text: import pytest
  
  import stk
  
  
  @pytest.fixture(
      params=[
          lambda bond: {},
          lambda bond: {bond.get_atom1().get_id(): stk.Be(33)},
          lambda bond: {bond.get_atom2().get_id(): stk.Bi(122)},
          lambda bond: {
              bond.get_atom1().get_id(): stk.K(4),
              bond.get_atom2().get_id(): stk.S(7),
          },
      ],
  )
  def get_atom_map(request):
      """
      Return a valid `atom_map` parameter for a bond.
  
      Parameters
      ----------
      bond : :class:`.Bond`
          The bond, for which the `atom_map` parameter needs to be
          created.
  
      Returns
      -------
      :class:`dict`
          A valid `atom_map` parameter for :meth:`.Bond.with_atoms`.
  
      """
  
      return request.param
  