1 files changed, 85 insertions, 3 deletions

diff --git a/src/test/util/setup_common.cpp b/src/test/util/setup_common.cpp
index b9f3f8c955..1ffe435531 100644
--- a/src/test/util/setup_common.cpp
+++ b/src/test/util/setup_common.cpp
@@ -77,6 +77,7 @@ BasicTestingSetup::BasicTestingSetup(const std::string& chainName, const std::ve
         {
             "dummy",
             "-printtoconsole=0",
+            "-logsourcelocations",
             "-logtimemicros",
             "-logthreadnames",
             "-debug",
@@ -199,14 +200,43 @@ TestingSetup::TestingSetup(const std::string& chainName, const std::vector<const
     }
 }
 
-TestChain100Setup::TestChain100Setup()
+TestChain100Setup::TestChain100Setup(bool deterministic)
 {
+    m_deterministic = deterministic;
+
+    if (m_deterministic) {
+        SetMockTime(1598887952);
+        constexpr std::array<unsigned char, 32> vchKey = {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
+            }
+        };
+        coinbaseKey.Set(vchKey.begin(), vchKey.end(), false);
+    } else {
+        coinbaseKey.MakeNewKey(true);
+    }
+
     // Generate a 100-block chain:
-    coinbaseKey.MakeNewKey(true);
+    this->mineBlocks(COINBASE_MATURITY);
+
+    if (m_deterministic) {
+        LOCK(::cs_main);
+        assert(
+            m_node.chainman->ActiveChain().Tip()->GetBlockHash().ToString() ==
+            "49c95db1e470fed04496d801c9d8fbb78155d2c7f855232c918823d2c17d0cf6");
+    }
+}
+
+void TestChain100Setup::mineBlocks(int num_blocks)
+{
     CScript scriptPubKey = CScript() << ToByteVector(coinbaseKey.GetPubKey()) << OP_CHECKSIG;
-    for (int i = 0; i < COINBASE_MATURITY; i++) {
+    for (int i = 0; i < num_blocks; i++)
+    {
         std::vector<CMutableTransaction> noTxns;
         CBlock b = CreateAndProcessBlock(noTxns, scriptPubKey);
+        if (m_deterministic) {
+            SetMockTime(GetTime() + 1);
+        }
         m_coinbase_txns.push_back(b.vtx[0]);
     }
 }
@@ -231,9 +261,61 @@ CBlock TestChain100Setup::CreateAndProcessBlock(const std::vector<CMutableTransa
     return block;
 }
 
+
+CMutableTransaction TestChain100Setup::CreateValidMempoolTransaction(CTransactionRef input_transaction,
+                                                                     int input_vout,
+                                                                     int input_height,
+                                                                     CKey input_signing_key,
+                                                                     CScript output_destination,
+                                                                     CAmount output_amount)
+{
+    // Transaction we will submit to the mempool
+    CMutableTransaction mempool_txn;
+
+    // Create an input
+    COutPoint outpoint_to_spend(input_transaction->GetHash(), input_vout);
+    CTxIn input(outpoint_to_spend);
+    mempool_txn.vin.push_back(input);
+
+    // Create an output
+    CTxOut output(output_amount, output_destination);
+    mempool_txn.vout.push_back(output);
+
+    // Sign the transaction
+    // - Add the signing key to a keystore
+    FillableSigningProvider keystore;
+    keystore.AddKey(input_signing_key);
+    // - Populate a CoinsViewCache with the unspent output
+    CCoinsView coins_view;
+    CCoinsViewCache coins_cache(&coins_view);
+    AddCoins(coins_cache, *input_transaction.get(), input_height);
+    // - Use GetCoin to properly populate utxo_to_spend,
+    Coin utxo_to_spend;
+    assert(coins_cache.GetCoin(outpoint_to_spend, utxo_to_spend));
+    // - Then add it to a map to pass in to SignTransaction
+    std::map<COutPoint, Coin> input_coins;
+    input_coins.insert({outpoint_to_spend, utxo_to_spend});
+    // - Default signature hashing type
+    int nHashType = SIGHASH_ALL;
+    std::map<int, std::string> input_errors;
+    assert(SignTransaction(mempool_txn, &keystore, input_coins, nHashType, input_errors));
+
+    // Add transaction to the mempool
+    {
+        LOCK(cs_main);
+        const MempoolAcceptResult result = AcceptToMemoryPool(::ChainstateActive(), *m_node.mempool.get(), MakeTransactionRef(mempool_txn), /* bypass_limits */ false);
+        assert(result.m_result_type == MempoolAcceptResult::ResultType::VALID);
+    }
+
+    return mempool_txn;
+}
+
 TestChain100Setup::~TestChain100Setup()
 {
     gArgs.ForceSetArg("-segwitheight", "0");
+    if (m_deterministic) {
+        SetMockTime(0);
+    }
 }
 
 CTxMemPoolEntry TestMemPoolEntryHelper::FromTx(const CMutableTransaction& tx) const