Add Meiss VMEC golden record regression

.gitignore

@@ -14,6 +14,7 @@ fort.*
 RUN/PICS
 *.sublime-*
 RUN/
+/golden_record/
 *.pdf
 \#*
 *.so

cmake/Util.cmake

@@ -1,39 +1,107 @@
 include(FetchContent)
 
 function(find_or_fetch DEPENDENCY)
-    if(DEFINED ENV{CODE})
-        set(${DEPENDENCY}_SOURCE_DIR $ENV{CODE}/${DEPENDENCY})
-        message(STATUS "Using ${DEPENDENCY} in $ENV{CODE}/${DEPENDENCY}")
-    else()
-        set(REPO_URL https://github.com/itpplasma/${DEPENDENCY}.git)
-        set(REMOTE_BRANCH "")
-
-        if(${DEPENDENCY} STREQUAL "libneo")
-            if(DEFINED LIBNEO_BRANCH AND NOT "${LIBNEO_BRANCH}" STREQUAL "")
-                string(STRIP "${LIBNEO_BRANCH}" REMOTE_BRANCH)
-            elseif(DEFINED ENV{LIBNEO_BRANCH} AND NOT "$ENV{LIBNEO_BRANCH}" STREQUAL "")
-                string(STRIP "$ENV{LIBNEO_BRANCH}" REMOTE_BRANCH)
+    string(TOUPPER "${DEPENDENCY}" _dep_upper)
+    string(TOLOWER "${DEPENDENCY}" _dep_lower)
+
+    set(_source_dir "")
+    set(_use_local FALSE)
+
+    # Allow explicit override via <DEPENDENCY>_SOURCE_DIR cache variable
+    set(_override_var "${_dep_upper}_SOURCE_DIR")
+    if(DEFINED ${_override_var})
+        get_filename_component(_candidate "${${_override_var}}" ABSOLUTE "${CMAKE_SOURCE_DIR}")
+        if(IS_DIRECTORY "${_candidate}")
+            set(_source_dir "${_candidate}")
+            set(_use_local TRUE)
+        else()
+            message(FATAL_ERROR "${_override_var}='${_candidate}' is not a directory")
+        endif()
+    endif()
+
+    if(NOT _use_local AND DEFINED ENV{CODE})
+        get_filename_component(_candidate "$ENV{CODE}/${_dep_lower}" ABSOLUTE)
+        if(IS_DIRECTORY "${_candidate}")
+            set(_source_dir "${_candidate}")
+            set(_use_local TRUE)
+        endif()
+    endif()
+
+    if(_use_local)
+        message(STATUS "Using ${_dep_lower} in ${_source_dir}")
+        set(${_dep_upper}_SOURCE_DIR "${_source_dir}" CACHE PATH "" FORCE)
+        if("${_dep_lower}" STREQUAL "libneo")
+            set(LIBNEO_ENABLE_TESTS OFF CACHE BOOL "" FORCE)
+        endif()
+        add_subdirectory("${_source_dir}" "${CMAKE_CURRENT_BINARY_DIR}/${_dep_lower}" EXCLUDE_FROM_ALL)
+        return()
+    endif()
+
+    set(_repo_url "https://github.com/itpplasma/${_dep_lower}.git")
+    set(_repo_var "${_dep_upper}_REPO_URL")
+    if(DEFINED ${_repo_var} AND NOT "${${_repo_var}}" STREQUAL "")
+        set(_repo_url "${${_repo_var}}")
+    elseif(DEFINED ENV{${_repo_var}} AND NOT "$ENV{${_repo_var}}" STREQUAL "")
+        set(_repo_url "$ENV{${_repo_var}}")
+    endif()
+    if("${_dep_lower}" STREQUAL "libneo")
+        set(_branch "")
+        set(_branch_source "")
+        if(DEFINED LIBNEO_BRANCH AND NOT "${LIBNEO_BRANCH}" STREQUAL "")
+            string(STRIP "${LIBNEO_BRANCH}" _branch)
+            set(_branch_source "cache")
+        elseif(DEFINED ENV{LIBNEO_BRANCH} AND NOT "$ENV{LIBNEO_BRANCH}" STREQUAL "")
+            string(STRIP "$ENV{LIBNEO_BRANCH}" _branch)
+            set(_branch_source "env")
+        endif()
+
+        if(NOT _branch STREQUAL "")
+            execute_process(
+                COMMAND git ls-remote --heads ${_repo_url} ${_branch}
+                OUTPUT_VARIABLE _branch_exists
+                RESULT_VARIABLE _branch_check_status
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+            )
+            set(_branch_valid FALSE)
+            if(_branch_check_status EQUAL 0 AND NOT _branch_exists STREQUAL "")
+                set(_branch_valid TRUE)
+            endif()
+            if(NOT _branch_valid)
+                message(WARNING "LIBNEO branch '${_branch}' (source: ${_branch_source}) not found; falling back to auto-detected branch")
+                set(_branch "")
             endif()
         endif()
 
