dbAlice,
 		Packager:                channeldb.NewChannelPackager(chanID),
-		FundingTxn:              testTx,
+		FundingTxn:              channels.TestFundingTx,
 	}
 
 	bobChannelState := &channeldb.OpenChannel{

lntest/channels/channels.go

@@ -1,4 +1,4 @@
-package lnd
+package channels
 
 import (
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
@@ -6,30 +6,33 @@ import (
 )
 
 var (
-	alicesPrivKey = []byte{
+	// AlicesPrivKey is the default alice private key.
+	AlicesPrivKey = []byte{
 		0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
 		0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
 		0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
 		0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
 	}
 
-	bobsPrivKey = []byte{
+	// BobsPrivKey is the default bob private key.
+	BobsPrivKey = []byte{
 		0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
 		0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
 		0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
 		0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
 	}
 
-	// Use a hard-coded HD seed.
+	// TestHdSeed is a hard-coded HD seed.
-	testHdSeed = [32]byte{
+	TestHdSeed = chainhash.Hash{
 		0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
 		0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
 		0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
 		0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
 	}
 
-	// testTx is used as the default funding txn for single-funder channels.
+	// TestFundingTx is a serializable transaction we use for mocking
-	testTx = &wire.MsgTx{
+	// the funding transaction.
+	TestFundingTx = &wire.MsgTx{
 		Version: 1,
 		TxIn: []*wire.TxIn{
 			{
@@ -61,4 +64,17 @@ var (
 		},
 		LockTime: 5,
 	}
+
+	// TestSigBytes is a valid, DER-encoded signature (taken from btcec unit tests).
+	TestSigBytes = []byte{
+		0x30, 0x44, 0x02, 0x20, 0x4e, 0x45, 0xe1, 0x69,
+		0x32, 0xb8, 0xaf, 0x51, 0x49, 0x61, 0xa1, 0xd3,
+		0xa1, 0xa2, 0x5f, 0xdf, 0x3f, 0x4f, 0x77, 0x32,
+		0xe9, 0xd6, 0x24, 0xc6, 0xc6, 0x15, 0x48, 0xab,
+		0x5f, 0xb8, 0xcd, 0x41, 0x02, 0x20, 0x18, 0x15,
+		0x22, 0xec, 0x8e, 0xca, 0x07, 0xde, 0x48, 0x60,
+		0xa4, 0xac, 0xdd, 0x12, 0x90, 0x9d, 0x83, 0x1c,
+		0xc5, 0x6c, 0xbb, 0xac, 0x46, 0x22, 0x08, 0x22,
+		0x21, 0xa8, 0x76, 0x8d, 0x1d, 0x09,
+	}
 )

peer/test_utils.go

@@ -21,6 +21,7 @@ import (
 	"github.com/lightningnetwork/lnd/htlcswitch"
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/keychain"
+	"github.com/lightningnetwork/lnd/lntest/channels"
 	"github.com/lightningnetwork/lnd/lntest/mock"
 	"github.com/lightningnetwork/lnd/lnwallet"
 	"github.com/lightningnetwork/lnd/lnwallet/chainfee"
@@ -41,64 +42,8 @@ const (
 )
 
 var (
-	alicesPrivKey = []byte{
-		0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
-		0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
-		0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
-		0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
-	}
-
-	bobsPrivKey = []byte{
-		0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
-		0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
-		0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
-		0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
-	}
-
-	// Use a hard-coded HD seed.
-	testHdSeed = [32]byte{
-		0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
-		0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
-		0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
-		0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
-	}
-
 	// Just use some arbitrary bytes as delivery script.
-	dummyDeliveryScript = alicesPrivKey
+	dummyDeliveryScript = channels.AlicesPrivKey
-
-	// testTx is used as the default funding txn for single-funder channels.
-	testTx = &wire.MsgTx{
-		Version: 1,
-		TxIn: []*wire.TxIn{
-			{
-				PreviousOutPoint: wire.OutPoint{
-					Hash:  chainhash.Hash{},
-					Index: 0xffffffff,
-				},
-				SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
-				Sequence:        0xffffffff,
-			},
-		},
-		TxOut: []*wire.TxOut{
-			{
-				Value: 5000000000,
-				PkScript: []byte{
-					0x41, // OP_DATA_65
-					0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
-					0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
-					0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
-					0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
-					0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
-					0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
-					0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
-					0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
-					0xa6, // 65-byte signature
-					0xac, // OP_CHECKSIG
-				},
-			},
-		},
-		LockTime: 5,
-	}
 )
 
 // noUpdate is a function which can be used as a parameter in createTestPeer to
@@ -114,11 +59,11 @@ func createTestPeer(notifier chainntnfs.ChainNotifier,
 	*Brontide, *lnwallet.LightningChannel, func(), error) {
 
 	aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(
-		btcec.S256(), alicesPrivKey,
+		btcec.S256(), channels.AlicesPrivKey,
 	)
 	aliceKeySigner := &keychain.PrivKeyDigestSigner{PrivKey: aliceKeyPriv}
 	bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(
-		btcec.S256(), bobsPrivKey,
+		btcec.S256(), channels.BobsPrivKey,
 	)
 
 	channelCapacity := btcutil.Amount(10 * 1e8)
@@ -129,7 +74,7 @@ func createTestPeer(notifier chainntnfs.ChainNotifier,
 	csvTimeoutBob := uint32(4)
 
 	prevOut := &wire.OutPoint{
-		Hash:  chainhash.Hash(testHdSeed),
+		Hash:  channels.TestHdSeed,
 		Index: 0,
 	}
 	fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
@@ -286,7 +231,7 @@ func createTestPeer(notifier chainntnfs.ChainNotifier,
 		RemoteCommitment:        aliceCommit,
 		Db:                      dbAlice,
 		Packager:                channeldb.NewChannelPackager(shortChanID),
-		FundingTxn:              testTx,
+		FundingTxn:              channels.TestFundingTx,
 	}
 	bobChannelState := &channeldb.OpenChannel{
 		LocalChanCfg:            bobCfg,