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clap/tests/default_vals.rs
liudingming 6094520541 Don't show default_val in smart usage
2021-07-21 02:50:41 +08:00

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mod utils;
use clap::{App, Arg, ErrorKind};
#[test]
fn opts() {
let r = App::new("df")
.arg(Arg::from("-o [opt] 'some opt'").default_value("default"))
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("o"));
assert_eq!(m.value_of("o").unwrap(), "default");
}
#[test]
fn opt_without_value_fail() {
let r = App::new("df")
.arg(
Arg::from("-o [opt] 'some opt'")
.default_value("default")
.forbid_empty_values(true),
)
.try_get_matches_from(vec!["", "-o"]);
assert!(r.is_err());
let err = r.unwrap_err();
assert_eq!(err.kind, ErrorKind::EmptyValue);
assert!(err
.to_string()
.contains("The argument '-o <opt>' requires a value but none was supplied"));
}
#[test]
fn opt_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'").default_value("default"))
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("opt"));
assert_eq!(m.value_of("opt").unwrap(), "value");
}
#[test]
fn positionals() {
let r = App::new("df")
.arg(Arg::from("[arg] 'some opt'").default_value("default"))
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn positional_user_override() {
let r = App::new("df")
.arg(Arg::from("[arg] 'some arg'").default_value("default"))
.try_get_matches_from(vec!["", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "value");
}
// OsStr Default Values
#[test]
fn osstr_opts() {
use std::ffi::OsStr;
let expected = OsStr::new("default");
let r = App::new("df")
.arg(Arg::from("-o [opt] 'some opt'").default_value_os(expected))
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("o"));
assert_eq!(m.value_of("o").unwrap(), expected);
}
#[test]
fn osstr_opt_user_override() {
use std::ffi::OsStr;
let default = OsStr::new("default");
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'").default_value_os(default))
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("opt"));
assert_eq!(m.value_of("opt").unwrap(), "value");
}
#[test]
fn osstr_positionals() {
use std::ffi::OsStr;
let expected = OsStr::new("default");
let r = App::new("df")
.arg(Arg::from("[arg] 'some opt'").default_value_os(expected))
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), expected);
}
#[test]
fn osstr_positional_user_override() {
use std::ffi::OsStr;
let default = OsStr::new("default");
let r = App::new("df")
.arg(Arg::from("[arg] 'some arg'").default_value_os(default))
.try_get_matches_from(vec!["", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "value");
}
// --- Default if arg is present
#[test]
fn default_if_arg_present_no_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", None, Some("default")))
.try_get_matches_from(vec!["", "--opt", "some"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn default_if_arg_present_no_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", None, Some("default")))
.try_get_matches_from(vec!["", "--opt", "some", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn default_if_arg_present_no_arg_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", None, Some("default")),
)
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "first");
}
#[test]
fn default_if_arg_present_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", None, Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "some"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn default_if_arg_present_with_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", None, Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "some", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn default_if_arg_present_no_arg_with_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", None, Some("default")),
)
.try_get_matches_from(vec!["", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
// Conditional Default Values
#[test]
fn default_if_arg_present_with_value_no_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", Some("value"), Some("default")))
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn default_if_arg_present_with_value_no_default_fail() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", Some("value"), Some("default")))
.try_get_matches_from(vec!["", "--opt", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(!m.is_present("arg"));
}
#[test]
fn default_if_arg_present_with_value_no_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", Some("some"), Some("default")))
.try_get_matches_from(vec!["", "--opt", "some", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn default_if_arg_present_with_value_no_arg_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "first");
}
#[test]
fn default_if_arg_present_with_value_no_arg_with_default_fail() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "first");
}
#[test]
fn default_if_arg_present_with_value_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "some"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn default_if_arg_present_with_value_with_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "some", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn default_if_arg_present_no_arg_with_value_with_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec!["", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn default_if_arg_present_no_arg_with_value_with_default_user_override_fail() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_if("opt", Some("some"), Some("default")),
)
.try_get_matches_from(vec!["", "--opt", "value", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
// Unsetting the default
#[test]
fn option_default_if_arg_present_with_value_no_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", Some("value"), Some("default")))
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn no_default_if_arg_present_with_value_no_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("[arg] 'some arg'").default_value_if("opt", Some("value"), None))
