old_contents: from decimal import Decimal
  
  import mock
  from go.base.tests.helpers import GoDjangoTestCase, DjangoVumiApiHelper
  from go.billing.templatetags.billing_tags import (
      format_cents, format_credits, credit_balance)
  
  
  class TestFormatCents(GoDjangoTestCase):
      @mock.patch('go.billing.settings.DOLLAR_DECIMAL_PLACES', 3)
      def test_format_cents(self):
          self.assertEqual(format_cents(Decimal('2')), '0.020')
          self.assertEqual(format_cents(Decimal('23')), '0.230')
          self.assertEqual(format_cents(Decimal('0.1')), '0.001')
          self.assertEqual(format_cents(Decimal('0.2')), '0.002')
  
          self.assertEqual(
              format_cents(Decimal('123456789.9876')),
              '1,234,567.899')
  
  
  class TestFormatCredits(GoDjangoTestCase):
      def test_format_credits(self):
          self.assertEqual(format_credits(2), '2.00')
          self.assertEqual(format_credits(Decimal('0.23')), '0.23')
          self.assertEqual(format_credits(Decimal('0.028')), '0.02')
  
          self.assertEqual(
              format_credits(Decimal('123456789.9876')),
              '123,456,789.98')
  
  
  class TestCreditBalance(GoDjangoTestCase):
      def setUp(self):
          self.vumi_helper = self.add_helper(DjangoVumiApiHelper())
  
      def mk_user(self, balance):
          self.user_helper = self.vumi_helper.make_django_user()
          user = self.user_helper.get_django_user()
          account = user.account_set.get()
          account.credit_balance = balance
          account.save()
          return user
  
      def test_zero(self):
          user = self.mk_user(Decimal('0.0'))
          self.assertEqual(credit_balance(user), '0.00 credits')
  
      def test_singular(self):
          user = self.mk_user(Decimal('1.0'))
          self.assertEqual(credit_balance(user), '1.00 credit')
  
      def test_plural(self):
          user = self.mk_user(Decimal('123456789.9876'))
          self.assertEqual(credit_balance(user), '123,456,789.98 credits')
  
new_contents: from decimal import Decimal
  
  import mock
  from go.base.tests.helpers import GoDjangoTestCase, DjangoVumiApiHelper
  from go.billing.templatetags.billing_tags import (
      format_cents, format_credits, credit_balance)
  
  
  class TestFormatCents(GoDjangoTestCase):
      @mock.patch('go.billing.settings.DOLLAR_DECIMAL_PLACES', 3)
      def test_format_cents(self):
          self.assertEqual(format_cents(Decimal('2')), '0.020')
          self.assertEqual(format_cents(Decimal('23')), '0.230')
          self.assertEqual(format_cents(Decimal('0.1')), '0.001')
          self.assertEqual(format_cents(Decimal('0.2')), '0.002')
  
          self.assertEqual(
              format_cents(Decimal('123456789.9876')),
              '1,234,567.899')
  
  
  class TestFormatCredits(GoDjangoTestCase):
      def test_format_credits(self):
          self.assertEqual(format_credits(Decimal('2.00'), '2.00')
          self.assertEqual(format_credits(Decimal('0.23')), '0.23')
          self.assertEqual(format_credits(Decimal('0.028')), '0.02')
  
          self.assertEqual(
              format_credits(Decimal('123456789.9876')),
              '123,456,789.98')
  
  
  class TestCreditBalance(GoDjangoTestCase):
      def setUp(self):
          self.vumi_helper = self.add_helper(DjangoVumiApiHelper())
  
      def mk_user(self, balance):
          self.user_helper = self.vumi_helper.make_django_user()
          user = self.user_helper.get_django_user()
          account = user.account_set.get()
          account.credit_balance = balance
          account.save()
          return user
  
      def test_zero(self):
          user = self.mk_user(Decimal('0.0'))
          self.assertEqual(credit_balance(user), '0.00 credits')
  
      def test_singular(self):
          user = self.mk_user(Decimal('1.0'))
          self.assertEqual(credit_balance(user), '1.00 credit')
  
      def test_plural(self):
          user = self.mk_user(Decimal('123456789.9876'))
          self.assertEqual(credit_balance(user), '123,456,789.98 credits')
  
subject: Fix broken format_credits billing template tag test