test: refactor: Give unit test functions access to test state

Add unit test subclasses as needed so unit test functions that need to access
members like m_rng can reference it directly.

16 files changed, 145 insertions, 81 deletions

diff --git a/src/test/bip324_tests.cpp b/src/test/bip324_tests.cpp
index 1ed7e23bcf..44e8686aa4 100644
--- a/src/test/bip324_tests.cpp
+++ b/src/test/bip324_tests.cpp
@@ -20,6 +20,7 @@
 
 namespace {
 
+struct BIP324Test : BasicTestingSetup {
 void TestBIP324PacketVector(
     uint32_t in_idx,
     const std::string& in_priv_ours_hex,
@@ -155,10 +156,11 @@ void TestBIP324PacketVector(
         }
     }
 }
+}; // struct BIP324Test
 
 }  // namespace
 
-BOOST_FIXTURE_TEST_SUITE(bip324_tests, BasicTestingSetup)
+BOOST_FIXTURE_TEST_SUITE(bip324_tests, BIP324Test)
 
 BOOST_AUTO_TEST_CASE(packet_test_vectors) {
     // BIP324 key derivation uses network magic in the HKDF process. We use mainnet params here
diff --git a/src/test/bloom_tests.cpp b/src/test/bloom_tests.cpp
index 0c6e2e752d..5bcfd8d574 100644
--- a/src/test/bloom_tests.cpp
+++ b/src/test/bloom_tests.cpp
@@ -22,7 +22,13 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_FIXTURE_TEST_SUITE(bloom_tests, BasicTestingSetup)
+namespace bloom_tests {
+struct BloomTest : public BasicTestingSetup {
+    std::vector<unsigned char> RandomData();
+};
+} // namespace bloom_tests
+
+BOOST_FIXTURE_TEST_SUITE(bloom_tests, BloomTest)
 
 BOOST_AUTO_TEST_CASE(bloom_create_insert_serialize)
 {
@@ -455,7 +461,7 @@ BOOST_AUTO_TEST_CASE(merkle_block_4_test_update_none)
     BOOST_CHECK(!filter.contains(COutPoint(Txid::FromHex("02981fa052f0481dbc5868f4fc2166035a10f27a03cfd2de67326471df5bc041").value(), 0)));
 }
 
-static std::vector<unsigned char> RandomData()
+std::vector<unsigned char> BloomTest::RandomData()
 {
     uint256 r = InsecureRand256();
     return std::vector<unsigned char>(r.begin(), r.end());
diff --git a/src/test/checkqueue_tests.cpp b/src/test/checkqueue_tests.cpp
index 7810d91a77..b1ad9bf759 100644
--- a/src/test/checkqueue_tests.cpp
+++ b/src/test/checkqueue_tests.cpp
@@ -34,7 +34,9 @@ struct NoLockLoggingTestingSetup : public TestingSetup {
 #endif
 };
 
-BOOST_FIXTURE_TEST_SUITE(checkqueue_tests, NoLockLoggingTestingSetup)
+struct CheckQueueTest : NoLockLoggingTestingSetup {
+    void Correct_Queue_range(std::vector<size_t> range);
+};
 
 static const unsigned int QUEUE_BATCH_SIZE = 128;
 static const int SCRIPT_CHECK_THREADS = 3;
@@ -156,7 +158,7 @@ typedef CCheckQueue<FrozenCleanupCheck> FrozenCleanup_Queue;
 /** This test case checks that the CCheckQueue works properly
  * with each specified size_t Checks pushed.
  */
-static void Correct_Queue_range(std::vector<size_t> range)
+void CheckQueueTest::Correct_Queue_range(std::vector<size_t> range)
 {
     auto small_queue = std::make_unique<Correct_Queue>(QUEUE_BATCH_SIZE, SCRIPT_CHECK_THREADS);
     // Make vChecks here to save on malloc (this test can be slow...)
@@ -177,6 +179,8 @@ static void Correct_Queue_range(std::vector<size_t> range)
     }
 }
 
+BOOST_FIXTURE_TEST_SUITE(checkqueue_tests, CheckQueueTest)
+
 /** Test that 0 checks is correct
  */
 BOOST_AUTO_TEST_CASE(test_CheckQueue_Correct_Zero)
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index fb929a2b0e..d9fbed11ec 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -105,6 +105,7 @@ BOOST_FIXTURE_TEST_SUITE(coins_tests, BasicTestingSetup)
 
 static const unsigned int NUM_SIMULATION_ITERATIONS = 40000;
 
+struct CacheTest : BasicTestingSetup {
 // This is a large randomized insert/remove simulation test on a variable-size
 // stack of caches on top of CCoinsViewTest.
 //
@@ -277,9 +278,10 @@ void SimulationTest(CCoinsView* base, bool fake_best_block)
     BOOST_CHECK(uncached_an_entry);
     BOOST_CHECK(flushed_without_erase);
 }
+}; // struct CacheTest
 
 // Run the above simulation for multiple base types.
-BOOST_AUTO_TEST_CASE(coins_cache_simulation_test)
+BOOST_FIXTURE_TEST_CASE(coins_cache_simulation_test, CacheTest)
 {
     CCoinsViewTest base;
     SimulationTest(&base, false);
@@ -288,6 +290,7 @@ BOOST_AUTO_TEST_CASE(coins_cache_simulation_test)
     SimulationTest(&db_base, true);
 }
 
+struct UpdateTest : BasicTestingSetup {
 // Store of all necessary tx and undo data for next test
 typedef std::map<COutPoint, std::tuple<CTransaction,CTxUndo,Coin>> UtxoData;
 UtxoData utxoData;
@@ -302,6 +305,7 @@ UtxoData::iterator FindRandomFrom(const std::set<COutPoint> &utxoSet) {
     assert(utxoDataIt != utxoData.end());
     return utxoDataIt;
 }
+}; // struct UpdateTest
 
