fix unitest load config error

Former-commit-id: 8bf7417881a421bf5c28a31474743484e8fea155

cpp/src/utils/CommonUtil.cpp

@@ -132,6 +132,21 @@ bool CommonUtil::IsFileExist(const std::string &path) {
     return (access(path.c_str(), F_OK) == 0);
 }
 
+std::string CommonUtil::GetExePath() {
+    const size_t bug_len = 1024;
+    char exe_path[bug_len];
+    size_t cnt = readlink("/proc/self/exe", exe_path, bug_len);
+    if(cnt < 0|| cnt >= bug_len) {
+        return "";
+    }
+
+    std::string store_path = exe_path;
+    if(store_path.rfind('/') != store_path.length()){
+        std::string sub_str = store_path.substr(0, store_path.rfind('/'));
+        return sub_str + "/";
+    }
+    return store_path;
+}
 
 }
 }

cpp/src/utils/CommonUtil.h

@@ -22,6 +22,8 @@ class CommonUtil {
     static bool IsDirectoryExit(const std::string &path);
     static ServerError CreateDirectory(const std::string &path);
     static ServerError DeleteDirectory(const std::string &path);
+
+    static std::string GetExePath();
 };
 
 }

cpp/unittest/vecwise_test.cpp

@@ -8,13 +8,18 @@
 #include <easylogging++.h>
 
 #include "server/ServerConfig.h"
+#include "utils/CommonUtil.h"
 
 INITIALIZE_EASYLOGGINGPP
 
+using namespace zilliz::vecwise;
+
 int main(int argc, char **argv) {
-    std::string config_filename = "../../../conf/server_config.yaml";
+    std::string exe_path = server::CommonUtil::GetExePath();
+    std::string config_filename = exe_path + "../../../conf/server_config.yaml";
     zilliz::vecwise::server::ServerConfig& config = zilliz::vecwise::server::ServerConfig::GetInstance();
     config.LoadConfigFile(config_filename);
+    std::cout << "Load config file form: " << config_filename << std::endl;
 
     ::testing::InitGoogleTest(&argc, argv);
     return RUN_ALL_TESTS();