diff --git a/src/yycc/macro/stl_detector.hpp b/src/yycc/macro/stl_detector.hpp
index cfddda9..c7c616c 100644
--- a/src/yycc/macro/stl_detector.hpp
+++ b/src/yycc/macro/stl_detector.hpp
@@ -17,9 +17,9 @@ namespace yycc::macro::stl {
 
     /// @brief The STL implementation kind.
     enum class StlKind {
-        MSSTL,    ///< Microsoft STL
-        GNUSTL,   ///< GNU STL
-        CLANGSTL  ///< Clang STL
+        MsStl,    ///< Microsoft STL
+        GnuStl,   ///< GNU STL
+        ClangStl  ///< Clang STL
     };
 
     /**
@@ -28,11 +28,11 @@ namespace yycc::macro::stl {
      */
     inline constexpr StlKind get_stl() {
 #if defined(YYCC_STL_MSSTL)
-        return StlKind::MSSTL;
+        return StlKind::MsStl;
 #elif defined(YYCC_STL_GNUSTL)
-        return StlKind::GNUSTL;
+        return StlKind::GnuStl;
 #else
-        return StlKind::CLANGSTL;
+        return StlKind::ClangStl;
 #endif
     }
 
diff --git a/testbench/CMakeLists.txt b/testbench/CMakeLists.txt
index 9a731b6..582f773 100644
--- a/testbench/CMakeLists.txt
+++ b/testbench/CMakeLists.txt
@@ -7,6 +7,11 @@ PRIVATE
 
     main.cpp
     yycc/macro/version_cmp.cpp
+    yycc/macro/os_detector.cpp
+    yycc/macro/compiler_detector.cpp
+    yycc/macro/endian_detector.cpp
+    yycc/macro/ptr_size_detector.cpp
+    yycc/macro/stl_detector.cpp
     yycc/flag_enum.cpp
     yycc/constraint.cpp
     yycc/constraint/builder.cpp
diff --git a/testbench/yycc/macro/compiler_detector.cpp b/testbench/yycc/macro/compiler_detector.cpp
new file mode 100644
index 0000000..0e41e67
--- /dev/null
+++ b/testbench/yycc/macro/compiler_detector.cpp
@@ -0,0 +1,20 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/macro/compiler_detector.hpp>
+
+#define COMPILER ::yycc::macro::compiler
+
+namespace yycctest::macro::compiler {
+
+    TEST(MacroCompiler, Main) {
+        auto rv = COMPILER::get_compiler();
+#if defined(YYCC_CC_MSVC)
+        EXPECT_EQ(rv, COMPILER::CompilerKind::Msvc);
+#elif defined(YYCC_CC_GCC)
+        EXPECT_EQ(rv, COMPILER::CompilerKind::Gcc);
+#else
+        EXPECT_EQ(rv, COMPILER::CompilerKind::Clang);
+#endif
+    }
+
+} // namespace yycctest::macro::compiler
diff --git a/testbench/yycc/macro/endian_detector.cpp b/testbench/yycc/macro/endian_detector.cpp
new file mode 100644
index 0000000..dda289f
--- /dev/null
+++ b/testbench/yycc/macro/endian_detector.cpp
@@ -0,0 +1,18 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/macro/endian_detector.hpp>
+
+#define ENDIAN ::yycc::macro::endian
+
+namespace yycctest::macro::endian {
+
+    TEST(MacroEndian, Main) {
+        auto rv = ENDIAN::get_endian();
+#if defined(YYCC_ENDIAN_LITTLE)
+        EXPECT_EQ(rv, ENDIAN::EndianKind::Little);
+#else
+        EXPECT_EQ(rv, ENDIAN::EndianKind::Big);
+#endif
+    }
+
+} // namespace yycctest::macro::endian
diff --git a/testbench/yycc/macro/os_detector.cpp b/testbench/yycc/macro/os_detector.cpp
new file mode 100644
index 0000000..9b7fecf
--- /dev/null
+++ b/testbench/yycc/macro/os_detector.cpp
@@ -0,0 +1,20 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/macro/os_detector.hpp>
+
+#define OS ::yycc::macro::os
+
+namespace yycctest::macro::os {
+
+    TEST(MacroOs, Main) {
+        auto rv = OS::get_os();
+#if defined(YYCC_OS_WINDOWS)
+        EXPECT_EQ(rv, OS::OsKind::Windows);
+#elif defined(YYCC_OS_LINUX)
+        EXPECT_EQ(rv, OS::OsKind::Linux);
+#else
+        EXPECT_EQ(rv, OS::OsKind::MacOs);
+#endif
+    }
+
+} // namespace yycctest::macro::os
diff --git a/testbench/yycc/macro/ptr_size_detector.cpp b/testbench/yycc/macro/ptr_size_detector.cpp
new file mode 100644
index 0000000..ce313c2
--- /dev/null
+++ b/testbench/yycc/macro/ptr_size_detector.cpp
@@ -0,0 +1,18 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/macro/ptr_size_detector.hpp>
+
+#define PTR_SIZE ::yycc::macro::ptr_size
+
+namespace yycctest::macro::ptr_size {
+
+    TEST(MacroPtrSize, Main) {
+        auto rv = PTR_SIZE::get_ptr_size();
+#if defined(YYCC_PTRSIZE_32)
+        EXPECT_EQ(rv, PTR_SIZE::PtrSizeKind::Bits32);
+#else
+        EXPECT_EQ(rv, PTR_SIZE::PtrSizeKind::Bits64);
+#endif
+    }
+
+} // namespace yycctest::macro::ptr_size
diff --git a/testbench/yycc/macro/stl_detector.cpp b/testbench/yycc/macro/stl_detector.cpp
new file mode 100644
index 0000000..b08c57c
--- /dev/null
+++ b/testbench/yycc/macro/stl_detector.cpp
@@ -0,0 +1,20 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/macro/stl_detector.hpp>
+
+#define STL ::yycc::macro::stl
+
+namespace yycctest::macro::stl {
+
+    TEST(MacroStl, Main) {
+        auto rv = STL::get_stl();
+#if defined(YYCC_STL_MSSTL)
+        EXPECT_EQ(rv, STL::StlKind::MsStl);
+#elif defined(YYCC_STL_GNUSTL)
+        EXPECT_EQ(rv, STL::StlKind::GnuStl);
+#else
+        EXPECT_EQ(rv, STL::StlKind::ClangStl);
+#endif
+    }
+
+} // namespace yycctest::macro::stl