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Code Issues Packages 1 Wiki Activity

test: fix flaky "run_watch" test (#8519)

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Bartek Iwańczuk 2020-11-27 20:22:09 +01:00 committed by GitHub
parent 228ecb0acb
commit 40bf26b37d
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1 changed files with 17 additions and 6 deletions
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23
cli/tests/integration_tests.rs
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@ -1328,6 +1328,17 @@ fn info_with_compiled_source() {
assert_eq!(output.stderr, b"");
}
// Helper function to skip watcher output that doesn't contain
// "Process finished" phrase.
fn wait_for_process_finished(stderr_lines: &mut impl Iterator<Item = String>) {
loop {
let msg = stderr_lines.next().unwrap();
if msg.contains("Process finished") {
break;
}
}
}
#[test]
fn run_watch() {
let t = TempDir::new().expect("tempdir fail");
@ -1355,7 +1366,7 @@ fn run_watch() {
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
assert!(stdout_lines.next().unwrap().contains("Hello world"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
// TODO(lucacasonato): remove this timeout. It seems to be needed on Linux.
std::thread::sleep(std::time::Duration::from_secs(1));
@ -1368,7 +1379,7 @@ fn run_watch() {
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("Hello world2"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
// Add dependency
let another_file = t.path().join("another_file.js");
@ -1382,7 +1393,7 @@ fn run_watch() {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains('0'));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
// Confirm that restarting occurs when a new file is updated
std::fs::write(&another_file, "export const foo = 42;")
@ -1390,7 +1401,7 @@ fn run_watch() {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("42"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
// Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
std::fs::write(&file_to_watch, "syntax error ^^")
@ -1398,7 +1409,7 @@ fn run_watch() {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
// Then restore the file
std::fs::write(
@ -1409,7 +1420,7 @@ fn run_watch() {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("42"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
wait_for_process_finished(&mut stderr_lines);
child.kill().unwrap();
drop(t);