Write a function to convert tuple string to integer tuple.
def tuple_str_int(test_str):
  res = tuple(int(num) for num in test_str.replace('(', '').replace(')', '').replace('...', '').split(', '))
  return (res) 
assert tuple_str_int("(7, 8, 9)") == (7, 8, 9) assert tuple_str_int("(1, 2, 3)") == (1, 2, 3) assert tuple_str_int("(4, 5, 6)") == (4, 5, 6) assert tuple_str_int("(7, 81, 19)") == (7, 81, 19)