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clap/tests/help.rs
Salim Afiune 33b5f6ef2c feat(arg_aliases): Ability to alias arguments 
There are some cases where you need to have an argument to have an
alias, an example could be when you depricate one option in favor of
another one.

Now you are going to be able to alias arguments as follows:
```
Arg::with_name("opt")
    .long("opt")
    .short("o")
    .takes_value(true)
    .alias("invisible")
    .visible_alias("visible")
```

Closes #669
2016-10-04 12:26:51 -04:00

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extern crate clap;
extern crate regex;
include!("../clap-test.rs");
use clap::{App, SubCommand, ErrorKind, Arg};
static HELP: &'static str = "clap-test v1.4.8
Kevin K. <kbknapp@gmail.com>
tests clap library
USAGE:
clap-test [FLAGS] [OPTIONS] [ARGS] [SUBCOMMAND]
FLAGS:
-f, --flag tests flags
-F tests flags with exclusions
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-O, --Option <option3> specific vals [values: fast, slow]
--long-option-2 <option2> tests long options with exclusions
--maxvals3 <maxvals>... Tests 3 max vals
--minvals2 <minvals>... Tests 2 min vals
--multvals <one> <two> Tests mutliple values, not mult occs
--multvalsmo <one> <two> Tests mutliple values, and mult occs
-o, --option <opt>... tests options
ARGS:
<positional> tests positionals
<positional2> tests positionals with exclusions
<positional3>... tests specific values [values: vi, emacs]
SUBCOMMANDS:
help Prints this message or the help of the given subcommand(s)
subcmd tests subcommands";
static AFTER_HELP: &'static str = "some text that comes before the help
clap-test v1.4.8
tests clap library
USAGE:
clap-test
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
some text that comes after the help";
static SC_HELP: &'static str = "subcmd 0.1
Kevin K. <kbknapp@gmail.com>
tests subcommands
USAGE:
subcmd [FLAGS] [OPTIONS] [--] [scpositional]
FLAGS:
-f, --flag tests flags
OPTIONS:
-o, --option <scoption>... tests options
ARGS:
<scpositional> tests positionals";
static MULTI_SC_HELP: &'static str = "ctest-subcmd-multi 0.1
Kevin K. <kbknapp@gmail.com>
tests subcommands
USAGE:
ctest subcmd multi [FLAGS] [OPTIONS]
FLAGS:
-f, --flag tests flags
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-o, --option <scoption>... tests options";
static ISSUE_626_CUTOFF: &'static str = "ctest 0.1
USAGE:
ctest [OPTIONS]
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-c, --cafe <FILE> A coffeehouse, coffee shop, or café is an
establishment which primarily serves hot
coffee, related coffee beverages (e.g., café
latte, cappuccino, espresso), tea, and other
hot beverages. Some coffeehouses also serve
cold beverages such as iced coffee and iced
tea. Many cafés also serve some type of
food, such as light snacks, muffins, or
pastries.";
static ISSUE_626_PANIC: &'static str = "ctest 0.1
USAGE:
ctest [OPTIONS]
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-c, --cafe <FILE>
La culture du café est très développée
dans de nombreux pays à climat chaud
d\'Amérique, d\'Afrique et d\'Asie, dans
des plantations qui sont cultivées pour
les marchés d\'exportation. Le café est
souvent une contribution majeure aux
exportations des régions productrices.";
static HIDE_POS_VALS: &'static str = "ctest 0.1
USAGE:
ctest [OPTIONS]
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-c, --cafe <FILE> A coffeehouse, coffee shop, or café.
-p, --pos <VAL> Some vals [values: fast, slow]";
static OLD_NEWLINE_CHARS: &'static str = "ctest 0.1
USAGE:
ctest [FLAGS]
FLAGS:
-h, --help Prints help information
-m Some help with some wrapping
(Defaults to something)
-V, --version Prints version information";
#[test]
fn help_short() {
let m = App::new("test")
.author("Kevin K.")
.about("tests stuff")
.version("1.3")
.get_matches_from_safe(vec!["myprog", "-h"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn help_long() {
let m = App::new("test")
.author("Kevin K.")
.about("tests stuff")
.version("1.3")
.get_matches_from_safe(vec!["myprog", "--help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn help_no_subcommand() {
let m = App::new("test")
.author("Kevin K.")
.about("tests stuff")
.version("1.3")
.get_matches_from_safe(vec!["myprog", "help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::UnknownArgument);
}
#[test]
fn help_subcommand() {
let m = App::new("test")
