code: def test_no_resize_ellipsis(self):
      data = np.zeros(10)
      B = DataBuffer(data=data)
      data = np.zeros(30)
      self.assertRaises(ValueError, B.__setitem__, Ellipsis, data)
  
imports: import unittest
  import numpy
  from vispy.testing import run_tests_if_main
  from vispy.gloo.buffer import Buffer, DataBuffer, DataBufferView, VertexBuffer, IndexBuffer
label_desc: Use image node_id 19 for calling the DataBufferTest obj's underlying member method code with example usage: obj.test_no_resize_ellipsis() without return types