new_contents: import unittest, argparse
  from echolalia.formatter.rawer import Formatter
  
  class RawerTestCase(unittest.TestCase):
  
    def setUp(self):
      self.parser = argparse.ArgumentParser()
      self.data = [{chr(i): i - 96} for i in xrange(97, 123)]
      self.formatter = Formatter()
  
    def test_add_args(self):
      self.assertEqual(self.formatter.add_args(self.parser), self.parser)
  
    def test_marshall(self):
      args = self.parser.parse_args([])
      result = self.formatter.marshall(args, self.data)
      self.assertEqual(result, self.data)
  
subject: Add tests for formatter raw