Merge #839: qt6, test: Handle deprecated code

5625840 qt6, test: Handle deprecated `QVERIFY_EXCEPTION_THROWN` (Hennadii Stepanov)
cb750b4 qt6, test: Use `qWarning()` instead of `QWARN()` macro (Hennadii Stepanov)

Pull request description:

  Split from bitcoin/bitcoin#30997.

  This PR ensures compatibility across all supported Qt versions.

  ---

  This PR can be tested on macOS using the first commit from bitcoin/bitcoin#30997 and Homebrew's `qt` package.

ACKs for top commit:
  promag:
    Code review ACK 5625840.
  Sjors:
    tACK 5625840

Tree-SHA512: e7307eaf0027c6addc9481ba91ed31b81554ffb0d2ba77938e68915c9d490a7962e55a330f97ea31d49bbfb30f92773c3af3afc867a4215d00752405d7e3bb6d

src/qt/test/addressbooktests.cpp

@@ -222,8 +222,8 @@ void AddressBookTests::addressBookTests()
         // framework when it tries to look up unimplemented cocoa functions,
         // and fails to handle returned nulls
         // (https://bugreports.qt.io/browse/QTBUG-49686).
-        QWARN("Skipping AddressBookTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
-              "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.");
+        qWarning() << "Skipping AddressBookTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
+                      "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.";
         return;
     }
 #endif

src/qt/test/apptests.cpp

@@ -60,8 +60,8 @@ void AppTests::appTests()
         // framework when it tries to look up unimplemented cocoa functions,
         // and fails to handle returned nulls
         // (https://bugreports.qt.io/browse/QTBUG-49686).
-        QWARN("Skipping AppTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
-              "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.");
+        qWarning() << "Skipping AppTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
+                      "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.";
         return;
     }
 #endif

src/qt/test/rpcnestedtests.cpp

@@ -127,6 +127,11 @@ void RPCNestedTests::rpcNestedTests()
     RPCConsole::RPCExecuteCommandLine(m_node, result, "rpcNestedTest(   abc   ,   cba )");
     QVERIFY(result == "[\"abc\",\"cba\"]");
 
+// Handle deprecated macro, can be removed once minimum Qt is at least 6.3.0.
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
+#undef QVERIFY_EXCEPTION_THROWN
+#define QVERIFY_EXCEPTION_THROWN(expression, exceptiontype) QVERIFY_THROWS_EXCEPTION(exceptiontype, expression)
+#endif
     QVERIFY_EXCEPTION_THROWN(RPCConsole::RPCExecuteCommandLine(m_node, result, "getblockchaininfo() .\n"), std::runtime_error); //invalid syntax
     QVERIFY_EXCEPTION_THROWN(RPCConsole::RPCExecuteCommandLine(m_node, result, "getblockchaininfo() getblockchaininfo()"), std::runtime_error); //invalid syntax
     RPCConsole::RPCExecuteCommandLine(m_node, result, "getblockchaininfo("); //tolerate non closing brackets if we have no arguments

src/qt/test/test_main.cpp

@@ -58,7 +58,7 @@ int main(int argc, char* argv[])
     gArgs.ForceSetArg("-natpmp", "0");
 
     std::string error;
-    if (!gArgs.ReadConfigFiles(error, true)) QWARN(error.c_str());
+    if (!gArgs.ReadConfigFiles(error, true)) qWarning() << error.c_str();
 
     // Prefer the "minimal" platform for the test instead of the normal default
     // platform ("xcb", "windows", or "cocoa") so tests can't unintentionally

src/qt/test/wallettests.cpp

@@ -475,8 +475,8 @@ void WalletTests::walletTests()
         // framework when it tries to look up unimplemented cocoa functions,
         // and fails to handle returned nulls
         // (https://bugreports.qt.io/browse/QTBUG-49686).
-        QWARN("Skipping WalletTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
-              "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.");
+        qWarning() << "Skipping WalletTests on mac build with 'minimal' platform set due to Qt bugs. To run AppTests, invoke "
+                      "with 'QT_QPA_PLATFORM=cocoa test_bitcoin-qt' on mac, or else use a linux or windows build.";
         return;
     }
 #endif