function(test_string_command testname expected_result)
  message("testname=[${testname}]")

  execute_process(
    COMMAND ${CMAKE_COMMAND}
      -D "testname:STRING=${testname}"
      -P "@CMAKE_CURRENT_SOURCE_DIR@/StringTestScript.cmake"
    OUTPUT_VARIABLE out
    ERROR_VARIABLE err
    RESULT_VARIABLE result
    OUTPUT_STRIP_TRAILING_WHITESPACE
    ERROR_STRIP_TRAILING_WHITESPACE
    )

  message("out=[${out}]")
  message("err=[${err}]")

  if(expected_result STREQUAL "fail")
    # case expected to fail, result should be non-0...
    # error if it's 0
    if("${result}" STREQUAL "0")
      message(SEND_ERROR "StringTestScript failed: testname='${testname}' [${result}] actually passed, but expected to fail...")
    endif()
  else()
    # case expected to pass, result should be 0...
    # error if it's non-0
    if(NOT "${result}" STREQUAL "0")
      message(SEND_ERROR "StringTestScript failed: testname='${testname}' [${result}] actually failed, but expected to pass...")
   endif()
  endif()

  message("")
endfunction()


test_string_command(empty fail)
test_string_command(bogus fail)
test_string_command(random pass)
test_string_command(toupper_no_variable fail)
test_string_command(ascii_no_variable fail)
test_string_command(ascii_bad_code fail)
test_string_command(configure_no_input fail)
test_string_command(configure_no_variable fail)
test_string_command(configure_escape_quotes pass)
test_string_command(configure_bogus fail)
test_string_command(regex_no_mode fail)
test_string_command(regex_match_not_enough_args fail)
test_string_command(regex_matchall_not_enough_args fail)
test_string_command(regex_replace_not_enough_args fail)
test_string_command(regex_bogus_mode fail)
test_string_command(regex_match_multiple_inputs pass)
test_string_command(regex_match_bad_regex fail)
test_string_command(regex_match_empty_string fail)
test_string_command(regex_matchall_multiple_inputs pass)
test_string_command(regex_matchall_bad_regex fail)
test_string_command(regex_matchall_empty_string fail)
test_string_command(regex_replace_ends_with_backslash fail)
test_string_command(regex_replace_ends_with_escaped_backslash pass)
test_string_command(regex_replace_has_linefeed pass)
test_string_command(regex_replace_has_bogus_escape fail)
test_string_command(regex_replace_bad_regex fail)
test_string_command(regex_replace_empty_string fail)
test_string_command(compare_no_mode fail)
test_string_command(compare_bogus_mode fail)
test_string_command(compare_not_enough_args fail)
test_string_command(replace_not_enough_args fail)
test_string_command(replace_multiple_inputs pass)
test_string_command(substring_not_enough_args fail)
test_string_command(substring_bad_begin fail)
test_string_command(substring_bad_end fail)
test_string_command(length_not_enough_args fail)


test_string_command(no_such_testname fail)