Revert merge of pull #4845

It breaks the new mingw tests!

See

- https://travis-ci.org/bitcoin/bitcoin/jobs/36845581
- https://travis-ci.org/bitcoin/bitcoin/jobs/36845582

This reverts commit 470590277782cce2fe73275c74523aef59a51eab, 5e2e7fcb99738d9254d4030d53e4f711b2fc5ee0, a25fd6be138ff2bff7e2ad6a1a789db523c0193f.

12 files changed, 4 insertions, 371 deletions

diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index d376961996..ab449f3e71 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -51,7 +51,6 @@ BITCOIN_TESTS =\
   test/key_tests.cpp \
   test/main_tests.cpp \
   test/miner_tests.cpp \
-  test/blockv2_tests.cpp \
   test/mruset_tests.cpp \
   test/multisig_tests.cpp \
   test/netbase_tests.cpp \
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 31c67715c8..179db5a818 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -115,7 +115,6 @@ public:
         fAllowMinDifficultyBlocks = false;
         fRequireStandard = true;
         fMineBlocksOnDemand = false;
-        fSkipProofOfWorkCheck = false;
     }
 };
 static CMainParams mainParams;
@@ -215,46 +214,8 @@ public:
 };
 static CRegTestParams regTestParams;
 
-//
-// Unit test
-//
-class CUnitTestParams : public CMainParams, public CModifiableParams {
-public:
-    CUnitTestParams() {
-        networkID = CBaseChainParams::UNITTEST;
-        strNetworkID = "unittest";
-        nDefaultPort = 18445;
-        vFixedSeeds.clear();
-        vSeeds.clear();  // Regtest mode doesn't have any DNS seeds.
-
-        fRequireRPCPassword = false;
-        fMiningRequiresPeers = false;
-        fDefaultCheckMemPool = true;
-        fAllowMinDifficultyBlocks = false;
-        fMineBlocksOnDemand = true;
-    }
-public:
-    // Published setters to allow changing values in unit test cases
-    virtual void setSubsidyHalvingInterval(int anSubsidyHalvingInterval)  { nSubsidyHalvingInterval=anSubsidyHalvingInterval; }
-    virtual void setEnforceBlockUpgradeMajority(int anEnforceBlockUpgradeMajority)  { nEnforceBlockUpgradeMajority=anEnforceBlockUpgradeMajority; }
-    virtual void setRejectBlockOutdatedMajority(int anRejectBlockOutdatedMajority)  { nRejectBlockOutdatedMajority=anRejectBlockOutdatedMajority; }
-    virtual void setToCheckBlockUpgradeMajority(int anToCheckBlockUpgradeMajority)  { nToCheckBlockUpgradeMajority=anToCheckBlockUpgradeMajority; }
-    virtual void setDefaultCheckMemPool(bool afDefaultCheckMemPool)  { fDefaultCheckMemPool=afDefaultCheckMemPool; }
-    virtual void setAllowMinDifficultyBlocks(bool afAllowMinDifficultyBlocks) {  fAllowMinDifficultyBlocks=afAllowMinDifficultyBlocks; }
-    virtual void setSkipProofOfWorkCheck(bool afSkipProofOfWorkCheck) { fSkipProofOfWorkCheck = afSkipProofOfWorkCheck; }
-};
-static CUnitTestParams unitTestParams;
-
-
 static CChainParams *pCurrentParams = 0;
 
