"""cobol_testgen --black-box CLI 参数解析测试"""

import os
import sys

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..")))

from cobol_testgen import _extract_black_box_args


def test_black_box_dir_consumed(tmp_path):
    d = tmp_path / "prog"
    d.mkdir()
    args = ["--black-box", str(d), "src.cbl", "out"]
    do, arg = _extract_black_box_args(args)
    assert do is True
    assert arg == str(d)
    assert args == ["src.cbl", "out"]


def test_black_box_bare_does_not_consume_source():
    args = ["--black-box", "src.cbl", "out"]
    do, arg = _extract_black_box_args(args)
    assert do is True
    assert arg is None
    assert args == ["src.cbl", "out"]


def test_black_box_equals_form():
    args = ["--black-box=bbdir", "src.cbl"]
    do, arg = _extract_black_box_args(args)
    assert do is True
    assert arg == "bbdir"
    assert args == ["src.cbl"]


def test_no_black_box():
    args = ["--no-black-box", "src.cbl"]
    do, arg = _extract_black_box_args(args)
    assert do is False
    assert arg is None
    assert args == ["src.cbl"]


def test_no_flags_leaves_args_untouched():
    args = ["src.cbl", "out"]
    do, arg = _extract_black_box_args(args)
    assert do is False
    assert arg is None
    assert args == ["src.cbl", "out"]