content: import pytest
  
  from django_unicorn.serializer import (
      InvalidFieldAttributeError,
      InvalidFieldNameError,
      _exclude_field_attributes,
  )
  
  
  def test_exclude_field_attributes():
      expected = {"1": {"2": {}}}
      dict_data = {"1": {"2": {"3": "4"}}}
      _exclude_field_attributes(dict_data, ("1.2.3",))
  
      assert dict_data == expected
  
  
  def test_exclude_field_attributes_none_value():
      expected = {"1": None}
      dict_data = {"1": None}
      _exclude_field_attributes(dict_data, ("1.2",))
  
      assert dict_data == expected
  
  
  def test_exclude_field_attributes_empty_value():
      dict_data = {"1": {}}
  
      with pytest.raises(InvalidFieldAttributeError):
          _exclude_field_attributes(dict_data, ("1.2",))
  
  
  def test_exclude_field_attributes_invalid_field_name():
      dict_data = {"test": None}
  
      with pytest.raises(InvalidFieldNameError):
          _exclude_field_attributes(dict_data, ("1.2",))
  
  
  def test_exclude_field_attributes_invalid_field_attribute():
      dict_data = {"1": {"test": "more"}}
  
      with pytest.raises(InvalidFieldAttributeError):
          _exclude_field_attributes(dict_data, ("1.2",))
  