text: import unittest
  
  from katas.kyu_7.integer_to_currency_format import to_currency
  
  
  class IntegerToCurrencyTestCase(unittest.TestCase):
      def test_equals(self):
          self.assertEqual(to_currency(123456), '123,456')
  
      def test_equals_2(self):
          self.assertEqual(to_currency(1234), '1,234')
  
      def test_equals_3(self):
          self.assertEqual(to_currency(123), '123')
  
      def test_equals_4(self):
          self.assertEqual(to_currency(123456789012), '123,456,789,012')
  