diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..859898f
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+third/* linguist-vendored
+help/* linguist-documentation
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e62cbf..3a83174 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,7 @@ if(ENABLE_CODE_COVERAGE)
 endif()
 
 # Required libraries
+find_package(Boost 1.71.0 COMPONENTS unit_test_framework REQUIRED)
 find_package(PkgConfig REQUIRED)
 find_package(OpenSSL REQUIRED)
 if(NOT OPENSSL_FOUND)
@@ -63,14 +64,13 @@ if(NOT CURL_FOUND)
 endif()
 include_directories(${CURL_INCLUDE_DIRS})
 
-find_library(cpprest REQUIRED)
-include_directories(${CPP_REST_INCLUDE_DIR})
-
-
 include_directories(
   ${PROJECT_SOURCE_DIR}/src
   ${PROJECT_SOURCE_DIR}/third
 )
 
+# Enable CTest
+enable_testing()
+
 add_subdirectory(src)
-#add_subdirectory(test)
+add_subdirectory(test)
diff --git a/Dockerfile b/Dockerfile
index 4121475..c40894f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,6 +9,7 @@ doxygen \
 git \
 graphviz \
 libboost-dev \
+libboost-test-dev \
 libcurl4-openssl-dev \
 libssl-dev \
 ninja-build \
diff --git a/Jenkinsfile b/Jenkinsfile
index 371f55b..b7f1729 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,58 +1,72 @@
+def unittestBadge = addEmbeddableBadgeConfiguration(id: "unittest", subject: "unit test")
+
 pipeline {
   agent {
     dockerfile true
   }
 
-	stages{
-		stage("parallel execution"){
-			parallel{
-				stage("doxygen"){
-					steps{
-						sh 'doxygen'
-					}
-				}
+ stages{
+  stage("parallel execution"){
+   parallel{
+    stage("doxygen"){
+     steps{
+      sh 'doxygen'
+     }
+    }
 
-				stage("validation"){
-					steps{
-						sh 'tools/validate/includeGuard.sh'
-					}
-				}
-				stage("build and test"){
-					stages{
-						stage("prepare"){
-							steps{
-								sh '''
-									mkdir -p build
-									cd build
-									cmake .. -G Ninja
-								'''
-							}
-						}
+    stage("validation"){
+     steps{
+      sh 'tools/validate/includeGuard.sh'
+     }
+    }
+    stage("build and test"){
+     stages{
+      stage("prepare"){
+       steps{
+        sh '''
+         mkdir -p build
+         cd build
+         cmake .. -G Ninja
+        '''
+       }
+      }
 
-						stage("build"){
-							steps{
-								sh '''
-									cd build
-									ninja
-								'''
-							}
-						}
+      stage("build"){
+       steps{
+        sh '''
+         cd build
+         ninja
+        '''
+       }
+      }
 
-						stage("test"){
-							steps{
-								echo "test"
-							}
-						}
-					}
-				}
-			}
-		}
+      stage("test"){
+       steps{
+        script{
+         unittestBadge.setStatus('running')
+         try{
+          sh '''
+           cd build
+           ctest --output_on_failure
+          '''
+          unittestBadge.setStatus('passing')
+         }catch(Exception error){
+          unittestBadge.setStatus('failed')
+          error 'unittest failed'
+         }
+        }
+       }
+      }
+     }
+    }
+   }
+  }
 
-		stage("upload artifact"){
-			steps{
-				archiveArtifacts allowEmptyArchive: true, artifacts: 'help/**/*.*', onlyIfSuccessful: true
-			}
-		}
+  stage("upload artifact"){
+   steps{
+    archiveArtifacts allowEmptyArchive: true, artifacts: 'help/**/*.*', onlyIfSuccessful: true
+   }
+  }
 
-	}
+ }
 }
diff --git a/README.md b/README.md
index c7dc836..5c06c11 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,8 @@
+![https://jenkins.milkcocoa.info/job/CocoaTweet/job/master](https://jenkins.milkcocoa.info/job/CocoaTweet/job/master/badge/icon?style=plastic)
+![](http://jenkins.milkcocoa.info/job/CocoaTweet/job/master/badge/icon?style=plastic&config=unittest)
+![](https://img.shields.io/badge/libcurl-libcurl4--openssl-blue)
+![](https://img.shields.io/badge/libssl-1.1.1f-blue)
+
 # CocoaTweet
 This is a library for using Twitter API from C++  
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 663f71f..4f96f35 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -2,9 +2,4 @@ add_subdirectory(cocoatweet)
 
