Add CMake support for building and setting up the MPAS test core

CMakeLists.txt

@@ -2,6 +2,7 @@
 cmake_minimum_required(VERSION 3.12)
 
 include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/Functions/MPAS_Functions.cmake)
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/Functions/setup_mpas_test_core.cmake)
 get_mpas_version(MPAS_VERSION)
 project(MPAS LANGUAGES C Fortran VERSION ${MPAS_VERSION} DESCRIPTION "MPAS - Model for Prediction Across Scales")
 

cmake/Functions/MPAS_Functions.cmake

@@ -203,7 +203,15 @@ function(mpas_core_target)
 
     #Per-core generated output and tables directory location
     set(CORE_DATADIR ${CMAKE_BINARY_DIR}/${PROJECT_NAME}/${ARG_TARGET})
-    file(MAKE_DIRECTORY ${CORE_DATADIR})
+    # Special handling for core_test to setup test data
+    if (${ARG_TARGET} STREQUAL "core_test")
+        set(CORE_DATADIR ${CMAKE_BINARY_DIR}/test)
+        setup_mpas_test_core()
+        set_target_properties(mpas_test PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CORE_DATADIR})
+    endif()
+    if (NOT EXISTS ${CORE_DATADIR})
+        file(MAKE_DIRECTORY ${CORE_DATADIR})
+    endif()
 
     #Process registry and generate includes, namelists, and streams
     get_git_version(git_version)

