code: def test_effect_mandelbrot(self):
      # Arrange
      size = (512, 512)
      extent = (-3, -2.5, 2, 2.5)
      quality = 100
  
      # Act
      im = Image.effect_mandelbrot(size, extent, quality)
  
      # Assert
      assert im.size == (512, 512)
      assert_image_equal_tofile(
          im, "Tests/images/effect_mandelbrot.png"
      )
  
imports: import io
  import os
  import shutil
  import sys
  import tempfile
  import pytest
  from PIL import Image, ImageDraw, ImagePalette, UnidentifiedImageError
  from .helper import assert_image_equal, assert_image_equal_tofile, assert_image_similar_tofile, assert_not_all_same, hopper, is_win32, mark_if_feature_version, skip_unless_feature
label_desc: Use image node_id 29 for calling the TestImage obj's underlying member method code with example usage: obj.test_effect_mandelbrot() without return types