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-rw-r--r--cli/tests/integration/watcher_tests.rs1217
1 files changed, 1217 insertions, 0 deletions
diff --git a/cli/tests/integration/watcher_tests.rs b/cli/tests/integration/watcher_tests.rs
new file mode 100644
index 000000000..375bf6804
--- /dev/null
+++ b/cli/tests/integration/watcher_tests.rs
@@ -0,0 +1,1217 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use flaky_test::flaky_test;
+use std::fs::write;
+use std::io::BufRead;
+use test_util as util;
+use test_util::assert_contains;
+use test_util::TempDir;
+
+use util::assert_not_contains;
+
+const CLEAR_SCREEN: &str = r#"[2J"#;
+
+// Helper function to skip watcher output that contains "Restarting"
+// phrase.
+fn skip_restarting_line(
+ stderr_lines: &mut impl Iterator<Item = String>,
+) -> String {
+ loop {
+ let msg = stderr_lines.next().unwrap();
+ if !msg.contains("Restarting") {
+ return msg;
+ }
+ }
+}
+
+fn read_all_lints(stderr_lines: &mut impl Iterator<Item = String>) -> String {
+ let mut str = String::new();
+ for t in stderr_lines {
+ let t = util::strip_ansi_codes(&t);
+ if t.starts_with("Watcher File change detected") {
+ continue;
+ }
+ if t.starts_with("Watcher") {
+ break;
+ }
+ if t.starts_with('(') {
+ str.push_str(&t);
+ str.push('\n');
+ }
+ }
+ str
+}
+
+fn wait_for(
+ condition: impl Fn(&str) -> bool,
+ lines: &mut impl Iterator<Item = String>,
+) {
+ loop {
+ let msg = lines.next().unwrap();
+ if condition(&msg) {
+ break;
+ }
+ }
+}
+
+fn wait_contains(s: &str, lines: &mut impl Iterator<Item = String>) {
+ wait_for(|msg| msg.contains(s), lines)
+}
+
+fn read_line(s: &str, lines: &mut impl Iterator<Item = String>) -> String {
+ lines.find(|m| m.contains(s)).unwrap()
+}
+
+fn check_alive_then_kill(mut child: std::process::Child) {
+ assert!(child.try_wait().unwrap().is_none());
+ child.kill().unwrap();
+}
+
+fn child_lines(
+ child: &mut std::process::Child,
+) -> (impl Iterator<Item = String>, impl Iterator<Item = String>) {
+ let stdout_lines = std::io::BufReader::new(child.stdout.take().unwrap())
+ .lines()
+ .map(|r| {
+ let line = r.unwrap();
+ eprintln!("STDOUT: {}", line);
+ line
+ });
+ let stderr_lines = std::io::BufReader::new(child.stderr.take().unwrap())
+ .lines()
+ .map(|r| {
+ let line = r.unwrap();
+ eprintln!("STDERR: {}", line);
+ line
+ });
+ (stdout_lines, stderr_lines)
+}
+
+#[test]
+fn lint_watch_test() {
+ let t = TempDir::new();
+ let badly_linted_original =
+ util::testdata_path().join("lint/watch/badly_linted.js");
+ let badly_linted_output =
+ util::testdata_path().join("lint/watch/badly_linted.js.out");
+ let badly_linted_fixed1 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed1.js");
+ let badly_linted_fixed1_output =
+ util::testdata_path().join("lint/watch/badly_linted_fixed1.js.out");
+ let badly_linted_fixed2 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed2.js");
+ let badly_linted_fixed2_output =
+ util::testdata_path().join("lint/watch/badly_linted_fixed2.js.out");
+ let badly_linted = t.path().join("badly_linted.js");
+
+ std::fs::copy(badly_linted_original, &badly_linted).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("lint")
+ .arg(&badly_linted)
+ .arg("--watch")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+ let next_line = stderr_lines.next().unwrap();
+ 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);
+
+ // Change content of the file again to be badly-linted
+ std::fs::copy(badly_linted_fixed1, &badly_linted).unwrap();
+ std::thread::sleep(std::time::Duration::from_secs(1));
+
+ output = read_all_lints(&mut stderr_lines);
+ let expected = std::fs::read_to_string(badly_linted_fixed1_output).unwrap();
+ assert_eq!(output, expected);
+
+ // Change content of the file again to be badly-linted
+ std::fs::copy(badly_linted_fixed2, &badly_linted).unwrap();
+
+ output = read_all_lints(&mut stderr_lines);
+ let expected = std::fs::read_to_string(badly_linted_fixed2_output).unwrap();
+ assert_eq!(output, expected);
+
+ // the watcher process is still alive
+ assert!(child.try_wait().unwrap().is_none());
+
+ child.kill().unwrap();
+ drop(t);
+}
+
+#[test]
+fn lint_watch_without_args_test() {
+ let t = TempDir::new();
+ let badly_linted_original =
+ util::testdata_path().join("lint/watch/badly_linted.js");
+ let badly_linted_output =
+ util::testdata_path().join("lint/watch/badly_linted.js.out");
+ let badly_linted_fixed1 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed1.js");
+ let badly_linted_fixed1_output =
+ util::testdata_path().join("lint/watch/badly_linted_fixed1.js.out");
+ let badly_linted_fixed2 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed2.js");
+ let badly_linted_fixed2_output =
+ util::testdata_path().join("lint/watch/badly_linted_fixed2.js.out");
