gitnu 0.4.8

gitnu indexes your git status so you can use numbers instead of filenames.
Documentation 
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use crate::{parser, App, Subcommand};
use std::path::PathBuf;
use std::process::Command;
use std::{env, iter};
use Subcommand::*;

macro_rules! test {
    ($name:ident, $received:expr, $expected:expr) => {
        #[test]
        fn $name() {
            env::set_current_dir(env::temp_dir()).ok();
            assert_eq!($received, $expected);
        }
    };
}

/// for simulating gitnu's parser
macro_rules! parse {
    ($args:expr, $cwd:expr) => {{
        let args = iter::once("".to_string())
            .chain($args.iter().map(|v| v.to_string()));
        parser::parse(args, PathBuf::from($cwd))
    }};
}

/// for quickly generating expected values
macro_rules! app {
    ($args:expr, $cwd:expr, $sc:expr, $pargs:expr) => {
        quick_app(&$args, $cwd, $sc, &$pargs)
    };
    ($args:expr, $cwd:expr, $sc:expr) => {
        quick_app(&$args, $cwd, $sc, &[])
    };
}

fn quick_app(args: &[&str], cwd: &str, sc: Subcommand, pargs: &[&str]) -> App {
    let pargs = pargs.iter().map(|v| v.to_string()).collect();
    let mut cmd = Command::new("");
    if atty::is(atty::Stream::Stdout) {
        cmd.args(["-c", "color.ui=always"]);
    }
    cmd.args(args).current_dir(cwd);
    let cwd = PathBuf::from(cwd);
    App { subcommand: sc, cmd, cwd, pargs, cache: vec![] }
}

impl PartialEq for App {
    fn eq(&self, b: &Self) -> bool {
        let subcommand = self.subcommand == b.subcommand;
        let cmd = self.cmd.get_args().eq(b.cmd.get_args())
            && self.cmd.get_current_dir().eq(&b.cmd.get_current_dir());
        subcommand && self.cwd.eq(&b.cwd) && cmd && self.pargs.eq(&b.pargs)
    }
}

#[test]
fn partial_eq_works() {
    assert_ne!(app!(["a"], "", Unset, [""]), app!(["b"], "", Unset, [""]));
    assert_ne!(app!([""], "a", Unset, [""]), app!([""], "b", Unset, [""]));
    assert_ne!(app!([""], "", Unset, [""]), app!([""], "", Number, [""]));
    assert_ne!(app!([""], "", Unset, ["a"]), app!([""], "", Unset, ["b"]));
}

test!(
    parse_no_ops,
    parse!(["-C", "/tmp"], "/home"),
    app!(["-C", "/tmp"], "/tmp", Unset, ["-C", "/tmp"])
);

test!(
    parse_status,
    parse!(["status"], "/tmp"),
    app!(["status"], "/tmp", Status(true))
);

test!(
    parse_status_diff_dir,
    parse!(["-C", "/tmp", "status"], "/home"),
    app!(["-C", "/tmp", "status"], "/tmp", Status(true), ["-C", "/tmp"])
);

test!(
    parse_enumerate_single,
    parse!(["add", "1"], "/home"),
    app!(["add", "1"], "/home", Number)
);

test!(
    parse_enumerate_range,
    parse!(["add", "2-4"], "/home"),
    app!(["add", "2", "3", "4"], "/home", Number)
);

test!(
    parse_enumerate_mix,
    parse!(["add", "8", "2-4"], "/home"),
    app!(["add", "8", "2", "3", "4"], "/home", Number)
);

test!(
    parse_enumerate_overlap,
    parse!(["add", "3", "2-4"], "/home"),
    app!(["add", "3", "2", "3", "4"], "/home", Number)
);

test!(
    parse_enumerate_double_dash,
    parse!(["add", "8", "--", "2-4"], "/home"),
    app!(["add", "8", "--", "2-4"], "/home", Number)
);

test!(
    parse_general,
    parse!(["-C", "/tmp", "add", "2-4"], "/home"),
    app!(["-C", "/tmp", "add", "2", "3", "4"], "/tmp", Number, ["-C", "/tmp"])
);

test!(
    parse_version,
    parse!(["--version"], "/home"),
    app!(["--version"], "/home", Version)
);

test!(
    parse_version_weird,
    parse!(["--version", "status"], "/home"),
    app!(["--version", "status"], "/home", Version)
);