Fixed too-long-mempool-chain handling of kevacoin.

src/wallet/wallet.cpp

@@ -3171,8 +3171,7 @@ bool CWallet::CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey, CCon
                 auto rejectReason = state.GetRejectReason();
                 LogPrintf("CommitTransaction(): Transaction cannot be broadcast immediately, %s\n", rejectReason);
                 // TODO: if we expect the failure to be long term or permanent, instead delete wtx from the wallet and return failure.
-                bool isRegTest = Params().NetworkIDString() == CBaseChainParams::REGTEST;
-                if (!isRegTest && rejectReason == "too-long-mempool-chain") {
+                if (wtx.tx->IsKevacoin() && rejectReason == "too-long-mempool-chain") {
                     LogPrintf("Abandon the too-long-mempool-chain Tx: %s \n", wtx.GetHash().ToString().c_str());
                     AbandonTransaction(wtx.GetHash());
                     return false;

test/functional/feature_keva.py

@@ -168,7 +168,8 @@ class KevaTest(BitcoinTestFramework):
                 key = secondPrefix + '|' + str(i)
                 value = '-value-' * 320 + '|' + str(i)
                 self.nodes[0].keva_put(namespaceId, key, value)
-        except JSONRPCException:
+        except JSONRPCException as e:
+            if str(e).find("too-long-mempool-chain") >= 0:
                 throwException = True
 
         assert(throwException)