clap/tests/builder/arg_matcher_assertions.rs

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#[cfg(debug_assertions)]
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use clap::{Arg, Command};
#[test]
#[cfg(debug_assertions)]
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#[should_panic = "`f` is not a name of an argument or a group."]
fn arg_matches_if_present_wrong_arg() {
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let m = Command::new("test")
.arg(Arg::new("flag").short('f'))
.try_get_matches_from(&["test", "-f"])
.unwrap();
assert!(m.is_present("flag"));
m.is_present("f");
}
#[test]
#[cfg(debug_assertions)]
#[should_panic = "Mismatch between definition and access of `o`. Unknown argument or group id. Make sure you are using the argument id and not the short or long flags"]
fn arg_matches_value_of_wrong_arg() {
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let m = Command::new("test")
.arg(Arg::new("opt").short('o').takes_value(true))
.try_get_matches_from(&["test", "-o", "val"])
.unwrap();
assert_eq!(m.get_one::<String>("opt").map(|v| v.as_str()), Some("val"));
m.get_one::<String>("o").map(|v| v.as_str());
}
#[test]
#[cfg(debug_assertions)]
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#[should_panic = "`seed` is not a name of a subcommand."]
fn arg_matches_subcommand_matches_wrong_sub() {
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let m = Command::new("test")
.subcommand(Command::new("speed"))
.try_get_matches_from(&["test", "speed"])
.unwrap();
assert!(m.subcommand_matches("speed").is_some());
m.subcommand_matches("seed");
}