def test_no_arguments():
with pytest.raises(TypeError) as e_info:
calc_upper_lower()
def test_empty_string():
assert calc_upper_lower("") == None
def test_invalid_sentence_02():
assert calc_upper_lower("3432432432@!#") == "UPPER CASE 0\nLOWER CASE 0"
def test_invalid_sentence_01():
assert calc_upper_lower(
"#$$^%$%&@@#$~`!!!") == "UPPER CASE 0\nLOWER CASE 0"
def test_valid_sentence_02():
assert calc_upper_lower(
"Hello, Ronaldo!!!") == "UPPER CASE 2\nLOWER CASE 10"
def test_valid_sentence():
assert calc_upper_lower("Hello world!") == "UPPER CASE 1\nLOWER CASE 9"