coreutils/tests/by-util/test_tac.rs

use crate::common::util::*;

#[test]
fn test_stdin_default() {
    new_ucmd!()
        .pipe_in("100\n200\n300\n400\n500")
        .run()
        .stdout_is("500400\n300\n200\n100\n");
}

#[test]
fn test_stdin_non_newline_separator() {
    new_ucmd!()
        .args(&["-s", ":"])
        .pipe_in("100:200:300:400:500")
        .run()
        .stdout_is("500400:300:200:100:");
}

#[test]
fn test_stdin_non_newline_separator_before() {
    new_ucmd!()
        .args(&["-b", "-s", ":"])
        .pipe_in("100:200:300:400:500")
        .run()
        .stdout_is("500:400:300:200:100");
}

#[test]
fn test_single_default() {
    new_ucmd!()
        .arg("prime_per_line.txt")
        .run()
        .stdout_is_fixture("prime_per_line.expected");
}

#[test]
fn test_single_non_newline_separator() {
    new_ucmd!()
        .args(&["-s", ":", "delimited_primes.txt"])
        .run()
        .stdout_is_fixture("delimited_primes.expected");
}

#[test]
fn test_single_non_newline_separator_before() {
    new_ucmd!()
        .args(&["-b", "-s", ":", "delimited_primes.txt"])
        .run()
        .stdout_is_fixture("delimited_primes_before.expected");
}

#[test]
fn test_invalid_input() {
    let scene = TestScenario::new(util_name!());
    let at = &scene.fixtures;

    scene
        .ucmd()
        .arg("b")
        .fails()
        .stderr_contains("failed to open 'b' for reading: No such file or directory");

    at.mkdir("a");
    scene
        .ucmd()
        .arg("a")
        .fails()
        .stderr_contains("a: read error: Invalid argument");
}

#[test]
fn test_no_line_separators() {
    new_ucmd!().pipe_in("a").succeeds().stdout_is("a");
}

#[test]
fn test_null_separator() {
    new_ucmd!()
        .args(&["-s", ""])
        .pipe_in("a\0b\0")
        .succeeds()
        .stdout_is("b\0a\0");
}