change key mode in the code

Author: Tianyi Chen

test/network/ssl_test.cpp

@@ -35,21 +35,21 @@ class SSLTests : public PelotonTest {};
 // The following keys and certificates are generated using
 // https://www.postgresql.org/docs/9.5/static/libpq-ssl.html
 // and then concate root.crt right after server.crt
-std::string client_crt = std::string(StringUtil::Format(
-    "%s%s", SOURCE_FOLDER, "/test/network/ssl/root.crt"));
-std::string client_key = std::string(StringUtil::Format(
-    "%s%s", SOURCE_FOLDER, "/test/network/ssl/root.key"));
-std::string server_crt = std::string(StringUtil::Format(
-    "%s%s", SOURCE_FOLDER, "/test/network/ssl/server.crt"));
-std::string server_key = std::string(StringUtil::Format(
-    "%s%s", SOURCE_FOLDER, "/test/network/ssl/server.key"));
-std::string root_crt = std::string(StringUtil::Format(
-    "%s%s", SOURCE_FOLDER, "/test/network/ssl/root.crt"));
+std::string client_crt = std::string(
+    StringUtil::Format("%s%s", SOURCE_FOLDER, "/test/network/ssl/root.crt"));
+std::string client_key = std::string(
+    StringUtil::Format("%s%s", SOURCE_FOLDER, "/test/network/ssl/root.key"));
+std::string server_crt = std::string(
+    StringUtil::Format("%s%s", SOURCE_FOLDER, "/test/network/ssl/server.crt"));
+std::string server_key = std::string(
+    StringUtil::Format("%s%s", SOURCE_FOLDER, "/test/network/ssl/server.key"));
+std::string root_crt = std::string(
+    StringUtil::Format("%s%s", SOURCE_FOLDER, "/test/network/ssl/root.crt"));
 
 /**
  * Basic SSL connection test:  Tested with valid certificats and key files
  */
-void *BasicTest(int port) {
+void *TestRoutine(int port) {
   try {
     // forcing the factory to generate psql protocol handler
     pqxx::connection C(StringUtil::Format(
@@ -118,6 +118,7 @@ void *BasicTest(int port) {
  * Callback method to close server after client finishes
  */
 TEST_F(SSLTests, BasicTest) {
+  EXPECT_EQ(0, chmod(client_key.c_str(), S_IRUSR));
   peloton::PelotonInit::Initialize();
   LOG_INFO("Server initialized");
   peloton::network::PelotonServer peloton_server;
@@ -137,7 +138,7 @@ TEST_F(SSLTests, BasicTest) {
   std::thread serverThread([&] { peloton_server.ServerLoop(); });
 
   // server & client running correctly
-  BasicTest(port);
+  TestRoutine(port);
 
   peloton_server.Close();
   serverThread.join();