Merge pull request ElementsProject#1372 from delta1/issues-1371

decodepsbt: add asset/assetcommitment to input.witness_utxo

Author: delta1

src/rpc/rawtransaction.cpp

@@ -1475,6 +1475,11 @@ static RPCHelpMan decodepsbt()
             } else {
                 out.pushKV("amountcommitment", txout.nValue.GetHex());
             }
+            if (txout.nAsset.IsExplicit()) {
+                out.pushKV("asset", txout.nAsset.GetAsset().GetHex());
+            } else {
+                out.pushKV("assetcommitment", txout.nAsset.GetHex());
+            }
             out.pushKV("scriptPubKey", o);
 
             in.pushKV("witness_utxo", out);

test/functional/rpc_psbt.py

@@ -257,6 +257,10 @@ def run_basic_tests(self, confidential):
         decoded = self.nodes[1].decodepsbt(walletsignpsbt_out['psbt'])
         assert 'non_witness_utxo' in decoded['inputs'][0]
         assert 'witness_utxo' in decoded['inputs'][0]
+        if 'asset' in decoded['inputs'][0]['witness_utxo']:
+            assert_equal(decoded['inputs'][0]['witness_utxo']['asset'], 'b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23')
+        else:
+            assert 'assetcommitment' in decoded['inputs'][0]['witness_utxo']
         # Check decodepsbt fee calculation (input values shall only be counted once per UTXO)
         #assert_equal(decoded['fee'], created_psbt['fee']) # ELEMENTS: we do not have this field. Should be fixed by #900
         assert_equal(walletsignpsbt_out['complete'], True)