text: from unittest.mock import patch
  
  import numpy as np
  
  from lambeq import QuantumModel
  
  
  @patch.multiple(QuantumModel, __abstractmethods__=set())
  def test_normalise():
      model = QuantumModel()
      inputs = np.linspace(-10,10,21)
      normalised = model._normalise_vector(inputs)
      assert abs(normalised.sum()-1.0)<1e-8
      assert np.all(normalised>=0)
  