import unittest
import importlib
import re
import user_code  # Import user's solution

# Helper function for dynamic test naming and assertions
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 = ['heart_rate', 'zone']
        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 = {
            'heart_rate': int,
            'zone': str
        }
        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_heart_rate_zone_logic(self):
        """Check if `zone` is assigned correctly based on `heart_rate`."""
        heart_rate = user_code.heart_rate

        if heart_rate >= 150:
            expected_zone = "Max Zone"
        elif heart_rate >= 100:
            expected_zone = "Cardio Zone"
        elif heart_rate >= 60:
            expected_zone = "Fat-Burning Zone"
        else:
            expected_zone = "Resting Zone"

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

    def test_if_elif_used(self):
        """Check if `if` and `elif` statements are correctly used instead of multiple `if` statements."""
        with open("user_code.py", "r") as file:
            user_code_source = file.read()

        if_statements = re.findall(r'^\s*if\s+', user_code_source, re.MULTILINE)
        elif_statements = re.findall(r'^\s*elif\s+', user_code_source, re.MULTILINE)

        _dynamic_test(
            self,
            len(if_statements) == 1 and len(elif_statements) > 0,
            "The `if-elif` structure is correctly used.",
            "Detected multiple `if` statements instead of a structured `if-elif` chain."
        )

    def test_else_used(self):
        """Check if `else` is correctly used to cover remaining cases."""
        with open("user_code.py", "r") as file:
            user_code_source = file.read()

        else_statements = re.findall(r'^\s*else\s*:', user_code_source, re.MULTILINE)

        _dynamic_test(
            self,
            len(else_statements) == 1,
            "The `else` statement is correctly used.",
            "Expected an `else` statement to handle remaining cases, but none was found."
        )

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：コードロジックのデバッグと改善

解答