code: def _make_random_vector(self):
      return testing.shaped_random((self.n,), cupy, dtype=self.dtype)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import cublas
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestLevel1Functions obj's underlying member method code with example usage: obj._make_random_vector() and returns: testing