mirror of
https://github.com/clap-rs/clap
synced 2024-12-14 23:02:31 +00:00
122 lines
2.7 KiB
Rust
122 lines
2.7 KiB
Rust
use clap::Parser;
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use crate::utils::assert_output;
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#[test]
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fn test_safely_nest_parser() {
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#[derive(Parser, Debug, PartialEq)]
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struct Opt {
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#[command(flatten)]
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foo: Foo,
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}
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#[derive(Parser, Debug, PartialEq)]
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struct Foo {
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#[arg(long)]
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foo: bool,
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}
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assert_eq!(
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Opt {
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foo: Foo { foo: true }
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},
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Opt::try_parse_from(["test", "--foo"]).unwrap()
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);
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}
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#[test]
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fn implicit_struct_group() {
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#[derive(Parser, Debug)]
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struct Opt {
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#[arg(short, long, requires = "Source")]
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add: bool,
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#[command(flatten)]
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source: Source,
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}
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#[derive(clap::Args, Debug)]
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struct Source {
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crates: Vec<String>,
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#[arg(long)]
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path: Option<std::path::PathBuf>,
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#[arg(long)]
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git: Option<String>,
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}
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const OUTPUT: &str = "\
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error: The following required arguments were not provided:
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<CRATES|--path <PATH>|--git <GIT>>
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Usage: prog --add <CRATES|--path <PATH>|--git <GIT>>
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For more information try '--help'
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";
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assert_output::<Opt>("prog --add", OUTPUT, true);
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use clap::Args;
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assert_eq!(Source::group_id(), Some(clap::Id::from("Source")));
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assert_eq!(Opt::group_id(), Some(clap::Id::from("Opt")));
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}
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#[test]
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fn skip_group_avoids_duplicate_ids() {
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#[derive(Parser, Debug)]
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#[group(skip)]
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struct Opt {
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#[command(flatten)]
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first: Compose<Empty, Empty>,
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#[command(flatten)]
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second: Compose<Empty, Empty>,
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}
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#[derive(clap::Args, Debug)]
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#[group(skip)]
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pub struct Compose<L: clap::Args, R: clap::Args> {
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#[clap(flatten)]
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pub left: L,
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#[clap(flatten)]
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pub right: R,
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}
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#[derive(clap::Args, Clone, Copy, Debug)]
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#[group(skip)]
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pub struct Empty;
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use clap::CommandFactory;
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Opt::command().debug_assert();
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use clap::Args;
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assert_eq!(Empty::group_id(), None);
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assert_eq!(Compose::<Empty, Empty>::group_id(), None);
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assert_eq!(Opt::group_id(), None);
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}
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#[test]
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#[should_panic = "\
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Command clap: Argument group name must be unique
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\t'Compose' is already in use (note: `Args` implicitly creates `ArgGroup`s; disable with `#[group(skip)]`"]
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fn helpful_panic_on_duplicate_groups() {
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#[derive(Parser, Debug)]
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struct Opt {
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#[command(flatten)]
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first: Compose<Empty, Empty>,
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#[command(flatten)]
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second: Compose<Empty, Empty>,
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}
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#[derive(clap::Args, Debug)]
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pub struct Compose<L: clap::Args, R: clap::Args> {
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#[clap(flatten)]
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pub left: L,
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#[clap(flatten)]
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pub right: R,
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}
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#[derive(clap::Args, Clone, Copy, Debug)]
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pub struct Empty;
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use clap::CommandFactory;
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Opt::command().debug_assert();
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}
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