diff --git a/include/libconcur/concurrent.h b/include/libconcur/concurrent.h
index f759533..87a9d12 100644
--- a/include/libconcur/concurrent.h
+++ b/include/libconcur/concurrent.h
@@ -88,7 +88,7 @@ struct producer<trans::unicast, relation::single> {
   template <typename T, typename C, typename U, 
             typename = is_context<C>,
             typename = is_convertible<C, context_impl>>
-  static bool enqueue(::LIBIMP_::span<element<T>> elems, C &ctx, U &&src) noexcept {
+  static bool enqueue(::LIBIMP::span<element<T>> elems, C &ctx, U &&src) noexcept {
     auto w_idx = ctx.w_idx;
     auto w_cur = trunc_index(ctx, w_idx);
     auto &elem = elems[w_cur];
@@ -119,7 +119,7 @@ struct producer<trans::unicast, relation::multi> {
   template <typename T, typename C, typename U, 
             typename = is_context<C>,
             typename = is_convertible<C, context_impl>>
-  static bool enqueue(::LIBIMP_::span<element<T>> elems, C &ctx, U &&src) noexcept {
+  static bool enqueue(::LIBIMP::span<element<T>> elems, C &ctx, U &&src) noexcept {
     auto w_idx = ctx.w_idx.load(std::memory_order_acquire);
     for (;;) {
       auto w_cur = trunc_index(ctx, w_idx);
@@ -154,7 +154,7 @@ struct consumer<trans::unicast, relation::single> {
   template <typename T, typename C, typename U, 
             typename = is_context<C>,
             typename = is_convertible<C, context_impl>>
-  static bool dequeue(::LIBIMP_::span<element<T>> elems, C &ctx, U &des) noexcept {
+  static bool dequeue(::LIBIMP::span<element<T>> elems, C &ctx, U &des) noexcept {
     auto r_idx = ctx.r_idx;
     auto r_cur = trunc_index(ctx, r_idx);
     auto &elem = elems[r_cur];
@@ -184,7 +184,7 @@ struct consumer<trans::unicast, relation::multi> {
   template <typename T, typename C, typename U, 
             typename = is_context<C>,
             typename = is_convertible<C, context_impl>>
-  static bool dequeue(::LIBIMP_::span<element<T>> elems, C &ctx, U &des) noexcept {
+  static bool dequeue(::LIBIMP::span<element<T>> elems, C &ctx, U &des) noexcept {
     auto r_idx = ctx.r_idx.load(std::memory_order_acquire);
     for (;;) {
       auto r_cur = trunc_index(ctx, r_idx);
@@ -250,7 +250,7 @@ struct prod_cons : producer<TransModT, ProdModT>
       : circ_size(cs) {}
 
     template <typename T>
-    constexpr context(::LIBIMP_::span<element<T>> elems) noexcept
+    constexpr context(::LIBIMP::span<element<T>> elems) noexcept
       : circ_size(static_cast<index_t>(elems.size())) {}
 
     constexpr bool valid() const noexcept {
diff --git a/include/libconcur/def.h b/include/libconcur/def.h
index 83dd1bc..d520012 100644
--- a/include/libconcur/def.h
+++ b/include/libconcur/def.h
@@ -11,8 +11,8 @@
 
 #include "libimp/detect_plat.h"
 
-#define LIBCONCUR_               concur
-#define LIBCONCUR_NAMESPACE_BEG_ namespace LIBCONCUR_ {
+#define LIBCONCUR                concur
+#define LIBCONCUR_NAMESPACE_BEG_ namespace LIBCONCUR {
 #define LIBCONCUR_NAMESPACE_END_ }
 
 LIBCONCUR_NAMESPACE_BEG_
diff --git a/include/libimp/byte.h b/include/libimp/byte.h
index dbf1f7c..aa0c405 100644
--- a/include/libimp/byte.h
+++ b/include/libimp/byte.h
@@ -158,12 +158,12 @@ U *byte_cast(byte const *p) noexcept {
 LIBIMP_NAMESPACE_END_
 
 template <>
-struct fmt::formatter<::LIBIMP_::byte> {
+struct fmt::formatter<::LIBIMP::byte> {
   constexpr auto parse(format_parse_context& ctx) const {
     return ctx.end();
   }
   template <typename FormatContext>
-  auto format(::LIBIMP_::byte b, FormatContext &ctx) {
+  auto format(::LIBIMP::byte b, FormatContext &ctx) {
     return format_to(ctx.out(), "{:#04x}", static_cast<std::uint8_t>(b));
   }
 };
diff --git a/include/libimp/def.h b/include/libimp/def.h
index 4348050..8fb2505 100644
--- a/include/libimp/def.h
+++ b/include/libimp/def.h
@@ -9,8 +9,8 @@
 #include <cstddef>
 #include <cstdint>
 
