test: Remove duplicate NodeContext hacks

Qt tests currently are currently using two NodeContext structs at the same
time, one in interfaces::NodeImpl::m_context, and the other in
BasicTestingSetup::m_node, and the tests have hacks transferring state between
them.

Fix this by getting rid of the NodeImpl::m_context struct and making it a
pointer. This way a common BitcoinApplication object can be used for all qt
tests, but they can still have their own testing setups.

Non-test code is changing but non-test behavior is still the same as before.

Motivation for this PR is to be able to remove the
"std::move(test.m_node.connman)" and mempool hacks for swapping individual
NodeContext members in Qt tests, because followup PR #19099 adds yet another
member (wallet_client) that needs to be swapped. After this change, the whole
NodeContext struct can be swapped instead of individual members, so the
workarounds are less fragile and invasive.

3 files changed, 5 insertions, 3 deletions

diff --git a/src/qt/test/addressbooktests.cpp b/src/qt/test/addressbooktests.cpp
index 9347ff9e42..035c8196bc 100644
--- a/src/qt/test/addressbooktests.cpp
+++ b/src/qt/test/addressbooktests.cpp
@@ -18,6 +18,7 @@
 #include <key.h>
 #include <key_io.h>
 #include <wallet/wallet.h>
+#include <walletinitinterface.h>
 
 #include <QApplication>
 #include <QTimer>
@@ -59,6 +60,7 @@ void EditAddressAndSubmit(
 void TestAddAddressesToSendBook(interfaces::Node& node)
 {
     TestChain100Setup test;
+    node.setContext(&test.m_node);
     std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(node.context()->chain.get(), WalletLocation(), CreateMockWalletDatabase());
     wallet->SetupLegacyScriptPubKeyMan();
     bool firstRun;
diff --git a/src/qt/test/test_main.cpp b/src/qt/test/test_main.cpp
index 12efca2503..031913bd02 100644
--- a/src/qt/test/test_main.cpp
+++ b/src/qt/test/test_main.cpp
@@ -52,7 +52,8 @@ int main(int argc, char* argv[])
         BasicTestingSetup dummy{CBaseChainParams::REGTEST};
     }
 
-    std::unique_ptr<interfaces::Node> node = interfaces::MakeNode();
+    NodeContext node_context;
+    std::unique_ptr<interfaces::Node> node = interfaces::MakeNode(&node_context);
 
     bool fInvalid = false;
 
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
index 6648029bae..475fd589af 100644
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -138,8 +138,7 @@ void TestGUI(interfaces::Node& node)
     for (int i = 0; i < 5; ++i) {
         test.CreateAndProcessBlock({}, GetScriptForRawPubKey(test.coinbaseKey.GetPubKey()));
     }
-    node.context()->connman = std::move(test.m_node.connman);
-    node.context()->mempool = std::move(test.m_node.mempool);
+    node.setContext(&test.m_node);
     std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(node.context()->chain.get(), WalletLocation(), CreateMockWalletDatabase());
     bool firstRun;
     wallet->LoadWallet(firstRun);