 
 // This test is similar to the previous test
@@ -309,7 +313,7 @@ UtxoData::iterator FindRandomFrom(const std::set<COutPoint> &utxoSet) {
 // random txs are created and UpdateCoins is used to update the cache stack
 // In particular it is tested that spending a duplicate coinbase tx
 // has the expected effect (the other duplicate is overwritten at all cache levels)
-BOOST_AUTO_TEST_CASE(updatecoins_simulation_test)
+BOOST_FIXTURE_TEST_CASE(updatecoins_simulation_test, UpdateTest)
 {
     SeedRandomForTest(SeedRand::ZEROS);
 
@@ -888,6 +892,7 @@ BOOST_AUTO_TEST_CASE(ccoins_write)
 }
 
 
+struct FlushTest : BasicTestingSetup {
 Coin MakeCoin()
 {
     Coin coin;
@@ -919,7 +924,7 @@ void TestFlushBehavior(
     size_t cache_usage;
     size_t cache_size;
 
-    auto flush_all = [&all_caches](bool erase) {
+    auto flush_all = [this, &all_caches](bool erase) {
         // Flush in reverse order to ensure that flushes happen from children up.
         for (auto i = all_caches.rbegin(); i != all_caches.rend(); ++i) {
             auto& cache = *i;
@@ -1074,8 +1079,9 @@ void TestFlushBehavior(
     BOOST_CHECK(!all_caches[0]->HaveCoinInCache(outp));
     BOOST_CHECK(!base.HaveCoin(outp));
 }
+}; // struct FlushTest
 
-BOOST_AUTO_TEST_CASE(ccoins_flush_behavior)
+BOOST_FIXTURE_TEST_CASE(ccoins_flush_behavior, FlushTest)
 {
     // Create two in-memory caches atop a leveldb view.
     CCoinsViewDB base{{.path = "test", .cache_bytes = 1 << 23, .memory_only = true}, {}};
diff --git a/src/test/crypto_tests.cpp b/src/test/crypto_tests.cpp
index f84e04e819..209c4aae14 100644
--- a/src/test/crypto_tests.cpp
+++ b/src/test/crypto_tests.cpp
@@ -25,10 +25,11 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_FIXTURE_TEST_SUITE(crypto_tests, BasicTestingSetup)
+namespace crypto_tests {
+struct CryptoTest : BasicTestingSetup {
 
 template<typename Hasher, typename In, typename Out>
-static void TestVector(const Hasher &h, const In &in, const Out &out) {
+void TestVector(const Hasher &h, const In &in, const Out &out) {
     Out hash;
     BOOST_CHECK(out.size() == h.OUTPUT_SIZE);
     hash.resize(out.size());
@@ -56,22 +57,22 @@ static void TestVector(const Hasher &h, const In &in, const Out &out) {
     }
 }
 
-static void TestSHA1(const std::string &in, const std::string &hexout) { TestVector(CSHA1(), in, ParseHex(hexout));}
-static void TestSHA256(const std::string &in, const std::string &hexout) { TestVector(CSHA256(), in, ParseHex(hexout));}
-static void TestSHA512(const std::string &in, const std::string &hexout) { TestVector(CSHA512(), in, ParseHex(hexout));}
-static void TestRIPEMD160(const std::string &in, const std::string &hexout) { TestVector(CRIPEMD160(), in, ParseHex(hexout));}
+void TestSHA1(const std::string &in, const std::string &hexout) { TestVector(CSHA1(), in, ParseHex(hexout));}
+void TestSHA256(const std::string &in, const std::string &hexout) { TestVector(CSHA256(), in, ParseHex(hexout));}
+void TestSHA512(const std::string &in, const std::string &hexout) { TestVector(CSHA512(), in, ParseHex(hexout));}
+void TestRIPEMD160(const std::string &in, const std::string &hexout) { TestVector(CRIPEMD160(), in, ParseHex(hexout));}
 
-static void TestHMACSHA256(const std::string &hexkey, const std::string &hexin, const std::string &hexout) {
+void TestHMACSHA256(const std::string &hexkey, const std::string &hexin, const std::string &hexout) {
     std::vector<unsigned char> key = ParseHex(hexkey);
     TestVector(CHMAC_SHA256(key.data(), key.size()), ParseHex(hexin), ParseHex(hexout));
 }
 
-static void TestHMACSHA512(const std::string &hexkey, const std::string &hexin, const std::string &hexout) {
+void TestHMACSHA512(const std::string &hexkey, const std::string &hexin, const std::string &hexout) {
     std::vector<unsigned char> key = ParseHex(hexkey);
     TestVector(CHMAC_SHA512(key.data(), key.size()), ParseHex(hexin), ParseHex(hexout));
 }
 
-static void TestAES256(const std::string &hexkey, const std::string &hexin, const std::string &hexout)
+void TestAES256(const std::string &hexkey, const std::string &hexin, const std::string &hexout)
 {
     std::vector<unsigned char> key = ParseHex(hexkey);
     std::vector<unsigned char> in = ParseHex(hexin);
@@ -90,7 +91,7 @@ static void TestAES256(const std::string &hexkey, const std::string &hexin, cons
     BOOST_CHECK(buf == in);
 }
 
