code: def test_binary_op_vec(self, func_name, a, b, atol, n_reps=None):
      n_reps = _get_n_reps(n_reps)
      gs_fnc = get_backend_fnc(func_name)
      expected = gs_fnc(a, b)
  
      vec_data = generate_vectorization_data(
          data=[
              dict(
                  func_name=func_name,
                  a=a,
                  b=b,
                  expected=expected,
                  atol=atol,
              )
          ],
          arg_names=["a", "b"],
          expected_name="expected",
          n_reps=n_reps,
      )
      self._test_vectorization(vec_data)
  
imports: import random
  import numpy
  import pytest
  import scipy
  import geomstats.backend
  from geomstats.test.test_case import TestCase
  from geomstats.test.vectorization import generate_vectorization_data
label_desc: Use image node_id 5 for calling the BackendTestCase obj's underlying member method code with example usage: obj.test_binary_op_vec(func_name, a, b, atol, n_reps) without return types