from commands.sniff import is_ip_address

import unittest


class TestIsIpAddress(unittest.TestCase):

    def test_valid_ipv4_address_all_octets_in_range(self):
        self.assertTrue(is_ip_address("192.168.1.1"))
        self.assertTrue(is_ip_address("0.0.0.0"))
        self.assertTrue(is_ip_address("255.255.255.255"))

    def test_ipv4_address_with_leading_zeros(self):
        self.assertTrue(is_ip_address("192.168.001.001"))
        self.assertTrue(is_ip_address("0.0.0.0"))
        self.assertTrue(is_ip_address("255.255.255.255"))

    def test_ipv4_address_mixed_single_double_digit_octets(self):
        self.assertTrue(is_ip_address("192.168.1.01"))
        self.assertTrue(is_ip_address("0.0.0.0"))
        self.assertTrue(is_ip_address("255.255.255.255"))

    def test_ipv4_address_maximum_values_in_octets(self):
        self.assertTrue(is_ip_address("255.255.255.255"))
        self.assertTrue(is_ip_address("0.0.0.0"))
        self.assertTrue(is_ip_address("192.168.1.1"))


    def test_ipv4_address_minimum_values_in_octets(self):
        self.assertTrue(is_ip_address("0.0.0.0"))
        self.assertTrue(is_ip_address("192.168.1.1"))
        self.assertTrue(is_ip_address("255.255.255.255"))


    def test_ipv4_address_more_than_four_octets_invalid(self):
        self.assertFalse(is_ip_address("192.168.1.1.1"))
        self.assertFalse(is_ip_address("0.0.0.0.0"))
        self.assertFalse(is_ip_address("255.255.255.255.255"))


    def test_ipv4_address_fewer_than_four_octets_invalid(self):
        self.assertFalse(is_ip_address("192.168.1"))
        self.assertFalse(is_ip_address("0.0"))
        self.assertFalse(is_ip_address("255"))


    def test_ipv4_address_non_numeric_characters_invalid(self):
        self.assertFalse(is_ip_address("192.a.b.c"))
        self.assertFalse(is_ip_address("0.x.y.z"))
        self.assertFalse(is_ip_address("255.q.w.e"))


    def test_ipv4_address_octets_out_of_range_invalid(self):
        self.assertFalse(is_ip_address("256.256.256.256"))
        self.assertFalse(is_ip_address("300.300.300.300"))
        self.assertFalse(is_ip_address("999.999.999.999"))


    def test_ipv4_address_empty_string_invalid(self):
        self.assertFalse(is_ip_address(""))
        self.assertFalse(is_ip_address(" "))
        self.assertFalse(is_ip_address(None))