db/db_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"encoding/csv"
 	"encoding/hex"
-	"fmt"
 	"log"
 	"os"
 	"testing"
@@ -13,11 +12,9 @@ import (
 	"github.com/linxGnu/grocksdb"
 )
 
-const tmpPath = "../resources/tmp_rocksdb/"
+func TestIter(t *testing.T) {
 
-func TestClaimDiff(t *testing.T) {
-
-	filePath := "../resources/claim_diff.csv"
+	filePath := "../resources/reposted_claim.csv"
 
 	log.Println(filePath)
 	file, err := os.Open(filePath)
@@ -37,7 +34,13 @@ func TestClaimDiff(t *testing.T) {
 	if err != nil {
 		log.Println(err)
 	}
-	defer db.Close()
+	defer func() {
+		db.Close()
+		err = os.RemoveAll("./tmp")
+		if err != nil {
+			log.Println(err)
+		}
+	}()
 	for _, record := range records {
 		key, err := hex.DecodeString(record[0])
 		if err != nil {
@@ -50,13 +53,29 @@ func TestClaimDiff(t *testing.T) {
 		db.Put(wOpts, key, val)
 	}
 	// test prefix
-	options := NewIterateOptions().WithPrefix([]byte{prefixes.ClaimDiff}).WithIncludeValue(true)
+	options := NewIterateOptions().WithPrefix([]byte{prefixes.RepostedClaim}).WithIncludeValue(true)
 	ch := Iter(db, options)
 	var i = 0
 	for kv := range ch {
 		// log.Println(kv.Key)
-		gotKey := kv.Key.(*prefixes.TouchedOrDeletedClaimKey).PackKey()
-		got := kv.Value.(*prefixes.TouchedOrDeletedClaimValue).PackValue()
+		gotKey := kv.Key.(*prefixes.RepostedKey).PackKey()
+
+		keyPartial3 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 3)
+		keyPartial2 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 2)
+		keyPartial1 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 1)
+
+		// Check pack partial for sanity
+		if !bytes.HasPrefix(gotKey, keyPartial3) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial3, gotKey)
+		}
+		if !bytes.HasPrefix(gotKey, keyPartial2) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial2, gotKey)
+		}
+		if !bytes.HasPrefix(gotKey, keyPartial1) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial1, gotKey)
+		}
+
+		got := kv.Value.(*prefixes.RepostedValue).PackValue()
 		wantKey, err := hex.DecodeString(records[i][0])
 		if err != nil {
 			log.Println(err)
@@ -73,10 +92,7 @@ func TestClaimDiff(t *testing.T) {
 		}
 		i++
 	}
-	err = os.RemoveAll("tmp")
-	if err != nil {
-		log.Println(err)
-	}
+
 	// Test start / stop
 	start, err := hex.DecodeString(records[0][0])
 	if err != nil {
@@ -90,8 +106,7 @@ func TestClaimDiff(t *testing.T) {
 	ch2 := Iter(db, options2)
 	i = 0
 	for kv := range ch2 {
-		log.Println(kv.Key)
-		got := kv.Value.(*prefixes.TouchedOrDeletedClaimValue).PackValue()
+		got := kv.Value.(*prefixes.RepostedValue).PackValue()
 		want, err := hex.DecodeString(records[i][1])
 		if err != nil {
 			log.Println(err)
@@ -101,203 +116,4 @@ func TestClaimDiff(t *testing.T) {
 		}
 		i++
 	}
-	err = os.RemoveAll("tmp")
-	if err != nil {
-		log.Println(err)
-	}
-}
-
-func TestUTXO(t *testing.T) {
-
-	filePath := "../resources/utxo.csv"
-
-	log.Println(filePath)
-	file, err := os.Open(filePath)
-	if err != nil {
-		log.Println(err)
-	}
-	reader := csv.NewReader(file)
-	records, err := reader.ReadAll()
-	if err != nil {
-		log.Println(err)
-	}
-
-	wOpts := grocksdb.NewDefaultWriteOptions()
-	opts := grocksdb.NewDefaultOptions()
-	opts.SetCreateIfMissing(true)
-	db, err := grocksdb.OpenDb(opts, "tmp")
-	if err != nil {
-		log.Println(err)
-	}
-	defer db.Close()
-	for _, record := range records {
-		key, err := hex.DecodeString(record[0])
-		if err != nil {
-			log.Println(err)
-		}
-		val, err := hex.DecodeString(record[1])
-		if err != nil {
-			log.Println(err)
-		}
-		db.Put(wOpts, key, val)
-	}
