text: import pytest
  import warnings
  import numpy as np
  import wellfit as wf
  
  def test_initialization():
      '''Ensure that all the classes can be initialized'''
      star = wf.Star()
      planet = wf.Planet(host=star)
      model = wf.Model(host=star, planets=[planet])
      model = wf.Model(host=star, planets=[planet, planet])
  
      time = np.arange(-1, 1, 0.0001)
      # Check the model computes
      model.compute(time=time)
  