class TestFrequentLetter(TestCase):
def setUp(self):
self.stattext = Stattext()
def do_most_common_letter(self, text):
file_content = io.StringIO(text)
return self.stattext.most_common_letter(file_content)
def test_ascii_count(self):
text = "a"*2 + "b"*5
result = self.do_most_common_letter(text)
expected = "b"
self.assertEqual(result, expected)
def test_ascii_count_multi_line(self):
text = "a"*2 + "b"*5 +"\n"+"a"*5
result = self.do_most_common_letter(text)
expected = "a"
self.assertEqual(result, expected)
def test_ignore_digits(self):
text = "a1111\n232"
result = self.do_most_common_letter(text)
expected = "a"
self.assertEqual(result, expected)
def test_empty_file(self):
text = ""
result = self.do_most_common_letter(text)
self.assertIsNone(result)
def test_empty_line(self):
text = "\n\n\n"
result = self.do_most_common_letter(text)
self.assertIsNone(result)
def test_file_only_spaces(self):
text = " \n \r\n"
result = self.do_most_common_letter(text)
self.assertIsNone(result)
def test_ignore_punctuaction(self):
text = "hello, world:\n?!:;.'"
result = self.do_most_common_letter(text)
expected = "l"
self.assertEqual(result, expected)
def test_upper_case_ignored(self):
text = "BBb"
result = self.do_most_common_letter(text)
expected = "b"
self.assertEqual(result, expected)
def test_many_most_common_letter(self):
text = "test is done"
result = self.do_most_common_letter(text)
expected = ['e','s','t']
self.assertEqual(sorted(result.replace(" ","")), expected)
def test_unicode_text(self):
text = "Thíś íś ṕŕéttӳ fúń"
result = self.do_most_common_letter(text)
expected = "t"
self.assertEqual(result, expected)
