def METHOD_NAME(self):
    """Test CaPPBuilder on real PDB file."""
    ppb = CaPPBuilder()
    pp = ppb.build_peptides(self.structure)
    pp0_seq = pp[0].get_sequence()
    pp1_seq = pp[1].get_sequence()
    pp2_seq = pp[2].get_sequence()
    self.assertEqual(pp0_seq, "DIRQGPKEPFRDYVDRFYKTLRAEQASQEVKNW")
    self.assertEqual(pp1_seq, "TETLLVQNANPDCKTILKALGPGATLEE")
    self.assertEqual(pp2_seq, "TACQG")
    self.assertEqual(
        [ca.serial_number for ca in pp[0].get_ca_list()],
        [
            10,
            18,
            26,
            37,
            46,
            50,
            57,
            66,
            75,
            82,
            93,
            104,
            112,
            124,
            131,
            139,
            150,
            161,
            173,
            182,
            189,
            197,
            208,
            213,
            222,
            231,
            236,
            242,
            251,
            260,
            267,
            276,
            284,
        ],
    )