.author("Kevin K.")
.about("tests stuff")
.version("1.3")
.subcommand(SubCommand::with_name("test")
.about("tests things")
.arg_from_usage("-v --verbose 'with verbosity'"))
.get_matches_from_safe(vec!["myprog", "help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn subcommand_short_help() {
let m = test::complex_app()
.get_matches_from_safe(vec!["clap-test", "subcmd", "-h"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn subcommand_long_help() {
let m = test::complex_app()
.get_matches_from_safe(vec!["clap-test", "subcmd", "--help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn subcommand_help_rev() {
let m = test::complex_app()
.get_matches_from_safe(vec!["clap-test", "help", "subcmd"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind, ErrorKind::HelpDisplayed);
}
#[test]
fn complex_help_output() {
test::check_help(test::complex_app(), HELP);
}
#[test]
fn after_and_before_help_output() {
let app = App::new("clap-test")
.version("v1.4.8")
.about("tests clap library")
.before_help("some text that comes before the help")
.after_help("some text that comes after the help");
test::check_help(app, AFTER_HELP);
}
#[test]
fn multi_level_sc_help() {
let app = App::new("ctest")
.subcommand(SubCommand::with_name("subcmd")
.subcommand(SubCommand::with_name("multi")
.about("tests subcommands")
.author("Kevin K. <kbknapp@gmail.com>")
.version("0.1")
.args_from_usage("
-f, --flag 'tests flags'
-o, --option [scoption]... 'tests options'
")));
test::check_err_output(app, "ctest help subcmd multi", MULTI_SC_HELP, false);
}
#[test]
fn no_wrap_help() {
let app = App::new("ctest")
.set_term_width(0)
.help(MULTI_SC_HELP);
test::check_err_output(app, "ctest --help", MULTI_SC_HELP, false);
}
#[test]
fn complex_subcommand_help_output() {
let a = test::complex_app();
test::check_subcommand_help(a, "subcmd", SC_HELP);
}
#[test]
fn issue_626_unicode_cutoff() {
let app = App::new("ctest")
.version("0.1")
.set_term_width(70)
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
.value_name("FILE")
.help("A coffeehouse, coffee shop, or café is an establishment \
which primarily serves hot coffee, related coffee beverages \
(e.g., café latte, cappuccino, espresso), tea, and other hot \
beverages. Some coffeehouses also serve cold beverages such as \
iced coffee and iced tea. Many cafés also serve some type of \
food, such as light snacks, muffins, or pastries.")
.takes_value(true));
test::check_err_output(app, "ctest --help", ISSUE_626_CUTOFF, false);
}
#[test]
fn hide_possible_vals() {
let app = App::new("ctest")
.version("0.1")
.arg(Arg::with_name("pos")
.short("p")
.long("pos")
.value_name("VAL")
.possible_values(&["fast", "slow"])
.help("Some vals")
.takes_value(true))
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
.value_name("FILE")
.hide_possible_values(true)
.possible_values(&["fast", "slow"])
.help("A coffeehouse, coffee shop, or café.")
.takes_value(true));
test::check_err_output(app, "ctest --help", HIDE_POS_VALS, false);
}
#[test]
fn issue_626_panic() {
let app = App::new("ctest")
.version("0.1")
.set_term_width(52)
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
.value_name("FILE")
.help("La culture du café est très développée dans de nombreux pays à climat chaud d'Amérique, \
d'Afrique et d'Asie, dans des plantations qui sont cultivées pour les marchés d'exportation. \
Le café est souvent une contribution majeure aux exportations des régions productrices.")
.takes_value(true));
test::check_err_output(app, "ctest --help", ISSUE_626_PANIC, false);
}
#[test]
fn issue_626_variable_panic() {
for i in 10..320 {
let _ = App::new("ctest")
.version("0.1")
.set_term_width(i)
.arg(Arg::with_name("cafe")
.short("c")
.long("cafe")
.value_name("FILE")
.help("La culture du café est très développée dans de nombreux pays à climat chaud d'Amérique, \
d'Afrique et d'Asie, dans des plantations qui sont cultivées pour les marchés d'exportation. \
Le café est souvent une contribution majeure aux exportations des régions productrices.")
.takes_value(true))
.get_matches_from_safe(vec!["ctest", "--help"]);
}
}
#[test]
fn old_newline_chars() {
let app = App::new("ctest")
.version("0.1")
.arg(Arg::with_name("mode")
.short("m")
.help("Some help with some wrapping{n}(Defaults to something)"));
test::check_err_output(app, "ctest --help", OLD_NEWLINE_CHARS, false);
}
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