-	// test prefix
-	options := NewIterateOptions().WithPrefix([]byte{prefixes.UTXO}).WithIncludeValue(true)
-	ch := Iter(db, options)
-	var i = 0
-	for kv := range ch {
-		log.Println(kv.Key)
-		got := kv.Value.(*prefixes.UTXOValue).PackValue()
-		want, err := hex.DecodeString(records[i][1])
-		if err != nil {
-			log.Println(err)
-		}
-		if !bytes.Equal(got, want) {
-			t.Errorf("got: %+v, want: %+v\n", got, want)
-		}
-		i++
-	}
-	err = os.RemoveAll("./tmp")
-	if err != nil {
-		log.Println(err)
-	}
-	// Test start / stop
-	start, err := hex.DecodeString(records[0][0])
-	if err != nil {
-		log.Println(err)
-	}
-	stop, err := hex.DecodeString(records[9][0])
-	if err != nil {
-		log.Println(err)
-	}
-	options2 := NewIterateOptions().WithStart(start).WithStop(stop).WithIncludeValue(true)
-	ch2 := Iter(db, options2)
-	i = 0
-	for kv := range ch2 {
-		log.Println(kv.Key)
-		got := kv.Value.(*prefixes.UTXOValue).PackValue()
-		want, err := hex.DecodeString(records[i][1])
-		if err != nil {
-			log.Println(err)
-		}
-		if !bytes.Equal(got, want) {
-			t.Errorf("got: %+v, want: %+v\n", got, want)
-		}
-		i++
-	}
-	err = os.RemoveAll("./tmp")
-	if err != nil {
-		log.Println(err)
-	}
-}
-
-func TestHashXUTXO(t *testing.T) {
-
-	tests := []struct {
-		name     string
-		filePath string
-	}{
-		{
-			name:     "Read HashX_UTXO correctly",
-			filePath: "../resources/hashx_utxo.csv",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			log.Println(tt.filePath)
-			file, err := os.Open(tt.filePath)
-			if err != nil {
-				log.Println(err)
-			}
-			reader := csv.NewReader(file)
-			records, err := reader.ReadAll()
-			if err != nil {
-				log.Println(err)
-			}
-
-			wOpts := grocksdb.NewDefaultWriteOptions()
-			opts := grocksdb.NewDefaultOptions()
-			opts.SetCreateIfMissing(true)
-			db, err := grocksdb.OpenDb(opts, "tmp")
-			if err != nil {
-				log.Println(err)
-			}
-			defer db.Close()
-			for _, record := range records {
-				key, err := hex.DecodeString(record[0])
-				if err != nil {
-					log.Println(err)
-				}
-				val, err := hex.DecodeString(record[1])
-				if err != nil {
-					log.Println(err)
-				}
-				db.Put(wOpts, key, val)
-			}
-			start, err := hex.DecodeString(records[0][0])
-			if err != nil {
-				log.Println(err)
-			}
-			options := NewIterateOptions().WithPrefix([]byte{prefixes.HashXUTXO}).WithStart(start).WithIncludeValue(true)
-			ch := Iter(db, options)
-			var i = 0
-			for kv := range ch {
-				log.Println(kv.Key)
-				got := kv.Value.(*prefixes.HashXUTXOValue).PackValue()
-				want, err := hex.DecodeString(records[i][1])
-				if err != nil {
-					log.Println(err)
-				}
-				if !bytes.Equal(got, want) {
-					t.Errorf("got: %+v, want: %+v\n", got, want)
-				}
-				i++
-				if i > 9 {
-					return
-				}
-			}
-			err = os.RemoveAll("./tmp")
-			if err != nil {
-				log.Println(err)
-			}
-		})
-	}
-}
-
-func TestUTXOKey_String(t *testing.T) {
-	tests := []struct {
-		name   string
-		prefix []byte
-		hashx  []byte
-		txnum  uint32
-		nout   uint16
-		want   string
-	}{
-		{
-			name:   "Converts to string",
-			prefix: []byte("u"),
-			hashx:  []byte("AAAAAAAAAA"),
-			txnum:  0,
-			nout:   0,
-			want:   "*prefixes.UTXOKey(hashX=41414141414141414141, tx_num=0, nout=0)",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			key := &prefixes.UTXOKey{
-				Prefix: tt.prefix,
-				HashX:  tt.hashx,
-				TxNum:  tt.txnum,
-				Nout:   tt.nout,
-			}
-
-			got := fmt.Sprint(key)
-			log.Println(got)
-			if got != tt.want {
-				t.Errorf("got: %s, want: %s\n", got, tt.want)
-			}
-		})
-	}
 }