-static void TestAES256CBC(const std::string &hexkey, const std::string &hexiv, bool pad, const std::string &hexin, const std::string &hexout)
+void TestAES256CBC(const std::string &hexkey, const std::string &hexiv, bool pad, const std::string &hexin, const std::string &hexout)
 {
     std::vector<unsigned char> key = ParseHex(hexkey);
     std::vector<unsigned char> iv = ParseHex(hexiv);
@@ -131,7 +132,7 @@ static void TestAES256CBC(const std::string &hexkey, const std::string &hexiv, b
     }
 }
 
-static void TestChaCha20(const std::string &hex_message, const std::string &hexkey, ChaCha20::Nonce96 nonce, uint32_t seek, const std::string& hexout)
+void TestChaCha20(const std::string &hex_message, const std::string &hexkey, ChaCha20::Nonce96 nonce, uint32_t seek, const std::string& hexout)
 {
     auto key = ParseHex<std::byte>(hexkey);
     assert(key.size() == 32);
@@ -182,7 +183,7 @@ static void TestChaCha20(const std::string &hex_message, const std::string &hexk
     }
 }
 
-static void TestFSChaCha20(const std::string& hex_plaintext, const std::string& hexkey, uint32_t rekey_interval, const std::string& ciphertext_after_rotation)
+void TestFSChaCha20(const std::string& hex_plaintext, const std::string& hexkey, uint32_t rekey_interval, const std::string& ciphertext_after_rotation)
 {
     auto key = ParseHex<std::byte>(hexkey);
     BOOST_CHECK_EQUAL(FSChaCha20::KEYLEN, key.size());
@@ -222,7 +223,7 @@ static void TestFSChaCha20(const std::string& hex_plaintext, const std::string&
     BOOST_CHECK_EQUAL(HexStr(fsc20_output), ciphertext_after_rotation);
 }
 
-static void TestPoly1305(const std::string &hexmessage, const std::string &hexkey, const std::string& hextag)
+void TestPoly1305(const std::string &hexmessage, const std::string &hexkey, const std::string& hextag)
 {
     auto key = ParseHex<std::byte>(hexkey);
     auto m = ParseHex<std::byte>(hexmessage);
@@ -247,7 +248,7 @@ static void TestPoly1305(const std::string &hexmessage, const std::string &hexke
     }
 }
 
-static void TestChaCha20Poly1305(const std::string& plain_hex, const std::string& aad_hex, const std::string& key_hex, ChaCha20::Nonce96 nonce, const std::string& cipher_hex)
+void TestChaCha20Poly1305(const std::string& plain_hex, const std::string& aad_hex, const std::string& key_hex, ChaCha20::Nonce96 nonce, const std::string& cipher_hex)
 {
     auto plain = ParseHex<std::byte>(plain_hex);
     auto aad = ParseHex<std::byte>(aad_hex);
@@ -288,7 +289,7 @@ static void TestChaCha20Poly1305(const std::string& plain_hex, const std::string
     }
 }
 
-static void TestFSChaCha20Poly1305(const std::string& plain_hex, const std::string& aad_hex, const std::string& key_hex, uint64_t msg_idx, const std::string& cipher_hex)
+void TestFSChaCha20Poly1305(const std::string& plain_hex, const std::string& aad_hex, const std::string& key_hex, uint64_t msg_idx, const std::string& cipher_hex)
 {
     auto plain = ParseHex<std::byte>(plain_hex);
     auto aad = ParseHex<std::byte>(aad_hex);
@@ -334,7 +335,7 @@ static void TestFSChaCha20Poly1305(const std::string& plain_hex, const std::stri
     }
 }
 
-static void TestHKDF_SHA256_32(const std::string &ikm_hex, const std::string &salt_hex, const std::string &info_hex, const std::string &okm_check_hex) {
+void TestHKDF_SHA256_32(const std::string &ikm_hex, const std::string &salt_hex, const std::string &info_hex, const std::string &okm_check_hex) {
     std::vector<unsigned char> initial_key_material = ParseHex(ikm_hex);
     std::vector<unsigned char> salt = ParseHex(salt_hex);
     std::vector<unsigned char> info = ParseHex(info_hex);
@@ -350,6 +351,10 @@ static void TestHKDF_SHA256_32(const std::string &ikm_hex, const std::string &sa
     BOOST_CHECK(HexStr(out) == okm_check_hex);
 }
 
+void TestSHA3_256(const std::string& input, const std::string& output);
+}; // struct CryptoTests
+} // namespace crypto_tests
+
 static std::string LongTestString()
 {
     std::string ret;
@@ -365,6 +370,8 @@ static std::string LongTestString()
 
 const std::string test1 = LongTestString();
 
+BOOST_FIXTURE_TEST_SUITE(crypto_tests, CryptoTest)
+
 BOOST_AUTO_TEST_CASE(ripemd160_testvectors) {
     TestRIPEMD160("", "9c1185a5c5e9fc54612808977ee8f548b2258d31");
     TestRIPEMD160("abc", "8eb208f7e05d987a9b044a8e98c6b087f15a0bfc");
@@ -1076,7 +1083,7 @@ BOOST_AUTO_TEST_CASE(sha256d64)
     }
 }
 
-static void TestSHA3_256(const std::string& input, const std::string& output)
+void CryptoTest::TestSHA3_256(const std::string& input, const std::string& output)
 {
     const auto in_bytes = ParseHex(input);
     const auto out_bytes = ParseHex(output);
diff --git a/src/test/cuckoocache_tests.cpp b/src/test/cuckoocache_tests.cpp
index fc22daeb57..c80b06a57a 100644
--- a/src/test/cuckoocache_tests.cpp
+++ b/src/test/cuckoocache_tests.cpp
@@ -29,7 +29,7 @@
  *  using BOOST_CHECK_CLOSE to fail.
  *
  */
-BOOST_AUTO_TEST_SUITE(cuckoocache_tests);
+BOOST_FIXTURE_TEST_SUITE(cuckoocache_tests, BasicTestingSetup);
 
