macro(check_custom_prop suffix)
  set(vcProjectFile "${RunCMake_TEST_BINARY_DIR}/foo.vcxproj${suffix}")
  if(NOT EXISTS "${vcProjectFile}")
    set(RunCMake_TEST_FAILED "Project file ${vcProjectFile} does not exist.")
    return()
  endif()

  set(importFound FALSE)

  set(props_file "${RunCMake_SOURCE_DIR}/my.props")
  file(TO_NATIVE_PATH "${props_file}" check_file)
  file(STRINGS "${vcProjectFile}" lines)
  foreach(line IN LISTS lines)
    if(line MATCHES "^ *<Import Project=\"([^\"]+)\".*Label=\"([^\"]+)\".*$")
      if("${CMAKE_MATCH_1}" STREQUAL "${check_file}" AND
        "${CMAKE_MATCH_2}" STREQUAL "LocalAppDataPlatform")
          message(STATUS "foo.vcxproj${suffix} is importing ${check_file}")
          set(importFound TRUE)
      endif()
    endif()
  endforeach()

  if(NOT importFound)
    set(RunCMake_TEST_FAILED "Import of custom .props file not found.")
    return()
  endif()
endmacro()

check_custom_prop("")
check_custom_prop(".filters")