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test_tail: add tests for --follow=name --disable-inotify (polling)

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Jan Scheer 2021-09-28 00:16:23 +02:00
parent 5615ba9fe1
commit d9cd28fab6
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2 changed files with 90 additions and 0 deletions
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88
tests/by-util/test_tail.rs
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@ -521,6 +521,51 @@ fn test_follow_name_create() {
assert_eq!(buf_stderr, expected_stderr);
}
#[test]
fn test_follow_name_create_polling() {
// This test triggers a remove/create event while `tail --follow=name --disable-inotify logfile` is running.
// cp logfile backup && rm logfile && sleep 1 && cp backup logfile
let ts = TestScenario::new(util_name!());
let at = &ts.fixtures;
let source = FOLLOW_NAME_TXT;
let source_canonical = &at.plus(source);
let backup = at.plus_as_string("backup");
let expected_stdout = at.read(FOLLOW_NAME_EXP);
let expected_stderr = format!(
"{}: '{}' has been replaced; following new file\n",
ts.util_name, source
);
let args = ["--follow=name", "--disable-inotify", source];
let mut p = ts.ucmd().args(&args).run_no_wait();
let delay = 750;
std::fs::copy(&source_canonical, &backup).unwrap();
sleep(Duration::from_millis(delay));
std::fs::remove_file(source_canonical).unwrap();
sleep(Duration::from_millis(delay));
std::fs::copy(&backup, &source_canonical).unwrap();
sleep(Duration::from_millis(delay));
p.kill().unwrap();
let mut buf_stdout = String::new();
let mut p_stdout = p.stdout.take().unwrap();
p_stdout.read_to_string(&mut buf_stdout).unwrap();
assert_eq!(buf_stdout, expected_stdout);
let mut buf_stderr = String::new();
let mut p_stderr = p.stderr.take().unwrap();
p_stderr.read_to_string(&mut buf_stderr).unwrap();
assert_eq!(buf_stderr, expected_stderr);
}
#[test]
fn test_follow_name_move() {
// This test triggers a move event while `tail --follow=name logfile` is running.
@ -563,3 +608,46 @@ fn test_follow_name_move() {
p_stderr.read_to_string(&mut buf_stderr).unwrap();
assert_eq!(buf_stderr, expected_stderr);
}
#[test]
fn test_follow_name_move_polling() {
// This test triggers a move event while `tail --follow=name --disable-inotify logfile` is running.
// mv logfile backup && sleep 1 && mv backup file
let ts = TestScenario::new(util_name!());
let at = &ts.fixtures;
let source = FOLLOW_NAME_TXT;
let source_canonical = &at.plus(source);
let backup = at.plus_as_string("backup");
let expected_stdout = at.read("follow_name.expected");
let expected_stderr = format!(
"{}: '{}' has been replaced; following new file\n",
ts.util_name, source
);
let args = ["--follow=name", "--disable-inotify", source];
let mut p = ts.ucmd().args(&args).run_no_wait();
let delay = 750;
sleep(Duration::from_millis(delay));
std::fs::rename(&source_canonical, &backup).unwrap();
sleep(Duration::from_millis(delay));
std::fs::rename(&backup, &source_canonical).unwrap();
sleep(Duration::from_millis(delay));
p.kill().unwrap();
let mut buf_stdout = String::new();
let mut p_stdout = p.stdout.take().unwrap();
p_stdout.read_to_string(&mut buf_stdout).unwrap();
assert_eq!(buf_stdout, expected_stdout);
let mut buf_stderr = String::new();
let mut p_stderr = p.stderr.take().unwrap();
p_stderr.read_to_string(&mut buf_stderr).unwrap();
assert_eq!(buf_stderr, expected_stderr);
}