Test funding peg-in psbt

Author: achow101

test/functional/feature_fedpeg.py

@@ -317,6 +317,13 @@ def run_test(self):
         fin_psbt = sidechain.finalizepsbt(signed_psbt['psbt'])
         assert_equal(fin_psbt, signed_pegin)
 
+        # Try funding a psbt with the peg-in
+        outputs.append({sidechain.getnewaddress(): 49.999})
+        pegin_psbt = sidechain.walletcreatefundedpsbt([{"txid":txid1, "vout": vout, "pegin_bitcoin_tx": raw, "pegin_txout_proof": proof, "pegin_claim_script": addrs["claim_script"]}], outputs)
+        signed_psbt = sidechain.walletsignpsbt(pegin_psbt['psbt'])
+        fin_psbt = sidechain.finalizepsbt(signed_psbt['psbt'])
+        assert fin_psbt['complete']
+
         sample_pegin_struct = FromHex(CTransaction(), signed_pegin["hex"])
         # Round-trip peg-in transaction using python serialization
         assert_equal(signed_pegin["hex"], bytes_to_hex_str(sample_pegin_struct.serialize()))