 set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR})
 add_executable(${PROJECT_NAME} main.cc)
-target_link_libraries(${PROJECT_NAME}
-  lib-cocoatweet
-  OpenSSL::SSL
-  OpenSSL::Crypto
-  ${CURL_LIBRARIES}
-)
+target_link_libraries(${PROJECT_NAME} lib-cocoatweet)
\ No newline at end of file
diff --git a/src/cocoatweet/CMakeLists.txt b/src/cocoatweet/CMakeLists.txt
index c5bb89d..ef17d9c 100644
--- a/src/cocoatweet/CMakeLists.txt
+++ b/src/cocoatweet/CMakeLists.txt
@@ -1,4 +1,11 @@
 file(GLOB_RECURSE SOURCES ./*.cc)
 add_library(lib-cocoatweet ${SOURCES})
+target_link_libraries(lib-cocoatweet PUBLIC
+  Boost::boost
+  OpenSSL::SSL
+  OpenSSL::Crypto
+  ${CURL_LIBRARIES}
+)
+
 target_include_directories(lib-cocoatweet PUBLIC ${PROJECT_SOURCE_DIR}/src)
 set_target_properties(lib-cocoatweet PROPERTIES OUTPUT_NAME cocoatweet)
diff --git a/src/cocoatweet/oauth/key.h b/src/cocoatweet/oauth/key.h
index 3b4b29f..07aba49 100644
--- a/src/cocoatweet/oauth/key.h
+++ b/src/cocoatweet/oauth/key.h
@@ -11,7 +11,11 @@ class Key {
   const std::string accessTokenSecret_;
 
 public:
-  Key() = default;
+  Key()
+      : consumerKey_(""),
+        consumerSecret_(""),
+        accessToken_(""),
+        accessTokenSecret_("") {}
   Key(const std::string& _consumerKey, const std::string& _consumerSecret,
       const std::string& _accessToken, const std::string& _accessTokenSecret)
       : consumerKey_(_consumerKey),
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
new file mode 100644
index 0000000..fe3c3f1
--- /dev/null
+++ b/test/CMakeLists.txt
@@ -0,0 +1,15 @@
+file(GLOB_RECURSE SOURCES ./*.cc)
+
+foreach(TEST_SOURCE_FILE ${SOURCES})
+  file(RELATIVE_PATH SRC_RELPATH ${CMAKE_CURRENT_LIST_DIR} ${TEST_SOURCE_FILE})
+  string(REGEX REPLACE "\.cc$" "" TEST_MODULE_NAME "test/${SRC_RELPATH}")
+  string(REPLACE "/" "_" TEST_EXECUTABLE_NAME ${TEST_MODULE_NAME})
+
+  add_executable(${TEST_EXECUTABLE_NAME} ${TEST_SOURCE_FILE})
+  target_compile_definitions(${TEST_EXECUTABLE_NAME} PRIVATE BOOST_TEST_MODULE=${TEST_MODULE_NAME})
+  target_link_libraries(${TEST_EXECUTABLE_NAME}
+    lib-cocoatweet
+    Boost::unit_test_framework
+  )
+  add_test(${TEST_MODULE_NAME} ${EXECUTABLE_OUTPUT_PATH}/${TEST_EXECUTABLE_NAME})
+endforeach()
diff --git a/test/oauth/key.cc b/test/oauth/key.cc
new file mode 100644
index 0000000..c5bd0c7
--- /dev/null
+++ b/test/oauth/key.cc
@@ -0,0 +1,35 @@
+#define BOOST_TEST_DYN_LINK
+
+#include <boost/test/included/unit_test.hpp>
+
+#include "cocoatweet/oauth/key.h"
+
+BOOST_AUTO_TEST_SUITE(oauth_key)
+BOOST_AUTO_TEST_CASE(test01) {
+    CocoaTweet::OAuth::Key key;
+
+  BOOST_TEST(key.consumerKey() == "");
+  BOOST_TEST(key.consumerSecret() == "");
+  BOOST_TEST(key.accessToken() == "");
+  BOOST_TEST(key.accessTokenSecret() == "");
+}
+
+BOOST_AUTO_TEST_CASE(test02) {
+  CocoaTweet::OAuth::Key key("consumerKey", "consumerSecret", "accessToken", "accessTokenSecret");
+
+  BOOST_TEST(key.consumerKey() == "consumerKey");
+  BOOST_TEST(key.consumerSecret() == "consumerSecret");
+  BOOST_TEST(key.accessToken() == "accessToken");
+  BOOST_TEST(key.accessTokenSecret() == "accessTokenSecret");
+
+  auto noSecret = key.noSecret();
+  BOOST_TEST(noSecret.at("oauth_consumer_key") == "consumerKey");
+  BOOST_TEST(noSecret.at("oauth_token") == "accessToken");
+
+  auto secret = key.secret();
+  BOOST_TEST(secret.at("oauth_consumer_key") == "consumerSecret");
+  BOOST_TEST(secret.at("oauth_token") == "accessTokenSecret");
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()
diff --git a/tools/validate/includeGuard.sh b/tools/validate/includeGuard.sh
index a66b80f..cfb7657 100755
--- a/tools/validate/includeGuard.sh
+++ b/tools/validate/includeGuard.sh
@@ -8,7 +8,7 @@ for f in $(git ls-files | grep -E '^src\/.*\.h$'); do
   # ファイルパスから正しいインクルードガードの文字列を生成する
   s1="$(echo "$f" | sed -r 's/^src\///; s/[\/\.-]+/_/g; s/^.*$/\U&/')_"
 
-	# ファイルからインクルードガードを読み込む
+ # ファイルからインクルードガードを読み込む
   s2=$(grep -Pzo '#ifndef\s+\K\b(\w+)\b(?=\s+#define\s+\b\1\b)' "$f" | tr '\0' '\n')
 
   if [ -z "$s2" ]; then