diff --git a/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_1D_test.h b/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_1D_test.h
index a7609ee7476931a0afed13711532bf162d0984ae..7377cbff2450debc69d05cc3e1fa69b7b20ba8e8 100644
--- a/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_1D_test.h
+++ b/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_1D_test.h
@@ -308,62 +308,4 @@ TYPED_TEST( DistributedNDArrayOverlaps_1D_test, synchronize )
 #endif  // HAVE_GTEST
 
 
-#if (defined(HAVE_GTEST) && defined(HAVE_MPI))
-using CommunicatorType = Communicators::MpiCommunicator;
-
-#include <sstream>
-
-class MinimalistBufferedPrinter
-: public ::testing::EmptyTestEventListener
-{
-private:
-   std::stringstream sout;
-
-public:
-   // Called before a test starts.
-   virtual void OnTestStart(const ::testing::TestInfo& test_info)
-   {
-      sout << test_info.test_case_name() << "." << test_info.name() << " Start." << std::endl;
-   }
-
-   // Called after a failed assertion or a SUCCEED() invocation.
-   virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result)
-   {
-      sout << (test_part_result.failed() ? "====Failure=== " : "===Success=== ")
-           << test_part_result.file_name() << " "
-           << test_part_result.line_number() <<std::endl
-           << test_part_result.summary() <<std::endl;
-   }
-
-   // Called after a test ends.
-   virtual void OnTestEnd(const ::testing::TestInfo& test_info)
-   {
-      const int rank = CommunicatorType::GetRank(CommunicatorType::AllGroup);
-      sout << test_info.test_case_name() << "." << test_info.name() << " End." <<std::endl;
-      std::cout << rank << ":" << std::endl << sout.str()<< std::endl;
-      sout.str( std::string() );
-      sout.clear();
-   }
-};
-#endif
-
-#include "../../GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-
-   #ifdef HAVE_MPI
-      ::testing::TestEventListeners& listeners =
-         ::testing::UnitTest::GetInstance()->listeners();
-
-      delete listeners.Release(listeners.default_result_printer());
-      listeners.Append(new MinimalistBufferedPrinter);
-
-      Communicators::ScopedInitializer< CommunicatorType > mpi(argc, argv);
-   #endif
-   return RUN_ALL_TESTS();
-#else
-   throw GtestMissingError();
-#endif
-}
+#include "../../main_mpi.h"
diff --git a/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_semi1D_test.h b/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_semi1D_test.h
index a7f28ead5de63420e97730592948a1cfc2622b11..f1ac970eb2d26f268cc5bd294b05ffd5dcb78551 100644
--- a/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_semi1D_test.h
+++ b/src/UnitTests/Containers/ndarray/DistributedNDArrayOverlaps_semi1D_test.h
@@ -348,62 +348,4 @@ void test_helper_synchronize( DistributedArray& a, const int rank, const int npr
 #endif  // HAVE_GTEST
 
