cmake_policy(SET CMP0057 NEW)
function(run_cpack_test_common_for_merge_ TEST_NAME types build source)
  if(TEST_TYPE IN_LIST types)
    set(RunCMake_TEST_NO_CLEAN TRUE)
    set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/${TEST_NAME}-build")

     # TODO this should be executed only once per ctest run (not per generator)
    file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
    file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")

    if(EXISTS "${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-Prerequirements.cmake")
      include("${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-Prerequirements.cmake")

      set(FOUND_PREREQUIREMENTS false)
      get_test_prerequirements("FOUND_PREREQUIREMENTS"
          "${TEST_CONFIG_DIR}/${type}_config.cmake")

      # skip the test if prerequirements are not met
      if(NOT FOUND_PREREQUIREMENTS)
        message(STATUS "${TEST_NAME} - SKIPPED")
        return()
      endif()
    endif()

    # execute cmake
    set(RunCMake_TEST_OPTIONS "-DGENERATOR_TYPE=${TEST_TYPE}")
    run_cmake(${TEST_NAME})

    # execute optional build step
    if(build)
      run_cmake_command(${TEST_NAME}-Build "${CMAKE_COMMAND}" --build "${RunCMake_TEST_BINARY_DIR}")
    endif()

    if(source)
      set(pack_params_ -G ${TEST_TYPE} --config ./CPackSourceConfig.cmake)
      FILE(APPEND ${RunCMake_TEST_BINARY_DIR}/CPackSourceConfig.cmake
        "\nset(CPACK_RPM_SOURCE_PKG_BUILD_PARAMS \"-DRunCMake_TEST:STRING=${TEST_NAME}\")")
    else()
      unset(pack_params_)
    endif()

    # execute cpack
    execute_process(
      COMMAND ${CMAKE_CPACK_COMMAND} ${pack_params_}
      WORKING_DIRECTORY "${RunCMake_TEST_BINARY_DIR}"
      RESULT_VARIABLE "result_"
      OUTPUT_FILE "${RunCMake_TEST_BINARY_DIR}/test_output.txt"
      ERROR_FILE "${RunCMake_TEST_BINARY_DIR}/test_error.txt"
      )

    # verify result
    run_cmake_command(
      ${TEST_TYPE}/${TEST_NAME}
      "${CMAKE_COMMAND}"
        -DRunCMake_TEST=${TEST_NAME}
        -DGENERATOR_TYPE=${TEST_TYPE}
        -DPACKAGING_RESULT=${result_}
        "-Dsrc_dir=${RunCMake_SOURCE_DIR}"
        "-Dbin_dir=${RunCMake_TEST_BINARY_DIR}"
        "-Dconfig_file=${config_file}"
        -P "${RunCMake_SOURCE_DIR}/VerifyResult.cmake"
      )
  endif()
endfunction()
function(run_cpack_source_test TEST_NAME types)
  run_cpack_test_common_for_merge_("${TEST_NAME}" "${types}" false true)
endfunction()

function(run_cpack_test_common_ TEST_NAME types build SUBTEST_SUFFIX)
  if(TEST_TYPE IN_LIST types)
    set(RunCMake_TEST_NO_CLEAN TRUE)
    set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/${TEST_NAME}-build")
    set(full_test_name_ "${TEST_NAME}")

    if(SUBTEST_SUFFIX)
      set(RunCMake_TEST_BINARY_DIR "${RunCMake_TEST_BINARY_DIR}-${SUBTEST_SUFFIX}-subtest")
      set(full_test_name_ "${full_test_name_}-${SUBTEST_SUFFIX}-subtest")
    endif()

     # TODO this should be executed only once per ctest run (not per generator)
    file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
    file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")

    if(EXISTS "${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-Prerequirements.cmake")
      include("${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-Prerequirements.cmake")

      set(FOUND_PREREQUIREMENTS false)
      get_test_prerequirements("FOUND_PREREQUIREMENTS"
          "${TEST_CONFIG_DIR}/${type}_config.cmake")

      # skip the test if prerequirements are not met
      if(NOT FOUND_PREREQUIREMENTS)
        message(STATUS "${TEST_NAME} - SKIPPED")
        return()
      endif()
    endif()

    # execute cmake
    set(RunCMake_TEST_OPTIONS "-DGENERATOR_TYPE=${TEST_TYPE}"
      "-DRunCMake_TEST_FILE_PREFIX=${TEST_NAME}"
      "-DRunCMake_SUBTEST_SUFFIX=${SUBTEST_SUFFIX}")
    run_cmake(${full_test_name_})

    # execute optional build step
    if(build)
      run_cmake_command(${full_test_name_}-Build "${CMAKE_COMMAND}" --build "${RunCMake_TEST_BINARY_DIR}")
    endif()

    # execute cpack
    execute_process(
      COMMAND "${CMAKE_CPACK_COMMAND}"
      WORKING_DIRECTORY "${RunCMake_TEST_BINARY_DIR}"
      OUTPUT_FILE "${RunCMake_TEST_BINARY_DIR}/test_output.txt"
      ERROR_FILE "${RunCMake_TEST_BINARY_DIR}/test_error.txt"
      )

    foreach(o out err)
      if(SUBTEST_SUFFIX AND EXISTS ${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-${SUBTEST_SUFFIX}-std${o}.txt)
        set(RunCMake-std${o}-file "${TEST_TYPE}/${TEST_NAME}-${SUBTEST_SUFFIX}-std${o}.txt")
      elseif(EXISTS ${RunCMake_SOURCE_DIR}/${TEST_TYPE}/${TEST_NAME}-std${o}.txt)
        set(RunCMake-std${o}-file "${TEST_TYPE}/${TEST_NAME}-std${o}.txt")
      endif()
    endforeach()

    # verify result
    run_cmake_command(
      ${TEST_TYPE}/${full_test_name_}
      "${CMAKE_COMMAND}"
        -DRunCMake_TEST=${full_test_name_}
        -DRunCMake_TEST_FILE_PREFIX=${TEST_NAME}
        -DRunCMake_SUBTEST_SUFFIX=${SUBTEST_SUFFIX}
        -DGENERATOR_TYPE=${TEST_TYPE}
        "-Dsrc_dir=${RunCMake_SOURCE_DIR}"
        "-Dbin_dir=${RunCMake_TEST_BINARY_DIR}"
        "-Dconfig_file=${config_file}"
        -P "${RunCMake_SOURCE_DIR}/VerifyResult.cmake"
      )
  endif()
endfunction()

function(run_cpack_test TEST_NAME types build)
  run_cpack_test_common_("${TEST_NAME}" "${types}" "${build}" "")
endfunction()

function(run_cpack_test_subtests TEST_NAME SUBTEST_SUFFIXES types build)
  foreach(suffix_ IN LISTS SUBTEST_SUFFIXES)
    run_cpack_test_common_("${TEST_NAME}" "${types}" "${build}" "${suffix_}")
  endforeach()
endfunction()