code: def test_left_exp_from_identity(self, tangent_vec, expected, atol):
      res = self.space.metric.left_exp_from_identity(tangent_vec)
      self.assertAllClose(res, expected, atol=atol)
  
imports: import pytest
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.riemannian_metric import RiemannianMetricTestCase
  from geomstats.vectorization import repeat_point
label_desc: Use image node_id 1 for calling the InvariantMetricVectorTestCase obj's underlying member method code with example usage: obj.test_left_exp_from_identity(tangent_vec, expected, atol) without return types