 
-#if (defined(HAVE_GTEST) && defined(HAVE_MPI))
-using CommunicatorType = Communicators::MpiCommunicator;
-
-#include <sstream>
-
-class MinimalistBufferedPrinter
-: public ::testing::EmptyTestEventListener
-{
-private:
-   std::stringstream sout;
-
-public:
-   // Called before a test starts.
-   virtual void OnTestStart(const ::testing::TestInfo& test_info)
-   {
-      sout << test_info.test_case_name() << "." << test_info.name() << " Start." << std::endl;
-   }
-
-   // Called after a failed assertion or a SUCCEED() invocation.
-   virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result)
-   {
-      sout << (test_part_result.failed() ? "====Failure=== " : "===Success=== ")
-           << test_part_result.file_name() << " "
-           << test_part_result.line_number() <<std::endl
-           << test_part_result.summary() <<std::endl;
-   }
-
-   // Called after a test ends.
-   virtual void OnTestEnd(const ::testing::TestInfo& test_info)
-   {
-      const int rank = CommunicatorType::GetRank(CommunicatorType::AllGroup);
-      sout << test_info.test_case_name() << "." << test_info.name() << " End." <<std::endl;
-      std::cout << rank << ":" << std::endl << sout.str()<< std::endl;
-      sout.str( std::string() );
-      sout.clear();
-   }
-};
-#endif
-
-#include "../../GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-
-   #ifdef HAVE_MPI
-      ::testing::TestEventListeners& listeners =
-         ::testing::UnitTest::GetInstance()->listeners();
-
-      delete listeners.Release(listeners.default_result_printer());
-      listeners.Append(new MinimalistBufferedPrinter);
-
-      Communicators::ScopedInitializer< CommunicatorType > mpi(argc, argv);
-   #endif
-   return RUN_ALL_TESTS();
-#else
-   throw GtestMissingError();
-#endif
-}
+#include "../../main_mpi.h"
diff --git a/src/UnitTests/Containers/ndarray/DistributedNDArray_1D_test.h b/src/UnitTests/Containers/ndarray/DistributedNDArray_1D_test.h
index 04afb91a4073750ba5583465b85eeda2239f0628..a8d3bcdab1cf911cf5386d050e0cc29636340a86 100644
--- a/src/UnitTests/Containers/ndarray/DistributedNDArray_1D_test.h
+++ b/src/UnitTests/Containers/ndarray/DistributedNDArray_1D_test.h
@@ -495,62 +495,4 @@ TYPED_TEST( DistributedNDArray_1D_test, forOverlaps )
 #endif  // HAVE_GTEST
 
 
-#if (defined(HAVE_GTEST) && defined(HAVE_MPI))
-using CommunicatorType = Communicators::MpiCommunicator;
-
-#include <sstream>
-
-class MinimalistBufferedPrinter
-: public ::testing::EmptyTestEventListener
-{
-private:
-   std::stringstream sout;
-
-public:
-   // Called before a test starts.
-   virtual void OnTestStart(const ::testing::TestInfo& test_info)
-   {
-      sout << test_info.test_case_name() << "." << test_info.name() << " Start." << std::endl;
-   }
-
-   // Called after a failed assertion or a SUCCEED() invocation.
-   virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result)
-   {
-      sout << (test_part_result.failed() ? "====Failure=== " : "===Success=== ")
-           << test_part_result.file_name() << " "
-           << test_part_result.line_number() <<std::endl
-           << test_part_result.summary() <<std::endl;
-   }
-
-   // Called after a test ends.
-   virtual void OnTestEnd(const ::testing::TestInfo& test_info)
-   {
-      const int rank = CommunicatorType::GetRank(CommunicatorType::AllGroup);
-      sout << test_info.test_case_name() << "." << test_info.name() << " End." <<std::endl;
-      std::cout << rank << ":" << std::endl << sout.str()<< std::endl;
-      sout.str( std::string() );
-      sout.clear();
-   }
-};
-#endif
-
-#include "../../GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-
-   #ifdef HAVE_MPI
-      ::testing::TestEventListeners& listeners =
-         ::testing::UnitTest::GetInstance()->listeners();
-
-      delete listeners.Release(listeners.default_result_printer());
-      listeners.Append(new MinimalistBufferedPrinter);
-
-      Communicators::ScopedInitializer< CommunicatorType > mpi(argc, argv);
-   #endif
-   return RUN_ALL_TESTS();
-#else
-   throw GtestMissingError();
-#endif
-}
+#include "../../main_mpi.h"
diff --git a/src/UnitTests/Containers/ndarray/DistributedNDArray_semi1D_test.h b/src/UnitTests/Containers/ndarray/DistributedNDArray_semi1D_test.h
index 17108509d037be69b78ce7a13bc54edbf37731b3..6f777c215aab824f8d7a2c2916bd459845194e55 100644
--- a/src/UnitTests/Containers/ndarray/DistributedNDArray_semi1D_test.h
+++ b/src/UnitTests/Containers/ndarray/DistributedNDArray_semi1D_test.h
@@ -480,62 +480,4 @@ TYPED_TEST( DistributedNDArray_semi1D_test, forOverlaps )
 #endif  // HAVE_GTEST
 