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(!m.is_present("arg"));
}
#[test]
fn no_default_if_arg_present_with_value_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("default")
.default_value_if("opt", Some("value"), None),
)
.try_get_matches_from(vec!["", "--opt", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(!m.is_present("arg"));
}
#[test]
fn no_default_if_arg_present_with_value_with_default_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("default")
.default_value_if("opt", Some("value"), None),
)
.try_get_matches_from(vec!["", "--opt", "value", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "other");
}
#[test]
fn no_default_if_arg_present_no_arg_with_value_with_default() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("default")
.default_value_if("opt", Some("value"), None),
)
.try_get_matches_from(vec!["", "--opt", "other"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
// Multiple conditions
#[test]
fn default_ifs_arg_present() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("--flag 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_ifs(&[
("opt", Some("some"), Some("default")),
("flag", None, Some("flg")),
]),
)
.try_get_matches_from(vec!["", "--flag"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "flg");
}
#[test]
fn no_default_ifs_arg_present() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("--flag 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_ifs(&[("opt", Some("some"), Some("default")), ("flag", None, None)]),
)
.try_get_matches_from(vec!["", "--flag"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(!m.is_present("arg"));
}
#[test]
fn default_ifs_arg_present_user_override() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("--flag 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_ifs(&[
("opt", Some("some"), Some("default")),
("flag", None, Some("flg")),
]),
)
.try_get_matches_from(vec!["", "--flag", "value"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "value");
}
#[test]
fn default_ifs_arg_present_order() {
let r = App::new("df")
.arg(Arg::from("--opt [FILE] 'some arg'"))
.arg(Arg::from("--flag 'some arg'"))
.arg(
Arg::from("[arg] 'some arg'")
.default_value("first")
.default_value_ifs(&[
("opt", Some("some"), Some("default")),
("flag", None, Some("flg")),
]),
)
.try_get_matches_from(vec!["", "--opt=some", "--flag"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("arg"));
assert_eq!(m.value_of("arg").unwrap(), "default");
}
#[test]
fn conditional_reqs_fail() {
let m = App::new("Test app")
.version("1.0")
.author("F0x06")
.about("Arg test")
.arg(
Arg::new("target")
.takes_value(true)
.default_value("file")
.possible_values(&["file", "stdout"])
.long("target"),
)
.arg(
Arg::new("input")
.takes_value(true)
.required(true)
.long("input"),
)
.arg(
Arg::new("output")
.takes_value(true)
.required_if_eq("target", "file")
.long("output"),
)
.try_get_matches_from(vec!["test", "--input", "some"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::MissingRequiredArgument);
}
#[test]
fn conditional_reqs_pass() {
let m = App::new("Test app")
.version("1.0")
.author("F0x06")
.about("Arg test")
.arg(
Arg::new("target")
.takes_value(true)
.default_value("file")
.possible_values(&["file", "stdout"])
.long("target"),
)
.arg(
Arg::new("input")
.takes_value(true)
.required(true)
.long("input"),
)
.arg(
Arg::new("output")
.takes_value(true)
.required_if_eq("target", "file")
.long("output"),
)
.try_get_matches_from(vec!["test", "--input", "some", "--output", "other"]);
assert!(m.is_ok());
let m = m.unwrap();
assert_eq!(m.value_of("output"), Some("other"));
assert_eq!(m.value_of("input"), Some("some"));
}
#[test]
fn multiple_defaults() {
let r = App::new("diff")
.arg(
Arg::new("files")
.long("files")
.number_of_values(2)
.default_values(&["old", "new"]),
)
.try_get_matches_from(vec![""]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("files"));
assert_eq!(m.values_of_lossy("files").unwrap(), vec!["old", "new"]);
}
#[test]
fn multiple_defaults_override() {
let r = App::new("diff")
.arg(
Arg::new("files")
.long("files")
.number_of_values(2)
.default_values(&["old", "new"]),
)
.try_get_matches_from(vec!["", "--files", "other", "mine"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("files"));
assert_eq!(m.values_of_lossy("files").unwrap(), vec!["other", "mine"]);
}
#[test]
fn default_vals_donnot_show_in_smart_usage() {
let app = App::new("bug")
.arg(
Arg::new("foo")
.long("config")
.takes_value(true)
.default_value("bar"),
)
.arg(Arg::new("input").required(true));
assert!(utils::compare_output(
app,
"bug",
"error: The following required arguments were not provided:
<input>
USAGE:
bug [OPTIONS] <input>
For more information try --help",
true,
));
}
#[test]
fn issue_1050_num_vals_and_defaults() {
let res = App::new("hello")
.arg(
Arg::new("exit-code")
.long("exit-code")
.takes_value(true)
.number_of_values(1)
.default_value("0"),
)
.try_get_matches_from(vec!["hello", "--exit-code=1"]);
assert!(res.is_ok());
let m = res.unwrap();
assert_eq!(m.value_of("exit-code"), Some("1"));
}
#[cfg(debug_assertions)]
#[test]
#[should_panic = "Argument group 'group' is required but contains argument 'arg' which has a default value."]
fn required_groups_with_default_values() {
use clap::{App, Arg, ArgGroup};
let _ = App::new("test")
.arg(Arg::new("arg").default_value("value"))
.group(ArgGroup::new("group").args(&["arg"]).required(true))
.try_get_matches();
}
#[cfg(debug_assertions)]
#[test]
#[should_panic = "Argument 'arg' is required and can't have a default value"]
fn required_args_with_default_values() {
use clap::{App, Arg};
let _ = App::new("test")
.arg(Arg::new("arg").required(true).default_value("value"))
.try_get_matches();
}
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