old_contents: from django.test import TestCase
  from django.template.defaultfilters import slugify
  from django.core.exceptions import ValidationError
  
  from competition.validators import greater_than_zero, non_negative, validate_name
  
  
  class ValidationFunctionTest(TestCase):
  
      def test_greater_than_zero(self):
          """Check greater_than_zero validator"""
          self.assertRaises(ValidationError, greater_than_zero, 0)
          self.assertRaises(ValidationError, greater_than_zero, -1)
          self.assertIsNone(greater_than_zero(1))
  
      def test_non_negative(self):
          """Check non_negative validator"""
          self.assertRaises(ValidationError, non_negative, -1)
          self.assertIsNone(non_negative(0))
          self.assertIsNone(non_negative(1))
  
      def test_validate_name(self):
          """Check name validator"""
          # Try some valid names
          valid_names = ['MegaMiner-AI 10: Galapagos', 'Chess 2012', '2012 Chess',
                         'B.L.O.O.M. 2: Revenge of the Flowers', '__main__']
          for name in valid_names:
              self.assertIsNone(validate_name(name))
  
          self.assertRaises(ValidationError, validate_name, "..")
          self.assertRaises(ValidationError, validate_name, "_..")
          self.assertRaises(ValidationError, validate_name, "_")
          self.assertRaises(ValidationError, validate_name, "____")
          self.assertRaises(ValidationError, validate_name, ".Nope")
          self.assertRaises(ValidationError, validate_name, ".Nope")
  
new_contents: from django.test import TestCase
  from django.template.defaultfilters import slugify
  from django.core.exceptions import ValidationError
  
  from competition.validators import greater_than_zero, non_negative, validate_name
  
  
  class ValidationFunctionTest(TestCase):
  
      def test_greater_than_zero(self):
          """Check greater_than_zero validator"""
          self.assertRaises(ValidationError, greater_than_zero, 0)
          self.assertRaises(ValidationError, greater_than_zero, -1)
          self.assertIsNone(greater_than_zero(1))
  
      def test_non_negative(self):
          """Check non_negative validator"""
          self.assertRaises(ValidationError, non_negative, -1)
          self.assertIsNone(non_negative(0))
          self.assertIsNone(non_negative(1))
  
      def test_validate_name(self):
          """Check name validator"""
          # Try some valid names
          valid_names = ['MegaMiner-AI 10: Galapagos', 'Chess 2012', '2012 Chess',
                         'B.L.O.O.M. 2: Revenge of the Flowers']
          for name in valid_names:
              self.assertIsNone(validate_name(name))
  
          self.assertRaises(ValidationError, validate_name, "..")
          self.assertRaises(ValidationError, validate_name, "_..")
          self.assertRaises(ValidationError, validate_name, "_")
          self.assertRaises(ValidationError, validate_name, "____")
          self.assertRaises(ValidationError, validate_name, ".Nope")
          self.assertRaises(ValidationError, validate_name, ".Nope")
  
subject: Correct unit tests to comply with new team name RE