// * This file is part of the uutils coreutils package. // * // * For the full copyright and license information, please view the LICENSE // * file that was distributed with this source code. // spell-checker:ignore (ToDO) abcdefghijklmnopqrstuvwxyz efghijklmnopqrstuvwxyz vwxyz emptyfile file siette ocho nueve diez MULT // spell-checker:ignore (libs) kqueue // spell-checker:ignore (jargon) tailable untailable datasame runneradmin tmpi extern crate tail; use crate::common::random::*; use crate::common::util::*; use pretty_assertions::assert_eq; use rand::distributions::Alphanumeric; use rstest::rstest; use std::char::from_digit; use std::fs::File; use std::io::Write; #[cfg(not(target_vendor = "apple"))] use std::io::{Seek, SeekFrom}; #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] use std::path::Path; use std::process::Stdio; use tail::chunks::BUFFER_SIZE as CHUNK_BUFFER_SIZE; #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] use tail::text; static FOOBAR_TXT: &str = "foobar.txt"; static FOOBAR_2_TXT: &str = "foobar2.txt"; static FOOBAR_WITH_NULL_TXT: &str = "foobar_with_null.txt"; #[allow(dead_code)] static FOLLOW_NAME_TXT: &str = "follow_name.txt"; #[allow(dead_code)] static FOLLOW_NAME_SHORT_EXP: &str = "follow_name_short.expected"; #[allow(dead_code)] static FOLLOW_NAME_EXP: &str = "follow_name.expected"; #[cfg(not(windows))] const DEFAULT_SLEEP_INTERVAL_MILLIS: u64 = 1000; #[test] fn test_invalid_arg() { new_ucmd!().arg("--definitely-invalid").fails().code_is(1); } #[test] fn test_stdin_default() { new_ucmd!() .pipe_in_fixture(FOOBAR_TXT) .run() .stdout_is_fixture("foobar_stdin_default.expected") .no_stderr(); } #[test] fn test_stdin_explicit() { new_ucmd!() .pipe_in_fixture(FOOBAR_TXT) .arg("-") .run() .stdout_is_fixture("foobar_stdin_default.expected") .no_stderr(); } #[test] // FIXME: the -f test fails with: Assertion failed. Expected 'tail' to be running but exited with status=exit status: 0 #[cfg(disable_until_fixed)] #[cfg(not(target_vendor = "apple"))] // FIXME: for currently not working platforms fn test_stdin_redirect_file() { // $ echo foo > f // $ tail < f // foo // $ tail -f < f // foo // let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.write("f", "foo"); ts.ucmd() .set_stdin(File::open(at.plus("f")).unwrap()) .run() .stdout_is("foo") .succeeded(); ts.ucmd() .set_stdin(File::open(at.plus("f")).unwrap()) .arg("-v") .run() .no_stderr() .stdout_is("==> standard input <==\nfoo") .succeeded(); let mut p = ts .ucmd() .arg("-f") .set_stdin(File::open(at.plus("f")).unwrap()) .run_no_wait(); p.make_assertion_with_delay(500).is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_only("foo"); } #[test] #[cfg(not(target_vendor = "apple"))] // FIXME: for currently not working platforms fn test_stdin_redirect_offset() { // inspired by: "gnu/tests/tail-2/start-middle.sh" let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.write("k", "1\n2\n"); let mut fh = File::open(at.plus("k")).unwrap(); fh.seek(SeekFrom::Start(2)).unwrap(); ts.ucmd() .set_stdin(fh) .run() .no_stderr() .stdout_is("2\n") .succeeded(); } #[test] #[cfg(all(not(target_vendor = "apple"), not(target_os = "windows")))] // FIXME: for currently not working platforms fn test_stdin_redirect_offset2() { // FIXME: windows: Failed because of difference in printed header. See below. // actual : ==> - <== // expected: ==> standard input <== // like test_stdin_redirect_offset but with multiple files let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.write("k", "1\n2\n"); at.write("l", "3\n4\n"); at.write("m", "5\n6\n"); let mut fh = File::open(at.plus("k")).unwrap(); fh.seek(SeekFrom::Start(2)).unwrap(); ts.ucmd() .set_stdin(fh) .args(&["k", "-", "l", "m"]) .run() .no_stderr() .stdout_is( "==> k <==\n1\n2\n\n==> standard input <==\n2\n\n==> l <==\n3\n4\n\n==> m <==\n5\n6\n", ) .succeeded(); } #[test] fn test_nc_0_wo_follow() { // verify that -[nc]0 without -f, exit without reading let ts = TestScenario::new(util_name!()); ts.ucmd() .args(&["-n0", "missing"]) .run() .no_stderr() .no_stdout() .succeeded(); ts.ucmd() .args(&["-c0", "missing"]) .run() .no_stderr() .no_stdout() .succeeded(); } #[test] #[cfg(all(unix, not(target_os = "freebsd")))] fn test_nc_0_wo_follow2() { // verify that -[nc]0 without -f, exit without reading let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; use std::os::unix::fs::PermissionsExt; at.make_file("unreadable") .set_permissions(PermissionsExt::from_mode(0o000)) .unwrap(); ts.ucmd() .args(&["-n0", "unreadable"]) .run() .no_stderr() .no_stdout() .succeeded(); ts.ucmd() .args(&["-c0", "unreadable"]) .run() .no_stderr() .no_stdout() .succeeded(); } // TODO: Add similar test for windows #[test] #[cfg(unix)] fn test_permission_denied() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; use std::os::unix::fs::PermissionsExt; at.make_file("unreadable") .set_permissions(PermissionsExt::from_mode(0o000)) .unwrap(); ts.ucmd() .arg("unreadable") .fails() .stderr_is("tail: cannot open 'unreadable' for reading: Permission denied\n") .no_stdout() .code_is(1); } // TODO: Add similar test for windows #[test] #[cfg(unix)] fn test_permission_denied_multiple() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.touch("file1"); at.touch("file2"); use std::os::unix::fs::PermissionsExt; at.make_file("unreadable") .set_permissions(PermissionsExt::from_mode(0o000)) .unwrap(); ts.ucmd() .args(&["file1", "unreadable", "file2"]) .fails() .stderr_is("tail: cannot open 'unreadable' for reading: Permission denied\n") .stdout_is("==> file1 <==\n\n==> file2 <==\n") .code_is(1); } #[test] fn test_follow_redirect_stdin_name_retry() { // $ touch f && tail -F - < f // tail: cannot follow '-' by name // NOTE: Not sure why GNU's tail doesn't just follow `f` in this case. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.touch("f"); let mut args = vec!["-F", "-"]; for _ in 0..2 { ts.ucmd() .set_stdin(File::open(at.plus("f")).unwrap()) .args(&args) .fails() .no_stdout() .stderr_is("tail: cannot follow '-' by name\n") .code_is(1); args.pop(); } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_stdin_redirect_dir() { // $ mkdir dir // $ tail < dir, $ tail - < dir // tail: error reading 'standard input': Is a directory let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("dir"); ts.ucmd() .set_stdin(File::open(at.plus("dir")).unwrap()) .fails() .no_stdout() .stderr_is("tail: error reading 'standard input': Is a directory\n") .code_is(1); ts.ucmd() .set_stdin(File::open(at.plus("dir")).unwrap()) .arg("-") .fails() .no_stdout() .stderr_is("tail: error reading 'standard input': Is a directory\n") .code_is(1); } // On macOS path.is_dir() can be false for directories if it was a redirect, // e.g. `$ tail < DIR. The library feature to detect the // std::io::ErrorKind::IsADirectory isn't stable so we currently show the a wrong // error message. // FIXME: If `std::io::ErrorKind::IsADirectory` becomes stable or macos handles // redirected directories like linux show the correct message like in // `test_stdin_redirect_dir` #[test] #[cfg(target_vendor = "apple")] fn test_stdin_redirect_dir_when_target_os_is_macos() { // $ mkdir dir // $ tail < dir, $ tail - < dir // tail: error reading 'standard input': Is a directory let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("dir"); ts.ucmd() .set_stdin(File::open(at.plus("dir")).unwrap()) .fails() .no_stdout() .stderr_is("tail: cannot open 'standard input' for reading: No such file or directory\n") .code_is(1); ts.ucmd() .set_stdin(File::open(at.plus("dir")).unwrap()) .arg("-") .fails() .no_stdout() .stderr_is("tail: cannot open 'standard input' for reading: No such file or directory\n") .code_is(1); } #[test] fn test_follow_stdin_descriptor() { let ts = TestScenario::new(util_name!()); let mut args = vec!["-f", "-"]; for _ in 0..2 { let mut p = ts .ucmd() .set_stdin(Stdio::piped()) .args(&args) .run_no_wait(); p.make_assertion_with_delay(500).is_alive(); p.kill() .make_assertion() .with_all_output() .no_stderr() .no_stdout(); args.pop(); } } #[test] fn test_follow_stdin_name_retry() { // $ tail -F - // tail: cannot follow '-' by name let mut args = vec!["-F", "-"]; for _ in 0..2 { new_ucmd!() .args(&args) .run() .no_stdout() .stderr_is("tail: cannot follow '-' by name\n") .code_is(1); args.pop(); } } #[test] fn test_follow_bad_fd() { // Provoke a "bad file descriptor" error by closing the fd // inspired by: "gnu/tests/tail-2/follow-stdin.sh" // `$ tail -f <&-` OR `$ tail -f - <&-` // tail: cannot fstat 'standard input': Bad file descriptor // tail: error reading 'standard input': Bad file descriptor // tail: no files remaining // tail: -: Bad file descriptor // // $ `tail <&-` // tail: cannot fstat 'standard input': Bad file descriptor // tail: -: Bad file descriptor // WONT-FIX: // see also: https://github.com/uutils/coreutils/issues/2873 } #[test] fn test_single_default() { new_ucmd!() .arg(FOOBAR_TXT) .run() .stdout_is_fixture("foobar_single_default.expected"); } #[test] fn test_n_greater_than_number_of_lines() { new_ucmd!() .arg("-n") .arg("99999999") .arg(FOOBAR_TXT) .run() .stdout_is_fixture(FOOBAR_TXT); } #[test] fn test_null_default() { new_ucmd!() .arg("-z") .arg(FOOBAR_WITH_NULL_TXT) .run() .stdout_is_fixture("foobar_with_null_default.expected"); } #[test] #[cfg(not(target_os = "windows"))] // FIXME: test times out fn test_follow_single() { let (at, mut ucmd) = at_and_ucmd!(); let mut child = ucmd.arg("-f").arg(FOOBAR_TXT).run_no_wait(); let expected_fixture = "foobar_single_default.expected"; child .make_assertion_with_delay(200) .is_alive() .with_current_output() .stdout_only_fixture(expected_fixture); // We write in a temporary copy of foobar.txt let expected = "line1\nline2\n"; at.append(FOOBAR_TXT, expected); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected); } /// Test for following when bytes are written that are not valid UTF-8. #[test] #[cfg(not(target_os = "windows"))] // FIXME: test times out fn test_follow_non_utf8_bytes() { // Tail the test file and start following it. let (at, mut ucmd) = at_and_ucmd!(); let mut child = ucmd.arg("-f").arg(FOOBAR_TXT).run_no_wait(); child .make_assertion_with_delay(500) .is_alive() .with_current_output() .stdout_only_fixture("foobar_single_default.expected"); // Now append some bytes that are not valid UTF-8. // // The binary integer "10000000" is *not* a valid UTF-8 encoding // of a character: https://en.wikipedia.org/wiki/UTF-8#Encoding // // We also write the newline character because our implementation // of `tail` is attempting to read a line of input, so the // presence of a newline character will force the `follow()` // function to conclude reading input bytes and start writing them // to output. The newline character is not fundamental to this // test, it is just a requirement of the current implementation. let expected = [0b10000000, b'\n']; at.append_bytes(FOOBAR_TXT, &expected); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only_bytes(expected); child.make_assertion().is_alive(); child.kill(); } #[test] #[cfg(not(target_os = "windows"))] // FIXME: test times out fn test_follow_multiple() { let (at, mut ucmd) = at_and_ucmd!(); let mut child = ucmd .arg("-f") .