-#define LIBIMP_               imp
-#define LIBIMP_NAMESPACE_BEG_ namespace LIBIMP_ {
+#define LIBIMP                imp
+#define LIBIMP_NAMESPACE_BEG_ namespace LIBIMP {
 #define LIBIMP_NAMESPACE_END_ }
 
 LIBIMP_NAMESPACE_BEG_
diff --git a/include/libimp/generic.h b/include/libimp/generic.h
index 2f11b6c..643069a 100644
--- a/include/libimp/generic.h
+++ b/include/libimp/generic.h
@@ -1,7 +1,7 @@
 /**
  * @file libimp/generic.h
  * @author mutouyun (orz@orzz.org)
- * @brief Tools for generic programming
+ * @brief Tools for generic programming.
  * @date 2022-03-01
  */
 #pragma once
diff --git a/include/libimp/log.h b/include/libimp/log.h
index df6bc1b..dbb8555 100644
--- a/include/libimp/log.h
+++ b/include/libimp/log.h
@@ -1,7 +1,7 @@
 /**
  * @file libimp/log.h
  * @author mutouyun (orz@orzz.org)
- * @brief Simple log output component
+ * @brief Simple log output component.
  * @date 2022-05-22
  */
 #pragma once
@@ -198,4 +198,4 @@ public:
 } // namespace log
 LIBIMP_NAMESPACE_END_
 
-#define LIBIMP_LOG_(...) ::LIBIMP_::log::grip log {__func__, __VA_ARGS__}
\ No newline at end of file
+#define LIBIMP_LOG_(...) ::LIBIMP::log::grip log {__func__, __VA_ARGS__}
\ No newline at end of file
diff --git a/include/libimp/result.h b/include/libimp/result.h
index d4c3bb2..6037b30 100644
--- a/include/libimp/result.h
+++ b/include/libimp/result.h
@@ -160,22 +160,22 @@ public:
 LIBIMP_NAMESPACE_END_
 
 template <typename T, typename D>
-struct fmt::formatter<::LIBIMP_::result<T, D>> {
+struct fmt::formatter<::LIBIMP::result<T, D>> {
   constexpr auto parse(format_parse_context& ctx) const {
     return ctx.end();
   }
   template <typename FormatContext>
-  auto format(::LIBIMP_::result<T, D> r, FormatContext &ctx) {
-    return format_to(::LIBIMP_::result<T, D>::default_traits_t::format(r, 
+  auto format(::LIBIMP::result<T, D> r, FormatContext &ctx) {
+    return format_to(::LIBIMP::result<T, D>::default_traits_t::format(r, 
            format_to(ctx.out(), "[{}, value = ", r ? "succ" : "fail")), "]");
   }
 };
 
 template <>
-struct fmt::formatter<::LIBIMP_::result_code>
-          : formatter<::LIBIMP_::result<::LIBIMP_::result_type>> {
+struct fmt::formatter<::LIBIMP::result_code>
+          : formatter<::LIBIMP::result<::LIBIMP::result_type>> {
   template <typename FormatContext>
-  auto format(::LIBIMP_::result_code r, FormatContext &ctx) {
+  auto format(::LIBIMP::result_code r, FormatContext &ctx) {
     return format_to(ctx.out(), "[{}, value = {}]", (r ? "succ" : "fail"), *r);
   }
 };
diff --git a/include/libimp/span.h b/include/libimp/span.h
index 2511d29..1e61326 100644
--- a/include/libimp/span.h
+++ b/include/libimp/span.h
@@ -281,12 +281,12 @@ inline auto make_span(std::string const &str) noexcept -> span<char const> {
 LIBIMP_NAMESPACE_END_
 
