Tests: Extend FindHDF5 tests to link and run executables

Verify that this works using both targets and variables.

Tests/FindHDF5/CMakeLists.txt

@@ -25,6 +25,7 @@ add_test(NAME FindHDF5.Default COMMAND
   ${build_generator_args}
   --build-project TestFindHDF5
   --build-options ${build_options} -DTEST_SERIAL=1 "-DTEST_LANGS=${test_langs}"
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
   )
 
 foreach(variant Serial OpenMPI MPICH)
@@ -60,6 +61,7 @@ foreach(variant Serial OpenMPI MPICH)
     ${build_generator_args}
     --build-project TestFindHDF5
     --build-options ${build_options} ${test_kind} "-DTEST_LANGS=${wrapper_langs}" ${wrapper}
+    --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
     )
   if(CMake_TEST_FindHDF5_${variant}_ENVMOD)
     set_property(TEST FindHDF5.${variant} PROPERTY ENVIRONMENT_MODIFICATION ${CMake_TEST_FindHDF5_${variant}_ENVMOD})
@@ -76,6 +78,7 @@ foreach(variant Serial OpenMPI MPICH)
       ${build_generator_args}
       --build-project TestFindHDF5
       --build-options ${build_options} ${test_kind} "-DTEST_LANGS=${wrapper_langs}" -D TEST_WRAPPER_AS_COMPILER=1 ${wrapper_as_compiler}
+      --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
       )
     if(CMake_TEST_FindHDF5_${variant}_ENVMOD)
       set_property(TEST FindHDF5.${variant}-Wrapper PROPERTY ENVIRONMENT_MODIFICATION ${CMake_TEST_FindHDF5_${variant}_ENVMOD})

Tests/FindHDF5/Test/CMakeLists.txt

@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.26)
 project(TestFindHDF5 LANGUAGES ${TEST_LANGS})
+include(CTest)
 message(STATUS "CTEST_FULL_OUTPUT (Avoid ctest truncation of output)")
 
 if(TEST_PARALLEL)
@@ -56,3 +57,50 @@ if(TEST_PARALLEL)
     message(SEND_ERROR "HDF5_IS_PARALLEL is false in parallel test.")
   endif()
 endif()
+
+if(TEST_PARALLEL)
+  set(MPI_CXX_SKIP_MPICXX TRUE)
+  set(MPI_CXX_VALIDATE_SKIP_MPICXX TRUE)
+  find_package(MPI REQUIRED)
+  set(mpi_C_tgt MPI::MPI_C)
+  set(mpi_C_inc ${MPI_C_INCLUDE_PATH})
+  set(mpi_C_lib ${MPI_C_LINK_FLAGS} ${MPI_C_LIBRARIES})
+  set(mpi_Fortran_tgt MPI::MPI_Fortran)
+  set(mpi_Fortran_inc ${MPI_Fortran_INCLUDE_PATH})
+  set(mpi_Fortran_lib ${MPI_Fortran_LIBRARIES})
+endif()
+
+if(CMAKE_C_COMPILER_LOADED)
+  add_executable(test_C_tgt test_C.c)
+  target_link_libraries(test_C_tgt PRIVATE hdf5::hdf5 ${mpi_C_tgt})
+  add_test(NAME test_C_tgt COMMAND test_C_tgt test_C_tgt.h5)
+
+  add_executable(test_C_var test_C.c)
+  target_include_directories(test_C_var PRIVATE ${HDF5_C_INCLUDE_DIRS} ${mpi_C_inc})
+  target_link_libraries(test_C_var PRIVATE ${HDF5_C_LIBRARIES} ${mpi_C_lib})
+  add_test(NAME test_C_var COMMAND test_C_var test_C_var.h5)
+endif()
+
+if(CMAKE_CXX_COMPILER_LOADED)
+  add_executable(test_CXX_tgt test_CXX.cxx)
+  target_link_libraries(test_CXX_tgt PRIVATE hdf5::hdf5_cpp
+    hdf5::hdf5 # FIXME: hdf5::hdf5_cpp should link hdf5::hdf5 automatically.
+    ${mpi_C_tgt})
+  add_test(NAME test_CXX_tgt COMMAND test_CXX_tgt test_CXX_tgt.h5)
+
+  add_executable(test_CXX_var test_CXX.cxx)
+  target_include_directories(test_CXX_var PRIVATE ${HDF5_CXX_INCLUDE_DIRS} ${mpi_C_inc})
+  target_link_libraries(test_CXX_var PRIVATE ${HDF5_CXX_LIBRARIES} ${mpi_C_lib})
+  add_test(NAME test_CXX_var COMMAND test_CXX_var test_CXX_var.h5)
+endif()
+
+if(CMAKE_Fortran_COMPILER_LOADED)
+  add_executable(test_Fortran_tgt test_Fortran.f90)
+  target_link_libraries(test_Fortran_tgt PRIVATE hdf5::hdf5_fortran ${mpi_Fortran_tgt})
+  add_test(NAME test_Fortran_tgt COMMAND test_Fortran_tgt)
+
+  add_executable(test_Fortran_var test_Fortran.f90)
+  target_include_directories(test_Fortran_var PRIVATE ${HDF5_Fortran_INCLUDE_DIRS} ${mpi_Fortran_inc})
+  target_link_libraries(test_Fortran_var PRIVATE ${HDF5_Fortran_LIBRARIES} ${mpi_Fortran_lib})
+  add_test(NAME test_Fortran_var COMMAND test_Fortran_var)
+endif()

Tests/FindHDF5/Test/test_C.c

@@ -0,0 +1,12 @@
+#include <hdf5.h>
+
+int main(int argc, const char* argv[])
+{
+  hid_t fid;
+  if (argc != 2) {
+    return 1;
+  }
+  fid = H5Fcreate(argv[1], H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+  H5Fclose(fid);
+  return 0;
+}

Tests/FindHDF5/Test/test_CXX.cxx

@@ -0,0 +1,14 @@
+#include <H5Cpp.h>
+
+#ifndef H5_NO_NAMESPACE
+using namespace H5;
+#endif
+
+int main(int argc, const char* argv[])
+{
+  if (argc != 2) {
+    return 1;
+  }
+  H5File f(argv[1], H5F_ACC_TRUNC);
+  return 0;
+}

Tests/FindHDF5/Test/test_Fortran.f90

@@ -0,0 +1,6 @@
+program hdf5_hello
+  use hdf5
+  integer error
+  call h5open_f(error)
+  call h5close_f(error)
+end