old_contents: from nose.tools import assert_equal
  from wunderapi.config import Config
  
  
  def setup():
      return Config(config_file="tests/resources/test_config")
  
  
  def test_parse_config_with_correct_parms():
      pass
  
  
  def test_parse_config_with_incorrect_parms():
      pass
  
  
  def test_config_created_with_default_parms():
      config = setup()
      config.parse_config()
      assert_equal(config.api_key, 'API Key')
      assert_equal(config.location, 'Zipcode')
      assert_equal(config.date_format, 'date')
      assert_equal(config.units, 'english')
  
new_contents: from nose.tools import assert_equal
  from wunderapi.config import Config
  
  
  def setup():
      return Config(config_file="tests/resources/test_config")
  
  
  def test_parse_config_with_correct_parms():
      pass
  
  
  def test_parse_config_with_incorrect_parms():
      pass
  
  
  def test_config_created_with_default_parms():
      config = setup()
      config.parse_config()
      assert_equal(config.date_format, 'date')
      assert_equal(config.units, 'english')
  
subject: Update test to get api_key from environment