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..4cfbc77 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -3,56 +3,59 @@ pipeline {
     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{
+        sh '''
+         cd build
+         ctest --output_on_failure
+        '''
+       }
+      }
+     }
+    }
+   }
+  }
 
-		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/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()