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Code Issues Packages 1 Wiki Activity

feat(watcher): clear screen on each restart (#12613)

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This commit adds automatic clearing of terminal screen after
restarting execution on file change.
This commit is contained in:
Bartek Iwańczuk 2021-12-11 01:12:25 +01:00 committed by GitHub
parent 11a2a3593d
commit 13d7d57227
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 45 additions and 5 deletions
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7
cli/file_watcher.rs
View file

@ -21,6 +21,7 @@ use tokio::select;
use tokio::sync::mpsc;
use tokio::time::sleep;
const CLEAR_SCREEN: &str = "\x1B[2J\x1B[1;1H";
const DEBOUNCE_INTERVAL: Duration = Duration::from_millis(200);
struct DebouncedReceiver {
@ -90,6 +91,8 @@ where
paths_to_watch,
result,
} => {
// Clear screen first
eprint!("{}", CLEAR_SCREEN);
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
@ -156,6 +159,10 @@ where
}
};
// Clear screen first
eprint!("{}", CLEAR_SCREEN);
info!("{} {} started.", colors::intense_blue("Watcher"), job_name,);
loop {
let watcher = new_watcher(&paths_to_watch, sender.clone())?;

43
cli/tests/integration/watcher_tests.rs
View file

@ -6,6 +6,8 @@ use std::io::BufRead;
use tempfile::TempDir;
use test_util as util;
const CLEAR_SCREEN: &str = r#"[2J"#;
macro_rules! assert_contains {
($string:expr, $($test:expr),+) => {
let string = $string; // This might be a function call or something
@ -115,7 +117,9 @@ fn lint_watch_test() {
.spawn()
.expect("Failed to spawn script");
let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Lint started");
let mut output = read_all_lints(&mut stderr_lines);
let expected = std::fs::read_to_string(badly_linted_output).unwrap();
assert_eq!(output, expected);
@ -175,6 +179,9 @@ fn lint_watch_without_args_test() {
.expect("Failed to spawn script");
let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Lint started");
let mut output = read_all_lints(&mut stderr_lines);
let expected = std::fs::read_to_string(badly_linted_output).unwrap();
assert_eq!(output, expected);
@ -266,6 +273,9 @@ fn fmt_watch_test() {
.unwrap();
let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Fmt started");
assert_contains!(
skip_restarting_line(&mut stderr_lines),
"badly_formatted.js"
@ -312,6 +322,9 @@ fn fmt_watch_without_args_test() {
.unwrap();
let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Fmt started");
assert_contains!(
skip_restarting_line(&mut stderr_lines),
"badly_formatted.js"
@ -402,6 +415,9 @@ fn bundle_js_watch() {
let (_stdout_lines, mut stderr_lines) = child_lines(&mut deno);
assert_contains!(stderr_lines.next().unwrap(), "Check");
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Bundle started");
assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.js");
assert_contains!(stderr_lines.next().unwrap(), "mod6.bundle.js");
let file = PathBuf::from(&bundle);
@ -411,7 +427,9 @@ fn bundle_js_watch() {
write(&file_to_watch, "console.log('Hello world2');").unwrap();
assert_contains!(stderr_lines.next().unwrap(), "Check");
assert_contains!(stderr_lines.next().unwrap(), "File change detected!");
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "File change detected!");
assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.js");
assert_contains!(stderr_lines.next().unwrap(), "mod6.bundle.js");
let file = PathBuf::from(&bundle);
@ -449,6 +467,9 @@ fn bundle_watch_not_exit() {
.unwrap();
let (_stdout_lines, mut stderr_lines) = child_lines(&mut deno);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Bundle started");
assert_contains!(stderr_lines.next().unwrap(), "error:");
assert_contains!(stderr_lines.next().unwrap(), "Bundle failed");
// the target file hasn't been created yet
@ -458,7 +479,9 @@ fn bundle_watch_not_exit() {
write(&file_to_watch, "console.log(42);").unwrap();
assert_contains!(stderr_lines.next().unwrap(), "Check");
assert_contains!(stderr_lines.next().unwrap(), "File change detected!");
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "File change detected!");
assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.js");
assert_contains!(stderr_lines.next().unwrap(), "target.js");
@ -603,6 +626,9 @@ fn run_watch_load_unload_events() {
.unwrap();
// Wait for the restart
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Process started");
assert_contains!(stderr_lines.next().unwrap(), "Restarting");
// Confirm that the unload event was dispatched from the first run
@ -636,13 +662,18 @@ fn run_watch_not_exit() {
.unwrap();
let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Process started");
assert_contains!(stderr_lines.next().unwrap(), "error:");
assert_contains!(stderr_lines.next().unwrap(), "Process failed");
// Make sure the watcher actually restarts and works fine with the proper syntax
write(&file_to_watch, "console.log(42);").unwrap();
assert_contains!(stderr_lines.next().unwrap(), "Restarting");
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Restarting");
assert_contains!(stdout_lines.next().unwrap(), "42");
wait_for("Process finished", &mut stderr_lines);
check_alive_then_kill(child);
@ -690,7 +721,9 @@ fn run_watch_with_import_map_and_relative_paths() {
.spawn()
.unwrap();
let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
let next_line = stderr_lines.next().unwrap();
assert_contains!(&next_line, CLEAR_SCREEN);
assert_contains!(&next_line, "Process started");
assert_contains!(stderr_lines.next().unwrap(), "Process finished");
assert_contains!(stdout_lines.next().unwrap(), "Hello world");