class_docstr: gowalla dataset
class_docstr_tok: ["gowalla","dataset"]
docstr: return:
      dict: {user: [items]}
docstr_tok: ["return",":","dict",":","{","user",":","[","items","]","}"]
code: def __build_test(self):
      """
      return:
          dict: {user: [items]}
      """
      test_data = {}
      for i, item in enumerate(self.testItem):
          user = self.testUser[i]
          if test_data.get(user):
              test_data[user].append(item)
          else:
              test_data[user] = [item]
      return test_data
  
imports: import os
  from os.path import join
  import sys
  import paddle
  import numpy
  import pandas
  from paddle.io import Dataset, DataLoader
  from scipy.sparse import csr_matrix
  import scipy.sparse
  from time import time
label_desc: Use image node_id 9 for calling the Loader obj's underlying member method code with example usage: obj.__build_test() and returns: test_data