text: import unittest
  
  from ac2020.days.Day4 import Day4
  
  
  class Day4Test(unittest.TestCase):
  
      def test_empty_input(self):
          day = Day4()
          day._set_input('')
          self.assertEqual('0', day.part1())
          self.assertEqual('0', day.part2())
  
      def test_correct_input(self):
          day = Day4()
          day._set_input('ecl:gry pid:860033327 eyr:2020 hcl:#fffffd\nbyr:1937 iyr:2017 cid:147 hgt:183cm\n\niyr:2013 ecl:amb cid:350 eyr:2023 pid:028048884\nhcl:#cfa07d byr:1929\n\nhcl:#ae17e1 iyr:2013\neyr:2024\necl:brn pid:760753108 byr:1931\nhgt:179cm\n\nhcl:#cfa07d eyr:2025 pid:166559648\niyr:2011 ecl:brn hgt:59in')
          self.assertEqual('2', day.part1())
          self.assertEqual('2', day.part2())
  
      def test_none_valid(self):
          day = Day4()
          day._set_input('eyr:1972 cid:100\nhcl:#18171d ecl:amb hgt:170 pid:186cm iyr:2018 byr:1926\n\niyr:2019\nhcl:#602927 eyr:1967 hgt:170cm\necl:grn pid:012533040 byr:1946\n\nhcl:dab227 iyr:2012\necl:brn hgt:182cm pid:021572410 eyr:2020 byr:1992 cid:277\n\nhgt:59cm ecl:zzz\neyr:2038 hcl:74454a iyr:2023\npid:3556412378 byr:2007')
          self.assertEqual('4', day.part1())
          self.assertEqual('0', day.part2())
  
      def test_all_valid(self):
          day = Day4()
          day._set_input('pid:087499704 hgt:74in ecl:grn iyr:2012 eyr:2030 byr:1980\nhcl:#623a2f\n\neyr:2029 ecl:blu cid:129 byr:1989\niyr:2014 pid:896056539 hcl:#a97842 hgt:165cm\n\nhcl:#888785\nhgt:164cm byr:2001 iyr:2015 cid:88\npid:545766238 ecl:hzl\neyr:2022\n\niyr:2010 hgt:158cm hcl:#b6652a ecl:blu byr:1944 eyr:2021 pid:093154719')
          self.assertEqual('4', day.part1())
          self.assertEqual('4', day.part2())
  