+ let badly_linted = t.path().join("badly_linted.js");
+
+ std::fs::copy(badly_linted_original, &badly_linted).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(t.path())
+ .arg("lint")
+ .arg("--watch")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ let next_line = stderr_lines.next().unwrap();
+ 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);
+
+ // Change content of the file again to be badly-linted
+ std::fs::copy(badly_linted_fixed1, &badly_linted).unwrap();
+
+ output = read_all_lints(&mut stderr_lines);
+ let expected = std::fs::read_to_string(badly_linted_fixed1_output).unwrap();
+ assert_eq!(output, expected);
+
+ // Change content of the file again to be badly-linted
+ std::fs::copy(badly_linted_fixed2, &badly_linted).unwrap();
+ std::thread::sleep(std::time::Duration::from_secs(1));
+
+ output = read_all_lints(&mut stderr_lines);
+ let expected = std::fs::read_to_string(badly_linted_fixed2_output).unwrap();
+ assert_eq!(output, expected);
+
+ // the watcher process is still alive
+ assert!(child.try_wait().unwrap().is_none());
+
+ child.kill().unwrap();
+ drop(t);
+}
+
+#[test]
+fn lint_all_files_on_each_change_test() {
+ let t = TempDir::new();
+ let badly_linted_fixed0 =
+ util::testdata_path().join("lint/watch/badly_linted.js");
+ let badly_linted_fixed1 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed1.js");
+ let badly_linted_fixed2 =
+ util::testdata_path().join("lint/watch/badly_linted_fixed2.js");
+
+ let badly_linted_1 = t.path().join("badly_linted_1.js");
+ let badly_linted_2 = t.path().join("badly_linted_2.js");
+ std::fs::copy(badly_linted_fixed0, badly_linted_1).unwrap();
+ std::fs::copy(badly_linted_fixed1, &badly_linted_2).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("lint")
+ .arg(t.path())
+ .arg("--watch")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 2 files");
+
+ std::fs::copy(badly_linted_fixed2, badly_linted_2).unwrap();
+
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 2 files");
+
+ assert!(child.try_wait().unwrap().is_none());
+
+ child.kill().unwrap();
+ drop(t);
+}
+
+#[test]
+fn fmt_watch_test() {
+ let fmt_testdata_path = util::testdata_path().join("fmt");
+ let t = TempDir::new();
+ let fixed = fmt_testdata_path.join("badly_formatted_fixed.js");
+ let badly_formatted_original = fmt_testdata_path.join("badly_formatted.mjs");
+ let badly_formatted = t.path().join("badly_formatted.js");
+ std::fs::copy(&badly_formatted_original, &badly_formatted).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(&fmt_testdata_path)
+ .arg("fmt")
+ .arg(&badly_formatted)
+ .arg("--watch")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ let next_line = stderr_lines.next().unwrap();
+ assert_contains!(&next_line, "Fmt started");
+ assert_contains!(
+ skip_restarting_line(&mut stderr_lines),
+ "badly_formatted.js"
+ );
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 1 file");
+
+ let expected = std::fs::read_to_string(fixed.clone()).unwrap();
+ let actual = std::fs::read_to_string(badly_formatted.clone()).unwrap();
+ assert_eq!(actual, expected);
+
+ // Change content of the file again to be badly formatted
+ std::fs::copy(&badly_formatted_original, &badly_formatted).unwrap();
+
+ assert_contains!(
+ skip_restarting_line(&mut stderr_lines),
+ "badly_formatted.js"
+ );
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 1 file");
+
+ // Check if file has been automatically formatted by watcher
+ let expected = std::fs::read_to_string(fixed).unwrap();
+ let actual = std::fs::read_to_string(badly_formatted).unwrap();
+ assert_eq!(actual, expected);
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn fmt_watch_without_args_test() {
+ let fmt_testdata_path = util::testdata_path().join("fmt");
+ let t = TempDir::new();
+ let fixed = fmt_testdata_path.join("badly_formatted_fixed.js");
+ let badly_formatted_original = fmt_testdata_path.join("badly_formatted.mjs");
+ let badly_formatted = t.path().join("badly_formatted.js");
+ std::fs::copy(&badly_formatted_original, &badly_formatted).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(t.path())
+ .arg("fmt")
+ .arg("--watch")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ let next_line = stderr_lines.next().unwrap();
+ assert_contains!(&next_line, "Fmt started");
+ assert_contains!(
+ skip_restarting_line(&mut stderr_lines),
+ "badly_formatted.js"
+ );
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 1 file");
+
+ let expected = std::fs::read_to_string(fixed.clone()).unwrap();
+ let actual = std::fs::read_to_string(badly_formatted.clone()).unwrap();
+ assert_eq!(actual, expected);
+
+ // Change content of the file again to be badly formatted
+ std::fs::copy(&badly_formatted_original, &badly_formatted).unwrap();
+ assert_contains!(
+ skip_restarting_line(&mut stderr_lines),
