code: def unary_op_vec_test_data(self):
      smoke_data = [
          dict(func_name="trace", a=rand(3, 3)),
          dict(
              func_name="linalg.cholesky",
              a=SPDMatrices(3).random_point(),
          ),
          dict(
              func_name="linalg.eigvalsh",
              a=SymmetricMatrices(3).random_point(),
          ),
      ]
      smoke_data += self._logm_expm_data()
      smoke_data += self._logm_expm_data("linalg.expm")
  
      return self.generate_tests(smoke_data)
  
file_path: geomstats/tests/tests_geomstats/test_backend/data/backend.py
imports: import geomstats.backend
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.spd_matrices import SPDMatrices
  from geomstats.geometry.special_orthogonal import SpecialOrthogonal
  from geomstats.geometry.symmetric_matrices import SymmetricMatrices
  from geomstats.test.data import TestData
label_desc: Use image node_id 3 for calling the BackendTestData obj's underlying member method code with example usage: obj.unary_op_vec_test_data() and returns: self