db/prefixes/prefixes.go

@@ -747,14 +747,97 @@ class RepostedValue(typing.NamedTuple):
 type RepostedKey struct {
 	Prefix            []byte `json:"prefix"`
 	RepostedClaimHash []byte `json:"reposted_claim_hash"`
-	TxNum             int32  `json:"tx_num"`
-	Position          int32  `json:"position"`
+	TxNum             uint32 `json:"tx_num"`
+	Position          uint16 `json:"position"`
 }
 
 type RepostedValue struct {
 	ClaimHash []byte `json:"claim_hash"`
 }
 
+func (k *RepostedKey) PackKey() []byte {
+	prefixLen := 1
+	// b'>20sLH'
+	n := prefixLen + 20 + 4 + 2
+	key := make([]byte, n)
+	copy(key, k.Prefix)
+	copy(key[prefixLen:], k.RepostedClaimHash)
+	binary.BigEndian.PutUint32(key[prefixLen+20:], k.TxNum)
+	binary.BigEndian.PutUint16(key[prefixLen+24:], k.Position)
+
+	return key
+}
+
+func (v *RepostedValue) PackValue() []byte {
+	// b'>20s'
+	value := make([]byte, 20)
+	copy(value, v.ClaimHash)
+
+	return value
+}
+
+func RepostedKeyPackPartialNFields(nFields int) func(*RepostedKey) []byte {
+	return func(u *RepostedKey) []byte {
+		return RepostedKeyPackPartial(u, nFields)
+	}
+}
+
+func RepostedKeyPackPartial(k *RepostedKey, nFields int) []byte {
+	// Limit nFields between 0 and number of fields, we always at least need
+	// the prefix, and we never need to iterate past the number of fields.
+	if nFields > 3 {
+		nFields = 3
+	}
+	if nFields < 0 {
+		nFields = 0
+	}
+
+	prefixLen := 1
+	var n = prefixLen
+	for i := 0; i <= nFields; i++ {
+		switch i {
+		case 1:
+			n += 20
+		case 2:
+			n += 4
+		case 3:
+			n += 2
+		}
+	}
+
+	key := make([]byte, n)
+
+	for i := 0; i <= nFields; i++ {
+		switch i {
+		case 0:
+			copy(key, k.Prefix)
+		case 1:
+			copy(key[prefixLen:], k.RepostedClaimHash)
+		case 2:
+			binary.BigEndian.PutUint32(key[prefixLen+20:], k.TxNum)
+		case 3:
+			binary.BigEndian.PutUint16(key[prefixLen+24:], k.Position)
+		}
+	}
+
+	return key
+}
+
+func RepostedKeyUnpack(key []byte) *RepostedKey {
+	return &RepostedKey{
+		Prefix:            key[:1],
+		RepostedClaimHash: key[1:21],
+		TxNum:             binary.BigEndian.Uint32(key[21:]),
+		Position:          binary.BigEndian.Uint16(key[25:]),
+	}
+}
+
+func RepostedValueUnpack(value []byte) *RepostedValue {
+	return &RepostedValue{
+		ClaimHash: value[:20],
+	}
+}
+
 //
 // TouchedOrDeletedClaimKey / TouchedOrDeletedClaimValue
 //
@@ -848,6 +931,7 @@ func (v *TouchedOrDeletedClaimValue) PackValue() []byte {
 	value := make([]byte, n)
 	binary.BigEndian.PutUint32(value, touchedLen)
 	binary.BigEndian.PutUint32(value[4:], deletedLen)
+	// These are sorted for consistency with the Python implementation
 	sort.Slice(v.TouchedClaims, func(i, j int) bool { return bytes.Compare(v.TouchedClaims[i], v.TouchedClaims[j]) < 0 })
 	sort.Slice(v.DeletedClaims, func(i, j int) bool { return bytes.Compare(v.DeletedClaims[i], v.DeletedClaims[j]) < 0 })
 
