TetraIF migration and Unittest Implementation for it

Entire-Checkpoint: 14d1fef0cf36

qt6-after/qt6-migrated-legatus/TetraIF/unittest_main.cpp

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+/**
+ * @file unittest_main.cpp
+ * @brief Shared entry point for the TetraIF unit test executables.
+ *
+ * GTest::gtest_main provides a main() that neither creates a QCoreApplication
+ * nor bootstraps the NGL root logger. The classes under test do both: they take
+ * a logger reference in their constructor, and NGL::NGLLoggerBootstrap throws
+ * NotCreatedError when the root logger has not been created yet.
+ *
+ * This mirrors tests/gtest_qt_main.cpp, minus the QApplication - none of the
+ * TetraIF unit tests touch widgets.
+ */
+
+#include <gtest/gtest.h>
+
+#include <NGLLogger/NGLLoggerBootstrap.h>
+#include <QtCore/QCoreApplication>
+
+int main(int argc, char **argv)
+{
+  QCoreApplication app(argc, argv);
+
+  NGL::NGLLoggerBootstrap::createNGLRootLogger(QString(), true, QString(), /*quiet=*/true);
+
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}