Add String() method for Txid

Author: stringintech

kernel/txid.go

@@ -5,6 +5,7 @@ package kernel
 */
 import "C"
 import (
+	"encoding/hex"
 	"unsafe"
 )
 
@@ -60,3 +61,9 @@ func (t *txidApi) Bytes() [32]byte {
 	C.btck_txid_to_bytes(t.ptr, &output[0])
 	return *(*[32]byte)(unsafe.Pointer(&output[0]))
 }
+
+// String returns the txid as a hex string in display order (reversed).
+func (t *txidApi) String() string {
+	hashBytes := t.Bytes()
+	return hex.EncodeToString(ReverseBytes(hashBytes[:]))
+}

kernel/txid_test.go

@@ -39,4 +39,11 @@ func TestTxid(t *testing.T) {
 	if !txid.Equals(copiedTxid) {
 		t.Error("txid.Equals(copiedTxid) = false, want true")
 	}
+
+	// Test String()
+	expected := hex.EncodeToString(ReverseBytes(txidBytes[:]))
+	txidStr := txid.String()
+	if txidStr != expected {
+		t.Errorf("hash.String() = %s, want %s", txidStr, expected)
+	}
 }