def test_empty(self): self.assertEqual(unique_characters(''), [])
def test_none_type(self): self.assertEqual(unique_characters(None), 0)
def test_unique_chars(self): self.assertEqual(unique_chars.unique_characters("baaaanagram"), ['b', 'a', 'n', 'g', 'r', 'm'])
def test_string(self): self.assertTrue(unique_characters("anagram"))
def test_number_input(self): self.assertFalse(unique_characters(2))
def test_unique_characters_None(self): self.assertFalse(unique_characters())
def test_unique_characters_empty_string(self): self.assertFalse(unique_characters(''))
def test_duplicated_letter(self): self.assertEqual(unique_characters("aa"), [])
def test_duplicated_letter_and_single_letter(self): self.assertEqual(unique_characters("aab"), ["b"])
def test_if_different_words(self): self.assertEqual( unique_chars.unique_characters("these are different words"), ['t', 'h', 'e', 's', 'a', 'r', 'd', 'i', 'f', 'n', 'w', 'o'])
def test_if_only_same_letters(self): self.assertEqual(unique_chars.unique_characters("aaaaaaaa"), ["a"])
def test_removing_same_letters(self): self.assertEqual(unique_chars.unique_characters("anagram"), ["n", "g", "r", "m"])
def test_empty_string(self): self.assertEqual(unique_chars.unique_characters(''), [])
def test_for_None(self): self.assertFalse(unique_chars.unique_characters(None))
def test_one_letter(self): self.assertEqual(unique_characters("a"), ['a'])
def test_one_letter_string(self): self.assertEqual(unique_characters("a"), ["a"])
def test_empty_input(self): self.assertFalse(unique_characters(""))
def unique_characters(self): self.assertEqual(unique_chars.unique_characters(""), "")
def test_unique(self): self.assertTrue(unique_characters('alma'))
def test_three_letter(self): self.assertEqual(unique_chars.unique_characters("dog"), ["d", "o", "g"])
def test_result(self): self.assertEqual(unique_characters("anagram"), "'m', 'n', 'g', 'a', 'r'")
def test_three_letter_without_a(self): self.assertEqual(unique_chars.unique_characters("cat"), ["c", "t"])
def test_list(self): self.assertTrue(unique_characters("anagram"))
def test_empty_string(self): self.assertEqual(unique_chars.unique_characters(""), False)
def test_all_unique_chars(self): self.assertEqual(unique_characters("elmegyek"), ['l', 'm', 'g', 'y', 'k'])
def test_one_letter(self): self.assertEqual(unique_chars.unique_characters("b"), ["b"])
def test_upper_or_lower(self): self.assertNotEquals(unique_chars.unique_characters("baaaanagram"), ['B', 'A', 'N', 'G', 'R', 'M'])
def test_no_unique_letter_in_word(self): self.assertEqual(unique_characters("aabb"), [])
def test_not_enought_chars(self): self.assertNotEquals(unique_chars.unique_characters("banaagram"), ['a', 'n', 'g', 'r', 'm'])
def test_two_same_letters_with_more(self): self.assertEqual(unique_characters("abrakadabra"), ['k', 'd'])