fcoreutils 0.22.0

High-performance GNU coreutils replacement with SIMD and parallelism
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70

// ffalse — exit with status 1
//
// GNU false ignores ALL arguments and always exits 1.

fn main() {
    // false always exits 1, ignoring all arguments
    std::process::exit(1);
}

#[cfg(test)]
mod tests {
    use std::process::Command;

    fn cmd() -> Command {
        let mut path = std::env::current_exe().unwrap();
        path.pop();
        path.pop();
        path.push("ffalse");
        Command::new(path)
    }

    #[test]
    fn test_false_exit_code() {
        let output = cmd().output().unwrap();
        assert_eq!(output.status.code(), Some(1));
        assert!(output.stdout.is_empty());
    }

    #[test]
    fn test_false_ignores_args() {
        let output = cmd().args(["foo", "bar", "--baz"]).output().unwrap();
        assert_eq!(output.status.code(), Some(1));
    }
    #[test]
    fn test_false_matches_gnu() {
        let gnu = Command::new("false").output();
        if let Ok(gnu) = gnu {
            let ours = cmd().output().unwrap();
            assert_eq!(ours.status.code(), gnu.status.code(), "Exit code mismatch");
        }
    }

    #[test]
    fn test_false_no_stderr() {
        let output = cmd().output().unwrap();
        assert!(output.stderr.is_empty());
    }

    #[test]
    fn test_false_with_many_args() {
        let output = cmd()
            .args(["a", "b", "c", "d", "e", "f", "--flag", "-x"])
            .output()
            .unwrap();
        assert_eq!(output.status.code(), Some(1));
        assert!(output.stdout.is_empty());
    }

    #[test]
    fn test_false_with_dash_dash() {
        let output = cmd().args(["--", "arg"]).output().unwrap();
        assert_eq!(output.status.code(), Some(1));
    }

    #[test]
    fn test_false_with_empty_string() {
        let output = cmd().arg("").output().unwrap();
        assert_eq!(output.status.code(), Some(1));
    }
}