-CModifiableParams *ModifiableParams()
-{
-   assert(pCurrentParams);
-   assert(pCurrentParams==&unitTestParams);
-   return (CModifiableParams*)&unitTestParams;
-}
-
 const CChainParams &Params() {
     assert(pCurrentParams);
     return *pCurrentParams;
@@ -268,8 +229,6 @@ CChainParams &Params(CBaseChainParams::Network network) {
             return testNetParams;
         case CBaseChainParams::REGTEST:
             return regTestParams;
-        case CBaseChainParams::UNITTEST:
-            return unitTestParams;
         default:
             assert(false && "Unimplemented network");
             return mainParams;
diff --git a/src/chainparams.h b/src/chainparams.h
index 50441a89f3..e5dfc87c6d 100644
--- a/src/chainparams.h
+++ b/src/chainparams.h
@@ -61,8 +61,6 @@ public:
     bool DefaultCheckMemPool() const { return fDefaultCheckMemPool; }
     /* Allow mining of a min-difficulty block */
     bool AllowMinDifficultyBlocks() const { return fAllowMinDifficultyBlocks; }
-    /* Skip proof-of-work check: allow mining of any difficulty block */
-    bool SkipProofOfWorkCheck() const { return fSkipProofOfWorkCheck; }
     /* Make standard checks */
     bool RequireStandard() const { return fRequireStandard; }
     int64_t TargetTimespan() const { return nTargetTimespan; }
@@ -105,27 +103,8 @@ protected:
     bool fAllowMinDifficultyBlocks;
     bool fRequireStandard;
     bool fMineBlocksOnDemand;
-    bool fSkipProofOfWorkCheck;
 };
 
-/** Modifiable parameters interface is used by test cases to adapt the parameters in order
-*** to test specific features more easily. Test cases should always restore the previous
-*** values after finalization.
-**/
-
-class CModifiableParams {
-public:
-    // Published setters to allow changing values in unit test cases
-    virtual void setSubsidyHalvingInterval(int anSubsidyHalvingInterval) =0;
-    virtual void setEnforceBlockUpgradeMajority(int anEnforceBlockUpgradeMajority)=0;
-    virtual void setRejectBlockOutdatedMajority(int anRejectBlockOutdatedMajority)=0;
-    virtual void setToCheckBlockUpgradeMajority(int anToCheckBlockUpgradeMajority)=0;
-    virtual void setDefaultCheckMemPool(bool aDefaultCheckMemPool)=0;
-    virtual void setAllowMinDifficultyBlocks(bool aAllowMinDifficultyBlocks)=0;
-    virtual void setSkipProofOfWorkCheck(bool aSkipProofOfWorkCheck)=0;
-};
-
-
 /**
  * Return the currently selected parameters. This won't change after app startup
  * outside of the unit tests.
@@ -135,9 +114,6 @@ const CChainParams &Params();
 /** Return parameters for the given network. */
 CChainParams &Params(CBaseChainParams::Network network);
 
-/** Get modifyable network parameters (UNITTEST only) */
-CModifiableParams *ModifiableParams();
-
 /** Sets the params returned by Params() to those for the given network. */
 void SelectParams(CBaseChainParams::Network network);
 
diff --git a/src/chainparamsbase.cpp b/src/chainparamsbase.cpp
index e9d63197bd..98bb5b855f 100644
--- a/src/chainparamsbase.cpp
+++ b/src/chainparamsbase.cpp
@@ -57,20 +57,6 @@ public:
 };
 static CBaseRegTestParams regTestParams;
 
-//
-// Unit test
-//
-class CBaseUnitTestParams : public CBaseMainParams
-{
-public:
-    CBaseUnitTestParams()
-    {
-        networkID = CBaseChainParams::UNITTEST;
-        strDataDir = "unittest";
-    }
-};
-static CBaseUnitTestParams unitTestParams;
-
 static CBaseChainParams* pCurrentBaseParams = 0;
 
 const CBaseChainParams& BaseParams()
@@ -91,9 +77,6 @@ void SelectBaseParams(CBaseChainParams::Network network)
     case CBaseChainParams::REGTEST:
         pCurrentBaseParams = &regTestParams;
         break;
-    case CBaseChainParams::UNITTEST:
-        pCurrentBaseParams = &unitTestParams;
-        break;
     default:
         assert(false && "Unimplemented network");
         return;
diff --git a/src/chainparamsbase.h b/src/chainparamsbase.h
index cc154cf501..c054f03f17 100644
--- a/src/chainparamsbase.h
+++ b/src/chainparamsbase.h
@@ -19,7 +19,6 @@ public:
         MAIN,
         TESTNET,
         REGTEST,
-        UNITTEST,
 