 /* Test that no values not inserted into the cache are read out of it.
  *
@@ -49,11 +49,12 @@ BOOST_AUTO_TEST_CASE(test_cuckoocache_no_fakes)
     }
 };
 
+struct HitRateTest : BasicTestingSetup {
 /** This helper returns the hit rate when megabytes*load worth of entries are
  * inserted into a megabytes sized cache
  */
 template <typename Cache>
-static double test_cache(size_t megabytes, double load)
+double test_cache(size_t megabytes, double load)
 {
     SeedRandomForTest(SeedRand::ZEROS);
     std::vector<uint256> hashes;
@@ -104,9 +105,10 @@ static double normalize_hit_rate(double hits, double load)
 {
     return hits * std::max(load, 1.0);
 }
+}; // struct HitRateTest
 
 /** Check the hit rate on loads ranging from 0.1 to 1.6 */
-BOOST_AUTO_TEST_CASE(cuckoocache_hit_rate_ok)
+BOOST_FIXTURE_TEST_CASE(cuckoocache_hit_rate_ok, HitRateTest)
 {
     /** Arbitrarily selected Hit Rate threshold that happens to work for this test
      * as a lower bound on performance.
@@ -120,10 +122,11 @@ BOOST_AUTO_TEST_CASE(cuckoocache_hit_rate_ok)
 }
 
 
+struct EraseTest : BasicTestingSetup {
 /** This helper checks that erased elements are preferentially inserted onto and
  * that the hit rate of "fresher" keys is reasonable*/
 template <typename Cache>
-static void test_cache_erase(size_t megabytes)
+void test_cache_erase(size_t megabytes)
 {
     double load = 1;
     SeedRandomForTest(SeedRand::ZEROS);
@@ -178,15 +181,17 @@ static void test_cache_erase(size_t megabytes)
     // erased elements.
     BOOST_CHECK(hit_rate_stale > 2 * hit_rate_erased_but_contained);
 }
+}; // struct EraseTest
 
-BOOST_AUTO_TEST_CASE(cuckoocache_erase_ok)
+BOOST_FIXTURE_TEST_CASE(cuckoocache_erase_ok, EraseTest)
 {
     size_t megabytes = 4;
     test_cache_erase<CuckooCache::cache<uint256, SignatureCacheHasher>>(megabytes);
 }
 
+struct EraseParallelTest : BasicTestingSetup {
 template <typename Cache>
-static void test_cache_erase_parallel(size_t megabytes)
+void test_cache_erase_parallel(size_t megabytes)
 {
     double load = 1;
     SeedRandomForTest(SeedRand::ZEROS);
@@ -268,15 +273,17 @@ static void test_cache_erase_parallel(size_t megabytes)
     // erased elements.
     BOOST_CHECK(hit_rate_stale > 2 * hit_rate_erased_but_contained);
 }
-BOOST_AUTO_TEST_CASE(cuckoocache_erase_parallel_ok)
+}; // struct EraseParallelTest
+BOOST_FIXTURE_TEST_CASE(cuckoocache_erase_parallel_ok, EraseParallelTest)
 {
     size_t megabytes = 4;
     test_cache_erase_parallel<CuckooCache::cache<uint256, SignatureCacheHasher>>(megabytes);
 }
 
 
+struct GenerationsTest : BasicTestingSetup {
 template <typename Cache>
-static void test_cache_generations()
+void test_cache_generations()
 {
     // This test checks that for a simulation of network activity, the fresh hit
     // rate is never below 99%, and the number of times that it is worse than
@@ -365,7 +372,8 @@ static void test_cache_generations()
     // max_rate_less_than_tight_hit_rate of the time
     BOOST_CHECK(double(out_of_tight_tolerance) / double(total) < max_rate_less_than_tight_hit_rate);
 }
-BOOST_AUTO_TEST_CASE(cuckoocache_generations)
+}; // struct GenerationsTest
+BOOST_FIXTURE_TEST_CASE(cuckoocache_generations, GenerationsTest)
 {
     test_cache_generations<CuckooCache::cache<uint256, SignatureCacheHasher>>();
 }
diff --git a/src/test/denialofservice_tests.cpp b/src/test/denialofservice_tests.cpp
index 42db28daf5..66d6da1361 100644
--- a/src/test/denialofservice_tests.cpp
+++ b/src/test/denialofservice_tests.cpp
@@ -106,7 +106,8 @@ BOOST_AUTO_TEST_CASE(outbound_slow_chain_eviction)
     peerman.FinalizeNode(dummyNode1);
 }
 
-static void AddRandomOutboundPeer(NodeId& id, std::vector<CNode*>& vNodes, PeerManager& peerLogic, ConnmanTestMsg& connman, ConnectionType connType, bool onion_peer = false)
+struct OutboundTest : TestingSetup {
+void AddRandomOutboundPeer(NodeId& id, std::vector<CNode*>& vNodes, PeerManager& peerLogic, ConnmanTestMsg& connman, ConnectionType connType, bool onion_peer = false)
 {
     CAddress addr;
 
@@ -136,8 +137,9 @@ static void AddRandomOutboundPeer(NodeId& id, std::vector<CNode*>& vNodes, PeerM
 
     connman.AddTestNode(node);
 }
+}; // struct OutboundTest
 
-BOOST_AUTO_TEST_CASE(stale_tip_peer_management)
+BOOST_FIXTURE_TEST_CASE(stale_tip_peer_management, OutboundTest)
 {
     NodeId id{0};
     auto connman = std::make_unique<ConnmanTestMsg>(0x1337, 0x1337, *m_node.addrman, *m_node.netgroupman, Params());
@@ -235,7 +237,7 @@ BOOST_AUTO_TEST_CASE(stale_tip_peer_management)
     connman->ClearTestNodes();
 }
 
