code: def setUp(self):
      self.img_sample = fo.Sample(filepath="image.png")
      self.img_dataset = fo.Dataset()
      self.img_dataset.add_sample(self.img_sample)
  
      self.vid_sample = fo.Sample(filepath="video.mp4")
      self.vid_dataset = fo.Dataset()
      self.vid_dataset.add_sample(self.vid_sample)
  
imports: import time
  import unittest
  from unittest.mock import MagicMock, patch
  import numpy
  import fiftyone
  import fiftyone.constants
  import fiftyone.core.media
  import fiftyone.core.odm
  import fiftyone.core.utils
  from fiftyone.migrations.runner import MigrationRunner
  from decorators import drop_datasets
  from bson import ObjectId
  from fiftyone.core.odm.utils import load_dataset
label_desc: Use image node_id 1 for calling the MediaTypeTests obj's underlying member method code with example usage: obj.setUp() without return types