 template <typename T>
-struct fmt::formatter<::LIBIMP_::span<T>> {
+struct fmt::formatter<::LIBIMP::span<T>> {
   constexpr auto parse(format_parse_context& ctx) const {
     return ctx.end();
   }
   template <typename FormatContext>
-  auto format(::LIBIMP_::span<T> s, FormatContext &ctx) {
+  auto format(::LIBIMP::span<T> s, FormatContext &ctx) {
     if (s.empty()) {
       return format_to(ctx.out(), "");
     }
diff --git a/include/libimp/system.h b/include/libimp/system.h
index dbff599..435d257 100644
--- a/include/libimp/system.h
+++ b/include/libimp/system.h
@@ -67,10 +67,10 @@ LIBIMP_EXPORT result<std::int64_t> conf(info) noexcept;
 LIBIMP_NAMESPACE_END_
 
 template <>
-struct fmt::formatter<::LIBIMP_::sys::error>
+struct fmt::formatter<::LIBIMP::sys::error>
           : formatter<std::string> {
   template <typename FormatContext>
-  auto format(::LIBIMP_::sys::error r, FormatContext &ctx) {
-    return format_to(ctx.out(), ::LIBIMP_::sys::error_msg(r.code()));
+  auto format(::LIBIMP::sys::error r, FormatContext &ctx) {
+    return format_to(ctx.out(), ::LIBIMP::sys::error_msg(r.code()));
   }
 };
diff --git a/include/libipc/def.h b/include/libipc/def.h
index 0ad7085..3b121d1 100755
--- a/include/libipc/def.h
+++ b/include/libipc/def.h
@@ -9,8 +9,8 @@
 #include <cstddef>
 #include <cstdint>
 
-#define LIBIPC_               ipc
-#define LIBIPC_NAMESPACE_BEG_ namespace LIBIPC_ {
+#define LIBIPC                ipc
+#define LIBIPC_NAMESPACE_BEG_ namespace LIBIPC {
 #define LIBIPC_NAMESPACE_END_ }
 
 LIBIPC_NAMESPACE_BEG_
diff --git a/include/libipc/shm.h b/include/libipc/shm.h
index 607cef0..ba87e33 100644
--- a/include/libipc/shm.h
+++ b/include/libipc/shm.h
@@ -20,12 +20,12 @@ struct shm_handle;
 using shm_t = shm_handle *;
 
 /// @brief Create a new shared memory handle with a name of the shared memory file.
-LIBIMP_EXPORT ::LIBIMP_::result<shm_t> shm_open(std::string name, 
+LIBIMP_EXPORT ::LIBIMP::result<shm_t> shm_open(std::string name, 
                                                 std::size_t size = 0,
                                                 mode::type = mode::create | mode::open) noexcept;
 
 /// @brief Close the shared memory handle.
-LIBIMP_EXPORT ::LIBIMP_::result_code shm_close(shm_t) noexcept;
+LIBIMP_EXPORT ::LIBIMP::result_code shm_close(shm_t) noexcept;
 
 /// @brief Gets a memory pointer based on the shared memory handle.
 /// @return nullptr on failure.
@@ -37,7 +37,7 @@ LIBIMP_EXPORT std::size_t shm_size(shm_t) noexcept;
 
 /// @brief Sets the memory size based on the shared memory handle.
 /// @remark [TBD]
-LIBIMP_EXPORT ::LIBIMP_::result_code shm_size(shm_t, std::size_t) noexcept;
+LIBIMP_EXPORT ::LIBIMP::result_code shm_size(shm_t, std::size_t) noexcept;
 
 /// @brief Gets the name of the shared memory file based on the shared memory handle.
 /// @return empty string on failure.
diff --git a/include/libpmr/allocator.h b/include/libpmr/allocator.h
index a7019e2..c6f5875 100644
--- a/include/libpmr/allocator.h
+++ b/include/libpmr/allocator.h
@@ -85,7 +85,7 @@ class LIBIMP_EXPORT allocator {
   };
 
   using void_holder_type = holder_memory_resource<void>;
-  alignas(void_holder_type) std::array<::LIBIMP_::byte, sizeof(void_holder_type)> holder_;
+  alignas(void_holder_type) std::array<::LIBIMP::byte, sizeof(void_holder_type)> holder_;
 