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .run_no_wait(); child .make_assertion_with_delay(500) .is_alive() .with_current_output() .stdout_only_fixture("foobar_follow_multiple.expected"); let first_append = "trois\n"; at.append(FOOBAR_2_TXT, first_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only(first_append); let second_append = "twenty\nthirty\n"; at.append(FOOBAR_TXT, second_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only_fixture("foobar_follow_multiple_appended.expected"); child.make_assertion().is_alive(); child.kill(); } #[test] #[cfg(not(target_os = "windows"))] // FIXME: test times out fn test_follow_name_multiple() { let (at, mut ucmd) = at_and_ucmd!(); let mut child = ucmd .arg("--follow=name") .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .run_no_wait(); child .make_assertion_with_delay(500) .is_alive() .with_current_output() .stdout_only_fixture("foobar_follow_multiple.expected"); let first_append = "trois\n"; at.append(FOOBAR_2_TXT, first_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only(first_append); let second_append = "twenty\nthirty\n"; at.append(FOOBAR_TXT, second_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only_fixture("foobar_follow_multiple_appended.expected"); child.make_assertion().is_alive(); child.kill(); } #[test] fn test_follow_multiple_untailable() { // $ tail -f DIR1 DIR2 // ==> DIR1 <== // tail: error reading 'DIR1': Is a directory // tail: DIR1: cannot follow end of this type of file; giving up on this name // // ==> DIR2 <== // tail: error reading 'DIR2': Is a directory // tail: DIR2: cannot follow end of this type of file; giving up on this name // tail: no files remaining let expected_stdout = "==> DIR1 <==\n\n==> DIR2 <==\n"; let expected_stderr = "tail: error reading 'DIR1': Is a directory\n\ tail: DIR1: cannot follow end of this type of file; giving up on this name\n\ tail: error reading 'DIR2': Is a directory\n\ tail: DIR2: cannot follow end of this type of file; giving up on this name\n\ tail: no files remaining\n"; let (at, mut ucmd) = at_and_ucmd!(); at.mkdir("DIR1"); at.mkdir("DIR2"); ucmd.arg("-f") .arg("DIR1") .arg("DIR2") .fails() .stderr_is(expected_stderr) .stdout_is(expected_stdout) .code_is(1); } #[test] fn test_follow_stdin_pipe() { new_ucmd!() .arg("-f") .pipe_in_fixture(FOOBAR_TXT) .run() .stdout_is_fixture("follow_stdin.expected") .no_stderr(); } #[test] #[cfg(not(target_os = "windows"))] // FIXME: for currently not working platforms fn test_follow_invalid_pid() { new_ucmd!() .args(&["-f", "--pid=-1234"]) .fails() .no_stdout() .stderr_is("tail: invalid PID: '-1234'\n"); new_ucmd!() .args(&["-f", "--pid=abc"]) .fails() .no_stdout() .stderr_is("tail: invalid PID: 'abc': invalid digit found in string\n"); let max_pid = (i32::MAX as i64 + 1).to_string(); new_ucmd!() .args(&["-f", "--pid", &max_pid]) .fails() .no_stdout() .stderr_is(format!( "tail: invalid PID: '{max_pid}': number too large to fit in target type\n" )); } // FixME: test PASSES for usual windows builds, but fails for coverage testing builds (likely related to the specific RUSTFLAGS '-Zpanic_abort_tests -Cpanic=abort') This test also breaks tty settings under bash requiring a 'stty sane' or reset. // spell-checker:disable-line // FIXME: FreeBSD: See issue https://github.com/uutils/coreutils/issues/4306 // Fails intermittently in the CI, but couldn't reproduce the failure locally. #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_with_pid() { use std::process::Command; let (at, mut ucmd) = at_and_ucmd!(); #[cfg(unix)] let dummy_cmd = "sh"; #[cfg(windows)] let dummy_cmd = "cmd"; let mut dummy = Command::new(dummy_cmd).spawn().unwrap(); let pid = dummy.id(); let mut child = ucmd .arg("-f") .arg(format!("--pid={pid}")) .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .run_no_wait(); child .make_assertion_with_delay(500) .is_alive() .with_current_output() .stdout_only_fixture("foobar_follow_multiple.expected"); let first_append = "trois\n"; at.append(FOOBAR_2_TXT, first_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .with_current_output() .stdout_only(first_append); let second_append = "twenty\nthirty\n"; at.append(FOOBAR_TXT, second_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .is_alive() .with_current_output() .stdout_only_fixture("foobar_follow_multiple_appended.expected"); // kill the dummy process and give tail time to notice this dummy.kill().unwrap(); let _ = dummy.wait(); child.delay(DEFAULT_SLEEP_INTERVAL_MILLIS); let third_append = "should\nbe\nignored\n"; at.append(FOOBAR_TXT, third_append); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .is_not_alive() .with_current_output() .no_stderr() .no_stdout() .success(); } #[test] fn test_single_big_args() { const FILE: &str = "single_big_args.txt"; const EXPECTED_FILE: &str = "single_big_args_expected.txt"; const LINES: usize = 1_000_000; const N_ARG: usize = 100_000; let (at, mut ucmd) = at_and_ucmd!(); let mut big_input = at.make_file(FILE); for i in 0..LINES { writeln!(big_input, "Line {i}").expect("Could not write to FILE"); } big_input.flush().expect("Could not flush FILE"); let mut big_expected = at.make_file(EXPECTED_FILE); for i in (LINES - N_ARG)..LINES { writeln!(big_expected, "Line {i}").expect("Could not write to EXPECTED_FILE"); } big_expected.flush().expect("Could not flush EXPECTED_FILE"); ucmd.arg(FILE).arg("-n").arg(format!("{N_ARG}")).run(); // .stdout_is(at.read(EXPECTED_FILE)); } #[test] fn test_bytes_single() { new_ucmd!() .arg("-c") .arg("10") .arg(FOOBAR_TXT) .run() .stdout_is_fixture("foobar_bytes_single.expected"); } #[test] fn test_bytes_stdin() { new_ucmd!() .pipe_in_fixture(FOOBAR_TXT) .arg("-c") .arg("13") .run() .stdout_is_fixture("foobar_bytes_stdin.expected") .no_stderr(); } #[test] fn test_bytes_big() { const FILE: &str = "test_bytes_big.txt"; const EXPECTED_FILE: &str = "test_bytes_big_expected.txt"; const BYTES: usize = 1_000_000; const N_ARG: usize = 100_000; let (at, mut ucmd) = at_and_ucmd!(); let mut big_input = at.make_file(FILE); for i in 0..BYTES { let digit = from_digit((i % 10) as u32, 10).unwrap(); write!(big_input, "{digit}").expect("Could not write to FILE"); } big_input.flush().expect("Could not flush FILE"); let mut big_expected = at.make_file(EXPECTED_FILE); for i in (BYTES - N_ARG)..BYTES { let digit = from_digit((i % 10) as u32, 10).unwrap(); write!(big_expected, "{digit}").expect("Could not write to EXPECTED_FILE"); } big_expected.flush().expect("Could not flush EXPECTED_FILE"); let result = ucmd .arg(FILE) .arg("-c") .arg(format!("{N_ARG}")) .succeeds() .stdout_move_str(); let expected = at.read(EXPECTED_FILE); assert_eq!(result.len(), expected.len()); for (actual_char, expected_char) in result.chars().zip(expected.chars()) { assert_eq!(actual_char, expected_char); } } #[test] fn test_lines_with_size_suffix() { const FILE: &str = "test_lines_with_size_suffix.txt"; const EXPECTED_FILE: &str = "test_lines_with_size_suffix_expected.txt"; const LINES: usize = 3_000; const N_ARG: usize = 2 * 1024; let (at, mut ucmd) = at_and_ucmd!(); let mut big_input = at.make_file(FILE); for i in 0..LINES { writeln!(big_input, "Line {i}").expect("Could not write to FILE"); } big_input.flush().expect("Could not flush FILE"); let mut big_expected = at.make_file(EXPECTED_FILE); for i in (LINES - N_ARG)..LINES { writeln!(big_expected, "Line {i}").expect("Could not write to EXPECTED_FILE"); } big_expected.flush().expect("Could not flush EXPECTED_FILE"); ucmd.arg(FILE) .arg("-n") .arg("2K") .run() .stdout_is_fixture(EXPECTED_FILE); } #[test] fn test_multiple_input_files() { new_ucmd!() .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .run() .no_stderr() .stdout_is_fixture("foobar_follow_multiple.expected"); } #[test] fn test_multiple_input_files_missing() { new_ucmd!() .arg(FOOBAR_TXT) .arg("missing1") .arg(FOOBAR_2_TXT) .arg("missing2") .run() .stdout_is_fixture("foobar_follow_multiple.expected") .stderr_is( "tail: cannot open 'missing1' for reading: No such file or directory\n\ tail: cannot open 'missing2' for reading: No such file or directory\n", ) .code_is(1); } #[test] fn test_follow_missing() { // Ensure that --follow=name does not imply --retry. // Ensure that --follow={descriptor,name} (without --retry) does *not wait* for the // file to appear. for follow_mode in &["--follow=descriptor", "--follow=name"] { new_ucmd!() .arg(follow_mode) .arg("missing") .run() .no_stdout() .stderr_is( "tail: cannot open 'missing' for reading: No such file or directory\n\ tail: no files remaining\n", ) .code_is(1); } } #[test] fn test_follow_name_stdin() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.touch("FILE1"); at.touch("FILE2"); ts.ucmd() .arg("--follow=name") .arg("-") .run() .stderr_is("tail: cannot follow '-' by name\n") .code_is(1); ts.ucmd() .arg("--follow=name") .arg("FILE1") .arg("-") .arg("FILE2") .run() .stderr_is("tail: cannot follow '-' by name\n") .code_is(1); } #[test] fn test_multiple_input_files_with_suppressed_headers() { new_ucmd!() .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .arg("-q") .run() .stdout_is_fixture("foobar_multiple_quiet.expected"); } #[test] fn test_multiple_input_quiet_flag_overrides_verbose_flag_for_suppressing_headers() { new_ucmd!() .arg(FOOBAR_TXT) .arg(FOOBAR_2_TXT) .arg("-v") .arg("-q") .run() .stdout_is_fixture("foobar_multiple_quiet.expected"); } #[test] fn test_dir() { let (at, mut ucmd) = at_and_ucmd!(); at.mkdir("DIR"); ucmd.arg("DIR") .run() .stderr_is("tail: error reading 'DIR': Is a directory\n") .code_is(1); } #[test] fn test_dir_follow() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("DIR"); for mode in &["--follow=descriptor", "--follow=name"] { ts.ucmd() .arg(mode) .arg("DIR") .run() .no_stdout() .stderr_is( "tail: error reading 'DIR': Is a directory\n\ tail: DIR: cannot follow end of this type of file; giving up on this name\n\ tail: no files remaining\n", ) .code_is(1); } } #[test] fn test_dir_follow_retry() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("DIR"); ts.ucmd() .arg("--follow=descriptor") .arg("--retry") .arg("DIR") .run() .stderr_is( "tail: warning: --retry only effective for the initial open\n\ tail: error reading 'DIR': Is a directory\n\ tail: DIR: cannot follow end of this type of file\n\ tail: no files remaining\n", ) .code_is(1); } #[test] fn test_negative_indexing() { let positive_lines_index = new_ucmd!().arg("-n").arg("5").arg(FOOBAR_TXT).run(); let negative_lines_index = new_ucmd!().arg("-n").arg("-5").arg(FOOBAR_TXT).run(); let positive_bytes_index = new_ucmd!().arg("-c").arg("20").arg(FOOBAR_TXT).run(); let negative_bytes_index = new_ucmd!().arg("-c").arg("-20").arg(FOOBAR_TXT).run(); assert_eq!(positive_lines_index.stdout(), negative_lines_index.stdout()); assert_eq!(positive_bytes_index.stdout(), negative_bytes_index.stdout()); } #[test] fn test_sleep_interval() { new_ucmd!().arg("-s").arg("10").arg(FOOBAR_TXT).succeeds(); new_ucmd!().arg("-s").arg(".1").arg(FOOBAR_TXT).succeeds(); new_ucmd!().arg("-s.1").arg(FOOBAR_TXT).succeeds(); new_ucmd!().arg("-s").arg("-1").arg(FOOBAR_TXT).fails(); new_ucmd!() .arg("-s") .arg("1..1") .arg(FOOBAR_TXT) .fails() .stderr_contains("invalid number of seconds: '1..1'") .code_is(1); } /// Test for reading all but the first NUM bytes: `tail -c +3`. #[test] fn test_positive_bytes() { new_ucmd!() .args(&["-c", "+3"]) .pipe_in("abcde") .succeeds() .stdout_is("cde"); } /// Test for reading all bytes, specified by `tail -c +0`. #[test] fn test_positive_zero_bytes() { let ts = TestScenario::new(util_name!