old_contents: import numpy as np
  import pytest
  
  import clifford as cf
  
  
  class TestClosedForm:
  
      @pytest.mark.parametrize('p, q', [
          (p, total_dims - p)
          for total_dims in [1, 2, 3, 4, 5]
          for p in range(total_dims + 1)
      ])
      def test_hitzer_inverse(self, p, q):
          Ntests = 100
          layout, blades = cf.Cl(p, q)
          for i in range(Ntests):
              mv = layout.randomMV()
              mv_inv = mv.hitzer_inverse()
              assert np.all(np.abs(((mv * mv_inv) - 1.).value) < 1.e-11)
  
new_contents: import numpy as np
  import pytest
  
  import clifford as cf
  
  
  class TestClosedForm:
  
      @pytest.mark.parametrize('p, q', [
          (p, total_dims - p)
          for total_dims in [1, 2, 3, 4, 5]
          for p in range(total_dims + 1)
      ])
      def test_hitzer_inverse(self, p, q):
          Ntests = 100
          layout, blades = cf.Cl(p, q)
          for i in range(Ntests):
              mv = layout.randomMV()
              mv_inv = mv.hitzer_inverse()
              np.testing.assert_almost_equal((mv * mv_inv).value,
                                             (1.0 + 0*blades["e1"]).value)
  
subject: Swap hitzer inverse test to use np.testing