test: Remove no longer needed MakeChain calls

These calls are no longer needed after edc316020e
from #19098 which started instantiating BasicTestingSetup.m_node.chain

Patch from MarcoFalke <falke.marco@gmail.com> in
https://github.com/bitcoin/bitcoin/pull/19425#discussion_r526701954

Co-authored-by: MarcoFalke <falke.marco@gmail.com>

src/test/interfaces_tests.cpp

@@ -17,7 +17,7 @@ BOOST_FIXTURE_TEST_SUITE(interfaces_tests, TestChain100Setup)
 
 BOOST_AUTO_TEST_CASE(findBlock)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
 
     uint256 hash;
@@ -61,7 +61,7 @@ BOOST_AUTO_TEST_CASE(findBlock)
 
 BOOST_AUTO_TEST_CASE(findFirstBlockWithTimeAndHeight)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
     uint256 hash;
     int height;
@@ -73,7 +73,7 @@ BOOST_AUTO_TEST_CASE(findFirstBlockWithTimeAndHeight)
 
 BOOST_AUTO_TEST_CASE(findAncestorByHeight)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
     uint256 hash;
     BOOST_CHECK(chain->findAncestorByHeight(active[20]->GetBlockHash(), 10, FoundBlock().hash(hash)));
@@ -83,7 +83,7 @@ BOOST_AUTO_TEST_CASE(findAncestorByHeight)
 
 BOOST_AUTO_TEST_CASE(findAncestorByHash)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
     int height = -1;
     BOOST_CHECK(chain->findAncestorByHash(active[20]->GetBlockHash(), active[10]->GetBlockHash(), FoundBlock().height(height)));
@@ -93,7 +93,7 @@ BOOST_AUTO_TEST_CASE(findAncestorByHash)
 
 BOOST_AUTO_TEST_CASE(findCommonAncestor)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
     auto* orig_tip = active.Tip();
     for (int i = 0; i < 10; ++i) {
@@ -123,7 +123,7 @@ BOOST_AUTO_TEST_CASE(findCommonAncestor)
 
 BOOST_AUTO_TEST_CASE(hasBlocks)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto& chain = m_node.chain;
     const CChain& active = Assert(m_node.chainman)->ActiveChain();
 
     // Test ranges

src/wallet/test/coinselector_tests.cpp

@@ -283,7 +283,7 @@ BOOST_AUTO_TEST_CASE(bnb_search_test)
     // Make sure that can use BnB when there are preset inputs
     empty_wallet();
     {
-        std::unique_ptr<CWallet> wallet = MakeUnique<CWallet>(m_chain.get(), "", CreateMockWalletDatabase());
+        std::unique_ptr<CWallet> wallet = MakeUnique<CWallet>(m_node.chain.get(), "", CreateMockWalletDatabase());
         bool firstRun;
         wallet->LoadWallet(firstRun);
         wallet->SetupLegacyScriptPubKeyMan();

src/wallet/test/init_test_fixture.cpp

@@ -10,7 +10,7 @@
 
 InitWalletDirTestingSetup::InitWalletDirTestingSetup(const std::string& chainName) : BasicTestingSetup(chainName)
 {
-    m_wallet_client = MakeWalletClient(*m_chain, *Assert(m_node.args));
+    m_wallet_client = MakeWalletClient(*m_node.chain, *Assert(m_node.args));
 
     std::string sep;
     sep += fs::path::preferred_separator;

src/wallet/test/init_test_fixture.h

@@ -19,7 +19,6 @@ struct InitWalletDirTestingSetup: public BasicTestingSetup {
     fs::path m_datadir;
     fs::path m_cwd;
     std::map<std::string, fs::path> m_walletdir_path_cases;
-    std::unique_ptr<interfaces::Chain> m_chain = interfaces::MakeChain(m_node);
     std::unique_ptr<interfaces::WalletClient> m_wallet_client;
 };
 

src/wallet/test/ismine_tests.cpp

@@ -27,8 +27,7 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     CKey uncompressedKey;
     uncompressedKey.MakeNewKey(false);
     CPubKey uncompressedPubkey = uncompressedKey.GetPubKey();
-    NodeContext node;
+    std::unique_ptr<interfaces::Chain>& chain = m_node.chain;
-    std::unique_ptr<interfaces::Chain> chain = interfaces::MakeChain(node);
 
     CScript scriptPubKey;
     isminetype result;

src/wallet/test/scriptpubkeyman_tests.cpp

@@ -17,9 +17,7 @@ BOOST_FIXTURE_TEST_SUITE(scriptpubkeyman_tests, BasicTestingSetup)
 BOOST_AUTO_TEST_CASE(CanProvide)
 {
     // Set up wallet and keyman variables.
-    NodeContext node;
+    CWallet wallet(m_node.chain.get(), "", CreateDummyWalletDatabase());
-    std::unique_ptr<interfaces::Chain> chain = interfaces::MakeChain(node);
-    CWallet wallet(chain.get(), "", CreateDummyWalletDatabase());
     LegacyScriptPubKeyMan& keyman = *wallet.GetOrCreateLegacyScriptPubKeyMan();
 
     // Make a 1 of 2 multisig script

src/wallet/test/wallet_test_fixture.cpp

@@ -6,10 +6,10 @@
 
 WalletTestingSetup::WalletTestingSetup(const std::string& chainName)
     : TestingSetup(chainName),
-      m_wallet(m_chain.get(), "", CreateMockWalletDatabase())
+      m_wallet(m_node.chain.get(), "", CreateMockWalletDatabase())
 {
     bool fFirstRun;
     m_wallet.LoadWallet(fFirstRun);
-    m_chain_notifications_handler = m_chain->handleNotifications({ &m_wallet, [](CWallet*) {} });
+    m_chain_notifications_handler = m_node.chain->handleNotifications({ &m_wallet, [](CWallet*) {} });
     m_wallet_client->registerRpcs();
 }

src/wallet/test/wallet_test_fixture.h

@@ -20,8 +20,7 @@
 struct WalletTestingSetup : public TestingSetup {
     explicit WalletTestingSetup(const std::string& chainName = CBaseChainParams::MAIN);
 
-    std::unique_ptr<interfaces::Chain> m_chain = interfaces::MakeChain(m_node);
+    std::unique_ptr<interfaces::WalletClient> m_wallet_client = interfaces::MakeWalletClient(*m_node.chain, *Assert(m_node.args));
-    std::unique_ptr<interfaces::WalletClient> m_wallet_client = interfaces::MakeWalletClient(*m_chain, *Assert(m_node.args));
     CWallet m_wallet;
     std::unique_ptr<interfaces::Handler> m_chain_notifications_handler;
 };

src/wallet/test/wallet_tests.cpp

@@ -786,8 +786,7 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
 
 BOOST_FIXTURE_TEST_CASE(ZapSelectTx, TestChain100Setup)
 {
-    auto chain = interfaces::MakeChain(m_node);
+    auto wallet = TestLoadWallet(*m_node.chain);
-    auto wallet = TestLoadWallet(*chain);
     CKey key;
     key.MakeNewKey(true);
     AddKey(*wallet, key);