 
-#if (defined(HAVE_GTEST) && defined(HAVE_MPI))
-using CommunicatorType = Communicators::MpiCommunicator;
-
-#include <sstream>
-
-class MinimalistBufferedPrinter
-: public ::testing::EmptyTestEventListener
-{
-private:
-   std::stringstream sout;
-
-public:
-   // Called before a test starts.
-   virtual void OnTestStart(const ::testing::TestInfo& test_info)
-   {
-      sout << test_info.test_case_name() << "." << test_info.name() << " Start." << std::endl;
-   }
-
-   // Called after a failed assertion or a SUCCEED() invocation.
-   virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result)
-   {
-      sout << (test_part_result.failed() ? "====Failure=== " : "===Success=== ")
-           << test_part_result.file_name() << " "
-           << test_part_result.line_number() <<std::endl
-           << test_part_result.summary() <<std::endl;
-   }
-
-   // Called after a test ends.
-   virtual void OnTestEnd(const ::testing::TestInfo& test_info)
-   {
-      const int rank = CommunicatorType::GetRank(CommunicatorType::AllGroup);
-      sout << test_info.test_case_name() << "." << test_info.name() << " End." <<std::endl;
-      std::cout << rank << ":" << std::endl << sout.str()<< std::endl;
-      sout.str( std::string() );
-      sout.clear();
-   }
-};
-#endif
-
-#include "../../GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-
-   #ifdef HAVE_MPI
-      ::testing::TestEventListeners& listeners =
-         ::testing::UnitTest::GetInstance()->listeners();
-
-      delete listeners.Release(listeners.default_result_printer());
-      listeners.Append(new MinimalistBufferedPrinter);
-
-      Communicators::ScopedInitializer< CommunicatorType > mpi(argc, argv);
-   #endif
-   return RUN_ALL_TESTS();
-#else
-   throw GtestMissingError();
-#endif
-}
+#include "../../main_mpi.h"
diff --git a/src/UnitTests/Containers/ndarray/NDArrayTest.h b/src/UnitTests/Containers/ndarray/NDArrayTest.h
index 1e5d9a30cedf4c25b4e56d1c3a44511588848d86..3d2c85888768924f85d4220b569f969a917b76cd 100644
--- a/src/UnitTests/Containers/ndarray/NDArrayTest.h
+++ b/src/UnitTests/Containers/ndarray/NDArrayTest.h
@@ -1,3 +1,4 @@
+#ifdef HAVE_GTEST
 #include "gtest/gtest.h"
 
 #include <TNL/Containers/NDArray.h>
@@ -1325,14 +1326,7 @@ TEST( NDArrayTest, forBoundary_static_6D )
                << "i = " << i << ", j = " << j << ", k = " << k << ", l = " << l << ", m = " << m << ", n = " << n;
     }
 }
+#endif // HAVE_GTEST
 
-//#include "GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-//#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-   return RUN_ALL_TESTS();
-//#else
-//   throw GtestMissingError();
-//#endif
-}
+
+#include "../../main.h"
diff --git a/src/UnitTests/Containers/ndarray/NDSubarrayTest.cpp b/src/UnitTests/Containers/ndarray/NDSubarrayTest.cpp
index 1b57eed281183f4163501fabdc9027254e255eb9..f4f44003f82ca3597d41ff7dca8010a2c8192430 100644
--- a/src/UnitTests/Containers/ndarray/NDSubarrayTest.cpp
+++ b/src/UnitTests/Containers/ndarray/NDSubarrayTest.cpp
@@ -1,3 +1,4 @@
+#ifdef HAVE_GTEST
 #include "gtest/gtest.h"
 
