tests: Check that segwit inputs in psbt have both UTXO types

test/functional/rpc_psbt.py

@@ -157,6 +157,10 @@ class PSBTTest(BitcoinTestFramework):
         # spend single key from node 1
         rawtx = self.nodes[1].walletcreatefundedpsbt([{"txid":txid,"vout":p2wpkh_pos},{"txid":txid,"vout":p2sh_p2wpkh_pos},{"txid":txid,"vout":p2pkh_pos}], {self.nodes[1].getnewaddress():29.99})['psbt']
         walletprocesspsbt_out = self.nodes[1].walletprocesspsbt(rawtx)
+        # Make sure it has both types of UTXOs
+        decoded = self.nodes[1].decodepsbt(walletprocesspsbt_out['psbt'])
+        assert 'non_witness_utxo' in decoded['inputs'][0]
+        assert 'witness_utxo' in decoded['inputs'][0]
         assert_equal(walletprocesspsbt_out['complete'], True)
         self.nodes[1].sendrawtransaction(self.nodes[1].finalizepsbt(walletprocesspsbt_out['psbt'])['hex'])