old_contents: from expects import expect, equal
  from bankbarcode.cuaderno57 import Recibo507
  
  with description('Checksum Recibo507 of cuaderno57'):
      with it('accomplish the example of cuaderno57.pdf'):
          entity = '01234567'
          suffix = '023'
          ref = '12345678901'
          notice = '123456'
          amount = '6543.21'
          checksum = '74'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
      with it('accomplish another example'):
          entity = '22350466'
          suffix = '501'
          ref = '00000000015'
          notice = '300815'
          amount = '53.98'
          checksum = '68'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
      with it('accomplish another example'):
          entity = '22350466'
          suffix = '501'
          ref = '00000000401'
          notice = '300815'
          amount = '37.62'
          checksum = '56'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
new_contents: from expects import expect, equal
  from bankbarcode.cuaderno57 import Recibo507
  
  with description('Checksum Recibo507 of cuaderno57'):
      with it('accomplish the example of cuaderno57.pdf'):
          entity = '01234567'
          suffix = '023'
          ref = '12345678901'
          notice = '123456'
          amount = '6543.21'
          checksum = '74'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
      with it('accomplish another example'):
          entity = '22350466'
          suffix = '501'
          ref = '00000000015'
          notice = '300815'
          amount = '53.98'
          checksum = '68'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
      with it('accomplish another example'):
          entity = '22350466'
          suffix = '501'
          ref = '00000000401'
          notice = '300815'
          amount = '37.62'
          checksum = '56'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
      with it('accomplish another example'):
          entity = '22350466'
          suffix = '501'
          ref = '00000085501'
          notice = '130516'
          amount = '56.92'
          checksum = '00'
          expect(Recibo507(entity, suffix, ref, notice, amount).checksum()).to(equal(checksum))
  
subject: Add failed test