Added testing with doctest

src/gz-util.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+/**
+ * @file
+ * @brief Includes all headers from this library
+ * @details
+ *  Not recommended - this is mainly used for testing the library.
+ */
+
+#include "settings_manager.hpp"
+#include "log.hpp"
+#include "string/conversion.hpp"
+#include "string/utility.hpp"
+
+#include "regex.hpp"
+#include "concepts.hpp"
+#include "container/queue.hpp"
+#include "container/ringbuffer.hpp"

src/testing.cpp

@@ -0,0 +1,11 @@
+#ifdef GZ_UTIL_TESTING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include <doctest/doctest.h>
+#include "gz-util.hpp"
+#endif
+
+
+/**
+ * @file
+ * @brief Includes all headers and implements `main` for testing
+ */