import unittest
import importlib
import re

# Helper function
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 setUp(self):
        self.module = importlib.import_module('user_code')
        importlib.reload(self.module)

    def test_remaining_tasks_is_declared(self):
        _dynamic_test(
            self,
            hasattr(self.module, 'remaining_tasks'),
            "The `remaining_tasks` variable is declared.",
            "Expected `remaining_tasks` variable to be declared."
        )

    def test_required_time_is_declared(self):
        _dynamic_test(
            self,
            hasattr(self.module, 'required_time'),
            "The `required_time` variable is declared.",
            "Expected `required_time` variable to be declared."
        )

    def test_remaining_tasks_is_integer(self):
        _dynamic_test(
            self,
            isinstance(getattr(self.module, 'remaining_tasks', None), int),
            "The `remaining_tasks` is of type `int`.",
            "Expected `remaining_tasks` to be of type `int`."
        )

    def test_required_time_is_integer(self):
        _dynamic_test(
            self,
            isinstance(getattr(self.module, 'required_time', None), int),
            "The `required_time` is of type `int`.",
            "Expected `required_time` to be of type `int`."
        )

    def test_remaining_tasks_correct_value(self):
        completed = 60 // 7
        expected_value = 10 - completed
        _dynamic_test(
            self,
            getattr(self.module, 'remaining_tasks', None) == expected_value,
            f"The `remaining_tasks` is `{expected_value}`.",
            f"Expected `remaining_tasks` to be `{expected_value}`, but got `{getattr(self.module, 'remaining_tasks', 'undefined')}`."
        )

    def test_required_time_correct_value(self):
        expected_value = 10 * 7
        _dynamic_test(
            self,
            getattr(self.module, 'required_time', None) == expected_value,
            f"The `required_time` is `{expected_value}`.",
            f"Expected `required_time` to be `{expected_value}`, but got `{getattr(self.module, 'required_time', 'undefined')}`."
        )

    def test_subtraction_used_for_remaining_tasks(self):
        with open('user_code.py', 'r') as file:
            user_code_source = re.sub(r'\s+', '', file.read())
        _dynamic_test(
            self,
            re.search(r'remaining_tasks=10-[\w_]+', user_code_source),
            "Subtraction is used for `remaining_tasks`.",
            "Expected subtraction to be used for `remaining_tasks`."
        )

    def test_multiplication_used_for_required_time(self):
        with open('user_code.py', 'r') as file:
            user_code_source = re.sub(r'\s+', '', file.read())
        multiplication_patterns = [
            r'required_time=10\*7',
            r'required_time=7\*10'
        ]
        _dynamic_test(
            self,
            any(re.search(pattern, user_code_source) for pattern in multiplication_patterns),
            "Multiplication is used for `required_time`.",
            "Expected multiplication to be used for `required_time` (10*7 or 7*10)."
        )

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

test_main.py

A focused, beginner-friendly course on working with numbers in Python. Learn about integers, floats, arithmetic operations, type conversion, and how to avoid common pitfalls when handling numerical data.

Challenge: Time Calculation in Python

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