code: def test_vander_array_like_list(self, xp):
      a = [0, 1, 2, 3, 4, 5, 6]
      return xp.vander(a, N=self.N, increasing=self.increasing)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestVander obj's underlying member method code with example usage: obj.test_vander_array_like_list(xp) and returns: xp