-BOOST_AUTO_TEST_CASE(block_relay_only_eviction)
+BOOST_FIXTURE_TEST_CASE(block_relay_only_eviction, OutboundTest)
 {
     NodeId id{0};
     auto connman = std::make_unique<ConnmanTestMsg>(0x1337, 0x1337, *m_node.addrman, *m_node.netgroupman, Params());
diff --git a/src/test/hash_tests.cpp b/src/test/hash_tests.cpp
index 150e386c2d..206f09763a 100644
--- a/src/test/hash_tests.cpp
+++ b/src/test/hash_tests.cpp
@@ -11,7 +11,7 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_AUTO_TEST_SUITE(hash_tests)
+BOOST_FIXTURE_TEST_SUITE(hash_tests, BasicTestingSetup)
 
 BOOST_AUTO_TEST_CASE(murmurhash3)
 {
diff --git a/src/test/miniscript_tests.cpp b/src/test/miniscript_tests.cpp
index 815c278b8c..09e0cba98f 100644
--- a/src/test/miniscript_tests.cpp
+++ b/src/test/miniscript_tests.cpp
@@ -340,6 +340,7 @@ void SatisfactionToWitness(miniscript::MiniscriptContext ctx, CScriptWitness& wi
     witness.stack.push_back(*builder.GetSpendData().scripts.begin()->second.begin());
 }
 
+struct MiniScriptTest : BasicTestingSetup {
 /** Run random satisfaction tests. */
 void TestSatisfy(const KeyConverter& converter, const std::string& testcase, const NodeRef& node) {
     auto script = node->ToScript(converter);
@@ -488,10 +489,11 @@ void Test(const std::string& ms, const std::string& hexscript, const std::string
          /*opslimit=*/-1, /*stacklimit=*/-1,
          /*max_wit_size=*/std::nullopt, /*max_tap_wit_size=*/std::nullopt, /*stack_exec=*/std::nullopt);
 }
+}; // struct MiniScriptTest
 
 } // namespace
 
-BOOST_FIXTURE_TEST_SUITE(miniscript_tests, BasicTestingSetup)
+BOOST_FIXTURE_TEST_SUITE(miniscript_tests, MiniScriptTest)
 
 BOOST_AUTO_TEST_CASE(fixed_tests)
 {
diff --git a/src/test/minisketch_tests.cpp b/src/test/minisketch_tests.cpp
index 10506da783..3701d79235 100644
--- a/src/test/minisketch_tests.cpp
+++ b/src/test/minisketch_tests.cpp
@@ -14,7 +14,7 @@
 
 using node::MakeMinisketch32;
 
-BOOST_AUTO_TEST_SUITE(minisketch_tests)
+BOOST_FIXTURE_TEST_SUITE(minisketch_tests, BasicTestingSetup)
 
 BOOST_AUTO_TEST_CASE(minisketch_test)
 {
diff --git a/src/test/net_peer_connection_tests.cpp b/src/test/net_peer_connection_tests.cpp
index 2dde6daee5..a9bb013c75 100644
--- a/src/test/net_peer_connection_tests.cpp
+++ b/src/test/net_peer_connection_tests.cpp
@@ -43,8 +43,9 @@ static CService ip(uint32_t i)
     return CService{CNetAddr{s}, Params().GetDefaultPort()};
 }
 
+struct PeerTest : LogIPsTestingSetup {
 /** Create a peer and connect to it. If the optional `address` (IP/CJDNS only) isn't passed, a random address is created. */
-static void AddPeer(NodeId& id, std::vector<CNode*>& nodes, PeerManager& peerman, ConnmanTestMsg& connman, ConnectionType conn_type, bool onion_peer = false, std::optional<std::string> address = std::nullopt)
+void AddPeer(NodeId& id, std::vector<CNode*>& nodes, PeerManager& peerman, ConnmanTestMsg& connman, ConnectionType conn_type, bool onion_peer = false, std::optional<std::string> address = std::nullopt)
 {
     CAddress addr{};
 
@@ -80,8 +81,9 @@ static void AddPeer(NodeId& id, std::vector<CNode*>& nodes, PeerManager& peerman
 
     connman.AddTestNode(node);
 }
+}; // struct PeerTest
 
-BOOST_AUTO_TEST_CASE(test_addnode_getaddednodeinfo_and_connection_detection)
+BOOST_FIXTURE_TEST_CASE(test_addnode_getaddednodeinfo_and_connection_detection, PeerTest)
 {
     auto connman = std::make_unique<ConnmanTestMsg>(0x1337, 0x1337, *m_node.addrman, *m_node.netgroupman, Params());
     auto peerman = PeerManager::make(*connman, *m_node.addrman, nullptr, *m_node.chainman, *m_node.mempool, *m_node.warnings, {});
diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index c5a8f2dfbc..68e54f2fc0 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -110,8 +110,7 @@ static ScriptError_t ParseScriptError(const std::string& name)
     return SCRIPT_ERR_UNKNOWN_ERROR;
 }
 