         MAX_NETWORK_TYPES
     };
diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index 9a6bc05e63..c41deea7ce 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -88,8 +88,6 @@ namespace Checkpoints {
             return dataTestnet;
         else if (Params().NetworkID() == CBaseChainParams::MAIN)
             return data;
-        else if (Params().NetworkID() == CBaseChainParams::UNITTEST) // UnitTest share the same checkpoints as MAIN
-            return data;
         else
             return dataRegtest;
     }
diff --git a/src/main.cpp b/src/main.cpp
index 55485c86ff..a3e36ff872 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2305,8 +2305,7 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
         nHeight = pindexPrev->nHeight+1;
 
         // Check proof of work
-        if ((!Params().SkipProofOfWorkCheck()) &&
-           (block.nBits != GetNextWorkRequired(pindexPrev, &block)))
+        if (block.nBits != GetNextWorkRequired(pindexPrev, &block))
             return state.DoS(100, error("AcceptBlock() : incorrect proof of work"),
                              REJECT_INVALID, "bad-diffbits");
 
diff --git a/src/pow.cpp b/src/pow.cpp
index d50222849c..893f6c18be 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -81,10 +81,6 @@ bool CheckProofOfWork(uint256 hash, unsigned int nBits)
     bool fNegative;
     bool fOverflow;
     uint256 bnTarget;
-
-    if (Params().SkipProofOfWorkCheck())
-       return true;
-
     bnTarget.SetCompact(nBits, &fNegative, &fOverflow);
 
     // Check range
diff --git a/src/test/base58_tests.cpp b/src/test/base58_tests.cpp
index c298c805da..58fffb6df4 100644
--- a/src/test/base58_tests.cpp
+++ b/src/test/base58_tests.cpp
@@ -175,7 +175,7 @@ BOOST_AUTO_TEST_CASE(base58_keys_valid_parse)
             BOOST_CHECK_MESSAGE(!secret.IsValid(), "IsValid pubkey as privkey:" + strTest);
         }
     }
-    SelectParams(CBaseChainParams::UNITTEST);
+    SelectParams(CBaseChainParams::MAIN);
 }
 
 // Goal: check that generated keys match test vectors
@@ -243,7 +243,7 @@ BOOST_AUTO_TEST_CASE(base58_keys_valid_gen)
     CTxDestination nodest = CNoDestination();
     BOOST_CHECK(!dummyAddr.Set(nodest));
 
-    SelectParams(CBaseChainParams::UNITTEST);
+    SelectParams(CBaseChainParams::MAIN);
 }
 
