text: import importlib
  import unittest
  
  solution = importlib.import_module('2020_07_2')
  
  class Test2020Day7Part1(unittest.TestCase):
  
    def test_example1(self):
      input = (
          'light red bags contain 1 bright white bag, 2 muted yellow bags.\n'
          'dark orange bags contain 3 bright white bags, 4 muted yellow bags.\n'
          'bright white bags contain 1 shiny gold bag.\n'
          'muted yellow bags contain 2 shiny gold bags, 9 faded blue bags.\n'
          'shiny gold bags contain 1 dark olive bag, 2 vibrant plum bags.\n'
          'dark olive bags contain 3 faded blue bags, 4 dotted black bags.\n'
          'vibrant plum bags contain 5 faded blue bags, 6 dotted black bags.\n'
          'faded blue bags contain no other bags.\n'
          'dotted black bags contain no other bags.\n'
      )
      self.assertEqual(solution.run(input), 32)
  