refactor: rename testbench to test.

- rename testbench to test.
- add benchmark for future development.

test/yycc/windows/console.cpp

@@ -0,0 +1,17 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/windows/console.hpp>
+
+#define CONSOLE ::yycc::windows::console
+
+namespace yycctest::windows::console {
+#if defined(YYCC_OS_WINDOWS) && defined(YYCC_STL_MSSTL)
+
+    TEST(WindowsConsole, ColorfulConsole) {
+        // Set colorful console should always be success.
+        auto rv = CONSOLE::colorful_console();
+        EXPECT_TRUE(rv.has_value());
+    }
+
+#endif
+}