initial basic utils

untests/sources/common.hpp

@@ -8,3 +8,32 @@
 
 #include "../catch/catch.hpp"
 #include <enduro2d/enduro2d.hpp>
+
+namespace e2d_untests
+{
+    using namespace e2d;
+
+    template < typename TimeTag >
+    class verbose_profiler : noncopyable {
+    public:
+        verbose_profiler(const str& desc)
+        : desc_(desc) {
+            begin_ = time::now<TimeTag>();
+        }
+
+        template < typename T >
+        void done(const T& result) const {
+            const auto end = time::now<TimeTag>();
+            std::printf(
+                "result: %s, time: %s, desc: %s\n",
+                std::to_string(result).c_str(),
+                std::to_string((end - begin_).value).c_str(),
+                desc_.c_str());
+        }
+    private:
+        str desc_;
+        unit<i64, TimeTag> begin_;
+    };
+    using verbose_profiler_us = verbose_profiler<microseconds_tag>;
+    using verbose_profiler_ms = verbose_profiler<milliseconds_tag>;
+}