 // Goal: check that base58 parsing code is robust against a variety of corrupted data
diff --git a/src/test/blockv2_tests.cpp b/src/test/blockv2_tests.cpp
deleted file mode 100644
index 96c0df5e6b..0000000000
--- a/src/test/blockv2_tests.cpp
+++ /dev/null
@@ -1,275 +0,0 @@
-// Copyright (c) 2011-2014 The Bitcoin Core developers
-// Distributed under the MIT/X11 software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include "main.h"
-#include "miner.h"
-#include "uint256.h"
-#include "util.h"
-
-#include <boost/test/unit_test.hpp>
-
-// This test cheecks the majority rule which states that after 1000 v2 blocks no new v1 block can be part of that branch.
-
-BOOST_AUTO_TEST_SUITE(blockv2_tests)
-
-static CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
-
-static void SetEmptyBlock(CBlock * pblock)
-{
-    pblock->nVersion = 2;
-    pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
-    pblock->nNonce = 0;
-}
-
-static void SetBlockDefaultAttributesAndHeight(CBlock * pblock,bool addHeight,int heightDifference)
-{
-    SetEmptyBlock(pblock);
-
-    // Add the coinbase
-    CMutableTransaction txCoinbase(pblock->vtx[0]);
-
-    if (addHeight)
-        txCoinbase.vin[0].scriptSig = (CScript() << (chainActive.Height()+1+heightDifference) << 0);
-        else
-        txCoinbase.vin[0].scriptSig = (CScript() << heightDifference << 0); // At least size 2, this is a protocol spec
-
-    txCoinbase.vout[0].scriptPubKey = CScript();
-    pblock->vtx[0] = CTransaction(txCoinbase);
-    pblock->hashMerkleRoot = pblock->BuildMerkleTree();
-}
-
-void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock)
-{
-    if ((chainActive.Height()+1) % Params().SubsidyHalvingInterval() == 0)
-        {
-            // The RegTest network has a low subsidy halving interval (150) so
-            // we must recompute the coinbase subsidy if we reach the boundary.
-            // The unittest network allows modifying this interval. We check it so this
-            // test can work in any network.
-
-            // preserve parent hash
-            uint256 prevParent = pblock->hashPrevBlock;
-            delete pblocktemplate;
-            pblocktemplate = CreateNewBlock(scriptPubKey);
-            pblock = &pblocktemplate->block; // pointer for convenience
-            pblock->hashPrevBlock = prevParent;
-        }
-}
-
-void CheckBlockAddedToBestChainSuccessfully(CBlock *pblock)
-{
-    int PreviousHeight;
-    CValidationState state;
-
-    PreviousHeight = chainActive.Height();
-    BOOST_CHECK(ProcessBlock(state, NULL, pblock));
-    BOOST_CHECK(state.IsValid());
-    BOOST_CHECK((PreviousHeight+1) == chainActive.Height()); // to differentiate from orphan blocks, which also get accepted in ProcessBlock()
-
-    // Previous checks do not assure the current best chain has pblock as tip. It could be the case that a because
-    // of a malfunction in the chain reorganization code, a reorganization causes an increase of the chain length, but with another tip.
-    // So we also check that.
-    BOOST_CHECK(chainActive.Tip()->GetBlockHash()==pblock->GetHash());
-}
-
-void Blockv2test()
-{
-    assert(Params().NetworkID() == CBaseChainParams::UNITTEST);
-    ModifiableParams()->setSkipProofOfWorkCheck(true);
-
-    // We don't know the state of the block-chain here: it depends on which other tests are run before this test.
-    // See https://github.com/bitcoin/bitcoin/pull/4688 for a patch that allows the re-creation of the block-chain
-    // for each testcase that requires it.
-
-    // If miner_tests.cpp is run before, the chain will be 100 blocks long, and all of them will be v1
-
-
-    LogPrintf("Blockv2test testcase starts\n");
-
-    CBlockTemplate *pblocktemplate;
-    CScript script;
-    uint256 hash;
-    int PreviousHeight;
-
-    LOCK(cs_main);
-
-    // Simple block creation, nothing special yet.
-    pblocktemplate = CreateNewBlock(scriptPubKey);
-    CBlock *pblock = &pblocktemplate->block; // pointer for convenience
-
-    LogPrintf("Blockv2test block v1 add begin\n");
-
-    ////////////////////////////////////////////////////////////////////////////////////////
-    // First create a block v1, check that it is accepted. The block has an invalid height.
-    ////////////////////////////////////////////////////////////////////////////////////////
