import unittest
from contextlib import redirect_stdout
import io
import importlib
import user_code
import ast

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)

class TestUserCode(unittest.TestCase):
    def test_variables_declared(self):
        """Check if all required variables are declared."""
        variables = ['steps_taken', 'step_goal', 'calories_burned', 'calorie_goal', 'result_message']
        missing_vars = [var for var in variables if not hasattr(user_code, var)]
        
        _dynamic_test(
            self,
            not missing_vars,
            "All required variables are declared.",
            f"Missing variable(s): {', '.join(missing_vars)}."
        )

    def test_variables_types(self):
        """Check if variables have the correct data types."""
        expected_types = {
            'steps_taken': int,
            'step_goal': int,
            'calories_burned': int,
            'calorie_goal': int,
            'result_message': bool
        }
        incorrect_types = {
            var: type(getattr(user_code, var)) 
            for var in expected_types if not isinstance(getattr(user_code, var), expected_types[var])
        }

        _dynamic_test(
            self,
            not incorrect_types,
            "All variables have the correct data types.",
            f"Incorrect data types detected: {incorrect_types}."
        )

    def test_result_message_logic(self):
        """Check if `result_message` is set correctly based on conditions."""
        # Extract values from user_code
        steps_taken = user_code.steps_taken
        step_goal = user_code.step_goal
        calories_burned = user_code.calories_burned
        calorie_goal = user_code.calorie_goal

        # Expected logic using `or`
        expected_value = steps_taken >= step_goal or calories_burned >= calorie_goal

        _dynamic_test(
            self,
            user_code.result_message == expected_value,
            f"The `result_message` variable is correctly set to {expected_value}.",
            f"Incorrect value for `result_message`. Expected {expected_value}, but got {user_code.result_message}."
        )

    def test_if_statement_is_single_and_uses_or(self):
        with open("user_code.py", "r") as f:
            tree = ast.parse(f.read())

        # Count all top-level `if` statements
        if_statements = [node for node in ast.walk(tree) if isinstance(node, ast.If)]

        # Check if at least one if statement contains an `or` operator
        or_found = any(
            isinstance(cond, ast.BoolOp) and isinstance(cond.op, ast.Or)
            for if_node in if_statements
            for cond in ast.walk(if_node.test)
        )

        _dynamic_test(
            self,
            len(if_statements) == 1 and or_found,
            "The solution correctly uses a single `if` statement with the `or` operator.",
            "The solution must use exactly one `if` statement and include the `or` operator."
        )

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


test_main.py

Pythonにおける条件分岐if-else演算子の微妙な違いを、明確な解説と実践的な例を通じて探求します。各概念を強化するハンズオン課題で理解を深め、より複雑な意思決定のためにif-elif-else文を効果的に使用する方法を学びます。

条件分岐のif演算子の多様性と、そのプログラム結果への影響力を理解します。論理演算子の世界を深く掘り下げ、実践的な活用方法を習得し、優先順位付けによって明確かつ効率的なコードを書く方法を学びます。

条件に基づいて意思決定を行う方法を学び、elseキーワードを使用してコードを簡素化し、効率性と可読性の両方を向上させます。三項演算子によるワンライナーでの意思決定の効率性を引き出します。

最も高度な条件文であるif-elif-elseについて学びます。その構文に慣れ、複数の意思決定シナリオをプログラムで正しく処理するための使い方を習得します。

チャレンジ：フィットネストラッカーのロジックを簡素化する

解答