old_contents: import pytest
  import mock
  
  from slackelot.slackelot import SlackNotificationError, send_message
  
  
  def test_send_message_success():
      """Returns True if response.status_code == 200"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 200})) as mock_response:
          webhook = 'https://hooks.slack.com/services/'
          assert send_message('foo', webhook) == True
  
  
  def test_send_message_raises_error_bad_request():
      """Raises SlackNotificationError if response.status_code not 200"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 400})) as mock_response:
          with pytest.raises(SlackNotificationError) as error:
              webhook = 'https://hooks.slack.com/services/'
              send_message('foo', webhook)
          assert 'Slack notification failed' in str(error.value)
  
  
  def test_send_message_raises_error_bad_webhook():
      """Raises SlackNotificationError if webhook_url malformed"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 200})) as mock_response:
          with pytest.raises(SlackNotificationError) as error:
              webhook = 'https://notthehookwerelookingfor.com'
              send_message('foo', webhook)
          assert 'webhook_url is not in the correct format' in str(error.value)
  
new_contents: import pytest
  
  try:
      from unittest import mock
  except ImportError:
      import mock
  
  from slackelot import SlackNotificationError, send_message
  
  
  def test_send_message_success():
      """Returns True if response.status_code == 200"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 200})) as mock_response:
          webhook = 'https://hooks.slack.com/services/'
          assert send_message('foo', webhook) == True
  
  
  def test_send_message_raises_error_bad_request():
      """Raises SlackNotificationError if response.status_code not 200"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 400})) as mock_response:
          with pytest.raises(SlackNotificationError) as error:
              webhook = 'https://hooks.slack.com/services/'
              send_message('foo', webhook)
          assert 'Slack notification failed' in str(error.value)
  
  
  def test_send_message_raises_error_bad_webhook():
      """Raises SlackNotificationError if webhook_url malformed"""
      with mock.patch('slackelot.slackelot.requests.post', return_value=mock.Mock(**{'status_code': 200})) as mock_response:
          with pytest.raises(SlackNotificationError) as error:
              webhook = 'https://notthehookwerelookingfor.com'
              send_message('foo', webhook)
          assert 'webhook_url is not in the correct format' in str(error.value)
  
subject: Refactor imports to be less verbose