-    SetBlockDefaultAttributesAndHeight(pblock,false,5000);
-    pblock->nVersion = 1;
-    CValidationState state1;
-    PreviousHeight = chainActive.Height();
-    BOOST_CHECK(ProcessBlock(state1, NULL, pblock));
-    BOOST_CHECK(state1.IsValid());
-    BOOST_CHECK((PreviousHeight+1) == chainActive.Height()); // to differentiate from orphan blocks, which also get accepted in ProcessBlock()
-    pblock->hashPrevBlock = pblock->GetHash(); // update parent
-
-
-
-    // First check that the supermajority threshold is exactly 1000 blocks
-    BOOST_CHECK(Params().ToCheckBlockUpgradeMajority()==1000);  //
-    BOOST_CHECK(Params().EnforceBlockUpgradeMajority()==750);
-    BOOST_CHECK(Params().RejectBlockOutdatedMajority()==950);
-
-    // Over the last 1000 blocks, 750 blocks must be v2 to switch to v2-only mode.
-    // Here we're testing only the last 750, not any subset.
-
-    LogPrintf("Blockv2test BIP30 repetition begin\n");
-
-    ///////////////////////////////////////////////////////////////////////////////////////////////////////
-    // First, if we try to add a block v2 with the same coinbase tx, we should get
-    // "bad-txns-BIP30" because the coinbase tx has the same hash as the previous.
-    // Even if ConnectBlock returns a "bad-txns-BIP30", ActivateBestChainStep clears
-    // the state, so we get true here and the "bad-txns-BIP30" reason is lost. But this
-    // is the intended behaviour: Receiving a single block can cause zero or multiple blocks to be
-    // connected, and ActivateBestChain's responsibility is just switching the best block whatsoever.
-    // Feedback about failures causes a reject message to be sent to the peer from which we received
-    // the actual block (not necessarily the same as from whom we got the block that caused the reorg),
-    // for which we remember the peerid.
-    // Because we cannot access the failure reason here, we just verify instead that the chain
-    // height has not been incremented.
-    //////////////////////////////////////////////////////////////////////////////////////////////////////
-
-    CValidationState state7;
-    PreviousHeight = chainActive.Height();
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetBlockDefaultAttributesAndHeight(pblock,false,5000); //
-    pblock->nVersion = 2;
-    BOOST_CHECK(ProcessBlock(state7, NULL, pblock)); // should we care about the return value?
-    BOOST_CHECK(state7.IsValid());
-    BOOST_CHECK(PreviousHeight == chainActive.Height()); // we check the block has not been added.
-
-    LogPrintf("Blockv2test 750 v2 blocks  begin\n");
-
-    ////////////////////////////
-    // Now create 750 v2 blocks
-    ////////////////////////////
-
-    for (int i=0;i<750;i++)
-    {
-
-        LogPrintf("Blockv2test block %d begin\n",i);
-
-        CheckSubsidyHalving(pblocktemplate,pblock);
-
-        // We add a value to the height to make is NOT equal to the actual height.
-        SetBlockDefaultAttributesAndHeight(pblock,true,1000); // blocks version 2 without height are allowed! for only 750 blocks
-        pblock->nVersion = 2;
-
-        CheckBlockAddedToBestChainSuccessfully(pblock);
-        pblock->hashPrevBlock = pblock->GetHash(); // update parent
-    }
-
-    LogPrintf("Blockv2test v2 without height rejected begin\n");
-
-    /////////////////////////////////////////////////////////////////////////////////////
-    // Now we try to add a block v2, with an invalid height and it should be rejected.
-    // We use 2000 as argument heightDifference because is not in the range [1000..1750].
-    /////////////////////////////////////////////////////////////////////////////////////
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetBlockDefaultAttributesAndHeight(pblock,true,2000); //
-    pblock->nVersion = 2;
-    CValidationState state0;
-    BOOST_CHECK(ProcessBlock(state0, NULL, pblock)==false);
-    BOOST_CHECK(!state0.IsValid());
-    BOOST_CHECK(state0.GetRejectReason()=="bad-cb-height");
-    // Do not update parent since block has failed
-
-    LogPrintf("Blockv2test v2 with height accepted begin\n");
-
-    /////////////////////////////////////////////////////////////
-    // Now we add 200 additional blocks, until we get 950
-    // (the threshold where v1 blocks are not accepted anymore)
-    /////////////////////////////////////////////////////////////
