function(add_cli_exe T)
    add_executable(${T} ${ARGN} ${CLI11_headers})
    target_link_libraries(${T} PUBLIC CLI11)
    set_target_properties(
         ${T} PROPERTIES
         FOLDER "Examples"
         )

    if(CLANG_TIDY_EXE)
    set_target_properties(
        ${T} PROPERTIES
        CXX_CLANG_TIDY "${DO_CLANG_TIDY}"
        )
    endif()
endfunction()

option(CLI11_EXAMPLE_JSON OFF)
if(CLI11_EXAMPLE_JSON)
    if(NOT EXISTS "${CLI11_SOURCE_DIR}/extern/json/single_include/nlohmann/json.hpp")
        message(ERROR "You are missing the json package for CLI11_EXAMPLE_JSON. Please update your submodules (git submodule update --init)")
    endif()
    if(CMAKE_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8)
        message(WARNING "The json example requires GCC 4.8+ (requirement on json library)")
    endif()
    add_cli_exe(json json.cpp)
    target_include_directories(json PUBLIC SYSTEM "${CLI11_SOURCE_DIR}/extern/json/single_include")

    add_test(NAME json_config_out COMMAND json --item 2)
    set_property(TEST json_config_out PROPERTY PASS_REGULAR_EXPRESSION
        "{"
        "\"item\": \"2\""
        "\"simple\": false"
        "}")

    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/input.json" [=[{"item":3,"simple":false}]=])
    add_test(NAME json_config_in COMMAND json --config "${CMAKE_CURRENT_BINARY_DIR}/input.json")
    set_property(TEST json_config_in PROPERTY PASS_REGULAR_EXPRESSION
        "{"
        "\"item\": \"3\""
        "\"simple\": false"
        "}")
endif()

add_cli_exe(simple simple.cpp)
add_test(NAME simple_basic COMMAND simple)
add_test(NAME simple_all COMMAND simple -f filename.txt -c 12 --flag --flag -d 1.2)
set_property(TEST simple_all PROPERTY PASS_REGULAR_EXPRESSION
    "Working on file: filename.txt, direct count: 1, opt count: 1"
    "Working on count: 12, direct count: 1, opt count: 1"
    "Received flag: 2 (2) times"
    "Some value: 1.2")


add_cli_exe(subcommands subcommands.cpp)
add_test(NAME subcommands_none COMMAND subcommands)
set_property(TEST subcommands_none PROPERTY
    PASS_REGULAR_EXPRESSION "A subcommand is required")
add_test(NAME subcommands_all COMMAND subcommands --random start --file name stop --count)
set_property(TEST subcommands_all PROPERTY PASS_REGULAR_EXPRESSION
    "Working on --file from start: name"
    "Working on --count from stop: 1, direct count: 1"
    "Count of --random flag: 1"
    "Subcommand: start"
    "Subcommand: stop")

add_cli_exe(subcom_partitioned subcom_partitioned.cpp)
add_test(NAME subcom_partitioned_none COMMAND subcom_partitioned)
set_property(TEST subcom_partitioned_none PROPERTY PASS_REGULAR_EXPRESSION
    "This is a timer:"
    "--file is required"
    "Run with --help for more information.")

add_test(NAME subcom_partitioned_all COMMAND subcom_partitioned --file this --count --count -d 1.2)
set_property(TEST subcom_partitioned_all PROPERTY PASS_REGULAR_EXPRESSION
    "This is a timer:"
    "Working on file: this, direct count: 1, opt count: 1"
    "Working on count: 2, direct count: 2, opt count: 2"
    "Some value: 1.2")
    # test shows that the help prints out for unnamed subcommands
add_test(NAME subcom_partitioned_help COMMAND subcom_partitioned --help)
set_property(TEST subcom_partitioned_help PROPERTY PASS_REGULAR_EXPRESSION
    "-f,--file TEXT REQUIRED"
    "-d,--double FLOAT")

add_cli_exe(option_groups option_groups.cpp)
add_test(NAME option_groups_missing COMMAND option_groups )
set_property(TEST option_groups_missing PROPERTY PASS_REGULAR_EXPRESSION
    "Exactly 1 option from"
    "is required")
add_test(NAME option_groups_extra COMMAND option_groups --csv --binary)
set_property(TEST option_groups_extra PROPERTY PASS_REGULAR_EXPRESSION
    "and 2 were given")
add_test(NAME option_groups_extra2 COMMAND option_groups --csv --address "192.168.1.1" -o "test.out")
set_property(TEST option_groups_extra2 PROPERTY PASS_REGULAR_EXPRESSION
    "at most 1")

add_cli_exe(positional_arity positional_arity.cpp)
add_test(NAME positional_arity1 COMMAND positional_arity one )
set_property(TEST positional_arity1 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one")
add_test(NAME positional_arity2 COMMAND positional_arity one two )
set_property(TEST positional_arity2 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one"
    "File 2 = two")
add_test(NAME positional_arity3 COMMAND positional_arity 1 2 one)
set_property(TEST positional_arity3 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one")
add_test(NAME positional_arity_fail COMMAND positional_arity 1 one two)
set_property(TEST positional_arity_fail PROPERTY PASS_REGULAR_EXPRESSION
    "Could not convert")

    add_cli_exe(positional_validation positional_validation.cpp)
add_test(NAME positional_validation1 COMMAND positional_validation one )
set_property(TEST positional_validation1 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one")
add_test(NAME positional_validation2 COMMAND positional_validation one 1 2 two )
set_property(TEST positional_validation2 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one"
    "File 2 = two")
add_test(NAME positional_validation3 COMMAND positional_validation 1 2 one)
set_property(TEST positional_validation3 PROPERTY PASS_REGULAR_EXPRESSION
    "File 1 = one")
add_test(NAME positional_validation4 COMMAND positional_validation 1 one two 2)
set_property(TEST positional_validation4 PROPERTY PASS_REGULAR_EXPRESSION
     "File 1 = one"
    "File 2 = two")

