import unittest
import importlib
import re
import io
import contextlib


class TestTask(unittest.TestCase):
    def test_classes_exist(self):
        import user_code
        importlib.reload(user_code)

        Weapon = getattr(user_code, "Weapon", None)
        Warrior = getattr(user_code, "Warrior", None)

        _dynamic_test(
            self,
            Weapon is not None and Warrior is not None,
            "Weapon and Warrior classes exist",
            "Weapon and Warrior classes missing",
        )

    def test_weapon_init(self):
        import user_code
        importlib.reload(user_code)

        Weapon = getattr(user_code, "Weapon", None)
        sword = Weapon("Sword", 5)

        _dynamic_test(
            self,
            hasattr(sword, "name") and hasattr(sword, "attack"),
            "Weapon has name and attack attributes",
            "Weapon missing name or attack attribute",
        )
        _dynamic_test(
            self,
            sword.name == "Sword" and sword.attack == 5,
            "Weapon stores name and attack correctly",
            f"Expected ('Sword', 5), got ({getattr(sword,'name',None)}, {getattr(sword,'attack',None)})",
        )

    def test_warrior_init(self):
        import user_code
        importlib.reload(user_code)

        Warrior = getattr(user_code, "Warrior", None)
        w = Warrior("Conan")

        _dynamic_test(
            self,
            hasattr(w, "name") and w.name == "Conan",
            "Warrior stores name correctly",
            "Warrior missing name or stores it incorrectly",
        )
        _dynamic_test(
            self,
            hasattr(w, "weapon") and w.weapon is None,
            "Warrior starts unarmed (weapon is None)",
            "Warrior weapon should start as None",
        )

    def test_equip_weapon_composition(self):
        import user_code
        importlib.reload(user_code)

        Weapon = getattr(user_code, "Weapon", None)
        Warrior = getattr(user_code, "Warrior", None)

        sword = Weapon("Sword", 5)
        w = Warrior("Conan")
        w.equip_weapon(sword)

        _dynamic_test(
            self,
            hasattr(w, "weapon") and w.weapon is sword,
            "Warrior equips weapon via composition",
            "Weapon not equipped correctly (should store the same object)",
        )

    def test_show_weapon_output_unarmed(self):
        import user_code
        importlib.reload(user_code)

        Warrior = getattr(user_code, "Warrior", None)
        w = Warrior("Conan")

        out = _capture_print(w.show_weapon)
        expected = normalize_text("Conan is unarmed")

        _dynamic_test(
            self,
            normalize_text(out) == expected,
            "show_weapon prints unarmed message",
            f"Expected '{expected}', got '{normalize_text(out)}'",
        )

    def test_show_weapon_output_armed(self):
        import user_code
        importlib.reload(user_code)

        Weapon = getattr(user_code, "Weapon", None)
        Warrior = getattr(user_code, "Warrior", None)

        sword = Weapon("Sword", 5)
        w = Warrior("Conan")
        w.equip_weapon(sword)

        out = _capture_print(w.show_weapon)
        expected = normalize_text("Conan is holding a Sword")

        _dynamic_test(
            self,
            normalize_text(out) == expected,
            "show_weapon prints armed message",
            f"Expected '{expected}', got '{normalize_text(out)}'",
        )


def _capture_print(func, *args, **kwargs) -> str:
    buf = io.StringIO()
    with contextlib.redirect_stdout(buf):
        func(*args, **kwargs)
    return buf.getvalue().strip()


def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)


def normalize_text(text: str) -> str:
    text = text.strip().lower()
    text = re.sub(r"\s{2,}", " ", text)
    return text


if __name__ == "__main__":
    unittest.main()

test_main.py

Pythonのオブジェクト指向プログラミングを用いて、クリーンで安全かつスケーラブルなアプリケーションの構築方法を学びます。クラスとオブジェクトの基礎から始まり、継承、コンポジション、多態性、カプセル化などの高度な概念に進みます。明確な解説と実践的な例を通じて、強力で保守性が高く、実用的なPythonプログラムを設計する能力を身につけます。

Pythonにおけるオブジェクト指向プログラミングの基本的な構成要素を学びます。このセクションでは、クラス、オブジェクト、メソッド、変数について取り上げ、OOPがどのようにコードを整理・構造化するかの確かな基礎を提供します。

チャレンジ：合成された戦士の構築

解答