+ "badly_formatted.js"
+ );
+ assert_contains!(read_line("Checked", &mut stderr_lines), "Checked 1 file");
+
+ // Check if file has been automatically formatted by watcher
+ let expected = std::fs::read_to_string(fixed).unwrap();
+ let actual = std::fs::read_to_string(badly_formatted).unwrap();
+ assert_eq!(actual, expected);
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn fmt_check_all_files_on_each_change_test() {
+ let t = TempDir::new();
+ let fmt_testdata_path = util::testdata_path().join("fmt");
+ let badly_formatted_original = fmt_testdata_path.join("badly_formatted.mjs");
+ let badly_formatted_1 = t.path().join("badly_formatted_1.js");
+ let badly_formatted_2 = t.path().join("badly_formatted_2.js");
+ std::fs::copy(&badly_formatted_original, &badly_formatted_1).unwrap();
+ std::fs::copy(&badly_formatted_original, badly_formatted_2).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(&fmt_testdata_path)
+ .arg("fmt")
+ .arg(t.path())
+ .arg("--watch")
+ .arg("--check")
+ .arg("--unstable")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ assert_contains!(
+ read_line("error", &mut stderr_lines),
+ "Found 2 not formatted files in 2 files"
+ );
+
+ // Change content of the file again to be badly formatted
+ std::fs::copy(&badly_formatted_original, &badly_formatted_1).unwrap();
+
+ assert_contains!(
+ read_line("error", &mut stderr_lines),
+ "Found 2 not formatted files in 2 files"
+ );
+
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn bundle_js_watch() {
+ use std::path::PathBuf;
+ // Test strategy extends this of test bundle_js by adding watcher
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.ts");
+ write(&file_to_watch, "console.log('Hello world');").unwrap();
+ assert!(file_to_watch.is_file());
+ let t = TempDir::new();
+ let bundle = t.path().join("mod6.bundle.js");
+ let mut deno = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("bundle")
+ .arg(&file_to_watch)
+ .arg(&bundle)
+ .arg("--watch")
+ .arg("--unstable")
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+
+ 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, "Bundle started");
+ assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.ts");
+ assert_contains!(stderr_lines.next().unwrap(), "mod6.bundle.js");
+ let file = PathBuf::from(&bundle);
+ assert!(file.is_file());
+ wait_contains("Bundle finished", &mut stderr_lines);
+
+ write(&file_to_watch, "console.log('Hello world2');").unwrap();
+
+ assert_contains!(stderr_lines.next().unwrap(), "Check");
+ let next_line = stderr_lines.next().unwrap();
+ // Should not clear screen, as we are in non-TTY environment
+ assert_not_contains!(&next_line, CLEAR_SCREEN);
+ assert_contains!(&next_line, "File change detected!");
+ assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.ts");
+ assert_contains!(stderr_lines.next().unwrap(), "mod6.bundle.js");
+ let file = PathBuf::from(&bundle);
+ assert!(file.is_file());
+ wait_contains("Bundle finished", &mut stderr_lines);
+
+ // Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
+ write(&file_to_watch, "syntax error ^^").unwrap();
+
+ assert_contains!(stderr_lines.next().unwrap(), "File change detected!");
+ assert_contains!(stderr_lines.next().unwrap(), "error: ");
+ wait_contains("Bundle failed", &mut stderr_lines);
+ check_alive_then_kill(deno);
+}
+
+/// Confirm that the watcher continues to work even if module resolution fails at the *first* attempt
+#[test]
+fn bundle_watch_not_exit() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.ts");
+ write(&file_to_watch, "syntax error ^^").unwrap();
+ let target_file = t.path().join("target.js");
+
+ let mut deno = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("bundle")
+ .arg(&file_to_watch)
+ .arg(&target_file)
+ .arg("--watch")
+ .arg("--unstable")
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_stdout_lines, mut stderr_lines) = child_lines(&mut deno);
+
+ let next_line = stderr_lines.next().unwrap();
+ assert_contains!(&next_line, "Bundle started");
+ assert_contains!(stderr_lines.next().unwrap(), "error:");
+ assert_eq!(stderr_lines.next().unwrap(), "");
+ assert_eq!(stderr_lines.next().unwrap(), " syntax error ^^");
+ assert_eq!(stderr_lines.next().unwrap(), " ~~~~~");
+ assert_contains!(stderr_lines.next().unwrap(), "Bundle failed");
+ // the target file hasn't been created yet
+ assert!(!target_file.is_file());
+
+ // 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(), "Check");
+ let next_line = stderr_lines.next().unwrap();
+ // Should not clear screen, as we are in non-TTY environment
+ assert_not_contains!(&next_line, CLEAR_SCREEN);
+ assert_contains!(&next_line, "File change detected!");
+ assert_contains!(stderr_lines.next().unwrap(), "file_to_watch.ts");
+ assert_contains!(stderr_lines.next().unwrap(), "target.js");