   holder_base &      get_holder() noexcept;
   holder_base const &get_holder() const noexcept;
@@ -105,7 +105,7 @@ public:
   template <typename T, typename = is_memory_resource<T>>
   allocator(T *p_mr) : allocator() {
     if (p_mr == nullptr) return;
-    ::LIBIMP_::construct<holder_memory_resource<T>>(holder_.data(), p_mr);
+    ::LIBIMP::construct<holder_memory_resource<T>>(holder_.data(), p_mr);
   }
 
   void swap(allocator &other) noexcept;
diff --git a/include/libpmr/def.h b/include/libpmr/def.h
index adb9544..2b3ef7e 100644
--- a/include/libpmr/def.h
+++ b/include/libpmr/def.h
@@ -6,8 +6,8 @@
  */
 #pragma once
 
-#define LIBPMR_               pmr
-#define LIBPMR_NAMESPACE_BEG_ namespace LIBPMR_ {
+#define LIBPMR                pmr
+#define LIBPMR_NAMESPACE_BEG_ namespace LIBPMR {
 #define LIBPMR_NAMESPACE_END_ }
 
 LIBPMR_NAMESPACE_BEG_
diff --git a/src/libimp/codecvt.cpp b/src/libimp/codecvt.cpp
index 96ee8ca..91a0cfd 100644
--- a/src/libimp/codecvt.cpp
+++ b/src/libimp/codecvt.cpp
@@ -1,10 +1,10 @@
+#include "libimp/codecvt.h"
 
 #include <algorithm>
 #include <type_traits>
 #include <cstring>
 #include <cstdint>
 
-#include "libimp/codecvt.h"
 #include "libimp/log.h"
 #include "libimp/detect_plat.h"
 
diff --git a/src/libimp/log.cpp b/src/libimp/log.cpp
index c12043e..4bfc2f0 100644
--- a/src/libimp/log.cpp
+++ b/src/libimp/log.cpp
@@ -1,11 +1,10 @@
+#include "libimp/log.h"
 
 #include <utility>
 #include <cstdio>
 
 #include "fmt/chrono.h"
 
-#include "libimp/log.h"
-
 LIBIMP_NAMESPACE_BEG_
 namespace log {
 
diff --git a/src/libipc/platform/posix/shm_impl.h b/src/libipc/platform/posix/shm_impl.h
index 7673200..366f53b 100644
--- a/src/libipc/platform/posix/shm_impl.h
+++ b/src/libipc/platform/posix/shm_impl.h
@@ -23,7 +23,7 @@
 #include "def.h"
 
 LIBIPC_NAMESPACE_BEG_
-using namespace ::LIBIMP_;
+using namespace ::LIBIMP;
 
 struct shm_handle {
   std::string file;
diff --git a/src/libipc/platform/win/get_sa.h b/src/libipc/platform/win/get_sa.h
index 65c2edd..05887ee 100644
--- a/src/libipc/platform/win/get_sa.h
+++ b/src/libipc/platform/win/get_sa.h
@@ -27,7 +27,7 @@ inline LPSECURITY_ATTRIBUTES get_sa() {
     bool succ_ = false;
 
     initiator() {
-      using namespace ::LIBIMP_;
+      using namespace ::LIBIMP;
       log::grip log {"get_sa"};
       if (!::InitializeSecurityDescriptor(&sd_, SECURITY_DESCRIPTOR_REVISION)) {
         log.error("failed: InitializeSecurityDescriptor(SECURITY_DESCRIPTOR_REVISION). error = {}", sys::error());
diff --git a/src/libipc/platform/win/mmap_impl.h b/src/libipc/platform/win/mmap_impl.h
index f2cf929..e7392ce 100644
--- a/src/libipc/platform/win/mmap_impl.h
+++ b/src/libipc/platform/win/mmap_impl.h
@@ -18,7 +18,7 @@
 #include "to_tchar.h"
 
 LIBIPC_NAMESPACE_BEG_
-using namespace ::LIBIMP_;
+using namespace ::LIBIMP;
 
 struct shm_handle {
   std::string file;
diff --git a/src/libipc/platform/win/shm_impl.h b/src/libipc/platform/win/shm_impl.h
index 56059f5..d601908 100644
--- a/src/libipc/platform/win/shm_impl.h
+++ b/src/libipc/platform/win/shm_impl.h
@@ -15,7 +15,7 @@
 #include "mmap_impl.h"
 
