code: def test_one_gpu(self):
      self.subtest_gpu_encoding(1)
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import math
  import unittest
  import numpy
  import faiss
  from faiss.contrib import datasets
  from faiss.contrib import ivf_tools
  from faiss.contrib.evaluation import knn_intersection_measure
label_desc: Use image node_id 3 for calling the TestLSQIcmEncoder obj's underlying member method code with example usage: obj.test_one_gpu() without return types