feat(conway): Added CBOR round trip test for conway transaction (#1198)

Signed-off-by: Akhil Repala <[email protected]>

Author: arepala-uml

ledger/conway/conway_test.go

@@ -15,9 +15,13 @@
 package conway
 
 import (
+	"bytes"
+	"encoding/hex"
 	"reflect"
+	"strings"
 	"testing"
 
+	"github.com/blinklabs-io/gouroboros/cbor"
 	"github.com/blinklabs-io/gouroboros/ledger/common"
 )
 
@@ -114,3 +118,76 @@ func TestConwayRedeemersIter(t *testing.T) {
 		iterIdx++
 	}
 }
+
+// Transaction taken from https://cexplorer.io/tx/6e6e15e39da0b8283b6c6d10b88b29adcac12e67edcf502c84cd2adb38a68880
+// HASH: 6e6e15e39da0b8283b6c6d10b88b29adcac12e67edcf502c84cd2adb38a68880
+
+const conwayTxHex = `84a40081825820b267f34cbf10a995565482742f328537ba4ccc767ea3ec99d4a443b5c71ae70101018182584c82d818584283581c4473be071285b7c1ac840cfaef878d95e078bf67fb859d587d488128a101581e581c5981b261ab5ccd11065b4b22cb3d6ba5938430480014d42742714dfb001a103e5cad1a0afcf06d021a00028ab9031a0b532b80a10081825820ca3554458c006d1ef04f33c13688b06c032d7c80adaf2967a01f1159c8058c65584016ce288ac2aca9ec373f3f84fd3a37c762e0ab244f68b2fd1c59525f24bbd5afc82ccbc67fa3eeeaaa7df2e212eae795b48e7803e6c7ec49b6b14bde6b84550af5f6`
+
+func TestConwayTx_CborRoundTrip_UsingCborEncode(t *testing.T) {
+	txHex := strings.TrimSpace(conwayTxHex)
+	orig, err := hex.DecodeString(txHex)
+	if err != nil {
+		t.Fatalf("failed to decode Conway tx hex into CBOR bytes: %v", err)
+	}
+
+	var tx ConwayTransaction
+	if err := tx.UnmarshalCBOR(orig); err != nil {
+		t.Fatalf("failed to unmarshal CBOR into ConwayTransaction: %v", err)
+	}
+
+	enc, err := cbor.Encode(tx)
+	if err != nil {
+		t.Fatalf("failed to encode ConwayTransaction via cbor.Encode: %v", err)
+	}
+	if len(enc) == 0 {
+		t.Fatal("encoded tx CBOR is empty")
+	}
+
+	if !bytes.Equal(orig, enc) {
+		t.Errorf("CBOR round-trip mismatch\noriginal: %x\nencoded : %x", orig, enc)
+
+		i := -1
+		for j := 0; j < len(orig) && j < len(enc); j++ {
+			if orig[j] != enc[j] {
+				i = j
+				break
+			}
+		}
+		if i != -1 {
+			t.Logf("first diff at byte %d: orig=0x%02x enc=0x%02x", i, orig[i], enc[i])
+		} else {
+			t.Logf("length mismatch: orig=%d enc=%d", len(orig), len(enc))
+		}
+	}
+}
+
+func TestConwayTx_Utxorpc(t *testing.T) {
+	txHex := strings.TrimSpace(conwayTxHex)
+	txBytes, err := hex.DecodeString(txHex)
+	if err != nil {
+		t.Fatalf("failed to decode Conway tx hex: %v", err)
+	}
+
+	tx, err := NewConwayTransactionFromCbor(txBytes)
+	if err != nil {
+		t.Fatalf("failed to parse Conway tx: %v", err)
+	}
+
+	utxoTx, err := tx.Utxorpc()
+	if err != nil {
+		t.Fatalf("failed to convert Conway tx to utxorpc: %v", err)
+	}
+
+	expHash := tx.Hash().Bytes()
+	if !bytes.Equal(utxoTx.Hash, expHash) {
+		t.Errorf("tx hash mismatch\nexpected: %x\nactual  : %x", expHash, utxoTx.Hash)
+	}
+
+	if got, want := len(utxoTx.Inputs), len(tx.Inputs()); got != want {
+		t.Errorf("inputs count mismatch: got %d want %d", got, want)
+	}
+	if got, want := len(utxoTx.Outputs), len(tx.Outputs()); got != want {
+		t.Errorf("outputs count mismatch: got %d want %d", got, want)
+	}
+}