20     struct Opt {  in basic()  struct
25         Opt { arg: 24 },  in basic()
26         Opt::try_parse_from(["test", "-a24"]).unwrap()  in basic()
33     struct Opt {  in update_basic()  struct
40     let mut opt = Opt::try_parse_from(["test", "-f0", "-s1"]).unwrap();  in update_basic()
45         Opt {  in update_basic()
56     struct Opt {  in update_explicit_required()  struct
63     let mut opt = Opt::try_parse_from(["test", "-f0", "-s1"]).unwrap();  in update_explicit_required()
68         Opt {  in update_explicit_required()
79     struct Opt;  in unit_struct()  struct
81     assert_eq!(Opt {}, Opt::try_parse_from(["test"]).unwrap());  in unit_struct()