@@ -917,14 +1001,10 @@ func TouchedOrDeletedClaimValueUnpack(value []byte) *TouchedOrDeletedClaimValue
 	deletedClaims := make([][]byte, deletedLen)
 	var j = 8
 	for i := 0; i < int(touchedLen); i++ {
-		//touchedClaims[i] = make([]byte, 20)
-		//copy(touchedClaims[i], value[j:j+20])
 		touchedClaims[i] = value[j : j+20]
 		j += 20
 	}
 	for i := 0; i < int(deletedLen); i++ {
-		//deletedClaims[i] = make([]byte, 20)
-		//copy(deletedClaims[i], value[j:j+20])
 		deletedClaims[i] = value[j : j+20]
 		j += 20
 	}
@@ -1167,7 +1247,9 @@ func UnpackGenericKey(key []byte) (byte, interface{}, error) {
 	case ActiveAmount:
 
 	case Repost:
+		return 0x0, nil, errors.Base("key unpack function for %v not implemented", firstByte)
 	case RepostedClaim:
+		return RepostedClaim, RepostedKeyUnpack(key), nil
 
 	case Undo:
 		return 0x0, nil, errors.Base("key unpack function for %v not implemented", firstByte)
@@ -1223,7 +1305,9 @@ func UnpackGenericValue(key, value []byte) (byte, interface{}, error) {
 	case ActiveAmount:
 
 	case Repost:
+		return 0x0, nil, nil
 	case RepostedClaim:
+		return RepostedClaim, RepostedValueUnpack(value), nil
 
