new_contents: from datetime import datetime
  
  from django.test import TestCase
  
  from jarbas.core.management.commands.loadsuppliers import Command
  
  
  class TestStaticMethods(TestCase):
  
      def setUp(self):
          self.command = Command()
  
      def test_to_float(self):
          self.assertEqual(self.command.to_float(1), 1.0)
          self.assertEqual(self.command.to_float('abc'), None)
  
      def test_to_email(self):
          expected = 'jane@example.com'
          self.assertEqual(self.command.to_email('abc'), None)
          self.assertEqual(self.command.to_email('jane@example.com'), expected)
  
      def test_get_file_name(self):
          expected = '1970-01-01-ahoy.xz'
          with self.settings(AMAZON_S3_SUPPLIERS_DATE='1970-01-01'):
              self.assertEqual(self.command.get_file_name('ahoy'), expected)
  
      def test_to_date(self):
          expected = '1991-07-22'
          self.assertEqual(self.command.to_date('22/7/91'), expected)
          self.assertEqual(self.command.to_date('22/13/91'), None)
          self.assertEqual(self.command.to_date('aa/7/91'), None)
  
subject: Add tests for loadsuppliers statics methods