diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7e55f92..86342fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,8 +17,12 @@ if(USED_JEMALLOC)
     LINK_LIBRARIES(-ljemalloc)
 endif()
 
+ADD_SUBDIRECTORY(./unit_test)
+
 LINK_LIBRARIES(-lpthread -lcjson -lconfig -lcurl)
 
 ADD_EXECUTABLE(ztp_client ${ZTP_SRC} ztp_main.c)
 
+ADD_LIBRARY(ztp SHARED ${ZTP_SRC})
+
 INCLUDE_DIRECTORIES("./include")
\ No newline at end of file
diff --git a/unit_test/CMakeLists.txt b/unit_test/CMakeLists.txt
new file mode 100644
index 0000000..24de945
--- /dev/null
+++ b/unit_test/CMakeLists.txt
@@ -0,0 +1,48 @@
+# Download and unpack googletest at configure time
+CONFIGURE_FILE(GoogleTest.cmake googletest-download/CMakeLists.txt)
+EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+        RESULT_VARIABLE result
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+    MESSAGE(FATAL_ERROR "CMake step for googletest failed: ${result}")
+endif()
+EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} --build .
+        RESULT_VARIABLE result
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+    MESSAGE(FATAL_ERROR "Build step for googletest failed: ${result}")
+endif()
+
+# Prevent overriding the parent project's compiler/linker
+# settings on Windows
+SET(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+# Add googletest directly to our build. This defines
+# the gtest and gtest_main targets.
+ADD_SUBDIRECTORY(${CMAKE_CURRENT_BINARY_DIR}/googletest-src
+        ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
+        EXCLUDE_FROM_ALL)
+
+# The gtest/gtest_main targets carry header search path
+# dependencies automatically when using CMake 2.8.11 or
+# later. Otherwise we have to add them here ourselves.
+if (CMAKE_VERSION VERSION_LESS 2.8.11)
+    INCLUDE_DIRECTORIES("${gtest_SOURCE_DIR}/include")
+endif()
+
+FIND_LIBRARY(ZTP_LIBRARY libztp.so  ${CMAKE_CURRENT_BINARY_DIR}/../)
+
+AUX_SOURCE_DIRECTORY(./test TEST_SRC)
+
+INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include)
+
+# Now simply link against gtest or gtest_main as needed. Eg
+add_executable(ztp_unit ${TEST_SRC})
+
+#if(ZTP_LIBRARY_FOUND)
+target_link_libraries(ztp_unit ${ZTP_LIBRARY} ztp gtest_main)
+#else()
+#target_link_libraries(ztp_unit gtest_main ztp)
+#endif()
+
+add_test(NAME ztp_unit_test COMMAND ztp_unit)
\ No newline at end of file
diff --git a/unit_test/GoogleTest.cmake b/unit_test/GoogleTest.cmake
new file mode 100644
index 0000000..1e73787
--- /dev/null
+++ b/unit_test/GoogleTest.cmake
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(googletest-download NONE)
+
+include(ExternalProject)
+ExternalProject_Add(googletest
+  GIT_REPOSITORY    https://github.com/google/googletest.git
+  GIT_TAG           master
+  SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
+  BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND     ""
+  INSTALL_COMMAND   ""
+  TEST_COMMAND      ""
+)
\ No newline at end of file
diff --git a/unit_test/test/json_test.cpp b/unit_test/test/json_test.cpp
new file mode 100644
index 0000000..0c532fc
--- /dev/null
+++ b/unit_test/test/json_test.cpp
@@ -0,0 +1,39 @@
+//
+// Created by xajhu on 2019/11/29 0029.
+//
+
+#include "gtest/gtest.h"
+#include <iostream>
+using namespace std;
+
+extern "C" {
+#include "json_interface.h"
+}
+
+TEST(json_encode_test, retOK)
+{
+    int ret = 0;
+    const char *pJson;
+    AUTH_ZTH_REQ ztpReq;
+
+    memset(&ztpReq, 0, sizeof(AUTH_ZTH_REQ));
+    ztpReq.pESN = (char*)"ace08484843";
+
+    pJson = Struct2Json(&ztpReq, JE_AUTH_ZTP, false, &ret);
+
+    if(pJson) {
+        free((void *)pJson);
+    }
+
+    ASSERT_EQ(0,ret);
+}
+
+int main(int argc, char** argv)
+{
+    int ret;
+
+    testing::InitGoogleTest(&argc, argv);
+    ret = RUN_ALL_TESTS();
+
+    return 0;
+}
diff --git a/ztp_main.c b/ztp_main.c
index 3907838..09bdf3e 100644
--- a/ztp_main.c
+++ b/ztp_main.c
@@ -20,6 +20,7 @@ void __onPost(void *pData, unsigned int size, const char *pReqUrl,
     UNUSED(iFinished);
     UNUSED(pUserData);
 
+    LOG_EX(LOG_Info, "Post URL: %s\n", pReqUrl);
     LOG_EX(LOG_Info, "Post Result: %s\n", (char *)pData);
 }
 
@@ -40,7 +41,8 @@ int main(int argc, char **argv)
     pJson = Struct2Json(&ztpReq, JE_AUTH_ZTP, FALSE, &ret);
 
     if(pJson && ret == ERR_OK) {
-        http_post_request("https://xajhuang.com:3006/post", pJson, __onPost);
+        //http_post_request("https://xajhuang.com:3006/post", pJson, __onPost);
+        http_post_request("http://172.28.73.43:8088/device/esn?ESN=1", pJson, __onPost);
     } else {
         LOG_EX(LOG_Error, "Create JSON error: %d\n", ret);
     }