old_contents: from know_me import serializers
  
  
  def test_serialize(profile_factory):
      """
      Test serializing a profile.
      """
      profile = profile_factory()
      serializer = serializers.ProfileListSerializer(profile)
  
      expected = {
          'id': profile.id,
          'name': profile.name,
          'quote': profile.quote,
          'welcome_message': profile.welcome_message,
      }
  
      assert serializer.data == expected
  
new_contents: from know_me import serializers
  
  
  def test_create(user_factory):
      """
      Saving a serializer containing valid data should create a new
      profile.
      """
      user = user_factory()
      data = {
          'name': 'John',
          'quote': "Hi, I'm John",
          'welcome_message': 'This is my profile.',
      }
  
      serializer = serializers.ProfileListSerializer(data=data)
      assert serializer.is_valid()
  
      serializer.save(user=user)
      profile = user.profile
  
      assert profile.name == data['name']
      assert profile.quote == data['quote']
      assert profile.welcome_message == data['welcome_message']
      assert profile.user == user
  
  
  def test_serialize(profile_factory):
      """
      Test serializing a profile.
      """
      profile = profile_factory()
      serializer = serializers.ProfileListSerializer(profile)
  
      expected = {
          'id': profile.id,
          'name': profile.name,
          'quote': profile.quote,
          'welcome_message': profile.welcome_message,
      }
  
      assert serializer.data == expected
  
subject: Add test for creating profile from serializer.