code: def test_bitwise_xor():
      assert pixel(ImageMath.eval("Z^Z", A=A, Z=Z)) == "I 0"
      assert pixel(ImageMath.eval("Z^A", A=A, Z=Z)) == "I 1"
      assert pixel(ImageMath.eval("A^Z", A=A, Z=Z)) == "I 1"
      assert pixel(ImageMath.eval("A^A", A=A, Z=Z)) == "I 0"
  
imports: from __future__ import annotations
  import pytest
  from PIL import Image, ImageMath
label_desc: Use image node_id 16 for calling a global function with example usage: test_bitwise_xor() without return types