[TX] return only unique addresses

types/v1/tx.go

@@ -212,12 +212,17 @@ func (t *Tx) GetAddresses() []string {
 	switch t.Metadata.(type) {
 	case *Transfer, *ContractCall:
 		if len(t.Inputs) > 0 || len(t.Outputs) > 0 {
+			uniqueAddresses := make(map[string]struct{})
 			for _, input := range t.Inputs {
-				addresses = append(addresses, input.Address)
+				uniqueAddresses[input.Address] = struct{}{}
 			}
 
 			for _, output := range t.Outputs {
-				addresses = append(addresses, output.Address)
+				uniqueAddresses[output.Address] = struct{}{}
+			}
+
+			for address := range uniqueAddresses {
+				addresses = append(addresses, address)
 			}
 
 			return addresses

types/v1/tx_test.go

@@ -179,6 +179,17 @@ func TestTx_GetAddresses(t *testing.T) {
 			},
 			expected: []string{},
 		},
+		{
+			name: "utxo",
+			tx: Tx{
+				From:     "from_utxo",
+				To:       "from_utxo",
+				Inputs:   []TxOutput{{Address: "from_utxo"}},
+				Outputs:  []TxOutput{{Address: "from_utxo"}, {Address: "to_utxo"}},
+				Metadata: &Transfer{},
+			},
+			expected: []string{"from_utxo", "to_utxo"},
+		},
 	}
 
 	for _, tc := range tests {