code: def test_circle_draw():
      """Test drawing circles without transform using EllipseVisual"""
      with TestingCanvas() as c:
          ellipse = visuals.Ellipse(
              center=(75, 35, 0),
              radius=20,
              color=(1, 0, 0, 1),
              parent=c.scene,
          )
          assert_image_approved(c.render(), "visuals/circle1.png")
  
          ellipse.parent = None
          ellipse = visuals.Ellipse(
              center=(75, 35, 0),
              radius=20,
              color=(1, 0, 0, 1),
              border_color=(0, 1, 1, 1),
              parent=c.scene,
          )
          assert_image_approved(c.render(), "visuals/circle2.png")
  
          ellipse.parent = None
          ellipse = visuals.Ellipse(
              center=(75, 35, 0),
              radius=20,
              border_color=(0, 1, 1, 1),
              parent=c.scene,
          )
  
          # low corr here because borders have some variability
          # esp. w/HiDPI
          assert_image_approved(
              c.render(), "visuals/circle3.png", min_corr=0.7
          )
  
imports: from vispy.scene import visuals, transforms
  from vispy.testing import requires_application, TestingCanvas, run_tests_if_main
  from vispy.testing.image_tester import assert_image_approved
label_desc: Use image node_id 1 for calling a global function with example usage: test_circle_draw() without return types