def test_equals_2(self):
self.assertEqual(lowercase_count('abcABC123'), 3)
def test_equals(self):
self.assertEqual(lowercase_count('abc'), 3)
def test_equals_5(self):
self.assertEqual(lowercase_count(
'ABC123!@#$%^&*()_-+=}{[]|\':;?/>.<,~'), 0)
def test_equals_6(self):
self.assertEqual(lowercase_count('abcdefghijklmnopqrstuvwxyz'), 26)
def test_equals_4(self):
self.assertEqual(lowercase_count(''), 0)
