old_contents: import pytest
  from pygraylog.pygraylog import graylogapi
  
  def test_get():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
          username = 'Zack',
          password = 'Zack')
      res = api._get()
      expected = {
          'one':  'two'
      }
      assert res == expected
  
  def test_post():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._post()
  
  def test_put():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._put()
  
  def test_delete():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._delete()
  
  
new_contents: import pytest
  from pygraylog.pygraylog import graylogapi
  
  def test_get():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
          username = 'Zack',
          password = 'Zack')
      res = api._get()
      expected = "{\"one\": \"two\"}\n"
      assert res == expected
  
  def test_post():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._post()
  
  def test_put():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._put()
  
  def test_delete():
      api = graylogapi.GraylogAPI('http://echo.jsontest.com/one/two', 
              username = 'Zack',
              password = 'Zack')
      with pytest.raises(NotImplementedError):
          api._delete()
  
  
subject: Modify test to reflect that api returns string response.