Merge #15788: test: Unify testing setups for fuzz, bench, and unit tests

faf400077d scripted-diff: Bump copyright headers in test, bench (MarcoFalke)
fa821904bf scripted-diff: Rename test_bitcoin to test/setup_common (MarcoFalke)
fa8685d49e test: Use test_bitcoin setup in bench, Add test utils (MarcoFalke)
666696b673 test: Have segwit always active in (Basic)TestingSetup (MarcoFalke)

Pull request description:

  Now that the fuzz tests can use the BasicTestingSetup [1], do the same for bench.

  Also move some duplicate code to a common "test/util" module.

  [1]:  fuzz: Link BasicTestingSetup (shared with unit tests) #15504

ACKs for commit faf400:
  jonatack:
    ACK https://github.com/bitcoin/bitcoin/pull/15788/commits/faf400077d0144363c2dd24187431d958fb149a9

Tree-SHA512: 8ac5692e72cf50e460958f291643ae6b8bb04d5c1331ed50dce9eb4e9457e5a925144c532c42b360a26707e11eeece74aab27db8c76ab9a429b9dd7167e7cdc4

1 files changed, 90 insertions, 0 deletions

diff --git a/src/test/util.cpp b/src/test/util.cpp
new file mode 100644
index 0000000000..7c348c5b25
--- /dev/null
+++ b/src/test/util.cpp
@@ -0,0 +1,90 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <test/util.h>
+
+#include <chainparams.h>
+#include <consensus/merkle.h>
+#include <consensus/validation.h>
+#include <key_io.h>
+#include <miner.h>
+#include <outputtype.h>
+#include <pow.h>
+#include <scheduler.h>
+#include <script/standard.h>
+#include <txdb.h>
+#include <validation.h>
+#include <validationinterface.h>
+#ifdef ENABLE_WALLET
+#include <wallet/wallet.h>
+#endif
+
+#include <boost/thread.hpp>
+
+#ifdef ENABLE_WALLET
+std::string getnewaddress(CWallet& w)
+{
+    constexpr auto output_type = OutputType::BECH32;
+
+    CPubKey new_key;
+    if (!w.GetKeyFromPool(new_key)) assert(false);
+
+    w.LearnRelatedScripts(new_key, output_type);
+    const auto dest = GetDestinationForKey(new_key, output_type);
+
+    w.SetAddressBook(dest, /* label */ "", "receive");
+
+    return EncodeDestination(dest);
+}
+
+void importaddress(CWallet& wallet, const std::string& address)
+{
+    LOCK(wallet.cs_wallet);
+    const auto dest = DecodeDestination(address);
+    assert(IsValidDestination(dest));
+    const auto script = GetScriptForDestination(dest);
+    wallet.MarkDirty();
+    assert(!wallet.HaveWatchOnly(script));
+    if (!wallet.AddWatchOnly(script, 0 /* nCreateTime */)) assert(false);
+    wallet.SetAddressBook(dest, /* label */ "", "receive");
+}
+#endif // ENABLE_WALLET
+
+CTxIn generatetoaddress(const std::string& address)
+{
+    const auto dest = DecodeDestination(address);
+    assert(IsValidDestination(dest));
+    const auto coinbase_script = GetScriptForDestination(dest);
+
+    return MineBlock(coinbase_script);
+}
+
+CTxIn MineBlock(const CScript& coinbase_scriptPubKey)
+{
+    auto block = PrepareBlock(coinbase_scriptPubKey);
+
+    while (!CheckProofOfWork(block->GetHash(), block->nBits, Params().GetConsensus())) {
+        ++block->nNonce;
+        assert(block->nNonce);
+    }
+
+    bool processed{ProcessNewBlock(Params(), block, true, nullptr)};
+    assert(processed);
+
+    return CTxIn{block->vtx[0]->GetHash(), 0};
+}
+
+
+std::shared_ptr<CBlock> PrepareBlock(const CScript& coinbase_scriptPubKey)
+{
+    auto block = std::make_shared<CBlock>(
+        BlockAssembler{Params()}
+            .CreateNewBlock(coinbase_scriptPubKey)
+            ->block);
+
+    block->nTime = ::chainActive.Tip()->GetMedianTimePast() + 1;
+    block->hashMerkleRoot = BlockMerkleRoot(*block);
+
+    return block;
+}