diff --git a/core/src/CurlHttpClient.h b/core/src/CurlHttpClient.h
index 4480419b7..9c08c3e6e 100644
--- a/core/src/CurlHttpClient.h
+++ b/core/src/CurlHttpClient.h
@@ -1,12 +1,12 @@
 /*
  * Copyright 2009-2017 Alibaba Cloud All rights reserved.
- * 
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
diff --git a/test/core/CMakeLists.txt b/test/core/CMakeLists.txt
index 09f867667..86bf04df0 100644
--- a/test/core/CMakeLists.txt
+++ b/test/core/CMakeLists.txt
@@ -38,6 +38,7 @@ include_directories("../../core/include/")
 add_executable(core_ut
   alibabacloud_ut.cc
   asynccallercontext_ut.cc
+  coreclient_ut.cc
   clientconfiguration_ut.cc
   commonclient_ut.cc
   commonrequest_ut.cc
diff --git a/test/core/coreclient_ut.cc b/test/core/coreclient_ut.cc
new file mode 100644
index 000000000..c43f56e00
--- /dev/null
+++ b/test/core/coreclient_ut.cc
@@ -0,0 +1,44 @@
+
+#include <iostream>
+#include <stdio.h>
+#include "gtest/gtest.h"
+#include "alibabacloud/core/CoreClient.h"
+
+using namespace std;
+using namespace AlibabaCloud;
+
+namespace AlibabaCloud {
+  class TestCoreClient : public CoreClient {
+    public:
+      TestCoreClient(const std::string & servicename, const ClientConfiguration &configuration):
+        CoreClient(servicename, configuration)
+      {}
+
+      using CoreClient::buildCoreError;
+      using CoreClient::hasResponseError;
+      HttpRequest buildHttpRequest(const std::string & endpoint, const ServiceRequest &msg, HttpRequest::Method method)const {
+        Url url;
+        url.setScheme("abc");
+        url.setUserName("username");
+        HttpRequest req(url, HttpRequest::Method::Post);
+        return req;
+      }
+  };
+}
+
+
+TEST(CoreClient, basic) {
+  ClientConfiguration configuration;
+  TestCoreClient client("test-service", configuration);
+
+  HttpResponse res;
+  Error e1 = client.buildCoreError(res);
+  EXPECT_TRUE(e1.errorCode() == ("InvalidResponse"));
+  string body = "{\"Code\":\"any-error-code\",\"Message\":\"any-error-message\",\"HostId\":\"any-host-id\",\"RequestId\":\"any-request-id\"}";
+  res.setBody(body.c_str(), body.size());
+  Error e2 = client.buildCoreError(res);
+  EXPECT_TRUE(e2.errorCode() == ("any-error-code"));
+  EXPECT_TRUE(e2.errorMessage() == ("any-error-message"));
+  EXPECT_TRUE(e2.host() == ("any-host-id"));
+  EXPECT_TRUE(e2.requestId() == ("any-request-id"));
+}