code: def test_all_render_methods(method_name):
      """Test that render methods don't produce any errors."""
      size = (40, 40)
      np.random.seed(0)  # make tests the same every time
      data = _make_test_data(size[:1] * 3, np.float32)
      # modify the data for 'minip' method so that there is at least one segment
      # of the volume with no 'empty'/zero space
      data[:, :, 40 // 3 : 2 * 40 // 3] = 1.0
      clim = (0, 1)
      kwargs = {}
      with TestingCanvas(size=size, bgcolor="k") as c:
          v = c.central_widget.add_view(border_width=0)
          volume = scene.visuals.Volume(
              data,
              interpolation="nearest",
              clim=clim,
              parent=v.scene,
              method=method_name,
              **kwargs,
          )
          v.camera = "arcball"
          v.camera.fov = 0
          v.camera.scale_factor = 40.0
          v.camera.center = (19.5, 19.5, 19.5)
  
          assert volume.method == method_name
          rendered = c.render()[..., :3]
          # not all black
          assert rendered.sum() != 0
          # not all white
          assert rendered.sum() != 255 * rendered.size
  
imports: import pytest
  import numpy
  from vispy import scene
  from vispy.testing import TestingCanvas, requires_application, run_tests_if_main, requires_pyopengl, raises
  from vispy.testing.image_tester import assert_image_approved, downsample
  from vispy.testing.rendered_array_tester import compare_render, max_for_dtype
label_desc: Use image node_id 5 for calling a global function with example usage: test_all_render_methods(method_name) without return types