code: def test_vid_types(self):
      self.assertEqual(self.vid_sample.media_type, fom.VIDEO)
      self.assertEqual(self.vid_dataset.media_type, fom.VIDEO)
  
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 3 for calling the MediaTypeTests obj's underlying member method code with example usage: obj.test_vid_types() without return types