Medium - Pytest example tests for is_plaindrome

test_pytest.py

"""Basic pytest for ``is_palindrome`` method."""

from typing import List

import pytest


def is_palindrome(string: str) -> bool:
    """Determine if a given string is a palindrome.

    :param str string: The string to process
    :return: True if given string is a palindrome, otherwise False
    :rtype: bool
    """
    return string == string[::-1]


@pytest.fixture
def palindromes() -> List[str]:
    """Pytest fixture which returns a list of palindromes.

    :return: A list of palindrome strings.
    :rtype: List[str]
    """
    return ["", "a", "aba", "ababa", "racecar"]


@pytest.fixture
def not_palindromes() -> List[str]:
    """Pytest fixture which returns a list of non-palindromes.

    :return: A list of non-palindrome strings.
    :rtype: List[str]
    """
    return ["ab", "abab", "abaa", "bbaa"]


def test_is_plaindrome(palindromes: List[str]):
    """Test true cases for ``is_palindrome``.

    :param List[str] palindromes: A list of palindrome strings
    """
    for value in palindromes:
        assert is_palindrome(value)


def test_not_is_palindrome(not_palindromes: List[str]):
    """Test false cases for ``is_plaindrome``.

    :param List[str] not_palindromes: A list of non-palindrome strings
    """
    for value in not_palindromes:
        assert not is_palindrome(value)