cmake/Functions/setup_mpas_test_core.cmake

@@ -0,0 +1,143 @@
+#------------------------------------------------------------------------------
+# download_mpas_test_data(dst_dir)
+#
+# Downloads the MPAS test data tarball to the specified destination directory.
+# If the tarball already exists, it is not re-downloaded.
+#------------------------------------------------------------------------------
+function(download_mpas_test_data dst_dir)
+    set(url "https://www2.mmm.ucar.edu/mpas_test_data/mpas_test_data.tar.gz")
+    set(output_file "${dst_dir}/mpas_test_data.tar.gz")
+
+    file(MAKE_DIRECTORY "${dst_dir}")
+
+    message(STATUS "Downloading MPAS test data from ${url}")
+
+    execute_process(
+            COMMAND wget -O "${output_file}" "${url}"
+            WORKING_DIRECTORY "${dst_dir}"
+            RESULT_VARIABLE result
+    )
+
+    if(result EQUAL 0)
+        message(STATUS "MPAS test data saved to: ${output_file}")
+    else()
+        message(FATAL_ERROR "Failed to download MPAS test data (wget exit code: ${result})")
+    endif()
+endfunction()
+
+
+#------------------------------------------------------------------------------
+# untar_tarball(tarball_path dest_dir)
+#
+# Extracts a tarball into the specified destination directory.
+#------------------------------------------------------------------------------
+function(untar_tarball tarball_path dest_dir)
+    if(NOT EXISTS "${tarball_path}")
+        message(FATAL_ERROR "Tarball not found: ${tarball_path}")
+    endif()
+
+    file(MAKE_DIRECTORY "${dest_dir}")
+
+    message(STATUS "Extracting ${tarball_path} → ${dest_dir}")
+    execute_process(
+            COMMAND ${CMAKE_COMMAND} -E tar xzf "${tarball_path}"
+            WORKING_DIRECTORY "${dest_dir}"
+            RESULT_VARIABLE untar_result
+    )
+
+    if(NOT untar_result EQUAL 0)
+        message(FATAL_ERROR "Failed to extract ${tarball_path} (exit code ${untar_result})")
+    else()
+        message(STATUS "Successfully extracted ${tarball_path} to ${dest_dir}")
+    endif()
+endfunction()
+
+
+#------------------------------------------------------------------------------
+# mpas_link_file_force(src dst)
+#
+# Creates a symbolic link from `src` to `dst`, overwriting if it exists.
+#------------------------------------------------------------------------------
+function(mpas_link_file_force src dst)
+    if(NOT EXISTS "${src}")
+        message(FATAL_ERROR "Link source does not exist: ${src}")
+    endif()
+
+    if(EXISTS "${dst}" OR IS_SYMLINK "${dst}")
+        file(REMOVE "${dst}")
+    endif()
+
+    file(CREATE_LINK "${src}" "${dst}" SYMBOLIC)
+endfunction()
+
+
+#------------------------------------------------------------------------------
+# mpas_link_directory(src_dir dst_dir)
+#
+# Creates symbolic links in `dst_dir` for all files in `src_dir` (non-recursive).
+#------------------------------------------------------------------------------
+function(mpas_link_directory src_dir dst_dir)
+    if(NOT IS_DIRECTORY "${src_dir}")
+        message(FATAL_ERROR "mpas_link_directory: Source is not a directory: ${src_dir}")
+    endif()
+
+    file(MAKE_DIRECTORY "${dst_dir}")
+    file(GLOB files CONFIGURE_DEPENDS LIST_DIRECTORIES false "${src_dir}/*")
+
+    foreach(file_path IN LISTS files)
+        get_filename_component(filename "${file_path}" NAME)
+        mpas_link_file_force("${file_path}" "${dst_dir}/${filename}")
+    endforeach()
+endfunction()
+
+
+#------------------------------------------------------------------------------
+# setup_mpas_test_core()
+#
+# Prepares the MPAS test core environment:
+#   - Downloads and extracts MPAS test data if missing.
+#   - Symlinks all extracted test data into the test directory.
+#------------------------------------------------------------------------------
+function(setup_mpas_test_core)
+    set(dst_dir "${CMAKE_BINARY_DIR}/test")
+
+    file(MAKE_DIRECTORY "${dst_dir}")
+    message(STATUS "Setting up MPAS test core in: ${dst_dir}")
+
+    #--------------------------------------------------------------------------
+    # Download test data tarball (if missing)
+    #--------------------------------------------------------------------------
+    set(tarball_path "${dst_dir}/mpas_test_data.tar.gz")
+    if(EXISTS "${tarball_path}")
+        message(STATUS "MPAS test data tarball already exists: ${tarball_path}")
+    else()
+        message(STATUS "Downloading MPAS test data to: ${tarball_path}")
+        file(DOWNLOAD
+                "https://www2.mmm.ucar.edu/mpas_test_data/mpas_test_data.tar.gz"
+                "${tarball_path}"
+                SHOW_PROGRESS
+                STATUS status
+                LOG log
+        )
+        list(GET status 0 status_code)
+        if(NOT status_code EQUAL 0)
+            message(FATAL_ERROR "Failed to download MPAS test data: ${log}")
+        endif()
+    endif()
+
+    #--------------------------------------------------------------------------
+    # Extract the test data
+    #--------------------------------------------------------------------------
+    message(STATUS "Extracting MPAS test data...")
+    untar_tarball("${tarball_path}" "${dst_dir}")
+
+    #--------------------------------------------------------------------------
+    # Link extracted data into the test directory
+    #--------------------------------------------------------------------------
+    set(extracted_dir "${dst_dir}/mpas_test_data")
+    if(EXISTS "${extracted_dir}")
+        mpas_link_directory("${extracted_dir}" "${dst_dir}")
+    endif()
+
+    message(STATUS "MPAS test core setup complete.")
+endfunction()

src/core_test/CMakeLists.txt

@@ -0,0 +1,31 @@
+include(${CMAKE_SOURCE_DIR}/cmake/Functions/setup_mpas_test_core.cmake)
+
+set(test_core_inc
+        block_dimension_routines.inc
+        core_variables.inc
+        define_packages.inc
+        domain_variables.inc
+        namelist_call.inc
+        namelist_defines.inc
+        setup_immutable_streams.inc
+        structs_and_variables.inc)
+
+## core_init_atosphere
+set(test_core_srcs
+        mpas_test_core.F
+        mpas_test_core_field_tests.F
+        mpas_test_core_halo_exch.F
+        mpas_halo_testing.F
+        mpas_test_core_interface.F
+        mpas_test_core_sorting.F
+        mpas_test_openacc.F
+        mpas_test_core_string_utils.F
+        mpas_test_core_dmpar.F
+        mpas_test_core_timekeeping_tests.F
+        mpas_test_core_streams.F
+        mpas_test_core_stream_list.F
+        mpas_test_core_stream_inquiry.F
+)
+
+add_library(core_test ${test_core_srcs})
+mpas_core_target(CORE test TARGET core_test INCLUDES ${test_core_inc})