code: def test_reshape_after_flatten(self, n_points, atol):
      point = self.data_generator.random_point(n_points)
  
      vec = Matrices.flatten(point)
      point_ = self.space.reshape(vec)
      self.assertAllClose(point, point_, atol=atol)
  
imports: import pytest
  import geomstats.backend
  from geomstats.geometry.matrices import Matrices
  from geomstats.test.test_case import TestCase
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.base import MatrixVectorSpaceTestCase
  from geomstats.test_cases.geometry.euclidean import EuclideanMetricTestCase
label_desc: Use image node_id 1 for calling the MatricesTestCase obj's underlying member method code with example usage: obj.test_reshape_after_flatten(n_points, atol) without return types