 #include <TNL/Containers/NDArray.h>
@@ -392,14 +393,7 @@ TEST( NDArraySubarrayTest, Dynamic_6D )
     }
     a.setValue( 0 );
 }
+#endif // HAVE_GTEST
 
-//#include "GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-//#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-   return RUN_ALL_TESTS();
-//#else
-//   throw GtestMissingError();
-//#endif
-}
+
+#include "../../main.h"
diff --git a/src/UnitTests/Containers/ndarray/SlicedNDArrayTest.cpp b/src/UnitTests/Containers/ndarray/SlicedNDArrayTest.cpp
index 8574a56021c6da57331dc63bb7747aa1ba262cb1..eda47a615f9390c75d81b59a817076d69ae9c606 100644
--- a/src/UnitTests/Containers/ndarray/SlicedNDArrayTest.cpp
+++ b/src/UnitTests/Containers/ndarray/SlicedNDArrayTest.cpp
@@ -1,3 +1,4 @@
+#ifdef HAVE_GTEST
 #include "gtest/gtest.h"
 
 #include <TNL/Containers/NDArray.h>
@@ -238,14 +239,7 @@ TEST( SlicedNDArrayTest, CopySemantics )
     EXPECT_EQ( a.getConstView(), c.getConstView() );
     EXPECT_EQ( a.getConstView(), c_view.getConstView() );
 }
+#endif // HAVE_GTEST
 
-//#include "GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-//#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-   return RUN_ALL_TESTS();
-//#else
-//   throw GtestMissingError();
-//#endif
-}
+
+#include "../../main.h"
diff --git a/src/UnitTests/Containers/ndarray/StaticNDArrayCudaTest.cu b/src/UnitTests/Containers/ndarray/StaticNDArrayCudaTest.cu
index 5a0561955f85cce3fac6798cd480466e495cc181..f2c83ba1640fb47e5f0c5777134394215b0ccd8b 100644
--- a/src/UnitTests/Containers/ndarray/StaticNDArrayCudaTest.cu
+++ b/src/UnitTests/Containers/ndarray/StaticNDArrayCudaTest.cu
@@ -1,3 +1,4 @@
+#ifdef HAVE_GTEST
 #include "gtest/gtest.h"
 
 #include <TNL/Containers/NDArray.h>
@@ -76,14 +77,7 @@ TEST( StaticNDArrayCudaTest, CopyFromArray )
 {
     __test_CopyFromArray();
 }
+#endif // HAVE_GTEST
 
-//#include "GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-//#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-   return RUN_ALL_TESTS();
-//#else
-//   throw GtestMissingError();
-//#endif
-}
+
+#include "../../main.h"
diff --git a/src/UnitTests/Containers/ndarray/StaticNDArrayTest.cpp b/src/UnitTests/Containers/ndarray/StaticNDArrayTest.cpp
index e3ea290f26b92723d0490873f7caa263fee35f36..23ffd8066ef41dfe7ae3107bc56388a65a262687 100644
--- a/src/UnitTests/Containers/ndarray/StaticNDArrayTest.cpp
+++ b/src/UnitTests/Containers/ndarray/StaticNDArrayTest.cpp
@@ -1,3 +1,4 @@
+#ifdef HAVE_GTEST
 #include "gtest/gtest.h"
 
 #include <TNL/Containers/NDArray.h>
@@ -92,14 +93,7 @@ TEST( StaticNDArrayTest, CopySemantics )
     EXPECT_EQ( a.getConstView(), c.getConstView() );
     EXPECT_EQ( a.getConstView(), c_view.getConstView() );
 }
+#endif // HAVE_GTEST
 
-//#include "GtestMissingError.h"
-int main( int argc, char* argv[] )
-{
-//#ifdef HAVE_GTEST
-   ::testing::InitGoogleTest( &argc, argv );
-   return RUN_ALL_TESTS();
-//#else
-//   throw GtestMissingError();
-//#endif
-}
+
+#include "../../main.h"