-BOOST_FIXTURE_TEST_SUITE(script_tests, BasicTestingSetup)
-
+struct ScriptTest : BasicTestingSetup {
 void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, const CScriptWitness& scriptWitness, uint32_t flags, const std::string& message, int scriptError, CAmount nValue = 0)
 {
     bool expect = (scriptError == SCRIPT_ERR_OK);
@@ -136,6 +135,7 @@ void DoTest(const CScript& scriptPubKey, const CScript& scriptSig, const CScript
         BOOST_CHECK_MESSAGE(VerifyScript(scriptSig, scriptPubKey, &scriptWitness, combined_flags, MutableTransactionSignatureChecker(&tx, 0, txCredit.vout[0].nValue, MissingDataBehavior::ASSERT_FAIL), &err) == expect, message + strprintf(" (with flags %x)", combined_flags));
     }
 }
+}; // struct ScriptTest
 
 void static NegateSignatureS(std::vector<unsigned char>& vchSig) {
     // Parse the signature.
@@ -369,11 +369,11 @@ public:
         return *this;
     }
 
-    TestBuilder& Test()
+    TestBuilder& Test(ScriptTest& test)
     {
         TestBuilder copy = *this; // Make a copy so we can rollback the push.
         DoPush();
-        DoTest(creditTx->vout[0].scriptPubKey, spendTx.vin[0].scriptSig, scriptWitness, flags, comment, scriptError, nValue);
+        test.DoTest(creditTx->vout[0].scriptPubKey, spendTx.vin[0].scriptSig, scriptWitness, flags, comment, scriptError, nValue);
         *this = copy;
         return *this;
     }
@@ -425,6 +425,8 @@ std::string JSONPrettyPrint(const UniValue& univalue)
 }
 } // namespace
 
+BOOST_FIXTURE_TEST_SUITE(script_tests, ScriptTest)
+
 BOOST_AUTO_TEST_CASE(script_build)
 {
     const KeyData keys;
@@ -884,7 +886,7 @@ BOOST_AUTO_TEST_CASE(script_build)
     std::string strGen;
 #endif
     for (TestBuilder& test : tests) {
-        test.Test();
+        test.Test(*this);
         std::string str = JSONPrettyPrint(test.GetJSON());
 #ifdef UPDATE_JSON_TESTS
         strGen += str + ",\n";
diff --git a/src/test/sighash_tests.cpp b/src/test/sighash_tests.cpp
index 70a18835d2..a77e921c66 100644
--- a/src/test/sighash_tests.cpp
+++ b/src/test/sighash_tests.cpp
@@ -82,7 +82,8 @@ uint256 static SignatureHashOld(CScript scriptCode, const CTransaction& txTo, un
     return ss.GetHash();
 }
 
-void static RandomScript(CScript &script) {
+struct SigHashTest : BasicTestingSetup {
+void RandomScript(CScript &script) {
     static const opcodetype oplist[] = {OP_FALSE, OP_1, OP_2, OP_3, OP_CHECKSIG, OP_IF, OP_VERIF, OP_RETURN, OP_CODESEPARATOR};
     script = CScript();
     int ops = (InsecureRandRange(10));
@@ -90,7 +91,7 @@ void static RandomScript(CScript &script) {
         script << oplist[InsecureRandRange(std::size(oplist))];
 }
 
-void static RandomTransaction(CMutableTransaction& tx, bool fSingle)
+void RandomTransaction(CMutableTransaction& tx, bool fSingle)
 {
     tx.version = InsecureRand32();
     tx.vin.clear();
@@ -113,8 +114,9 @@ void static RandomTransaction(CMutableTransaction& tx, bool fSingle)
         RandomScript(txout.scriptPubKey);
     }
 }
+}; // struct SigHashTest
 
-BOOST_FIXTURE_TEST_SUITE(sighash_tests, BasicTestingSetup)
+BOOST_FIXTURE_TEST_SUITE(sighash_tests, SigHashTest)
 
 BOOST_AUTO_TEST_CASE(sighash_test)
 {
diff --git a/src/test/txpackage_tests.cpp b/src/test/txpackage_tests.cpp
index ca9dc5527d..303f45c655 100644
--- a/src/test/txpackage_tests.cpp
+++ b/src/test/txpackage_tests.cpp
@@ -20,11 +20,11 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_AUTO_TEST_SUITE(txpackage_tests)
 // A fee amount that is above 1sat/vB but below 5sat/vB for most transactions created within these
 // unit tests.
 static const CAmount low_fee_amt{200};
 
+struct TxPackageTest : TestChain100Setup {
 // Create placeholder transactions that have no meaning.
 inline CTransactionRef create_placeholder_tx(size_t num_inputs, size_t num_outputs)
 {
@@ -43,7 +43,11 @@ inline CTransactionRef create_placeholder_tx(size_t num_inputs, size_t num_outpu
     }
     return MakeTransactionRef(mtx);
 }
-BOOST_FIXTURE_TEST_CASE(package_hash_tests, TestChain100Setup)
+}; // struct TxPackageTest
+
+BOOST_FIXTURE_TEST_SUITE(txpackage_tests, TxPackageTest)
+
+BOOST_AUTO_TEST_CASE(package_hash_tests)
 {
     // Random real segwit transaction
     DataStream stream_1{
@@ -124,7 +128,7 @@ BOOST_FIXTURE_TEST_CASE(package_hash_tests, TestChain100Setup)
     BOOST_CHECK_EQUAL(calculated_hash_123, GetPackageHash(package_321));
 }
 
-BOOST_FIXTURE_TEST_CASE(package_sanitization_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_sanitization_tests)
 {
     // Packages can't have more than 25 transactions.
     Package package_too_many;
@@ -194,7 +198,7 @@ BOOST_FIXTURE_TEST_CASE(package_sanitization_tests, TestChain100Setup)
     BOOST_CHECK(IsConsistentPackage(package_with_dup_tx));
 }
 
