def test_14(self):
sample = "+79211234567"
result = get_int(sample)
self.assertIsNone(result)
def test_13(self):
sample = "один"
result = get_int(sample)
self.assertIsNone(result)
def test_5(self):
sample = "99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
expected = 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
result = get_int(sample)
self.assertEqual(expected, result)
def test_1(self):
sample = "10"
expected = 10
result = get_int(sample)
self.assertEqual(expected, result)
def test_4(self):
sample = "123f"
expected = None
result = get_int(sample)
self.assertEqual(expected, result)