Retain startup diagnostics for the desktop edit integration test

tools/chatgui/tests/test_group_edits.cpp

@@ -12,6 +12,7 @@
 #include <QFile>
 #include <QTextEdit>
 #include <QMenu>
+#include <QScopeGuard>
 #include <future>
 #include <memory>
 extern "C" {
@@ -36,13 +37,16 @@ class GroupEditTest : public QObject {
 private slots:
     void editThroughMenuAndCore() {
         debug_config_init(); gui_bridge_init(); QTemporaryDir directory; QVERIFY(directory.isValid());
+        directory.setAutoRemove(false);
+        auto diagnostics = qScopeGuard([&] { directory.setAutoRemove(!QTest::currentTestFailed()); });
         const auto configPath = directory.filePath("node.cfg"); QFile config(configPath); QVERIFY(config.open(QIODevice::WriteOnly));
         const QByteArray settings = "[global]\ntun_enabled=no\n[server:local]\naddr=127.0.0.1:0\ntype=private\n"
             "[chatserver]\ngroup_autoconnect=0\nstorage_autoload=0\nlocal_invites_enabled=0\nlocal_broadcasts_enabled=0\n"
             "[ntp]\nenabled=no\n";
         QCOMPARE(config.write(settings), settings.size()); config.close(); DbManager db;
         MainWindow window(nullptr, &db, configPath, directory.filePath("db"), directory.filePath("edit.log"), "warn", "chat_sync=debug");
-        window.show(); QVERIFY2(window.utunNode()->isRunning(), qPrintable(window.utunNode()->startupError()));
+        window.show(); QFile log(directory.filePath("edit.log")); log.open(QIODevice::ReadOnly);
+        QVERIFY2(window.utunNode()->isRunning(), qPrintable(window.utunNode()->startupError() + "\n" + log.readAll()));
         QTRY_VERIFY_WITH_TIMEOUT(db.isOpen(), 3000);
         QCOMPARE(inCore([](UTUN_INSTANCE* inst) { chat_core_create_channel_auto(inst, "Editable"); return 0; }), 0);
         QTRY_COMPARE(db.getChannels().size(), 1); const auto channel = db.getChannels().first().channelId;