fixed address normalizatoin

api/gateway/chain/storage/model/transfer_test.go

@@ -0,0 +1,50 @@
+package model
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestTransferNormalizePreservesBase58ExternalAddress(t *testing.T) {
+	address := "TGBDXEg9rxSqGFJDcb889zqTjDwx1bmLRF"
+	transfer := &Transfer{
+		IdempotencyKey:  "idemp",
+		TransferRef:     "ref",
+		OrganizationRef: "org",
+		SourceWalletRef: "wallet",
+		Network:         "tron_mainnet",
+		TokenSymbol:     "USDT",
+		Destination: TransferDestination{
+			ExternalAddress:         address,
+			ExternalAddressOriginal: address,
+		},
+	}
+
+	transfer.Normalize()
+
+	if transfer.Destination.ExternalAddress != address {
+		t.Fatalf("expected external address to preserve case, got %q", transfer.Destination.ExternalAddress)
+	}
+	if transfer.Destination.ExternalAddressOriginal != address {
+		t.Fatalf("expected external address original to preserve case, got %q", transfer.Destination.ExternalAddressOriginal)
+	}
+}
+
+func TestTransferNormalizeLowercasesHexExternalAddress(t *testing.T) {
+	address := "0xAABBCCDDEEFF00112233445566778899AABBCCDD"
+	transfer := &Transfer{
+		Destination: TransferDestination{
+			ExternalAddress:         address,
+			ExternalAddressOriginal: address,
+		},
+	}
+
+	transfer.Normalize()
+
+	if transfer.Destination.ExternalAddress != strings.ToLower(address) {
+		t.Fatalf("expected hex external address to be lowercased, got %q", transfer.Destination.ExternalAddress)
+	}
+	if transfer.Destination.ExternalAddressOriginal != address {
+		t.Fatalf("expected external address original to preserve case, got %q", transfer.Destination.ExternalAddressOriginal)
+	}
+}