()); ts.ucmd() .args(&["-c", "+0"]) .pipe_in("abcde") .succeeds() .stdout_is("abcde"); ts.ucmd() .args(&["-c", "0"]) .pipe_in("abcde") .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); } /// Test for reading all but the first NUM lines: `tail -n +3`. #[test] fn test_positive_lines() { new_ucmd!() .args(&["-n", "+3"]) .pipe_in("a\nb\nc\nd\ne\n") .succeeds() .stdout_is("c\nd\ne\n"); } /// Test for reading all but the first NUM lines of a file: `tail -n +3 infile`. #[test] fn test_positive_lines_file() { new_ucmd!() .args(&["-n", "+7", "foobar.txt"]) .succeeds() .stdout_is( "siette ocho nueve diez once ", ); } /// Test for reading all but the first NUM bytes of a file: `tail -c +3 infile`. #[test] fn test_positive_bytes_file() { new_ucmd!() .args(&["-c", "+42", "foobar.txt"]) .succeeds() .stdout_is( "ho nueve diez once ", ); } /// Test for reading all but the first NUM lines: `tail -3`. #[test] fn test_obsolete_syntax_positive_lines() { new_ucmd!() .args(&["-3"]) .pipe_in("a\nb\nc\nd\ne\n") .succeeds() .stdout_is("c\nd\ne\n"); } /// Test for reading all but the first NUM lines: `tail -n -10`. #[test] fn test_small_file() { new_ucmd!() .args(&["-n -10"]) .pipe_in("a\nb\nc\nd\ne\n") .succeeds() .stdout_is("a\nb\nc\nd\ne\n"); } /// Test for reading all but the first NUM lines: `tail -10`. #[test] fn test_obsolete_syntax_small_file() { new_ucmd!() .args(&["-10"]) .pipe_in("a\nb\nc\nd\ne\n") .succeeds() .stdout_is("a\nb\nc\nd\ne\n"); } /// Test for reading all lines, specified by `tail -n +0`. #[test] fn test_positive_zero_lines() { let ts = TestScenario::new(util_name!()); ts.ucmd() .args(&["-n", "+0"]) .pipe_in("a\nb\nc\nd\ne\n") .succeeds() .stdout_is("a\nb\nc\nd\ne\n"); ts.ucmd() .args(&["-n", "0"]) .pipe_in("a\nb\nc\nd\ne\n") .ignore_stdin_write_error() .succeeds() .no_stderr() .no_stdout(); } #[test] fn test_invalid_num() { new_ucmd!() .args(&["-c", "1024R", "emptyfile.txt"]) .fails() .stderr_str() .starts_with("tail: invalid number of bytes: '1024R'"); new_ucmd!() .args(&["-n", "1024R", "emptyfile.txt"]) .fails() .stderr_str() .starts_with("tail: invalid number of lines: '1024R'"); #[cfg(not(target_pointer_width = "128"))] new_ucmd!() .args(&["-c", "1Y", "emptyfile.txt"]) .fails() .stderr_str() .starts_with("tail: invalid number of bytes: '1Y': Value too large for defined data type"); #[cfg(not(target_pointer_width = "128"))] new_ucmd!() .args(&["-n", "1Y", "emptyfile.txt"]) .fails() .stderr_str() .starts_with("tail: invalid number of lines: '1Y': Value too large for defined data type"); new_ucmd!() .args(&["-c", "-³"]) .fails() .stderr_str() .starts_with("tail: invalid number of bytes: '³'"); } #[test] fn test_num_with_undocumented_sign_bytes() { // tail: '-' is not documented (8.32 man pages) // head: '+' is not documented (8.32 man pages) const ALPHABET: &str = "abcdefghijklmnopqrstuvwxyz"; new_ucmd!() .args(&["-c", "5"]) .pipe_in(ALPHABET) .succeeds() .stdout_is("vwxyz"); new_ucmd!() .args(&["-c", "-5"]) .pipe_in(ALPHABET) .succeeds() .stdout_is("vwxyz"); new_ucmd!() .args(&["-c", "+5"]) .pipe_in(ALPHABET) .succeeds() .stdout_is("efghijklmnopqrstuvwxyz"); } #[test] #[cfg(unix)] fn test_bytes_for_funny_unix_files() { // inspired by: gnu/tests/tail-2/tail-c.sh let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; for file in ["/proc/version", "/sys/kernel/profiling"] { if !at.file_exists(file) { continue; } let args = ["--bytes", "1", file]; let result = ts.ucmd().args(&args).run(); let exp_result = unwrap_or_return!(expected_result(&ts, &args)); result .stdout_is(exp_result.stdout_str()) .stderr_is(exp_result.stderr_str()) .code_is(exp_result.code()); } } #[test] fn test_retry1() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure --retry without --follow results in a warning. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file_name = "FILE"; at.touch(file_name); let result = ts.ucmd().arg(file_name).arg("--retry").run(); result .stderr_is("tail: warning: --retry ignored; --retry is useful only when following\n") .code_is(0); } #[test] fn test_retry2() { // inspired by: gnu/tests/tail-2/retry.sh // The same as test_retry2 with a missing file: expect error message and exit 1. let ts = TestScenario::new(util_name!()); let missing = "missing"; let result = ts.ucmd().arg(missing).arg("--retry").run(); result .stderr_is( "tail: warning: --retry ignored; --retry is useful only when following\n\ tail: cannot open 'missing' for reading: No such file or directory\n", ) .code_is(1); } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry3() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure that `tail --retry --follow=name` waits for the file to appear. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let missing = "missing"; let expected_stderr = "tail: cannot open 'missing' for reading: No such file or directory\n\ tail: 'missing' has appeared; following new file\n"; let expected_stdout = "X\n"; let mut delay = 1500; let mut args = vec!["--follow=name", "--retry", missing, "--use-polling"]; for _ in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.touch(missing); p.delay(delay); at.truncate(missing, "X\n"); p.delay(delay); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); at.remove(missing); args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry4() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure that `tail --retry --follow=descriptor` waits for the file to appear. // Ensure truncation is detected. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let missing = "missing"; let expected_stderr = "tail: warning: --retry only effective for the initial open\n\ tail: cannot open 'missing' for reading: No such file or directory\n\ tail: 'missing' has appeared; following new file\n\ tail: missing: file truncated\n"; let expected_stdout = "X1\nX\n"; let mut args = vec![ "-s.1", "--max-unchanged-stats=1", "--follow=descriptor", "--retry", missing, "---disable-inotify", ]; let mut delay = 1500; for _ in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.touch(missing); p.delay(delay); at.truncate(missing, "X1\n"); p.delay(delay); at.truncate(missing, "X\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); at.remove(missing); args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry5() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure that `tail --follow=descriptor --retry` exits when the file appears untailable. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let missing = "missing"; let expected_stderr = "tail: warning: --retry only effective for the initial open\n\ tail: cannot open 'missing' for reading: No such file or directory\n\ tail: 'missing' has been replaced with an untailable file; giving up on this name\n\ tail: no files remaining\n"; let mut delay = 1500; let mut args = vec!["--follow=descriptor", "--retry", missing, "--use-polling"]; for _ in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.mkdir(missing); p.delay(delay); p.make_assertion() .is_not_alive() .with_all_output() .stderr_only(expected_stderr) .failure(); at.rmdir(missing); args.pop(); delay /= 3; } } // intermittent failures on android with diff // Diff < left / right > : // ==> existing <== // >X #[test] #[cfg(all(not(target_os = "windows"), not(target_os = "android")))] // FIXME: for currently not working platforms fn test_retry6() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure that --follow=descriptor (without --retry) does *not* try // to open a file after an initial fail, even when there are other tailable files. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let missing = "missing"; let existing = "existing"; at.touch(existing); let expected_stderr = "tail: cannot open 'missing' for reading: No such file or directory\n"; let expected_stdout = "==> existing <==\nX\n"; let mut p = ts .ucmd() .arg("--follow=descriptor") .arg("missing") .arg("existing") .run_no_wait(); let delay = 1000; p.make_assertion_with_delay(delay).is_alive(); at.truncate(missing, "Y\n"); p.delay(delay); at.truncate(existing, "X\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_is(expected_stdout) .stderr_is(expected_stderr); } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry7() { // inspired by: gnu/tests/tail-2/retry.sh // Ensure that `tail -F` retries when the file is initially untailable. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let untailable = "untailable"; let expected_stderr = "tail: error reading 'untailable': Is a directory\n\ tail: untailable: cannot follow end of this type of file\n\ tail: 'untailable' has become accessible\n\ tail: 'untailable' has become inaccessible: No such file or directory\n\ tail: 'untailable' has been replaced with an untailable file\n\ tail: 'untailable' has become accessible\n"; let expected_stdout = "foo\nbar\n"; let mut args = vec![ "-s.1", "--max-unchanged-stats=1", "-F", untailable, "--use-polling", ]; let mut delay = 1500; for _ in 0..2 { at.mkdir(untailable); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); // tail: 'untailable' has become accessible // or (The first is the common case, "has appeared" arises with slow rmdir): // tail: 'untailable' has appeared; following new file at.rmdir(untailable); at.truncate(untailable, "foo\n"); p.delay(delay); // NOTE: GNU's `tail` only shows "become inaccessible" // if there's a delay between rm and mkdir. // tail: 'untailable' has become inaccessible: No such file or directory at.remove(untailable); p.delay(delay); // tail: 'untailable' has been replaced with an untailable file\n"; at.mkdir(untailable); p.delay(delay); // full circle, back to the beginning at.rmdir(untailable); at.truncate(untailable, "bar\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); args.pop(); at.remove(untailable); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry8() { // Ensure that inotify will switch to polling mode if directory // of the watched file was initially missing and later created. // This is similar to test_retry9, but without: // tail: directory containing watched file was removed\n\ // tail: inotify cannot be used, reverting to polling\n\ let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let watched_file = Path::new("watched_file"); let parent_dir = Path::new("parent_dir"); let user_path = parent_dir.join(watched_file); let parent_dir = parent_dir.to_str().unwrap(); let user_path = user_path.to_str().unwrap(); let expected_stderr = "\ tail: cannot open 'parent_dir/watched_file' for reading: No such file or directory\n\ tail: 'parent_dir/watched_file' has appeared; following new file\n\ tail: 'parent_dir/watched_file' has become inaccessible: No such file or directory\n\ tail: 'parent_dir/watched_file' has appeared; following new file\n"; let expected_stdout = "foo\nbar\n"; let delay = 1000; let mut p = ts .ucmd() .arg("-F") .arg("-s.1") .arg("--max-unchanged-stats=1") .arg(user_path) .run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); // 'parent_dir/watched_file' is orphan // tail: cannot open 'parent_dir/watched_file' for reading: No such file or directory\n\ // tail: 'parent_dir/watched_file' has appeared; following new file\n\ at.mkdir(parent_dir); // not an orphan anymore at.append(user_path, "foo\n"); p.delay(delay); // tail: 'parent_dir/watched_file' has become inaccessible: No such file or directory\n\ at.remove(user_path); at.rmdir(parent_dir); // 'parent_dir/watched_file' is orphan *again* p.delay(delay); // Since 'parent_dir/watched_file' is orphan, this needs to be picked up by polling // tail: 'parent_dir/watched_file' has appeared; following new file\n"; at.mkdir(parent_dir); // not an orphan anymore at.append(user_path, "bar\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_retry9() { // inspired by: gnu/tests/tail-2/inotify-dir-recreate.sh // Ensure that inotify will switch to polling mode if directory // of the watched file was removed and recreated. use text::BACKEND; let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let watched_file = Path::new("watched_file"); let parent_dir = Path::new("parent_dir"); let user_path = parent_dir.join(watched_file); let parent_dir = parent_dir.to_str().unwrap(); let user_path = user_path.to_str().unwrap(); let expected_stderr = format!