code: def test_is_square_vec(self, n_reps):
      mat = self.data_generator.random_square_mat()
  
      expected = Matrices.is_square(mat)
      vec_data = generate_vectorization_data(
          data=[dict(mat=mat, expected=expected)],
          arg_names=["mat"],
          expected_name="expected",
          n_reps=n_reps,
      )
      self._test_vectorization(vec_data)
  
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 20 for calling the MatrixOperationsTestCase obj's underlying member method code with example usage: obj.test_is_square_vec(n_reps) without return types