text: import pytest
  
  import stk
  
  from ..case_data import GenericCaseData
  
  
  @pytest.fixture
  def primary_amino(get_atom_ids):
      a, b, c, d = get_atom_ids(4)
      return _primary_amino(stk.N(a), stk.H(b), stk.H(c), stk.C(d))
  
  
  def _primary_amino(nitrogen, hydrogen1, hydrogen2, atom):
      bonders = (nitrogen, )
      deleters = (hydrogen1, hydrogen2)
      return GenericCaseData(
          functional_group=stk.PrimaryAmino(
              nitrogen=nitrogen,
              hydrogen1=hydrogen1,
              hydrogen2=hydrogen2,
              atom=atom,
              bonders=bonders,
              deleters=deleters,
          ),
          atoms=(nitrogen, hydrogen1, hydrogen2, atom),
          bonders=bonders,
          deleters=deleters,
      )
  