( "\ tail: 'parent_dir/watched_file' has become inaccessible: No such file or directory\n\ tail: directory containing watched file was removed\n\ tail: {BACKEND} cannot be used, reverting to polling\n\ tail: 'parent_dir/watched_file' has appeared; following new file\n\ tail: 'parent_dir/watched_file' has become inaccessible: No such file or directory\n\ tail: 'parent_dir/watched_file' has appeared; following new file\n\ tail: 'parent_dir/watched_file' has become inaccessible: No such file or directory\n\ tail: 'parent_dir/watched_file' has appeared; following new file\n" ); let expected_stdout = "foo\nbar\nfoo\nbar\n"; let delay = 1000; at.mkdir(parent_dir); at.truncate(user_path, "foo\n"); let mut p = ts .ucmd() .arg("-F") .arg("-s.1") .arg("--max-unchanged-stats=1") .arg(user_path) .run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.remove(user_path); at.rmdir(parent_dir); p.delay(delay); at.mkdir(parent_dir); at.truncate(user_path, "bar\n"); p.delay(delay); at.remove(user_path); at.rmdir(parent_dir); p.delay(delay); at.mkdir(parent_dir); at.truncate(user_path, "foo\n"); p.delay(delay); at.remove(user_path); at.rmdir(parent_dir); p.delay(delay); at.mkdir(parent_dir); at.truncate(user_path, "bar\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_descriptor_vs_rename1() { // inspired by: gnu/tests/tail-2/descriptor-vs-rename.sh // $ ((rm -f A && touch A && sleep 1 && echo -n "A\n" >> A && sleep 1 && \ // mv A B && sleep 1 && echo -n "B\n" >> B &)>/dev/null 2>&1 &) ; \ // sleep 1 && target/debug/tail --follow=descriptor A ---disable-inotify // $ A // $ B let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file_a = "FILE_A"; let file_b = "FILE_B"; let file_c = "FILE_C"; let mut args = vec![ "--follow=descriptor", "-s.1", "--max-unchanged-stats=1", file_a, "---disable-inotify", ]; let mut delay = 1500; for _ in 0..2 { at.touch(file_a); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.append(file_a, "A\n"); p.delay(delay); at.rename(file_a, file_b); p.delay(delay); at.append(file_b, "B\n"); p.delay(delay); at.rename(file_b, file_c); p.delay(delay); at.append(file_c, "C\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_only("A\nB\nC\n"); args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_descriptor_vs_rename2() { // Ensure the headers are correct for --verbose. // NOTE: GNU's tail does not update the header from FILE_A to FILE_C after `mv FILE_A FILE_C` let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file_a = "FILE_A"; let file_b = "FILE_B"; let file_c = "FILE_C"; let mut args = vec![ "--follow=descriptor", "-s.1", "--max-unchanged-stats=1", file_a, file_b, "--verbose", "---disable-inotify", ]; let mut delay = 1500; for _ in 0..2 { at.touch(file_a); at.touch(file_b); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.rename(file_a, file_c); p.delay(delay); at.append(file_c, "X\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_only("==> FILE_A <==\n\n==> FILE_B <==\n\n==> FILE_A <==\nX\n"); args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_retry_headers() { // inspired by: "gnu/tests/tail-2/F-headers.sh" // Ensure tail -F distinguishes output with the // correct headers for created/renamed files /* $ tail --follow=descriptor -s.1 --max-unchanged-stats=1 -F a b tail: cannot open 'a' for reading: No such file or directory tail: cannot open 'b' for reading: No such file or directory tail: 'a' has appeared; following new file ==> a <== x tail: 'b' has appeared; following new file ==> b <== y */ let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file_a = "a"; let file_b = "b"; let mut args = vec![ "-F", "-s.1", "--max-unchanged-stats=1", file_a, file_b, "---disable-inotify", ]; let mut delay = 1500; for _ in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.truncate(file_a, "x\n"); p.delay(delay); at.truncate(file_b, "y\n"); p.delay(delay); let expected_stderr = "tail: cannot open 'a' for reading: No such file or directory\n\ tail: cannot open 'b' for reading: No such file or directory\n\ tail: 'a' has appeared; following new file\n\ tail: 'b' has appeared; following new file\n"; let expected_stdout = "\n==> a <==\nx\n\n==> b <==\ny\n"; p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_is(expected_stdout) .stderr_is(expected_stderr); at.remove(file_a); at.remove(file_b); args.pop(); delay /= 3; } } #[test] #[cfg(all(not(target_os = "windows"), not(target_os = "android")))] // FIXME: for currently not working platforms fn test_follow_name_remove() { // This test triggers a remove event while `tail --follow=name file` is running. // ((sleep 2 && rm file &)>/dev/null 2>&1 &) ; tail --follow=name file let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = FOLLOW_NAME_TXT; let source_copy = "source_copy"; at.copy(source, source_copy); let expected_stdout = at.read(FOLLOW_NAME_SHORT_EXP); let expected_stderr = [ format!( "{}: {}: No such file or directory\n{0}: no files remaining\n", ts.util_name, source_copy ), format!( "{}: {}: No such file or directory\n", ts.util_name, source_copy ), ]; let mut args = vec!["--follow=name", source_copy, "--use-polling"]; let mut delay = 1500; #[allow(clippy::needless_range_loop)] for i in 0..2 { at.copy(source, source_copy); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.remove(source_copy); p.delay(delay); if i == 0 { p.make_assertion() .is_not_alive() .with_all_output() .stdout_is(&expected_stdout) .stderr_is(&expected_stderr[i]) .failure(); } else { p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_is(&expected_stdout) .stderr_is(&expected_stderr[i]); } args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_truncate1() { // This test triggers a truncate event while `tail --follow=name file` is running. // $ cp file backup && head file > file && sleep 1 && cp backup file let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = FOLLOW_NAME_TXT; let backup = "backup"; let expected_stdout = at.read(FOLLOW_NAME_EXP); let expected_stderr = format!("{}: {}: file truncated\n", ts.util_name, source); let args = ["--follow=name", source]; let mut p = ts.ucmd().args(&args).run_no_wait(); let delay = 1000; p.make_assertion().is_alive(); at.copy(source, backup); p.delay(delay); at.touch(source); // trigger truncate p.delay(delay); at.copy(backup, source); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); } #[test] #[cfg(all( not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_truncate2() { // This test triggers a truncate event while `tail --follow=name file` is running. // $ ((sleep 1 && echo -n "x\nx\nx\n" >> file && sleep 1 && \ // echo -n "x\n" > file &)>/dev/null 2>&1 &) ; tail --follow=name file let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = "file"; at.touch(source); let expected_stdout = "x\nx\nx\nx\n"; let expected_stderr = format!("{}: {}: file truncated\n", ts.util_name, source); let args = ["--follow=name", source]; let mut p = ts.ucmd().args(&args).run_no_wait(); let delay = 1000; p.make_assertion().is_alive(); at.append(source, "x\n"); p.delay(delay); at.append(source, "x\n"); p.delay(delay); at.append(source, "x\n"); p.delay(delay); at.truncate(source, "x\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); } #[test] #[cfg(not(target_os = "windows"))] // FIXME: for currently not working platforms fn test_follow_name_truncate3() { // Opening an empty file in truncate mode should not trigger a truncate event while // `tail --follow=name file` is running. // $ rm -f file && touch file // $ ((sleep 1 && echo -n "x\n" > file &)>/dev/null 2>&1 &) ; tail --follow=name file let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = "file"; at.touch(source); let expected_stdout = "x\n"; let args = ["--follow=name", source]; let mut p = ts.ucmd().args(&args).run_no_wait(); let delay = 1000; p.make_assertion_with_delay(delay).is_alive(); at.truncate(source, "x\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_only(expected_stdout); } #[test] #[cfg(all(not(target_vendor = "apple"), not(target_os = "windows")))] // FIXME: for currently not working platforms fn test_follow_name_truncate4() { // Truncating a file with the same content it already has should not trigger a truncate event let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let mut args = vec!["-s.1", "--max-unchanged-stats=1", "-F", "file"]; let mut delay = 500; for i in 0..2 { at.append("file", "foobar\n"); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.truncate("file", "foobar\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stdout_only("foobar\n"); at.remove("file"); if i == 0 { args.push("---disable-inotify"); } delay *= 3; } } #[test] #[cfg(not(target_os = "windows"))] // FIXME: for currently not working platforms fn test_follow_truncate_fast() { // inspired by: "gnu/tests/tail-2/truncate.sh" // Ensure all logs are output upon file truncation // This is similar to `test_follow_name_truncate1-3` but uses very short delays // to better mimic the tight timings used in the "truncate.sh" test. // This is here to test for "speed" only, all the logic is already covered by other tests. if is_ci() { println!("TEST SKIPPED (too fast for CI)"); return; } let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let mut args = vec!["-s.1", "--max-unchanged-stats=1", "f", "---disable-inotify"]; let follow = vec!["-f", "-F"]; let mut delay = 1000; for _ in 0..2 { for mode in &follow { args.push(mode); at.truncate("f", "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n"); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.truncate("f", "11\n12\n13\n14\n15\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is("tail: f: file truncated\n") .stdout_is("1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n"); args.pop(); } args.pop(); delay = 250; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move_create1() { // This test triggers a move/create event while `tail --follow=name file` is running. // ((sleep 2 && mv file backup && sleep 2 && cp backup file &)>/dev/null 2>&1 &) ; tail --follow=name file let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = FOLLOW_NAME_TXT; let backup = "backup"; #[cfg(target_os = "linux")] let expected_stdout = at.read(FOLLOW_NAME_EXP); #[cfg(target_os = "linux")] let expected_stderr = format!( "{}: {}: No such file or directory\n{0}: '{1}' has appeared; following new file\n", ts.util_name, source ); // NOTE: We are less strict if not on Linux (inotify backend). #[cfg(not(target_os = "linux"))] let expected_stdout = at.read(FOLLOW_NAME_SHORT_EXP); #[cfg(not(target_os = "linux"))] let expected_stderr = format!