-    for (int i=0;i<200;i++)
-    {
-
-        LogPrintf("Blockv2test v2block %d begin\n",i);
-        CheckSubsidyHalving(pblocktemplate,pblock);
-        SetBlockDefaultAttributesAndHeight(pblock,true,0);
-        pblock->nVersion = 2;
-        CheckBlockAddedToBestChainSuccessfully(pblock);
-        pblock->hashPrevBlock = pblock->GetHash(); // update parent
-    }
-
-
-    LogPrintf("Blockv2test block v1 rejected\n");
-
-    /////////////////////////////////////////////////////////////////////////////////////////
-    // Now we try to add a block v1, it should be rejected, even if it hash the height field
-    /////////////////////////////////////////////////////////////////////////////////////////
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetBlockDefaultAttributesAndHeight(pblock,true,0);
-    pblock->nVersion = 1;
-    CValidationState state2;
-    BOOST_CHECK(ProcessBlock(state2, NULL, pblock)==false);
-    BOOST_CHECK(!state2.IsValid());
-    BOOST_CHECK(state2.GetRejectReason()=="bad-version");
-    // Do not update parent since block has failed
-
-    ////////////////////////////////////////////////////////
-    // Block time too old check
-    ////////////////////////////////////////////////////////
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetBlockDefaultAttributesAndHeight(pblock,true,0);
-    pblock->nVersion = 2;
-    pblock->nTime = chainActive.Tip()->GetMedianTimePast()-1;
-    CValidationState state4;
-    BOOST_CHECK(ProcessBlock(state4, NULL, pblock)==false);
-    BOOST_CHECK(!state4.IsValid());
-    BOOST_CHECK(state4.GetRejectReason()=="time-too-old");
-    // Do not update parent since block has failed
-
-    ////////////////////////////////////////////////////////
-    // Adding a non-final coinbase, must modify coinbase
-    ////////////////////////////////////////////////////////
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetEmptyBlock(pblock);
-    // Use a mutable coinbase to change nLockTime and  nSequence
-    CMutableTransaction txCoinbase(pblock->vtx[0]);
-    txCoinbase.vin[0].scriptSig = (CScript() << chainActive.Height() << 0);
-    txCoinbase.nLockTime = LOCKTIME_THRESHOLD-1; // refers to height
-    txCoinbase.vin[0].nSequence = 1; // non-zero sequence
-    pblock->vtx[0] = CTransaction(txCoinbase);
-    pblock->nVersion = 2;
-    pblock->hashMerkleRoot = pblock->BuildMerkleTree();
-    CValidationState state5;
-    BOOST_CHECK(ProcessBlock(state5, NULL, pblock)==false);
-    BOOST_CHECK(!state5.IsValid());
-    BOOST_CHECK(state5.GetRejectReason()=="bad-txns-nonfinal");
-    // Do not update parent since block has failed
-
-    ModifiableParams()->setSkipProofOfWorkCheck(false);
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Just to be sure that proof-of-work skipping is working ok, we submit a block
-    // without enought proof of work and it must be rejected.
-    ////////////////////////////////////////////////////////////////////////////////
-    CheckSubsidyHalving(pblocktemplate,pblock);
-    SetBlockDefaultAttributesAndHeight(pblock,true,0);
-    pblock->nVersion = 2;
-    CValidationState state6;
-    BOOST_CHECK(ProcessBlock(state6, NULL, pblock)==false);
-    BOOST_CHECK(!state6.IsValid());
-    BOOST_CHECK(state6.GetRejectReason()=="high-hash");
-
-    delete pblocktemplate;
-
-
-    LogPrintf("Blockv2test testcase ends\n");
-}
-
-BOOST_AUTO_TEST_CASE(Blockv2testcase)
-{
-    Blockv2test();
-}
-
-BOOST_AUTO_TEST_SUITE_END()
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
index bad5c13ac2..9e4669eba9 100644
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -253,7 +253,6 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 
     chainActive.Tip()->nHeight--;
     SetMockTime(0);
-    mempool.clear();
 
     BOOST_FOREACH(CTransaction *tx, txFirst)
         delete tx;
diff --git a/src/test/test_bitcoin.cpp b/src/test/test_bitcoin.cpp
index 6e5f0e3fac..68fad8d038 100644
--- a/src/test/test_bitcoin.cpp
+++ b/src/test/test_bitcoin.cpp
@@ -31,7 +31,7 @@ struct TestingSetup {
 
     TestingSetup() {
         fPrintToDebugLog = false; // don't want to write to debug.log file
-        SelectParams(CBaseChainParams::UNITTEST);
+        SelectParams(CBaseChainParams::MAIN);
         noui_connect();
 #ifdef ENABLE_WALLET
         bitdb.MakeMock();