add_cli_exe(shapes shapes.cpp)
add_test(NAME shapes_all COMMAND shapes circle 4.4 circle 10.7 rectangle 4 4 circle 2.3 triangle 4.5 ++ rectangle 2.1 ++ circle 234.675)
set_property(TEST shapes_all PROPERTY PASS_REGULAR_EXPRESSION
    "circle2"
    "circle4"
    "rectangle2 with edges [2.1,2.1]"
    "triangel1 with sides [4.5]")

add_cli_exe(ranges ranges.cpp)
add_test(NAME ranges_range COMMAND ranges --range 1 2 3)
set_property(TEST ranges_range PROPERTY PASS_REGULAR_EXPRESSION
    "[2:1:3]")
add_test(NAME ranges_minmax COMMAND ranges --min 2 --max 3)
set_property(TEST ranges_minmax PROPERTY PASS_REGULAR_EXPRESSION
    "[2:1:3]")
add_test(NAME ranges_error COMMAND ranges --min 2 --max 3 --step 1 --range 1 2 3)
set_property(TEST ranges_error PROPERTY PASS_REGULAR_EXPRESSION
    "Exactly 1 option from")

add_cli_exe(validators validators.cpp)
add_test(NAME validators_help COMMAND validators --help)
set_property(TEST validators_help PROPERTY PASS_REGULAR_EXPRESSION
    "  -f,--file TEXT:FILE[\\r\\n\\t ]+File name"
    "  -v,--value INT:INT in [3 - 6][\\r\\n\\t ]+Value in range")
add_test(NAME validators_file COMMAND validators --file nonex.xxx)
set_property(TEST validators_file PROPERTY PASS_REGULAR_EXPRESSION
    "--file: File does not exist: nonex.xxx"
    "Run with --help for more information.")
add_test(NAME validators_plain COMMAND validators --value 9)
set_property(TEST validators_plain PROPERTY PASS_REGULAR_EXPRESSION
    "--value: Value 9 not in range 3 to 6"
    "Run with --help for more information.")

add_cli_exe(groups groups.cpp)
add_test(NAME groups_none COMMAND groups)
set_property(TEST groups_none PROPERTY PASS_REGULAR_EXPRESSION
    "This is a timer:"
    "--file is required"
    "Run with --help for more information.")
add_test(NAME groups_all COMMAND groups --file this --count --count -d 1.2)
set_property(TEST groups_all PROPERTY PASS_REGULAR_EXPRESSION
    "This is a timer:"
    "Working on file: this, direct count: 1, opt count: 1"
    "Working on count: 2, direct count: 2, opt count: 2"
    "Some value: 1.2")

add_cli_exe(inter_argument_order inter_argument_order.cpp)
add_test(NAME inter_argument_order COMMAND inter_argument_order --foo 1 2 3 --x --bar 4 5 6 --z --foo 7 8)
set_property(TEST inter_argument_order PROPERTY PASS_REGULAR_EXPRESSION
    [=[foo : 1
foo : 2
foo : 3
bar : 4
bar : 5
bar : 6
foo : 7
foo : 8]=])

add_cli_exe(prefix_command prefix_command.cpp)
add_test(NAME prefix_command COMMAND prefix_command -v 3 2 1 -- other one two 3)
set_property(TEST prefix_command PROPERTY PASS_REGULAR_EXPRESSION
    "Prefix: 3 : 2 : 1"
    "Remaining commands: other one two 3")

add_cli_exe(callback_passthrough callback_passthrough.cpp)
add_test(NAME callback_passthrough1 COMMAND callback_passthrough --argname t2 --t2 test)
set_property(TEST callback_passthrough1 PROPERTY PASS_REGULAR_EXPRESSION
    "the value is now test")
add_test(NAME callback_passthrough2 COMMAND callback_passthrough --arg EEEK --argname arg)
set_property(TEST callback_passthrough2 PROPERTY PASS_REGULAR_EXPRESSION
    "the value is now EEEK")

add_cli_exe(enum enum.cpp)
add_test(NAME enum_pass COMMAND enum -l 1)
add_test(NAME enum_fail COMMAND enum -l 4)
set_property(TEST enum_fail PROPERTY PASS_REGULAR_EXPRESSION
    "--level: Check 4 value in {" "FAILED")

add_cli_exe(digit_args digit_args.cpp)
add_test(NAME digit_args COMMAND digit_args -h)
set_property(TEST digit_args PROPERTY PASS_REGULAR_EXPRESSION
    "-3{3}")

add_cli_exe(modhelp modhelp.cpp)
add_test(NAME modhelp COMMAND modhelp -a test -h)
set_property(TEST modhelp PROPERTY PASS_REGULAR_EXPRESSION
    "Option -a string in help: test")

add_subdirectory(subcom_in_files)
add_test(NAME subcom_in_files COMMAND subcommand_main subcommand_a -f this.txt --with-foo)
set_property(TEST subcom_in_files PROPERTY PASS_REGULAR_EXPRESSION
    "Working on file: this\.txt"
    "Using foo!")

add_cli_exe(formatter formatter.cpp)

add_cli_exe(nested nested.cpp)

add_cli_exe(subcom_help subcom_help.cpp)
add_test(NAME subcom_help_normal COMMAND subcom_help sub --help)
add_test(NAME subcom_help_reversed COMMAND subcom_help --help sub)