("{}: {}: No such file or directory\n", ts.util_name, source); let delay = 500; let args = ["--follow=name", source]; let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.rename(source, backup); p.delay(delay); at.copy(backup, source); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move_create2() { // inspired by: "gnu/tests/tail-2/inotify-hash-abuse.sh" // Exercise an abort-inducing flaw in inotify-enabled tail -F let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; for n in ["1", "2", "3", "4", "5", "6", "7", "8", "9"] { at.touch(n); } let mut args = vec![ "-s.1", "--max-unchanged-stats=1", "-q", "-F", "1", "2", "3", "4", "5", "6", "7", "8", "9", ]; let mut delay = 500; for i in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.truncate("9", "x\n"); p.delay(delay); at.rename("1", "f"); p.delay(delay); at.truncate("1", "a\n"); p.delay(delay); // NOTE: Because "gnu/tests/tail-2/inotify-hash-abuse.sh" 'forgets' to clear the files used // during the first loop iteration, we also don't clear them to get the same side-effects. // Side-effects are truncating a file with the same content, see: test_follow_name_truncate4 // at.remove("1"); // at.touch("1"); // at.remove("9"); // at.touch("9"); let expected_stdout = if args.len() == 14 { "a\nx\na\n" } else { "x\na\n" }; let expected_stderr = "tail: '1' has become inaccessible: No such file or directory\n\ tail: '1' has appeared; following new file\n"; p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); at.remove("f"); if i == 0 { args.push("---disable-inotify"); } delay *= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move1() { // This test triggers a move event while `tail --follow=name file` is running. // ((sleep 2 && mv file backup &)>/dev/null 2>&1 &) ; tail --follow=name file // NOTE: For `---disable-inotify` tail exits with "no file remaining", it stays open w/o it. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = FOLLOW_NAME_TXT; let backup = "backup"; let expected_stdout = at.read(FOLLOW_NAME_SHORT_EXP); let expected_stderr = [ format!("{}: {}: No such file or directory\n", ts.util_name, source), format!( "{}: {}: No such file or directory\n{0}: no files remaining\n", ts.util_name, source ), ]; let mut args = vec!["--follow=name", source]; let mut delay = 500; #[allow(clippy::needless_range_loop)] for i in 0..2 { let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.rename(source, backup); p.delay(delay); if i == 0 { p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(&expected_stderr[i]) .stdout_is(&expected_stdout); } else { p.make_assertion() .is_not_alive() .with_all_output() .stderr_is(&expected_stderr[i]) .stdout_is(&expected_stdout) .failure(); } at.rename(backup, source); args.push("--use-polling"); delay *= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move2() { // Like test_follow_name_move1, but move to a name that's already monitored. // $ echo file1_content > file1; echo file2_content > file2; \ // ((sleep 2 ; mv file1 file2 ; sleep 1 ; echo "more_file2_content" >> file2 ; sleep 1 ; \ // echo "more_file1_content" >> file1 &)>/dev/null 2>&1 &) ; \ // tail --follow=name file1 file2 // ==> file1 <== // file1_content // // ==> file2 <== // file2_content // tail: file1: No such file or directory // tail: 'file2' has been replaced; following new file // file1_content // more_file2_content // tail: 'file1' has appeared; following new file // // ==> file1 <== // more_file1_content let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file1 = "file1"; let file2 = "file2"; let expected_stdout = format!( "==> {file1} <==\n{file1}_content\n\n==> {file2} <==\n{file2}_content\n{file1}_content\n\ more_{file2}_content\n\n==> {file1} <==\nmore_{file1}_content\n" ); let mut expected_stderr = format!( "{0}: {1}: No such file or directory\n\ {0}: '{2}' has been replaced; following new file\n\ {0}: '{1}' has appeared; following new file\n", ts.util_name, file1, file2 ); let mut args = vec!["--follow=name", file1, file2]; let mut delay = 500; for i in 0..2 { at.truncate(file1, "file1_content\n"); at.truncate(file2, "file2_content\n"); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.rename(file1, file2); p.delay(delay); at.append(file2, "more_file2_content\n"); p.delay(delay); at.append(file1, "more_file1_content\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(&expected_stderr) .stdout_is(&expected_stdout); if i == 0 { args.push("--use-polling"); } delay *= 3; // NOTE: Switch the first and second line because the events come in this order from // `notify::PollWatcher`. However, for GNU's tail, the order between polling and not // polling does not change. expected_stderr = format!( "{0}: '{2}' has been replaced; following new file\n\ {0}: {1}: No such file or directory\n\ {0}: '{1}' has appeared; following new file\n", ts.util_name, file1, file2 ); } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move_retry1() { // Similar to test_follow_name_move1 but with `--retry` (`-F`) // This test triggers two move/rename events while `tail --follow=name --retry file` is running. let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let source = FOLLOW_NAME_TXT; let backup = "backup"; let expected_stderr = format!( "{0}: '{1}' has become inaccessible: No such file or directory\n\ {0}: '{1}' has appeared; following new file\n", ts.util_name, source ); let expected_stdout = "tailed\nnew content\n"; let mut args = vec!["--follow=name", "--retry", source, "--use-polling"]; let mut delay = 1500; for _ in 0..2 { at.touch(source); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.append(source, "tailed\n"); p.delay(delay); // with --follow=name, tail should stop monitoring the renamed file at.rename(source, backup); p.delay(delay); // overwrite backup while it's not monitored at.truncate(backup, "new content\n"); p.delay(delay); // move back, tail should pick this up and print new content at.rename(backup, source); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(&expected_stderr) .stdout_is(expected_stdout); at.remove(source); args.pop(); delay /= 3; } } #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "android"), not(target_os = "freebsd") ))] // FIXME: for currently not working platforms fn test_follow_name_move_retry2() { // inspired by: "gnu/tests/tail-2/F-vs-rename.sh" // Similar to test_follow_name_move2 (move to a name that's already monitored) // but with `--retry` (`-F`) /* $ touch a b $ ((sleep 1; echo x > a; mv a b; echo x2 > a; echo y >> b; echo z >> a &)>/dev/null 2>&1 &) ; tail -F a b ==> a <== ==> b <== ==> a <== x tail: 'a' has become inaccessible: No such file or directory tail: 'b' has been replaced; following new file ==> b <== x tail: 'a' has appeared; following new file ==> a <== x2 ==> b <== y ==> a <== z */ let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let file1 = "a"; let file2 = "b"; let expected_stdout = format!( "==> {file1} <==\n\n==> {file2} <==\n\n==> {file1} <==\nx\n\n==> {file2} <==\ \nx\n\n==> {file1} <==\nx2\n\n==> {file2} <==\ny\n\n==> {file1} <==\nz\n" ); let mut expected_stderr = format!( "{0}: '{1}' has become inaccessible: No such file or directory\n\ {0}: '{2}' has been replaced; following new file\n\ {0}: '{1}' has appeared; following new file\n", ts.util_name, file1, file2 ); let mut args = vec!["-s.1", "--max-unchanged-stats=1", "-F", file1, file2]; let mut delay = 500; for i in 0..2 { at.touch(file1); at.touch(file2); let mut p = ts.ucmd().args(&args).run_no_wait(); p.make_assertion_with_delay(delay).is_alive(); at.truncate(file1, "x\n"); p.delay(delay); at.rename(file1, file2); p.delay(delay); at.truncate(file1, "x2\n"); p.delay(delay); at.append(file2, "y\n"); p.delay(delay); at.append(file1, "z\n"); p.delay(delay); p.make_assertion().is_alive(); p.kill() .make_assertion() .with_all_output() .stderr_is(&expected_stderr) .stdout_is(&expected_stdout); at.remove(file1); at.remove(file2); if i == 0 { args.push("--use-polling"); } delay *= 3; // NOTE: Switch the first and second line because the events come in this order from // `notify::PollWatcher`. However, for GNU's tail, the order between polling and not // polling does not change. expected_stderr = format!( "{0}: '{2}' has been replaced; following new file\n\ {0}: '{1}' has become inaccessible: No such file or directory\n\ {0}: '{1}' has appeared; following new file\n", ts.util_name, file1, file2 ); } } #[test] #[cfg(not(target_os = "windows"))] // FIXME: for currently not working platforms fn test_follow_inotify_only_regular() { // The GNU test inotify-only-regular.sh uses strace to ensure that `tail -f` // doesn't make inotify syscalls and only uses inotify for regular files or fifos. // We just check if tailing a character device has the same behavior as GNU's tail. let ts = TestScenario::new(util_name!()); let mut p = ts.ucmd().arg("-f").arg("/dev/null").run_no_wait(); p.make_assertion_with_delay(200).is_alive(); p.kill() .make_assertion() .with_all_output() .no_stderr() .no_stdout(); } #[test] fn test_no_such_file() { new_ucmd!() .arg("missing") .fails() .stderr_is("tail: cannot open 'missing' for reading: No such file or directory\n") .no_stdout() .code_is(1); } #[test] fn test_no_trailing_newline() { new_ucmd!().pipe_in("x").succeeds().stdout_only("x"); } #[test] fn test_lines_zero_terminated() { new_ucmd!() .args(&["-z", "-n", "2"]) .pipe_in("a\0b\0c\0d\0e\0") .succeeds() .stdout_only("d\0e\0"); new_ucmd!() .args(&["-z", "-n", "+2"]) .pipe_in("a\0b\0c\0d\0e\0") .succeeds() .stdout_only("b\0c\0d\0e\0"); } #[test] fn test_presume_input_pipe_default() { new_ucmd!() .arg("---presume-input-pipe") .pipe_in_fixture(FOOBAR_TXT) .run() .stdout_is_fixture("foobar_stdin_default.expected") .no_stderr(); } #[test] #[cfg(not(windows))] fn test_fifo() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkfifo("FIFO"); let mut p = ts.ucmd().arg("FIFO").run_no_wait(); p.make_assertion_with_delay(500).is_alive(); p.kill() .make_assertion() .with_all_output() .no_stderr() .no_stdout(); for arg in ["-f", "-F"] { let mut p = ts.ucmd().arg(arg).arg("FIFO").run_no_wait(); p.make_assertion_with_delay(500).is_alive(); p.kill() .make_assertion() .with_all_output() .no_stderr() .no_stdout(); } } #[test] #[cfg(unix)] #[cfg(disable_until_fixed)] fn test_illegal_seek() { // This is here for reference only. // We don't call seek on fifos, so we don't hit this error case. // (Also see: https://github.com/coreutils/coreutils/pull/36) let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.append("FILE", "foo\n"); at.mkfifo("FIFO"); let mut p = ts.ucmd().arg("FILE").run_no_wait(); p.make_assertion_with_delay(500).is_alive(); at.rename("FILE", "FIFO"); p.delay(500); p.make_assertion().is_alive(); let expected_stderr = "tail: 'FILE' has been replaced; following new file\n\ tail: FILE: cannot seek to offset 0: Illegal seek\n"; p.kill() .make_assertion() .with_all_output() .stderr_is(expected_stderr) .stdout_is("foo\n") .code_is(1); // is this correct? after kill the code is not meaningful. } #[test] fn test_pipe_when_lines_option_value_is_higher_than_contained_lines() { let test_string = "a\nb\n"; new_ucmd!