text: import wicked as w
  import pytest
  
  
  def test_orbital_space():
      w.reset_space()
      w.add_space("c", "fermion", "occupied", ["m", "n"])
      w.add_space("a", "fermion", "general", ["u", "v", "w", "x", "y", "z"])
      w.add_space("v", "fermion", "unoccupied", ["e", "f"])
      assert w.num_spaces() == 3
  
  
  def test_orbital_space_exceptions():
      w.reset_space()
      w.add_space("c", "fermion", "occupied", ["m", "n"])
      with pytest.raises(Exception):
          w.add_space("c", "fermion", "occupied", ["m", "n"])
      with pytest.raises(Exception):
          w.add_space("v", "fermion", "occupied", ["m", "n"])
  
  
  if __name__ == "__main__":
      test_orbital_space()
      test_orbital_space_exceptions()
  