new_contents: from unittest import TestCase
  from monocyte import Monocyte
  
  
  class MonocyteTest(TestCase):
  
      def setUp(self):
          self.monocyte = Monocyte()
          self.allowed_region = "EU"
          self.not_allowed_region = "US"
          self.ignored_region = "us-gov-west-1"
  
      def test_is_region_allowed(self):
  
          self.assertTrue(self.monocyte.is_region_allowed(self.allowed_region))
          self.assertFalse(self.monocyte.is_region_allowed(self.not_allowed_region))
  
      def test_is_region_ignored(self):
  
          self.assertTrue(self.monocyte.is_region_ignored(self.ignored_region))
          self.assertFalse(self.monocyte.is_region_ignored(self.allowed_region))
  
      def test_is_region_handled(self):
  
          self.assertTrue(self.monocyte.is_region_handled(self.allowed_region))
          self.assertFalse(self.monocyte.is_region_handled(self.ignored_region))
  
subject: add unit tests