Tests command_line_filtering and shuffle_integration fail on Windows (BAD_COMMAND)

[mathomp4]

Summary

When running ctest on Windows (both MinGW gfortran and Intel ifx), two tests fail with BAD_COMMAND:

• command_line_filtering
• shuffle_integration

Root Cause

In tests/funit-core/CMakeLists.txt:141-160:

add_test(NAME command_line_filtering
  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/test_command_line_filtering.sh 
          ${CMAKE_CURRENT_BINARY_DIR}/filter_cmdline_tests.x
  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
...
add_test(NAME shuffle_integration
  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/test_shuffle.sh
          ${CMAKE_CURRENT_BINARY_DIR}/shuffle_int_tests.x
  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)

On Windows, CTest uses CreateProcess(), which cannot invoke .sh shell scripts directly as executables, resulting in:

[inappropriate file type or format]
***Not Run (BAD_COMMAND)

Furthermore, test_command_line_filtering.sh tests regex filtering (-f/-e), which is disabled on Windows (#ifndef _WIN32).

Suggested Fix

Guard these tests with if (NOT WIN32) in tests/funit-core/CMakeLists.txt (similar to how Test_RegexFilter.pf is guarded).