() .args(&["-n", "3"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-n", "4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-n", "999"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-n", "+3"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-n", "+4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-n", "+999"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); } #[test] fn test_pipe_when_negative_lines_option_given_no_newline_at_eof() { let test_string = "a\nb"; new_ucmd!() .args(&["-n", "0"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-n", "1"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("b"); new_ucmd!() .args(&["-n", "2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a\nb"); } #[test] fn test_pipe_when_positive_lines_option_given_no_newline_at_eof() { let test_string = "a\nb"; new_ucmd!() .args(&["-n", "+0"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a\nb"); new_ucmd!() .args(&["-n", "+1"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a\nb"); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("b"); } #[test] fn test_pipe_when_lines_option_given_multibyte_utf8_characters() { // the test string consists of from left to right a 4-byte,3-byte,2-byte,1-byte utf-8 character let test_string = "𝅘𝅥𝅮\n⏻\nƒ\na"; new_ucmd!() .args(&["-n", "+0"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("⏻\nƒ\na"); new_ucmd!() .args(&["-n", "+3"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("ƒ\na"); new_ucmd!() .args(&["-n", "+4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a"); new_ucmd!() .args(&["-n", "+5"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-n", "-4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-n", "-3"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("⏻\nƒ\na"); new_ucmd!() .args(&["-n", "-2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("ƒ\na"); new_ucmd!() .args(&["-n", "-1"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a"); new_ucmd!() .args(&["-n", "-0"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); } #[test] fn test_pipe_when_lines_option_given_input_size_is_equal_to_buffer_size_no_newline_at_eof() { let total_lines = 1; let random_string = RandomString::generate_with_delimiter( Alphanumeric, b'\n', total_lines, false, CHUNK_BUFFER_SIZE, ); let random_string = random_string.as_str(); let lines = random_string.split_inclusive('\n'); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); } #[test] fn test_pipe_when_lines_option_given_input_size_is_equal_to_buffer_size() { let total_lines = 100; let random_string = RandomString::generate_with_delimiter( Alphanumeric, b'\n', total_lines, true, CHUNK_BUFFER_SIZE, ); let random_string = random_string.as_str(); let lines = random_string.split_inclusive('\n'); new_ucmd!() .args(&["-n", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); new_ucmd!() .args(&["-n", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); let expected = lines.clone().skip(total_lines - 1).collect::(); new_ucmd!() .args(&["-n", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "-99"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); new_ucmd!() .args(&["-n", "-100"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); } #[test] fn test_pipe_when_lines_option_given_input_size_is_one_byte_greater_than_buffer_size() { let total_lines = 100; let random_string = RandomString::generate_with_delimiter( Alphanumeric, b'\n', total_lines, true, CHUNK_BUFFER_SIZE + 1, ); let random_string = random_string.as_str(); let lines = random_string.split_inclusive('\n'); new_ucmd!() .args(&["-n", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); let expected = lines.clone().skip(total_lines - 1).collect::(); new_ucmd!() .args(&["-n", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "-99"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); } // FIXME: windows: this test failed with timeout in the CI. Running this test in // a Windows VirtualBox image produces no errors. #[test] #[cfg(not(target_os = "windows"))] fn test_pipe_when_lines_option_given_input_size_has_multiple_size_of_buffer_size() { let total_lines = 100; let random_string = RandomString::generate_with_delimiter( Alphanumeric, b'\n', total_lines, true, CHUNK_BUFFER_SIZE * 3 + 1, ); let random_string = random_string.as_str(); let lines = random_string.split_inclusive('\n'); new_ucmd!() .args(&["-n", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); new_ucmd!() .args(&["-n", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); let expected = lines.clone().skip(total_lines - 1).collect::(); new_ucmd!() .args(&["-n", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); let expected = lines.clone().skip(1).collect::(); new_ucmd!() .args(&["-n", "-99"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(expected); new_ucmd!() .args(&["-n", "-100"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); } #[test] fn test_pipe_when_bytes_option_value_is_higher_than_contained_bytes() { let test_string = "a\nb"; new_ucmd!() .args(&["-c", "4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-c", "5"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-c", "999"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-c", "+4"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-c", "+5"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-c", "+999"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); } #[test] fn test_pipe_when_bytes_option_given_multibyte_utf8_characters() { // the test string consists of from left to right a 4-byte,3-byte,2-byte,1-byte utf-8 character let test_string = "𝅘𝅥𝅮⏻ƒa"; new_ucmd!() .args(&["-c", "+0"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); new_ucmd!() .args(&["-c", "+2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(&test_string.as_bytes()[1..]); new_ucmd!() .args(&["-c", "+5"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("⏻ƒa"); new_ucmd!() .args(&["-c", "+8"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("ƒa"); new_ucmd!() .args(&["-c", "+10"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a"); new_ucmd!() .args(&["-c", "+11"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["-c", "-1"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("a"); new_ucmd!() .args(&["-c", "-2"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(&"ƒa".as_bytes()[1..]); new_ucmd!() .args(&["-c", "-3"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("ƒa"); new_ucmd!() .args(&["-c", "-6"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only("⏻ƒa"); new_ucmd!() .args(&["-c", "-10"]) .pipe_in(test_string) .ignore_stdin_write_error() .succeeds() .stdout_only(test_string); } #[test] fn test_pipe_when_bytes_option_given_input_size_is_equal_to_buffer_size() { let random_string = RandomString::generate(AlphanumericNewline, CHUNK_BUFFER_SIZE); let random_string = random_string.as_str(); new_ucmd!() .args(&["-c", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); let expected = &random_string.as_bytes()[1..]; new_ucmd!() .args(&["-c", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); new_ucmd!() .args(&["-c", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); let expected = &random_string.as_bytes()[1..]; new_ucmd!() .args(&["-c", "-8191"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); new_ucmd!() .args(&["-c", "-8192"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(random_string); new_ucmd!() .args(&["-c", "-8193"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(random_string); let expected = &random_string.as_bytes()[CHUNK_BUFFER_SIZE - 1..]; new_ucmd!() .args(&["-c", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); } #[test] fn test_pipe_when_bytes_option_given_input_size_is_one_byte_greater_than_buffer_size() { let random_string = RandomString::generate(AlphanumericNewline, CHUNK_BUFFER_SIZE + 1); let random_string = random_string.as_str(); new_ucmd!() .args(&["-c", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); let expected = &random_string.as_bytes()[1..]; new_ucmd!() .args(&["-c", "+2"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); new_ucmd!() .args(&["-c", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); let expected = &random_string.as_bytes()[CHUNK_BUFFER_SIZE..]; new_ucmd!() .args(&["-c", "-1"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[1..]; new_ucmd!() .args(&["-c", "-8192"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); new_ucmd!() .args(&["-c", "-8193"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); } // FIXME: windows: this test failed with timeout in the CI. Running this test in // a Windows VirtualBox image produces no errors. #[test] #[cfg(not(target_os = "windows"))] fn test_pipe_when_bytes_option_given_input_size_has_multiple_size_of_buffer_size() { let random_string = RandomString::generate(AlphanumericNewline, CHUNK_BUFFER_SIZE * 3); let random_string = random_string.as_str(); new_ucmd!() .args(&["-c", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); new_ucmd!() .args(&["-c", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); let expected = &random_string.as_bytes()[8192..]; new_ucmd!() .args(&["-c", "+8193"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[8193..]; new_ucmd!() .args(&["-c", "+8194"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[16384..]; new_ucmd!() .args(&["-c", "+16385"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[16385..]; new_ucmd!() .args(&["-c", "+16386"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[16384..]; new_ucmd!() .args(&["-c", "-8192"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[16383..]; new_ucmd!() .args(&["-c", "-8193"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[8192..]; new_ucmd!() .args(&["-c", "-16384"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); let expected = &random_string.as_bytes()[8191..]; new_ucmd!() .args(&["-c", "-16385"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only_bytes(expected); new_ucmd!() .args(&["-c", "-24576"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); } #[test] fn test_seek_bytes_backward_outside_file() { new_ucmd!() .arg("-c") .arg("100") .arg(FOOBAR_TXT) .run() .stdout_is_fixture(FOOBAR_TXT); } #[test] fn test_seek_bytes_forward_outside_file() { new_ucmd!() .arg("-c") .arg("+100") .arg(FOOBAR_TXT) .run() .stdout_is(""); } // Some basic tests for ---presume-input-pipe. These tests build upon the // debug_assert in bounded tail to detect that we're using the bounded_tail in // case the option is given on command line. #[cfg(all(not(target_os = "android"), not(target_os = "windows")))] // FIXME: #[test] fn test_args_when_presume_input_pipe_given_input_is_pipe() { let random_string = RandomString::generate(AlphanumericNewline, 1000); let random_string = random_string.as_str(); new_ucmd!() .args(&["---presume-input-pipe", "-c", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["---presume-input-pipe", "-c", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); new_ucmd!() .args(&["---presume-input-pipe", "-n", "-0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .no_stdout() .no_stderr(); new_ucmd!