text: import os
  import shutil
  import unittest
  
  import yaml
  
  from pyrevolve.evolution.individual import Individual
  from pyrevolve.evolution.speciation.species import Species
  from pyrevolve.genotype import Genotype
  
  
  class FakeGenome(Genotype):
      def __init__(self, _id: int):
          self.id = _id
  
  
  class SpeciesTest(unittest.TestCase):
      TEST_FOLDER = '/tmp/species_test'
  
      def _create_clean_test_folder(self):
          if os.path.exists(self.TEST_FOLDER):
              shutil.rmtree(self.TEST_FOLDER)
          os.mkdir(self.TEST_FOLDER)
  
      def _generate_individuals(self):
          return [Individual(FakeGenome(i)) for i in range(20)]
  
      def _generate_species(self, _id: int = 42, individuals=None):
          if individuals is None:
              individuals = self._generate_individuals()
          return Species(individuals, _id)
  
      def test_instancing(self):
          s = self._generate_species()
          self.assertIsInstance(s, Species)
  
      def test_serialize(self):
          s = self._generate_species(33)
          self._create_clean_test_folder()
          species_file = os.path.join(self.TEST_FOLDER, 'species_33.yaml')
          s.serialize(species_file)
  
          self.assertTrue(os.path.isfile(species_file))
          with open(species_file) as file:
              data = yaml.load(file, Loader=yaml.SafeLoader)
  
          self.assertDictEqual(data, {
              'id': 33,
              'age': {'evaluations': 0, 'generations': 0, 'no_improvements': 0},
              'individuals_ids': [i for i in range(20)]
          })
  
      def test_deserialize(self):
          individuals = self._generate_individuals()
          s = self._generate_species(33, individuals)
          self._create_clean_test_folder()
          species_file = os.path.join(self.TEST_FOLDER, 'species_33.yaml')
          s.serialize(species_file)
  
          loaded_individuals = {
              individual.id: individual for individual in individuals
          }
          s1 = Species.Deserialize(species_file, loaded_individuals)
  
          self.assertEqual(s._id, s1._id)
          self.assertEqual(s.age.evaluations(), s1.age.evaluations())
          self.assertEqual(s.age.generations(), s1.age.generations())
          self.assertEqual(s.age.no_improvements(), s1.age.no_improvements())
          for (individual1, fit1), (individual2, fit2) in zip(s._individuals, s1._individuals):
              self.assertEqual(individual1, individual2)
              self.assertEqual(fit1, fit2)
  
          # test also the equality operators
          self.assertEqual(s.age, s1.age)
          self.assertEqual(s, s1)
  