class_docstr: Base class for storage tests.
code: def check_delete_vector(self, x):
      hash_name, bucket_name = "tastHash", "testBucket"
      samples = list(range(10))
      for sample in samples:
          self.storage.store_vector(hash_name, bucket_name, x, sample)
  
      def get_bucket_items():
          return [
              data
              for v, data in self.storage.get_bucket(
                  hash_name, bucket_name
              )
          ]
  
      self.assertEqual(get_bucket_items(), samples)
      deleted_sample = 4
      self.storage.delete_vector(
          hash_name, [bucket_name], deleted_sample
      )
      samples.remove(deleted_sample)
      self.assertEqual(get_bucket_items(), samples)
  
imports: import unittest
  import numpy
  import scipy
  from mockredis import MockRedis
  import mongomock
  from future.builtins import range
  from future.builtins import zip
  from nearpy.storage import MemoryStorage, RedisStorage, MongoStorage
label_desc: Use image node_id 5 for calling the StorageTest obj's underlying member method code with example usage: obj.check_delete_vector(x) and returns: unknown