"""
Test for -> First non-repeating character.
Created by Egor Kostan.
GitHub: https://github.com/ikostan
"""
# ALGORITHMS STRINGS SEARCH
import unittest
import allure
from parameterized import parameterized
from utils.log_func import print_log
from kyu_5.first_non_repeating_character.first_non_repeating_letter import (
first_non_repeating_letter
)
# pylint: disable-msg=R0801
[docs]
@allure.epic('5 kyu')
@allure.parent_suite('Novice')
@allure.suite("Algorithms")
@allure.sub_suite("Unit Tests")
@allure.feature("String")
@allure.story('First non-repeating character')
@allure.tag('ALGORITHMS',
'STRINGS',
'SEARCH')
@allure.link(
url='https://www.codewars.com/kata/52bc74d4ac05d0945d00054e',
name='Source/Kata')
# pylint: enable-msg=R0801
class FirstNonRepeatingLetterTestCase(unittest.TestCase):
"""Testing first_non_repeating_letter function."""
@parameterized.expand([
('a', 'a'),
('stress', 't'),
('moonmen', 'e'),
('', ''),
('abba', ''),
('aa', ''),
('~><#~><', '#'),
('hello world, eh?', 'w'),
('sTreSS', 'T'),
('Go hang a salami, I\'m a lasagna hog!', ',')])
def test_first_non_repeating_letter(self, string, expected):
"""
Testing a function named first_non_repeating_letter.
The function takes a string input, and returns the first character
that is not repeated anywhere in the string.
For example, if given the input 'stress', the function
should return 't', since the letter t only occurs once
in the string, and occurs first in the string.
As an added challenge, upper- and lowercase letters are
considered the same character, but the function should
return the correct case for the initial letter. For example,
the input 'sTreSS' should return 'T'.
If a string contains all repeating characters, it should
return an empty string ("") or None -- see sample tests.
:return:
"""
# pylint: disable-msg=R0801
allure.dynamic.title("Testing first_non_repeating_letter function")
allure.dynamic.severity(allure.severity_level.NORMAL)
allure.dynamic.description_html(
'<h3>Codewars badge:</h3>'
'<img src="https://www.codewars.com/users/myFirstCode'
'/badges/large">'
'<h3>Test Description:</h3>'
"<p></p>")
# pylint: enable-msg=R0801
with allure.step(f"Enter test string: {string} \
and verify the output: {expected}"):
print_log(string=string, expected=expected)
self.assertEqual(expected, first_non_repeating_letter(string))