-BOOST_FIXTURE_TEST_CASE(package_validation_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_validation_tests)
 {
     LOCK(cs_main);
     unsigned int initialPoolSize = m_node.mempool->size();
@@ -249,7 +253,7 @@ BOOST_FIXTURE_TEST_CASE(package_validation_tests, TestChain100Setup)
     BOOST_CHECK_EQUAL(m_node.mempool->size(), initialPoolSize);
 }
 
-BOOST_FIXTURE_TEST_CASE(noncontextual_package_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(noncontextual_package_tests)
 {
     // The signatures won't be verified so we can just use a placeholder
     CKey placeholder_key = GenerateRandomKey();
@@ -345,7 +349,7 @@ BOOST_FIXTURE_TEST_CASE(noncontextual_package_tests, TestChain100Setup)
     }
 }
 
-BOOST_FIXTURE_TEST_CASE(package_submission_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_submission_tests)
 {
     LOCK(cs_main);
     unsigned int expected_pool_size = m_node.mempool->size();
@@ -488,7 +492,7 @@ BOOST_FIXTURE_TEST_CASE(package_submission_tests, TestChain100Setup)
 
 // Tests for packages containing transactions that have same-txid-different-witness equivalents in
 // the mempool.
-BOOST_FIXTURE_TEST_CASE(package_witness_swap_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_witness_swap_tests)
 {
     // Mine blocks to mature coinbases.
     mineBlocks(5);
@@ -722,7 +726,7 @@ BOOST_FIXTURE_TEST_CASE(package_witness_swap_tests, TestChain100Setup)
     }
 }
 
-BOOST_FIXTURE_TEST_CASE(package_cpfp_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_cpfp_tests)
 {
     mineBlocks(5);
     MockMempoolMinFee(CFeeRate(5000));
@@ -933,7 +937,7 @@ BOOST_FIXTURE_TEST_CASE(package_cpfp_tests, TestChain100Setup)
     }
 }
 
-BOOST_FIXTURE_TEST_CASE(package_rbf_tests, TestChain100Setup)
+BOOST_AUTO_TEST_CASE(package_rbf_tests)
 {
     mineBlocks(5);
     LOCK(::cs_main);
diff --git a/src/test/txrequest_tests.cpp b/src/test/txrequest_tests.cpp
index 0ca70d2c7a..f7f54a8459 100644
--- a/src/test/txrequest_tests.cpp
+++ b/src/test/txrequest_tests.cpp
@@ -15,10 +15,23 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_FIXTURE_TEST_SUITE(txrequest_tests, BasicTestingSetup)
-
 namespace {
 
+class Scenario;
+
+struct TxRequestTest : BasicTestingSetup {
+    std::chrono::microseconds RandomTime8s();
+    std::chrono::microseconds RandomTime1y();
+    void BuildSingleTest(Scenario& scenario, int config);
+    void BuildPriorityTest(Scenario& scenario, int config);
+    void BuildBigPriorityTest(Scenario& scenario, int peers);
+    void BuildRequestOrderTest(Scenario& scenario, int config);
+    void BuildWtxidTest(Scenario& scenario, int config);
+    void BuildTimeBackwardsTest(Scenario& scenario);
+    void BuildWeirdRequestsTest(Scenario& scenario);
+    void TestInterleavedScenarios();
+};
+
 constexpr std::chrono::microseconds MIN_TIME = std::chrono::microseconds::min();
 constexpr std::chrono::microseconds MAX_TIME = std::chrono::microseconds::max();
 constexpr std::chrono::microseconds MICROSECOND = std::chrono::microseconds{1};
@@ -51,8 +64,8 @@ struct Runner
     std::multiset<std::pair<NodeId, GenTxid>> expired;
 };
 
-std::chrono::microseconds RandomTime8s() { return std::chrono::microseconds{1 + InsecureRandBits(23)}; }
-std::chrono::microseconds RandomTime1y() { return std::chrono::microseconds{1 + InsecureRandBits(45)}; }
+std::chrono::microseconds TxRequestTest::RandomTime8s() { return std::chrono::microseconds{1 + InsecureRandBits(23)}; }
+std::chrono::microseconds TxRequestTest::RandomTime1y() { return std::chrono::microseconds{1 + InsecureRandBits(45)}; }
 
 /** A proxy for a Runner that helps build a sequence of consecutive test actions on a TxRequestTracker.
  *
@@ -245,7 +258,7 @@ public:
  *
  * config is an integer in [0, 32), which controls which variant of the test is used.
  */
-void BuildSingleTest(Scenario& scenario, int config)
+void TxRequestTest::BuildSingleTest(Scenario& scenario, int config)
 {
     auto peer = scenario.NewPeer();
     auto gtxid = scenario.NewGTxid();
@@ -305,7 +318,7 @@ void BuildSingleTest(Scenario& scenario, int config)
  *
  * config is an integer in [0, 32), which controls which variant of the test is used.
  */
-void BuildPriorityTest(Scenario& scenario, int config)
+void TxRequestTest::BuildPriorityTest(Scenario& scenario, int config)
 {
     scenario.SetTestName(strprintf("Priority(config=%i)", config));
 
@@ -367,7 +380,7 @@ void BuildPriorityTest(Scenario& scenario, int config)
 
 /** Add to scenario a randomized test in which N peers announce the same transaction, to verify
  *  the order in which they are requested. */
-void BuildBigPriorityTest(Scenario& scenario, int peers)
+void TxRequestTest::BuildBigPriorityTest(Scenario& scenario, int peers)
 {
     scenario.SetTestName(strprintf("BigPriority(peers=%i)", peers));
 
