code: def test_unary_op_mult_out_given_shape(
      self, func_name, array_shape, func_array=gs.ones
  ):
      self._reset_dtype()
  
      gs_fnc = get_backend_fnc(func_name)
  
      for dtype_str in self.dtypes_str:
          dtype = gs.as_dtype(dtype_str)
          a = func_array(array_shape, dtype=dtype)
  
          out = gs_fnc(a)
          for out_ in out:
              self.assertDtype(out_.dtype, dtype)
  
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 13 for calling the DtypeTestCase obj's underlying member method code with example usage: obj.test_unary_op_mult_out_given_shape(func_name, array_shape, func_array) without return types