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

Dette kursus er designet til at introducere dig til alle nuancerne af den betingede operator if-else. Kurset er fyldt med eksempler for bedre at forstå brugen af en sådan operator, samt opgaver til at konsolidere de erhvervede færdigheder. Her vil du også blive bekendt med if-elif-else udsagn.

Du vil afsløre mysterierne ved den alsidige betingede operator "if," og opdage dens kraft til at forme resultater. Dyk dybere ind i verdenen af logiske operatorer, mestre deres kunstfærdige anvendelse og afsløre hemmelighederne ved at prioritere deres brug effektivt.

Lær hvordan man træffer beslutninger baseret på betingelser, forenkler kode ved hjælp af else-nøgleordet, hvilket forbedrer både effektivitet og læsbarhed. Lås op for effektiviteten af énliniers beslutninger med den ternære operator!

Du vil lære om den mest avancerede form af den betingede operator if-elif-else, blive bekendt med syntaksen for denne konstruktion og hvordan den anvendes korrekt.

Udfordring: Forenkling af Fitness Tracker Logic

Løsning

Udfordring: Forenkling af Fitness Tracker Logic

Løsning