jqrutils 0.1.0

Small Unix utilities: quiet, errfail, prefix
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

use std::process::Command;
use std::time::Instant;

fn quiet() -> Command {
    Command::new(env!("CARGO_BIN_EXE_quiet"))
}

#[test]
fn success_suppresses_output() {
    let out = quiet()
        .args(["sh", "-c", "echo hello; echo world >&2"])
        .output()
        .unwrap();
    assert!(out.status.success());
    assert!(out.stdout.is_empty());
    assert!(out.stderr.is_empty());
}

#[test]
fn failure_shows_stdout() {
    let out = quiet()
        .args(["sh", "-c", "echo visible; exit 1"])
        .output()
        .unwrap();
    assert_eq!(out.status.code(), Some(1));
    assert_eq!(String::from_utf8_lossy(&out.stdout), "visible\n");
}

#[test]
fn failure_shows_stderr() {
    let out = quiet()
        .args(["sh", "-c", "echo oops >&2; exit 3"])
        .output()
        .unwrap();
    assert_eq!(out.status.code(), Some(3));
    assert_eq!(String::from_utf8_lossy(&out.stderr), "oops\n");
}

#[test]
fn preserves_exit_code() {
    let out = quiet().args(["sh", "-c", "exit 42"]).output().unwrap();
    assert_eq!(out.status.code(), Some(42));
}

#[test]
fn missing_command_exits_127() {
    let out = quiet()
        .args(["nonexistent_command_xyz_123"])
        .output()
        .unwrap();
    assert_eq!(out.status.code(), Some(127));
}

#[test]
fn no_args_shows_usage() {
    let out = quiet().output().unwrap();
    assert_eq!(out.status.code(), Some(1));
    assert!(String::from_utf8_lossy(&out.stderr).contains("Usage:"));
}

#[test]
fn double_dash_separator() {
    let out = quiet()
        .args(["--", "sh", "-c", "echo hidden"])
        .output()
        .unwrap();
    assert!(out.status.success());
    assert!(out.stdout.is_empty());
}

#[test]
fn timeout_shows_output_for_slow_command() {
    use std::io::Read;
    use std::process::Stdio;

    let start = Instant::now();
    let mut child = Command::new(env!("CARGO_BIN_EXE_quiet"))
        .args(["-t", "0.3", "sh", "-c", "echo early; sleep 2; echo late"])
        .stdout(Stdio::piped())
        .stderr(Stdio::null())
        .spawn()
        .unwrap();

    let mut stdout = child.stdout.take().unwrap();
    let mut buf = [0u8; 1024];
    let n = stdout.read(&mut buf).unwrap();
    let first_output_at = start.elapsed().as_secs_f64();
    assert!(n > 0);
    assert!(
        first_output_at >= 0.25 && first_output_at < 1.0,
        "first output arrived at {first_output_at:.2}s, expected ~0.3s"
    );

    let mut rest = String::from_utf8_lossy(&buf[..n]).to_string();
    let n = stdout.read_to_string(&mut rest).unwrap_or(0);
    let _ = n;
    let status = child.wait().unwrap();
    assert!(status.success());
    assert!(rest.contains("late"));
}

#[test]
fn timeout_suppresses_fast_success() {
    let out = quiet()
        .args(["-t", "5", "sh", "-c", "echo fast"])
        .output()
        .unwrap();
    assert!(out.status.success());
    assert!(out.stdout.is_empty());
}

#[test]
fn timeout_still_shows_on_failure() {
    let out = quiet()
        .args(["-t", "5", "sh", "-c", "echo fail; exit 1"])
        .output()
        .unwrap();
    assert_eq!(out.status.code(), Some(1));
    assert_eq!(String::from_utf8_lossy(&out.stdout), "fail\n");
}

#[test]
fn timeout_missing_value() {
    let out = quiet().args(["-t"]).output().unwrap();
    assert_eq!(out.status.code(), Some(1));
    let stderr = String::from_utf8_lossy(&out.stderr);
    assert!(stderr.contains("-t requires a numeric argument"), "{stderr}");
}

#[test]
fn timeout_invalid_value() {
    let out = quiet().args(["-t", "notanumber"]).output().unwrap();
    assert_eq!(out.status.code(), Some(1));
    let stderr = String::from_utf8_lossy(&out.stderr);
    assert!(stderr.contains("invalid timeout 'notanumber'"), "{stderr}");
}