() .args(&["---presume-input-pipe", "-n", "+0"]) .pipe_in(random_string) .ignore_stdin_write_error() .succeeds() .stdout_only(random_string); } #[test] fn test_args_when_presume_input_pipe_given_input_is_file() { let random_string = RandomString::generate(AlphanumericNewline, 1000); let random_string = random_string.as_str(); let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.write("data", random_string); ts.ucmd() .args(&["---presume-input-pipe", "-c", "-0", "data"]) .succeeds() .no_stdout() .no_stderr(); ts.ucmd() .args(&["---presume-input-pipe", "-c", "+0", "data"]) .succeeds() .stdout_only(random_string); ts.ucmd() .args(&["---presume-input-pipe", "-n", "-0", "data"]) .succeeds() .no_stdout() .no_stderr(); ts.ucmd() .args(&["---presume-input-pipe", "-n", "+0", "data"]) .succeeds() .stdout_only(random_string); } #[test] #[cfg(disable_until_fixed)] // FIXME: currently missing in the error message is the last line >>tail: no files remaining<< fn test_when_follow_retry_given_redirected_stdin_from_directory_then_correct_error_message() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("dir"); let expected = "tail: warning: --retry only effective for the initial open\n\ tail: error reading 'standard input': Is a directory\n\ tail: 'standard input': cannot follow end of this type of file\n\ tail: no files remaining\n"; ts.ucmd() .set_stdin(File::open(at.plus("dir")).unwrap()) .args(&["-f", "--retry"]) .fails() .stderr_only(expected) .code_is(1); } #[test] fn test_when_argument_file_is_a_directory() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("dir"); let expected = "tail: error reading 'dir': Is a directory\n"; ts.ucmd() .arg("dir") .fails() .stderr_only(expected) .code_is(1); } // TODO: make this work on windows #[test] #[cfg(unix)] fn test_when_argument_file_is_a_symlink() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let mut file = at.make_file("target"); at.symlink_file("target", "link"); ts.ucmd() .args(&["-c", "+0", "link"]) .succeeds() .no_stdout() .no_stderr(); let random_string = RandomString::generate(AlphanumericNewline, 100); let result = file.write_all(random_string.as_bytes()); assert!(result.is_ok()); ts.ucmd() .args(&["-c", "+0", "link"]) .succeeds() .stdout_only(random_string); at.mkdir("dir"); at.symlink_file("dir", "dir_link"); let expected = "tail: error reading 'dir_link': Is a directory\n"; ts.ucmd() .arg("dir_link") .fails() .stderr_only(expected) .code_is(1); } // TODO: make this work on windows #[test] #[cfg(unix)] fn test_when_argument_file_is_a_symlink_to_directory_then_error() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.mkdir("dir"); at.symlink_file("dir", "dir_link"); let expected = "tail: error reading 'dir_link': Is a directory\n"; ts.ucmd() .arg("dir_link") .fails() .stderr_only(expected) .code_is(1); } // TODO: make this work on windows #[test] #[cfg(unix)] #[cfg(disabled_until_fixed)] fn test_when_argument_file_is_a_faulty_symlink_then_error() { let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; at.symlink_file("self", "self"); #[cfg(all(not(target_env = "musl"), not(target_os = "android")))] let expected = "tail: cannot open 'self' for reading: Too many levels of symbolic links"; #[cfg(all(not(target_env = "musl"), target_os = "android"))] let expected = "tail: cannot open 'self' for reading: Too many symbolic links encountered"; #[cfg(all(target_env = "musl", not(target_os = "android")))] let expected = "tail: cannot open 'self' for reading: Symbolic link loop"; ts.ucmd() .arg("self") .fails() .stderr_only(expected) .code_is(1); at.symlink_file("missing", "broken"); let expected = "tail: cannot open 'broken' for reading: No such file or directory"; ts.ucmd() .arg("broken") .fails() .stderr_only(expected) .code_is(1); } #[test] #[cfg(unix)] #[cfg(disabled_until_fixed)] fn test_when_argument_file_is_non_existent_unix_socket_address_then_error() { use std::os::unix::net; let ts = TestScenario::new(util_name!()); let at = &ts.fixtures; let socket = "socket"; // We only bind to create the socket file but do not listen let result = net::UnixListener::bind(at.plus(socket)); assert!(result.is_ok()); #[cfg(all(not(target_os = "freebsd"), not(target_os = "macos")))] let expected_stderr = format!( "tail: cannot open '{}' for reading: No such device or address\n", socket ); #[cfg(target_os = "freebsd")] let expected_stderr = format!( "tail: cannot open '{}' for reading: Operation not supported\n", socket ); #[cfg(target_os = "macos")] let expected_stderr = format!( "tail: cannot open '{}' for reading: Operation not supported on socket\n", socket ); ts.ucmd() .arg(socket) .fails() .stderr_only(&expected_stderr) .code_is(1); let path = "file"; let mut file = at.make_file(path); let random_string = RandomString::generate(AlphanumericNewline, 100); let result = file.write_all(random_string.as_bytes()); assert!(result.is_ok()); let expected_stdout = vec![format!("==> {} <==", path), random_string].join("\n"); ts.ucmd() .args(&["-c", "+0", path, socket]) .fails() .stdout_is(&expected_stdout) .stderr_is(&expected_stderr); // tail does not stop processing files when having encountered a "No such // device or address" error. ts.ucmd() .args(&["-c", "+0", socket, path]) .fails() .stdout_is(&expected_stdout) .stderr_is(&expected_stderr); } #[test] #[cfg(disabled_until_fixed)] fn test_when_argument_files_are_simple_combinations_of_stdin_and_regular_file() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; fixtures.write("empty", ""); fixtures.write("data", "file data"); fixtures.write("fifo", "fifo data"); let expected = "==> standard input <==\n\ fifo data\n\ ==> empty <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "empty"]) .set_stdin(File::open(fixtures.plus("fifo")).unwrap()) .run() .success() .stdout_only(expected); let expected = "==> standard input <==\n\ \n\ ==> empty <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "empty"]) .pipe_in("") .run() .success() .stdout_only(expected); let expected = "==> empty <==\n\ \n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "empty", "-"]) .pipe_in("") .run() .success() .stdout_only(expected); let expected = "==> empty <==\n\ \n\ ==> standard input <==\n\ fifo data"; scene .ucmd() .args(&["-c", "+0", "empty", "-"]) .set_stdin(File::open(fixtures.plus("fifo")).unwrap()) .run() .success() .stdout_only(expected); let expected = "==> standard input <==\n\ pipe data\n\ ==> data <==\n\ file data"; scene .ucmd() .args(&["-c", "+0", "-", "data"]) .pipe_in("pipe data") .run() .success() .stdout_only(expected); let expected = "==> data <==\n\ file data\n\ ==> standard input <==\n\ pipe data"; scene .ucmd() .args(&["-c", "+0", "data", "-"]) .pipe_in("pipe data") .run() .success() .stdout_only(expected); let expected = "==> standard input <==\n\ pipe data\n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "-"]) .pipe_in("pipe data") .run() .success() .stdout_only(expected); let expected = "==> standard input <==\n\ fifo data\n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "-"]) .set_stdin(File::open(fixtures.plus("fifo")).unwrap()) .run() .success() .stdout_only(expected); } #[test] #[cfg(disabled_until_fixed)] fn test_when_argument_files_are_triple_combinations_of_fifo_pipe_and_regular_file() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; fixtures.write("empty", ""); fixtures.write("data", "file data"); fixtures.write("fifo", "fifo data"); let expected = "==> standard input <==\n\ \n\ ==> empty <==\n\ \n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "empty", "-"]) .set_stdin(File::open(fixtures.plus("empty")).unwrap()) .run() .stdout_only(expected) .success(); let expected = "==> standard input <==\n\ \n\ ==> empty <==\n\ \n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "empty", "-"]) .pipe_in("") .stderr_to_stdout() .run() .stdout_only(expected) .success(); let expected = "==> standard input <==\n\ pipe data\n\ ==> data <==\n\ file data\n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "data", "-"]) .pipe_in("pipe data") .run() .stdout_only(expected) .success(); // Correct behavior in a sh shell is to remember the file pointer for the fifo, so we don't // print the fifo twice. This matches the behavior, if only the pipe is present without fifo // (See test above). Note that for example a zsh shell prints the pipe data and has therefore // different output from the sh shell (or cmd shell on windows). // windows: tail returns with success although there is an error message present (on some // windows systems). This error message comes from `echo` (the line ending `\r\n` indicates that // too) which cannot write to the pipe because tail finished before echo was able to write to // the pipe. Seems that windows `cmd` (like posix shells) ignores pipes when a fifo is present. // This is actually the wished behavior and the test therefore succeeds. #[cfg(windows)] let expected = "==> standard input <==\n\ fifo data\n\ ==> data <==\n\ file data\n\ ==> standard input <==\n\ (The process tried to write to a nonexistent pipe.\r\n)?"; #[cfg(unix)] let expected = "==> standard input <==\n\ fifo data\n\ ==> data <==\n\ file data\n\ ==> standard input <==\n"; #[cfg(windows)] let cmd = ["cmd", "/C"]; #[cfg(unix)] let cmd = ["sh", "-c"]; scene .cmd(cmd[0]) .arg(cmd[1]) .arg(format!( "echo pipe data | {} tail -c +0 - data - < fifo", scene.bin_path.display(), )) .run() .stdout_only(expected) .success(); let expected = "==> standard input <==\n\ fifo data\n\ ==> data <==\n\ file data\n\ ==> standard input <==\n"; scene .ucmd() .args(&["-c", "+0", "-", "data", "-"]) .set_stdin(File::open(fixtures.plus("fifo")).unwrap()) .run() .stdout_only(expected) .success(); } // Bug description: The content of a file is not printed to stdout if the output data does not // contain newlines and --follow was given as arguments. // // This test is only formal on linux, since we currently do not detect this kind of error within the // test system. However, this behavior shows up on the command line and, at the time of writing this // description, with this test on macos and windows. #[test] #[cfg(disable_until_fixed)] fn test_when_follow_retry_then_initial_print_of_file_is_written_to_stdout() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let expected_stdout = "file data"; fixtures.write("data", expected_stdout); let mut child = scene .ucmd() .args(&["--follow=name", "--retry", "data"]) .run_no_wait(); child .delay(1500) .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } // TODO: Add test for the warning `--pid=PID is not supported on this system` #[test] fn test_args_when_settings_check_warnings_then_shows_warnings() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let file_data = "file data\n"; fixtures.write("data", file_data); let expected_stdout = format!( "tail: warning: --retry ignored; --retry is useful only when following\n\ {file_data}" ); scene .ucmd() .args(&["--retry", "data"]) .stderr_to_stdout() .run() .stdout_only(expected_stdout) .success(); let expected_stdout = format!( "tail: warning: --retry only effective for the initial open\n\ {file_data}" ); let mut child = scene .ucmd() .args(&["--follow=descriptor", "--retry", "data"]) .stderr_to_stdout() .run_no_wait(); child .delay(500) .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); let expected_stdout = format!( "tail: warning: PID ignored; --pid=PID is useful only when following\n\ {file_data}" ); scene .ucmd() .args(&["--pid=1000", "data"]) .stderr_to_stdout() .run() .stdout_only(expected_stdout) .success(); let expected_stdout = format!( "tail: warning: --retry ignored; --retry is useful only when following\n\ tail: warning: PID ignored; --pid=PID is useful only when following\n\ {file_data}" ); scene .ucmd() .args(&["--pid=1000", "--retry", "data"]) .stderr_to_stdout() .run() .stdout_only(expected_stdout) .success(); } /// TODO: Write similar tests for windows #[test] #[cfg(target_os = "linux")] fn test_args_when_settings_check_warnings_follow_indefinitely_then_warning() { let scene = TestScenario::new(util_name!