docstr: Make sure saving and loading retains things.
docstr_tok: ["Make","sure","saving","and","loading","retains","things","."]
code: def test_save_and_load(self):
      """
      Make sure saving and loading retains things.
      """
      filename = "save_file%s" % (str(uuid.uuid4()))
      self.model.save(filename)
      self.model = tc.load_model(filename)
  
      try:
          self.test_summary()
          print("Summary passed")
          self.test_repr()
          print("Repr passed")
          self.test_predict()
          print("Predict passed")
          self.test_evaluate()
          print("Evaluate passed")
          self.test_extract_features()
          print("Extract features passed")
          self.test_feature_importance()
          print("Feature importance passed")
          self.test__list_fields()
          print("List field passed")
          self.test_get()
          print("Get passed")
          shutil.rmtree(filename)
      except:
          self.assertTrue(
              False, "Failed during save & load diagnostics"
          )
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  import math
  import uuid
  import random
  import sys
  import copy
  from turicreate.toolkits import evaluation
  from turicreate.toolkits._main import ToolkitError
  import shutil
  import numpy
  from array import array
  import os
label_desc: Use image node_id 8 for calling the RandomForestRegressionTest obj's underlying member method code with example usage: obj.test_save_and_load() without return types