-        if(REMOTE_BRANCH STREQUAL "")
-            get_branch_or_main(${REPO_URL} REMOTE_BRANCH)
+        if(_branch STREQUAL "")
+            get_branch_or_main(${_repo_url} _branch)
         endif()
-        message(STATUS "Using ${DEPENDENCY} branch ${REMOTE_BRANCH} from ${REPO_URL}")
-
-        FetchContent_Declare(
-            ${DEPENDENCY}
-            DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-            GIT_REPOSITORY ${REPO_URL}
-            GIT_TAG ${REMOTE_BRANCH}
-        )
-        FetchContent_Populate(${DEPENDENCY})
+
+        message(STATUS "Using ${_dep_lower} branch ${_branch} from ${_repo_url}")
+
+        set(LIBNEO_ENABLE_TESTS OFF CACHE BOOL "" FORCE)
+    else()
+        set(_branch "")
+        set(_branch_var "${_dep_upper}_BRANCH")
+        if(DEFINED ${_branch_var} AND NOT "${${_branch_var}}" STREQUAL "")
+            string(STRIP "${${_branch_var}}" _branch)
+        elseif(DEFINED ENV{${_branch_var}} AND NOT "$ENV{${_branch_var}}" STREQUAL "")
+            string(STRIP "$ENV{${_branch_var}}" _branch)
+        endif()
+
+        if(_branch STREQUAL "")
+            get_branch_or_main(${_repo_url} _branch)
+        endif()
+
+        message(STATUS "Using ${_dep_lower} branch ${_branch} from ${_repo_url}")
     endif()
 
-    add_subdirectory(${${DEPENDENCY}_SOURCE_DIR}
-        ${CMAKE_CURRENT_BINARY_DIR}/${DEPENDENCY}
-        EXCLUDE_FROM_ALL
+    FetchContent_Declare(${_dep_lower}
+        GIT_REPOSITORY ${_repo_url}
+        GIT_TAG ${_branch}
+        GIT_PROGRESS TRUE
+        DOWNLOAD_EXTRACT_TIMESTAMP TRUE
     )
+    FetchContent_MakeAvailable(${_dep_lower})
 endfunction()
 
 

test/golden_record/compare_golden_results.sh

@@ -57,8 +57,17 @@ compare_cases() {
 
     for CASE in $TEST_CASES; do
         total_cases=$((total_cases + 1))
-
         echo "Comparing $CASE case..."
+
+        if [ ! -d "$REFERENCE_DIR/$CASE" ]; then
+            echo "  ⚠ Skipping (missing in reference run)"
+            continue
+        fi
+        if [ ! -d "$CURRENT_DIR/$CASE" ]; then
+            echo "  ✗ Current run missing directory: $CURRENT_DIR/$CASE"
+            missing_cases=$((missing_cases + 1))
+            continue
+        fi
 
         # Check if this is the classifier_fast case with multiple files
         if [ "$CASE" = "classifier_fast" ]; then
@@ -134,4 +143,4 @@ else
     echo "Some tests failed or had missing files."
 fi
 
-exit $exit_code
+exit $exit_code