Fix global_func_text

Author: Critsium-xy

source/module_base/test/global_function_test.cpp

@@ -691,6 +691,9 @@ TEST_F(GlobalFunctionTest,MemAvailable)
 
 TEST_F(GlobalFunctionTest,BlockHere)
 {
+#ifdef __MPI
+#undef __MPI
+#endif
 	std::string output2;
 	std::string block_in="111";
 	GlobalV::MY_RANK=1;
@@ -705,6 +708,9 @@ TEST_F(GlobalFunctionTest,BlockHere)
 
 TEST_F(GlobalFunctionTest,BlockHere2)
 {
+#ifdef __MPI
+#undef __MPI
+#endif
 	std::string output2;
 	std::string block_in="111";
 	GlobalV::MY_RANK=0;
@@ -723,6 +729,9 @@ TEST_F(GlobalFunctionTest,BlockHere2)
 
 TEST_F(GlobalFunctionTest,BlockHere3)
 {
+#ifdef __MPI
+#undef __MPI
+#endif
 	std::string output2;
 	std::string block_in="111";
 	GlobalV::MY_RANK=0;