Merge #19940: rpc: Return fee and vsize from testmempoolaccept

23c35bf0059bd6270218e0b732959e9c754f9812 [test] add get_vsize util for more programmatic testing (gzhao408)
2233a93a109b10b6fe0f5f26c2bb529c8de3dde7 [rpc] Return fee and vsize from testmempoolaccept (codeShark149)

Pull request description:

  From #19093 and resolves #19057.

  Difference from #19093: return `vsize` and `fees` object (similar to `getmempoolentry`) when the test accept is successful. Updates release-notes.md.

ACKs for top commit:
  jnewbery:
    utACK 23c35bf0059bd6270218e0b732959e9c754f9812
  fjahr:
    utACK 23c35bf
  instagibbs:
    reACK https://github.com/bitcoin/bitcoin/pull/19940/commits/23c35bf0059bd6270218e0b732959e9c754f9812

Tree-SHA512: dcb81b7b817a4684e9076bc5d427a6f2d549d2edc66544e718260c4b5f8f1d5ae1d47b754175e9f0c8a3bd8371ce116c2dca0583588d513a7d733d5d614f2b04

1 files changed, 10 insertions, 4 deletions

diff --git a/src/validation.cpp b/src/validation.cpp
index 6dd0e0ae45..0823c6b124 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -475,6 +475,7 @@ public:
          */
         std::vector<COutPoint>& m_coins_to_uncache;
         const bool m_test_accept;
+        CAmount* m_fee_out;
     };
 
     // Single transaction acceptance
@@ -687,6 +688,11 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
         return false; // state filled in by CheckTxInputs
     }
 
+    // If fee_out is passed, return the fee to the caller
+    if (args.m_fee_out) {
+        *args.m_fee_out = nFees;
+    }
+
     // Check for non-standard pay-to-script-hash in inputs
     if (fRequireStandard && !AreInputsStandard(tx, m_view)) {
         return state.Invalid(TxValidationResult::TX_INPUTS_NOT_STANDARD, "bad-txns-nonstandard-inputs");
@@ -1061,10 +1067,10 @@ bool MemPoolAccept::AcceptSingleTransaction(const CTransactionRef& ptx, ATMPArgs
 /** (try to) add transaction to memory pool with a specified acceptance time **/
 static bool AcceptToMemoryPoolWithTime(const CChainParams& chainparams, CTxMemPool& pool, TxValidationState &state, const CTransactionRef &tx,
                         int64_t nAcceptTime, std::list<CTransactionRef>* plTxnReplaced,
-                        bool bypass_limits, const CAmount nAbsurdFee, bool test_accept) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
+                        bool bypass_limits, const CAmount nAbsurdFee, bool test_accept, CAmount* fee_out=nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 {
     std::vector<COutPoint> coins_to_uncache;
-    MemPoolAccept::ATMPArgs args { chainparams, state, nAcceptTime, plTxnReplaced, bypass_limits, nAbsurdFee, coins_to_uncache, test_accept };
+    MemPoolAccept::ATMPArgs args { chainparams, state, nAcceptTime, plTxnReplaced, bypass_limits, nAbsurdFee, coins_to_uncache, test_accept, fee_out };
     bool res = MemPoolAccept(pool).AcceptSingleTransaction(tx, args);
     if (!res) {
         // Remove coins that were not present in the coins cache before calling ATMPW;
@@ -1083,10 +1089,10 @@ static bool AcceptToMemoryPoolWithTime(const CChainParams& chainparams, CTxMemPo
 
 bool AcceptToMemoryPool(CTxMemPool& pool, TxValidationState &state, const CTransactionRef &tx,
                         std::list<CTransactionRef>* plTxnReplaced,
-                        bool bypass_limits, const CAmount nAbsurdFee, bool test_accept)
+                        bool bypass_limits, const CAmount nAbsurdFee, bool test_accept, CAmount* fee_out)
 {
     const CChainParams& chainparams = Params();
-    return AcceptToMemoryPoolWithTime(chainparams, pool, state, tx, GetTime(), plTxnReplaced, bypass_limits, nAbsurdFee, test_accept);
+    return AcceptToMemoryPoolWithTime(chainparams, pool, state, tx, GetTime(), plTxnReplaced, bypass_limits, nAbsurdFee, test_accept, fee_out);
 }
 
 CTransactionRef GetTransaction(const CBlockIndex* const block_index, const CTxMemPool* const mempool, const uint256& hash, const Consensus::Params& consensusParams, uint256& hashBlock)