new_contents: import unittest
  
  from address import has_reflection, is_compatible
  
  
  class TestAddress(unittest.TestCase):
      def test_has_reflection(self):
          assert has_reflection(['mnop']) == False
          assert has_reflection(['abba', 'qrst']) == True
  
      def test_is_compatible(self):
          assert is_compatible('abba[mnop]qrst') == True
          assert is_compatible('abcd[bddb]xyyx') == False
          assert is_compatible('aaaa[qwer]tyui') == False
          assert is_compatible('ioxxoj[asdfgh]zxcvbn') == True
          
  
subject: Test part 1 of day 7.