 LIBIPC_NAMESPACE_BEG_
-using namespace ::LIBIMP_;
+using namespace ::LIBIMP;
 
 result<shm_t> shm_open(std::string name, std::size_t size, mode::type type) noexcept {
   LIBIMP_LOG_();
diff --git a/src/libipc/platform/win/to_tchar.h b/src/libipc/platform/win/to_tchar.h
index 4f1d942..a93c3b5 100644
--- a/src/libipc/platform/win/to_tchar.h
+++ b/src/libipc/platform/win/to_tchar.h
@@ -19,7 +19,7 @@ using tstring = std::basic_string<TCHAR>;
 
 inline tstring to_tstring(std::string const &str) {
   tstring des;
-  ::LIBIMP_::cvt_sstr(str, des);
+  ::LIBIMP::cvt_sstr(str, des);
   return des;
 }
 
diff --git a/src/libpmr/allocator.cpp b/src/libpmr/allocator.cpp
index 5254b0b..c83147e 100644
--- a/src/libpmr/allocator.cpp
+++ b/src/libpmr/allocator.cpp
@@ -14,22 +14,22 @@ allocator::holder_base const &allocator::get_holder() const noexcept {
 }
 
 allocator::allocator() noexcept {
-  ::LIBIMP_::construct<holder_null>(holder_.data());
+  ::LIBIMP::construct<holder_null>(holder_.data());
 }
 
 allocator::~allocator() noexcept {
-  ::LIBIMP_::destroy(&get_holder());
+  ::LIBIMP::destroy(&get_holder());
 }
 
 allocator::allocator(allocator &&other) noexcept
   : allocator(other) /*copy*/ {
-  ::LIBIMP_::construct<holder_null>(other.holder_.data());
+  ::LIBIMP::construct<holder_null>(other.holder_.data());
 }
 
 allocator &allocator::operator=(allocator &&other) & noexcept {
   if (this == &other) return *this;
   this->holder_ = other.holder_;
-  ::LIBIMP_::construct<holder_null>(other.holder_.data());
+  ::LIBIMP::construct<holder_null>(other.holder_.data());
   return *this;
 }
 
diff --git a/src/libpmr/memory_resource.cpp b/src/libpmr/memory_resource.cpp
index 98f8a82..7824e5d 100644
--- a/src/libpmr/memory_resource.cpp
+++ b/src/libpmr/memory_resource.cpp
@@ -13,7 +13,7 @@ namespace {
 /**
  * @brief Check that bytes is not 0 and that the alignment is a power of two.
  */
-bool verify_args(::LIBIMP_::log::grip &log, std::size_t bytes, std::size_t alignment) noexcept {
+bool verify_args(::LIBIMP::log::grip &log, std::size_t bytes, std::size_t alignment) noexcept {
   if (bytes == 0) {
     return false;
   }
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index ee001dd..d7b2779 100755
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -29,11 +29,13 @@ file(GLOB SRC_FILES
   ${LIBIPC_PROJECT_DIR}/test/imp/*.cpp
   ${LIBIPC_PROJECT_DIR}/test/pmr/*.cpp
   ${LIBIPC_PROJECT_DIR}/test/concur/*.cpp
-  ${LIBIPC_PROJECT_DIR}/test/*.cpp)
+  ${LIBIPC_PROJECT_DIR}/test/ipc/*.cpp)
 
 file(GLOB HEAD_FILES
   ${LIBIPC_PROJECT_DIR}/test/*.h)
 
 add_executable(${PROJECT_NAME} ${SRC_FILES} ${HEAD_FILES})
 
-target_link_libraries(${PROJECT_NAME} gtest_main imp pmr ipc)
+target_link_libraries(${PROJECT_NAME} 
+  gtest_main 
+  imp pmr ipc)
diff --git a/test/test_ipc_shm.cpp b/test/ipc/test_ipc_shm.cpp
similarity index 100%
rename from test/test_ipc_shm.cpp
rename to test/ipc/test_ipc_shm.cpp