 	case Undo:
 		return 0x0, nil, nil

db/prefixes/prefixes_test.go

@@ -0,0 +1,416 @@
+package prefixes_test
+
+import (
+	"bytes"
+	"encoding/csv"
+	"encoding/hex"
+	"fmt"
+	"log"
+	"os"
+	"testing"
+
+	dbpkg "github.com/lbryio/hub/db"
+	"github.com/lbryio/hub/db/prefixes"
+	"github.com/linxGnu/grocksdb"
+)
+
+func TestRepostedClaim(t *testing.T) {
+
+	filePath := "../../resources/reposted_claim.csv"
+
+	log.Println(filePath)
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Println(err)
+	}
+	reader := csv.NewReader(file)
+	records, err := reader.ReadAll()
+	if err != nil {
+		log.Println(err)
+	}
+
+	wOpts := grocksdb.NewDefaultWriteOptions()
+	opts := grocksdb.NewDefaultOptions()
+	opts.SetCreateIfMissing(true)
+	db, err := grocksdb.OpenDb(opts, "tmp")
+	if err != nil {
+		log.Println(err)
+	}
+	defer func() {
+		db.Close()
+		err = os.RemoveAll("./tmp")
+		if err != nil {
+			log.Println(err)
+		}
+	}()
+	for _, record := range records {
+		key, err := hex.DecodeString(record[0])
+		if err != nil {
+			log.Println(err)
+		}
+		val, err := hex.DecodeString(record[1])
+		if err != nil {
+			log.Println(err)
+		}
+		db.Put(wOpts, key, val)
+	}
+	// test prefix
+	options := dbpkg.NewIterateOptions().WithPrefix([]byte{prefixes.RepostedClaim}).WithIncludeValue(true)
+	ch := dbpkg.Iter(db, options)
+	var i = 0
+	for kv := range ch {
+		// log.Println(kv.Key)
+		gotKey := kv.Key.(*prefixes.RepostedKey).PackKey()
+
+		keyPartial3 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 3)
+		keyPartial2 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 2)
+		keyPartial1 := prefixes.RepostedKeyPackPartial(kv.Key.(*prefixes.RepostedKey), 1)
+
+		// Check pack partial for sanity
+		if !bytes.HasPrefix(gotKey, keyPartial3) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial3, gotKey)
+		}
+		if !bytes.HasPrefix(gotKey, keyPartial2) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial2, gotKey)
+		}
+		if !bytes.HasPrefix(gotKey, keyPartial1) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial1, gotKey)
+		}
+
+		got := kv.Value.(*prefixes.RepostedValue).PackValue()
+		wantKey, err := hex.DecodeString(records[i][0])
+		if err != nil {
+			log.Println(err)
+		}
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(gotKey, wantKey) {
+			t.Errorf("gotKey: %+v, wantKey: %+v\n", got, want)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+
+	// Test start / stop
+	start, err := hex.DecodeString(records[0][0])
+	if err != nil {
+		log.Println(err)
+	}
+	stop, err := hex.DecodeString(records[9][0])
+	if err != nil {
+		log.Println(err)
+	}
+	options2 := dbpkg.NewIterateOptions().WithStart(start).WithStop(stop).WithIncludeValue(true)
+	ch2 := dbpkg.Iter(db, options2)
+	i = 0
+	for kv := range ch2 {
+		got := kv.Value.(*prefixes.RepostedValue).PackValue()
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+}
+
+func TestClaimDiff(t *testing.T) {
+
+	filePath := "../../resources/claim_diff.csv"
+
+	log.Println(filePath)
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Println(err)
+	}
+	reader := csv.NewReader(file)
+	records, err := reader.ReadAll()
+	if err != nil {
+		log.Println(err)
+	}
+
+	wOpts := grocksdb.NewDefaultWriteOptions()
+	opts := grocksdb.NewDefaultOptions()
+	opts.SetCreateIfMissing(true)
+	db, err := grocksdb.OpenDb(opts, "tmp")
+	if err != nil {
+		log.Println(err)
+	}
+	defer func() {
+		db.Close()
+		err = os.RemoveAll("./tmp")
+		if err != nil {
+			log.Println(err)
+		}
+	}()
+	for _, record := range records {
+		key, err := hex.DecodeString(record[0])
+		if err != nil {
+			log.Println(err)
+		}
+		val, err := hex.DecodeString(record[1])
+		if err != nil {
+			log.Println(err)
+		}
+		db.Put(wOpts, key, val)
+	}
+	// test prefix
+	options := dbpkg.NewIterateOptions().WithPrefix([]byte{prefixes.ClaimDiff}).WithIncludeValue(true)
+	ch := dbpkg.Iter(db, options)
+	var i = 0
+	for kv := range ch {
+		// log.Println(kv.Key)
+		gotKey := kv.Key.(*prefixes.TouchedOrDeletedClaimKey).PackKey()
+
+		keyPartial1 := prefixes.TouchedOrDeletedClaimKeyPackPartial(kv.Key.(*prefixes.TouchedOrDeletedClaimKey), 1)
+
+		// Check pack partial for sanity
+		if !bytes.HasPrefix(gotKey, keyPartial1) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial1, gotKey)
+		}
+
+		got := kv.Value.(*prefixes.TouchedOrDeletedClaimValue).PackValue()
+		wantKey, err := hex.DecodeString(records[i][0])
+		if err != nil {
+			log.Println(err)
+		}
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(gotKey, wantKey) {
+			t.Errorf("gotKey: %+v, wantKey: %+v\n", got, want)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+