()); let file_data = "file data\n"; scene.fixtures.write("data", file_data); let expected_stdout = "==> standard input <==\n"; let expected_stderr = "tail: warning: following standard input indefinitely is ineffective\n"; // `tail -f - data` (without any redirect) would also print this warning in a terminal but we're // not attached to a `tty` in the ci, so it's not possible to setup a test case for this // particular usage. However, setting stdin to a `tty` behaves equivalently and we're faking an // attached `tty` that way. // testing here that the warning is printed to stderr // tail -f - data < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", "data"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stderr_is(expected_stderr) .stdout_is(expected_stdout); let expected_stdout = "tail: warning: following standard input indefinitely is ineffective\n\ ==> standard input <==\n"; // same like above but this time the order of the output matters and we're redirecting stderr to // stdout // tail -f - data < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", "data"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); let expected_stdout = format!( "tail: warning: following standard input indefinitely is ineffective\n\ ==> data <==\n\ {file_data}\n\ ==> standard input <==\n" ); // tail -f data - < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "data", "-"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); let expected_stdout = "tail: warning: following standard input indefinitely is ineffective\n\ ==> standard input <==\n"; // tail -f - - < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", "-"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); let expected_stdout = "tail: warning: following standard input indefinitely is ineffective\n\ ==> standard input <==\n"; // tail -f - - data < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", "-", "data"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); let expected_stdout = "tail: warning: following standard input indefinitely is ineffective\n\ ==> standard input <==\n"; // tail --pid=100000 -f - data < /dev/ptmx let mut child = scene .ucmd() .args(&["--follow=descriptor", "--pid=100000", "-", "data"]) .set_stdin(File::open(text::DEV_PTMX).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } #[test] #[cfg(unix)] fn test_args_when_settings_check_warnings_follow_indefinitely_then_no_warning() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; #[cfg(target_vendor = "apple")] let delay = 1000; #[cfg(not(target_vendor = "apple"))] let delay = 500; let file_data = "file data\n"; let fifo_data = "fifo data\n"; let fifo_name = "fifo"; let file_name = "data"; fixtures.write(file_name, file_data); fixtures.write(fifo_name, fifo_data); let pipe_data = "pipe data"; let expected_stdout = format!( "==> standard input <==\n\ {pipe_data}\n\ ==> {file_name} <==\n\ {file_data}" ); let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", file_name]) .pipe_in(pipe_data) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(delay).is_alive(); child .kill() .make_assertion_with_delay(delay) .with_current_output() .stdout_only(expected_stdout); // Test with regular file instead of /dev/tty // Fails currently on macos with // Diff < left / right > : // ==> standard input <== // >fifo data // > // ==> data <== // file data #[cfg(not(target_vendor = "apple"))] { let expected_stdout = format!( "==> standard input <==\n\ {fifo_data}\n\ ==> {file_name} <==\n\ {file_data}" ); let mut child = scene .ucmd() .args(&["--follow=descriptor", "-", file_name]) .set_stdin(File::open(fixtures.plus(fifo_name)).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(delay).is_alive(); child .kill() .make_assertion_with_delay(delay) .with_current_output() .stdout_only(expected_stdout); let expected_stdout = format!( "==> standard input <==\n\ {fifo_data}\n\ ==> {file_name} <==\n\ {file_data}" ); let mut child = scene .ucmd() .args(&["--follow=descriptor", "--pid=0", "-", file_name]) .set_stdin(File::open(fixtures.plus(fifo_name)).unwrap()) .stderr_to_stdout() .run_no_wait(); child.make_assertion_with_delay(delay).is_alive(); child .kill() .make_assertion_with_delay(delay) .with_current_output() .stdout_only(expected_stdout); } } /// The expected test outputs come from gnu's tail. #[test] #[cfg(disable_until_fixed)] fn test_follow_when_files_are_pointing_to_same_relative_file_and_data_is_appended() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let file_data = "file data"; let relative_path_name = "data"; fixtures.write(relative_path_name, file_data); let absolute_path = fixtures.plus("data").canonicalize().unwrap(); // run with relative path first and then the absolute path let mut child = scene .ucmd() .args(&[ "--follow=name", relative_path_name, absolute_path.to_str().unwrap(), ]) .run_no_wait(); let more_data = "more data"; child.delay(500); fixtures.append(relative_path_name, more_data); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}\n\ ==> {0} <==\n\ {3}", relative_path_name, file_data, absolute_path.to_str().unwrap(), more_data ); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .is_alive(); child .kill() .make_assertion() .with_current_output() .stderr_only(expected_stdout); // run with absolute path first and then the relative path fixtures.write(relative_path_name, file_data); let mut child = scene .ucmd() .args(&[ "--follow=name", absolute_path.to_str().unwrap(), relative_path_name, ]) .run_no_wait(); child.delay(500); let more_data = "more data"; fixtures.append(relative_path_name, more_data); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}\n\ ==> {0} <==\n\ {3}", absolute_path.to_str().unwrap(), file_data, relative_path_name, more_data ); child .make_assertion_with_delay(DEFAULT_SLEEP_INTERVAL_MILLIS) .is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } /// The expected test outputs come from gnu's tail. #[test] #[cfg(disable_until_fixed)] fn test_follow_when_files_are_pointing_to_same_relative_file_and_file_is_truncated() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let file_data = "file data"; let relative_path_name = "data"; fixtures.write(relative_path_name, file_data); let absolute_path = fixtures.plus("data").canonicalize().unwrap(); let mut child = scene .ucmd() .args(&[ "--follow=descriptor", "--max-unchanged-stats=1", "--sleep-interval=0.1", relative_path_name, absolute_path.to_str().unwrap(), ]) .stderr_to_stdout() .run_no_wait(); child.delay(500); let less_data = "less"; fixtures.write(relative_path_name, "less"); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}{4}: {0}: file truncated\n\ \n\ ==> {0} <==\n\ {3}", relative_path_name, // 0 file_data, // 1 absolute_path.to_str().unwrap(), // 2 less_data, // 3 scene.util_name // 4 ); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } /// The expected test outputs come from gnu's tail. #[test] #[cfg(unix)] #[cfg(disable_until_fixed)] fn test_follow_when_file_and_symlink_are_pointing_to_same_file_and_append_data() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let file_data = "file data"; let path_name = "data"; let link_name = "link"; fixtures.write(path_name, file_data); fixtures.symlink_file(path_name, link_name); let mut child = scene .ucmd() .args(&[ "--follow=descriptor", "--max-unchanged-stats=1", "--sleep-interval=0.1", path_name, link_name, ]) .run_no_wait(); child.delay(500); let more_data = "more data"; fixtures.append(path_name, more_data); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}\n\ ==> {0} <==\n\ {3}\n\ ==> {2} <==\n\ {3}", path_name, // 0 file_data, // 1 link_name, // 2 more_data, // 3 ); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); fixtures.write(path_name, file_data); let mut child = scene .ucmd() .args(&[ "--follow=descriptor", "--max-unchanged-stats=1", "--sleep-interval=0.1", link_name, path_name, ]) .run_no_wait(); child.delay(500); let more_data = "more data"; fixtures.append(path_name, more_data); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}\n\ ==> {0} <==\n\ {3}\n\ ==> {2} <==\n\ {3}", link_name, // 0 file_data, // 1 path_name, // 2 more_data, // 3 ); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } // Fails with: // 'Assertion failed. Expected 'tail' to be running but exited with status=exit status: 1. // stdout: // stderr: tail: warning: --retry ignored; --retry is useful only when following // tail: error reading 'dir': Is a directory // ' #[test] #[cfg(disabled_until_fixed)] fn test_args_when_directory_given_shorthand_big_f_together_with_retry() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let dirname = "dir"; fixtures.mkdir(dirname); let expected_stderr = format!( "tail: error reading '{0}': Is a directory\n\ tail: {0}: cannot follow end of this type of file\n", dirname ); let mut child = scene.ucmd().args(&["-F", "--retry", "dir"]).run_no_wait(); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stderr_only(expected_stderr); } /// Fails on macos sometimes with /// Diff < left / right > : /// ==> data <== /// file data /// ==> /absolute/path/to/data <== /// file data /// /// Fails on windows with /// Diff < left / right > : // ==> data <== // file data // ==> \\?\C:\Users\runneradmin\AppData\Local\Temp\.tmpi6lNnX\data <== // >file data // < // // Fails on freebsd with // Diff < left / right > : // ==> data <== // file data // ==> /tmp/.tmpZPXPlS/data <== // >file data // < #[test] #[cfg(all( not(target_vendor = "apple"), not(target_os = "windows"), not(target_os = "freebsd") ))] fn test_follow_when_files_are_pointing_to_same_relative_file_and_file_stays_same_size() { let scene = TestScenario::new(util_name!()); let fixtures = &scene.fixtures; let file_data = "file data"; let relative_path_name = "data"; fixtures.write(relative_path_name, file_data); let absolute_path = scene.fixtures.plus("data").canonicalize().unwrap(); let mut child = scene .ucmd() .args(&[ "--follow=descriptor", "--max-unchanged-stats=1", "--sleep-interval=0.1", relative_path_name, absolute_path.to_str().unwrap(), ]) .run_no_wait(); child.delay(500); let same_data = "same data"; // equal size to file_data fixtures.write(relative_path_name, same_data); let expected_stdout = format!( "==> {0} <==\n\ {1}\n\ ==> {2} <==\n\ {1}", relative_path_name, // 0 file_data, // 1 absolute_path.to_str().unwrap(), // 2 ); child.make_assertion_with_delay(500).is_alive(); child .kill() .make_assertion() .with_current_output() .stdout_only(expected_stdout); } #[rstest] #[case::exponent_exceed_float_max("1.0e2048")] #[case::underscore_delimiter("1_000")] #[case::only_point(".")] #[case::space_in_primes("' '")] #[case::space(" ")] #[case::empty("")] #[case::comma_separator("0,0")] #[case::words_nominator_fract("one.zero")] #[case::words_fract(".zero")] #[case::words_nominator("one.")] #[case::two_points("0..0")] #[case::seconds_unit("1.0s")] #[case::circumflex_exponent("1.0e^1000")] fn test_args_sleep_interval_when_illegal_argument_then_usage_error(#[case] sleep_interval: &str) { new_ucmd!() .args(&["--sleep-interval", sleep_interval]) .run() .usage_error(format!("invalid number of seconds: '{sleep_interval}'")) .code_is(1); }