mirror of
https://github.com/uutils/coreutils
synced 2024-12-13 14:52:41 +00:00
72 lines
1.9 KiB
Rust
72 lines
1.9 KiB
Rust
use std::io::Read;
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use crate::common::util::*;
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/// Run `yes`, capture some of the output, close the pipe, and verify it.
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fn run(args: &[&str], expected: &[u8]) {
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let mut cmd = new_ucmd!();
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let mut child = cmd.args(args).run_no_wait();
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let mut stdout = child.stdout.take().unwrap();
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let mut buf = vec![0; expected.len()];
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stdout.read_exact(&mut buf).unwrap();
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drop(stdout);
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assert!(child.wait().unwrap().success());
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assert_eq!(buf.as_slice(), expected);
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}
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#[test]
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fn test_simple() {
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run(&[], b"y\ny\ny\ny\n");
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}
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#[test]
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fn test_args() {
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run(&["a", "bar", "c"], b"a bar c\na bar c\na ba");
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}
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#[test]
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fn test_long_output() {
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run(&[], "y\n".repeat(512 * 1024).as_bytes());
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}
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/// Test with an output that seems likely to get mangled in case of incomplete writes.
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#[test]
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fn test_long_odd_output() {
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run(&["abcdef"], "abcdef\n".repeat(1024 * 1024).as_bytes());
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}
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/// Test with an input that doesn't fit in the standard buffer.
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#[test]
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fn test_long_input() {
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#[cfg(not(windows))]
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const TIMES: usize = 14000;
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// On Windows the command line is limited to 8191 bytes.
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// This is not actually enough to fill the buffer, but it's still nice to
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// try something long.
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#[cfg(windows)]
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const TIMES: usize = 500;
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let arg = "abcdef".repeat(TIMES) + "\n";
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let expected_out = arg.repeat(30);
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run(&[&arg[..arg.len() - 1]], expected_out.as_bytes());
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}
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#[test]
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#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "netbsd"))]
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fn test_piped_to_dev_full() {
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use std::fs::OpenOptions;
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for append in [true, false] {
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{
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let dev_full = OpenOptions::new()
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.write(true)
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.append(append)
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.open("/dev/full")
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.unwrap();
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new_ucmd!()
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.set_stdout(dev_full)
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.fails()
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.stderr_contains("No space left on device");
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}
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}
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}
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