new_contents: import unittest
  from steam import user
  
  class ProfileTestCase(unittest.TestCase):
      VALID_ID64 = 76561198014028523
      INVALID_ID64 = 123
      # This is weird but there should be no reason that it's invalid
      # So Valve, if you see this, be gewd guys and make 33 bit (condensed)
      # IDs work properly. Or at least put a more appropriate error. Currently
      # It's impossible to distinguish between this and a bad ID (all are code 8)
      WEIRD_ID64 = (VALID_ID64 >> 33 << 33) ^ VALID_ID64
  
  class VanityTestCase(unittest.TestCase):
      VALID_VANITY = "stragglerastic"
      INVALID_VANITY = "*F*SDF9"
  
      def test_invalid_vanity(self):
          vanity = user.vanity_url(self.INVALID_VANITY)
          self.assertRaises(user.VanityError, lambda: vanity.id64)
  
      def test_pathed_vanity(self):
          vanity = user.vanity_url('/' + self.VALID_VANITY + '/')
          self.assertEqual(vanity.id64, ProfileTestCase.VALID_ID64)
  
      def test_valid_vanity(self):
          vanity = user.vanity_url(self.VALID_VANITY)
          self.assertEqual(vanity.id64, ProfileTestCase.VALID_ID64)
  
  class ProfileIdTestCase(ProfileTestCase):
      def test_invalid_id(self):
          profile = user.profile(self.INVALID_ID64)
          self.assertRaises(user.ProfileNotFoundError, lambda: profile.id64)
  
      def test_pathed_id(self):
          profile = user.profile('/' + str(self.VALID_ID64) + '/')
          self.assertEqual(profile.id64, self.VALID_ID64)
  
      def test_valid_id(self):
          profile = user.profile(self.VALID_ID64)
          self.assertEqual(profile.id64, self.VALID_ID64)
  
      def test_weird_id(self):
          profile = user.profile(self.WEIRD_ID64)
          self.assertRaises(user.ProfileNotFoundError, lambda: profile.id64)
  
subject: Add initial steam.user test fixtures