new_contents: import pytest
  from requests.exceptions import HTTPError
  from tap_quandl import parse_response_data, send_request
  
  def test_parse_response_data_to_get_date_and_price():
      response = {'column_names': ['Date', 'Open', 'High', 'Low', 'Close', 'Volume',
                  'Ex-Dividend', 'Split Ratio', 'Adj. Open', 'Adj. High',
                  'Adj. Low', 'Adj. Close', 'Adj. Volume'],
                  'data': [['2017-06-01', 151.75, 152.29, 150.3, 151.53, 14459173.0,
                            0.0, 1.0, 151.75, 152.29, 150.3, 151.53, 14459173.0]]}
      data_dict = parse_response_data(response)
      assert 'date' in data_dict
      assert 'price' in data_dict
  
  def test_raise_http_error_when_404():
      with pytest.raises(HTTPError):
          send_request(url='http://httpbin.org/status/404', params={})
  
subject: Implement initial unit tests