code: def test_width_height(self):
      data = np.zeros((10, 20), dtype=np.uint8)
      T = Texture2D(data=data)
      assert T.width == 20
      assert T.height == 10
  
imports: import unittest
  import numpy
  import pytest
  from vispy.gloo import Texture1D, Texture2D, Texture3D, TextureAtlas
  from vispy.testing import requires_pyopengl, run_tests_if_main, assert_raises
label_desc: Use image node_id 2 for calling the Texture2DTest obj's underlying member method code with example usage: obj.test_width_height() without return types