+	// Test start / stop
+	start, err := hex.DecodeString(records[0][0])
+	if err != nil {
+		log.Println(err)
+	}
+	stop, err := hex.DecodeString(records[9][0])
+	if err != nil {
+		log.Println(err)
+	}
+	options2 := dbpkg.NewIterateOptions().WithStart(start).WithStop(stop).WithIncludeValue(true)
+	ch2 := dbpkg.Iter(db, options2)
+	i = 0
+	for kv := range ch2 {
+		log.Println(kv.Key)
+		got := kv.Value.(*prefixes.TouchedOrDeletedClaimValue).PackValue()
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+}
+
+func TestUTXO(t *testing.T) {
+
+	filePath := "../../resources/utxo.csv"
+
+	log.Println(filePath)
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Println(err)
+	}
+	reader := csv.NewReader(file)
+	records, err := reader.ReadAll()
+	if err != nil {
+		log.Println(err)
+	}
+
+	wOpts := grocksdb.NewDefaultWriteOptions()
+	opts := grocksdb.NewDefaultOptions()
+	opts.SetCreateIfMissing(true)
+	db, err := grocksdb.OpenDb(opts, "tmp")
+	if err != nil {
+		log.Println(err)
+	}
+	defer func() {
+		db.Close()
+		err = os.RemoveAll("./tmp")
+		if err != nil {
+			log.Println(err)
+		}
+	}()
+	for _, record := range records {
+		key, err := hex.DecodeString(record[0])
+		if err != nil {
+			log.Println(err)
+		}
+		val, err := hex.DecodeString(record[1])
+		if err != nil {
+			log.Println(err)
+		}
+		db.Put(wOpts, key, val)
+	}
+	// test prefix
+	options := dbpkg.NewIterateOptions().WithPrefix([]byte{prefixes.UTXO}).WithIncludeValue(true)
+	ch := dbpkg.Iter(db, options)
+	var i = 0
+	for kv := range ch {
+		log.Println(kv.Key)
+		got := kv.Value.(*prefixes.UTXOValue).PackValue()
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+
+	// Test start / stop
+	start, err := hex.DecodeString(records[0][0])
+	if err != nil {
+		log.Println(err)
+	}
+	stop, err := hex.DecodeString(records[9][0])
+	if err != nil {
+		log.Println(err)
+	}
+	options2 := dbpkg.NewIterateOptions().WithStart(start).WithStop(stop).WithIncludeValue(true)
+	ch2 := dbpkg.Iter(db, options2)
+	i = 0
+	for kv := range ch2 {
+		log.Println(kv.Key)
+		got := kv.Value.(*prefixes.UTXOValue).PackValue()
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+}
+
+func TestHashXUTXO(t *testing.T) {
+
+	tests := []struct {
+		name     string
+		filePath string
+	}{
+		{
+			name:     "Read HashX_UTXO correctly",
+			filePath: "../../resources/hashx_utxo.csv",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			log.Println(tt.filePath)
+			file, err := os.Open(tt.filePath)
+			if err != nil {
+				log.Println(err)
+			}
+			reader := csv.NewReader(file)
+			records, err := reader.ReadAll()
+			if err != nil {
+				log.Println(err)
+			}
+
+			wOpts := grocksdb.NewDefaultWriteOptions()
+			opts := grocksdb.NewDefaultOptions()
+			opts.SetCreateIfMissing(true)
+			db, err := grocksdb.OpenDb(opts, "tmp")
+			if err != nil {
+				log.Println(err)
+			}
+			defer func() {
+				db.Close()
+				err = os.RemoveAll("./tmp")
+				if err != nil {
+					log.Println(err)
+				}
+			}()
+			for _, record := range records {
+				key, err := hex.DecodeString(record[0])
+				if err != nil {
+					log.Println(err)
+				}
+				val, err := hex.DecodeString(record[1])
+				if err != nil {
+					log.Println(err)
+				}
+				db.Put(wOpts, key, val)
+			}
+			start, err := hex.DecodeString(records[0][0])
+			if err != nil {
+				log.Println(err)
+			}
+			options := dbpkg.NewIterateOptions().WithPrefix([]byte{prefixes.HashXUTXO}).WithStart(start).WithIncludeValue(true)
+			ch := dbpkg.Iter(db, options)
+			var i = 0
+			for kv := range ch {
+				log.Println(kv.Key)
+				got := kv.Value.(*prefixes.HashXUTXOValue).PackValue()
+				want, err := hex.DecodeString(records[i][1])
+				if err != nil {
+					log.Println(err)
+				}
+				if !bytes.Equal(got, want) {
+					t.Errorf("got: %+v, want: %+v\n", got, want)
+				}
+				i++
+				if i > 9 {
+					return
+				}
+			}
+		})
+	}
+}
+
+func TestUTXOKey_String(t *testing.T) {
+	tests := []struct {
+		name   string
+		prefix []byte
+		hashx  []byte
+		txnum  uint32
+		nout   uint16
+		want   string
+	}{
+		{
+			name:   "Converts to string",
+			prefix: []byte("u"),
+			hashx:  []byte("AAAAAAAAAA"),
+			txnum:  0,
+			nout:   0,
+			want:   "*prefixes.UTXOKey(hashX=41414141414141414141, tx_num=0, nout=0)",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			key := &prefixes.UTXOKey{
+				Prefix: tt.prefix,
+				HashX:  tt.hashx,
+				TxNum:  tt.txnum,
+				Nout:   tt.nout,
+			}
+
+			got := fmt.Sprint(key)
+			log.Println(got)
+			if got != tt.want {
+				t.Errorf("got: %s, want: %s\n", got, tt.want)
+			}
+		})
+	}
+}