@@ -454,7 +467,7 @@ void BuildBigPriorityTest(Scenario& scenario, int peers)
  *
  *  config is an integer in [0, 4) inclusive, and selects the variant of the test.
  */
-void BuildRequestOrderTest(Scenario& scenario, int config)
+void TxRequestTest::BuildRequestOrderTest(Scenario& scenario, int config)
 {
     scenario.SetTestName(strprintf("RequestOrder(config=%i)", config));
 
@@ -489,7 +502,7 @@ void BuildRequestOrderTest(Scenario& scenario, int config)
  *
  *  config is an integer in [0, 4) inclusive, and selects the variant of the test used.
 */
-void BuildWtxidTest(Scenario& scenario, int config)
+void TxRequestTest::BuildWtxidTest(Scenario& scenario, int config)
 {
     scenario.SetTestName(strprintf("Wtxid(config=%i)", config));
 
@@ -559,7 +572,7 @@ void BuildWtxidTest(Scenario& scenario, int config)
 }
 
 /** Add to scenario a test that exercises clocks that go backwards. */
-void BuildTimeBackwardsTest(Scenario& scenario)
+void TxRequestTest::BuildTimeBackwardsTest(Scenario& scenario)
 {
     auto peer1 = scenario.NewPeer();
     auto peer2 = scenario.NewPeer();
@@ -605,7 +618,7 @@ void BuildTimeBackwardsTest(Scenario& scenario)
 }
 
 /** Add to scenario a test that involves RequestedTx() calls for txhashes not returned by GetRequestable. */
-void BuildWeirdRequestsTest(Scenario& scenario)
+void TxRequestTest::BuildWeirdRequestsTest(Scenario& scenario)
 {
     auto peer1 = scenario.NewPeer();
     auto peer2 = scenario.NewPeer();
@@ -682,19 +695,19 @@ void BuildWeirdRequestsTest(Scenario& scenario)
     scenario.Check(peer2, {}, 0, 0, 0, "q23");
 }
 
-void TestInterleavedScenarios()
+void TxRequestTest::TestInterleavedScenarios()
 {
     // Create a list of functions which add tests to scenarios.
     std::vector<std::function<void(Scenario&)>> builders;
     // Add instances of every test, for every configuration.
     for (int n = 0; n < 64; ++n) {
-        builders.emplace_back([n](Scenario& scenario){ BuildWtxidTest(scenario, n); });
-        builders.emplace_back([n](Scenario& scenario){ BuildRequestOrderTest(scenario, n & 3); });
-        builders.emplace_back([n](Scenario& scenario){ BuildSingleTest(scenario, n & 31); });
-        builders.emplace_back([n](Scenario& scenario){ BuildPriorityTest(scenario, n & 31); });
-        builders.emplace_back([n](Scenario& scenario){ BuildBigPriorityTest(scenario, (n & 7) + 1); });
-        builders.emplace_back([](Scenario& scenario){ BuildTimeBackwardsTest(scenario); });
-        builders.emplace_back([](Scenario& scenario){ BuildWeirdRequestsTest(scenario); });
+        builders.emplace_back([this, n](Scenario& scenario) { BuildWtxidTest(scenario, n); });
+        builders.emplace_back([this, n](Scenario& scenario) { BuildRequestOrderTest(scenario, n & 3); });
+        builders.emplace_back([this, n](Scenario& scenario) { BuildSingleTest(scenario, n & 31); });
+        builders.emplace_back([this, n](Scenario& scenario) { BuildPriorityTest(scenario, n & 31); });
+        builders.emplace_back([this, n](Scenario& scenario) { BuildBigPriorityTest(scenario, (n & 7) + 1); });
+        builders.emplace_back([this](Scenario& scenario) { BuildTimeBackwardsTest(scenario); });
+        builders.emplace_back([this](Scenario& scenario) { BuildWeirdRequestsTest(scenario); });
     }
     // Randomly shuffle all those functions.
     std::shuffle(builders.begin(), builders.end(), g_insecure_rand_ctx);
@@ -730,6 +743,8 @@ void TestInterleavedScenarios()
 
 }  // namespace
 
+BOOST_FIXTURE_TEST_SUITE(txrequest_tests, TxRequestTest)
+
 BOOST_AUTO_TEST_CASE(TxRequestTest)
 {
     for (int i = 0; i < 5; ++i) {
diff --git a/src/test/versionbits_tests.cpp b/src/test/versionbits_tests.cpp
index 896840b0f3..42730d40c4 100644
--- a/src/test/versionbits_tests.cpp
+++ b/src/test/versionbits_tests.cpp
@@ -256,8 +256,9 @@ BOOST_AUTO_TEST_CASE(versionbits_test)
     }
 }
 
+struct BlockVersionTest : BasicTestingSetup {
 /** Check that ComputeBlockVersion will set the appropriate bit correctly */
-static void check_computeblockversion(VersionBitsCache& versionbitscache, const Consensus::Params& params, Consensus::DeploymentPos dep)
+void check_computeblockversion(VersionBitsCache& versionbitscache, const Consensus::Params& params, Consensus::DeploymentPos dep)
 {
     // Clear the cache every time
     versionbitscache.Clear();
@@ -412,8 +413,9 @@ static void check_computeblockversion(VersionBitsCache& versionbitscache, const
     // Check that we don't signal after activation
     BOOST_CHECK_EQUAL(versionbitscache.ComputeBlockVersion(lastBlock, params) & (1 << bit), 0);
 }
+}; // struct BlockVersionTest
 
-BOOST_AUTO_TEST_CASE(versionbits_computeblockversion)
+BOOST_FIXTURE_TEST_CASE(versionbits_computeblockversion, BlockVersionTest)
 {
     VersionBitsCache vbcache;