text: from __future__ import absolute_import
  
  from sentry.utils.avatar import get_letter_avatar
  
  
  def test_letter_avatar():
      # Test name as display name and email as identifier
      letter_avatar = get_letter_avatar('Jane Doe', 'janedoe@example.com')
      assert 'JD' in letter_avatar
      assert '#E56AA6' in letter_avatar
      assert 'svg' in letter_avatar
  
      # Test email as display name and id as identifier
      letter_avatar = get_letter_avatar('johnsmith@example.com', 2)
      assert 'J' in letter_avatar
      assert '#6FBA57' in letter_avatar
  
      # Test no display name and ip address as identifier
      letter_avatar = get_letter_avatar(None, '127.0.0.1')
      assert '?' in letter_avatar
      assert '#E35141' in letter_avatar
  
      # Test display name with trailing spaces
      letter_avatar = get_letter_avatar('johnsmith@example.com ', 2)
      assert 'J' in letter_avatar
      assert '#6FBA57' in letter_avatar
  
      # Test name as display name and email as identifier for html
      letter_avatar = get_letter_avatar('Jane Doe', 'janedoe@example.com', use_svg=False)
      assert 'JD' in letter_avatar
      assert '#E56AA6' in letter_avatar
      assert 'span' in letter_avatar
  
      # Test email as display name and id as identifier for html
      letter_avatar = get_letter_avatar('johnsmith@example.com', 2, use_svg=False)
      assert 'J' in letter_avatar
      assert '#6FBA57' in letter_avatar
  
      # Test no display name and ip address as identifier for html
      letter_avatar = get_letter_avatar(None, '127.0.0.1', use_svg=False)
      assert '?' in letter_avatar
      assert '#E35141' in letter_avatar
  