resources/reposted_claim.csv

@@ -0,0 +1,10 @@
+5700003eb3f3f17af2cf79b286dc1952f6c3df2e1d03947d150000,4dd814e8ae0fc8feead86bf6c723bcc45b224c44
+570000997ae50674ed318475cb207bf1902e01de7b02d931f70000,70e7073d180053a3e8815116e68466b8a9819eaa
+570000997ae50674ed318475cb207bf1902e01de7b031b5d5b0000,1d89ae62063d38c9ad5833721af2a2a8670a60ff
+5700009c47ca0687ea07155efc2a6ba803180066f1029e8f850000,028adb1480ac50803d11ebd97d54a21b8a7b7839
+5700009d1409ca5962d3d2c8f638cd75a312af03c4015f8a440000,ca28a84248c434bb6f2d6484cae2fbd8f841362b
+570000bcdff7762b712ac3a74634a0b27bcdd6b7e400c721410000,033c9374b2dd89eb357769ff234742c7d9e91ee4
+570000cda50bcdc44f55045c8c0ce4ba094a17ef6d012a443d0000,0a23389dfba22c2a955e7283e0a23c44590c429a
+570001034f15a28f221d469e42edc38b48a244cabd0329f5a60000,b30442f45c7c0dd4595e492cf02529c5fc6c58ac
+57000115df1d87a9346c1402dfba75fe04c4a66e36032e99280000,b13a360dda378ed53c5a502a0769cd841b85ea60
+570001205a75aeb993d1e47d370c40301b1c77a2f60249e1fa0000,7e243aee3dbefe46c285dadd354dea427cc167e3