+
+ wait_contains("Bundle finished", &mut stderr_lines);
+
+ // bundled file is created
+ assert!(target_file.is_file());
+ check_alive_then_kill(deno);
+}
+
+#[test]
+fn run_watch_no_dynamic() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(&file_to_watch, "console.log('Hello world');").unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg("-L")
+ .arg("debug")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ wait_contains("Hello world", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Change content of the file
+ write(&file_to_watch, "console.log('Hello world2');").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("Hello world2", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Add dependency
+ let another_file = t.path().join("another_file.js");
+ write(&another_file, "export const foo = 0;").unwrap();
+ write(
+ &file_to_watch,
+ "import { foo } from './another_file.js'; console.log(foo);",
+ )
+ .unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("0", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("another_file.js"),
+ &mut stderr_lines,
+ );
+
+ // Confirm that restarting occurs when a new file is updated
+ write(&another_file, "export const foo = 42;").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("42", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
+ write(&file_to_watch, "syntax error ^^").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("error:", &mut stderr_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Then restore the file
+ write(
+ &file_to_watch,
+ "import { foo } from './another_file.js'; console.log(foo);",
+ )
+ .unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("42", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("another_file.js"),
+ &mut stderr_lines,
+ );
+
+ // Update the content of the imported file with invalid syntax
+ write(&another_file, "syntax error ^^").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("error:", &mut stderr_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("another_file.js"),
+ &mut stderr_lines,
+ );
+
+ // Modify the imported file and make sure that restarting occurs
+ write(&another_file, "export const foo = 'modified!';").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("modified!", &mut stdout_lines);
+ wait_contains("Watching paths", &mut stderr_lines);
+ check_alive_then_kill(child);
+}
+
+// TODO(bartlomieju): this test became flaky on macOS runner; it is unclear
+// if that's because of a bug in code or the runner itself. We should reenable
+// it once we upgrade to XL runners for macOS.
+#[cfg(not(target_os = "macos"))]
+#[test]
+fn run_watch_external_watch_files() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(&file_to_watch, "console.log('Hello world');").unwrap();
+
+ let external_file_to_watch = t.path().join("external_file_to_watch.txt");
+ write(&external_file_to_watch, "Hello world").unwrap();
+
+ let mut watch_arg = "--watch=".to_owned();
+ let external_file_to_watch_str = external_file_to_watch
+ .clone()
+ .into_os_string()
+ .into_string()
+ .unwrap();
+ watch_arg.push_str(&external_file_to_watch_str);
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg(watch_arg)
+ .arg("-L")
+ .arg("debug")
+ .arg("--unstable")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+ wait_contains("Process started", &mut stderr_lines);
+ wait_contains("Hello world", &mut stdout_lines);
+ wait_for(
+ |m| {
+ m.contains("Watching paths") && m.contains("external_file_to_watch.txt")
+ },
+ &mut stderr_lines,
+ );
+
+ // Change content of the external file
+ write(&external_file_to_watch, "Hello world2").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("Process finished", &mut stderr_lines);
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn run_watch_load_unload_events() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(
+ &file_to_watch,
+ r#"
+ setInterval(() => {}, 0);
+ window.addEventListener("load", () => {
+ console.log("load");
+ });
+
+ window.addEventListener("unload", () => {
+ console.log("unload");
+ });
+ "#,
+ )
+ .unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg("-L")
+ .arg("debug")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ // Wait for the first load event to fire
+ wait_contains("load", &mut stdout_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Change content of the file, this time without an interval to keep it alive.
+ write(
+ &file_to_watch,
+ r#"
+ window.addEventListener("load", () => {
+ console.log("load");
+ });
+
+ window.addEventListener("unload", () => {
+ console.log("unload");
+ });
+ "#,
+ )
+ .unwrap();
+
+ // Wait for the restart
+ wait_contains("Restarting", &mut stderr_lines);
+
+ // Confirm that the unload event was dispatched from the first run
+ wait_contains("unload", &mut stdout_lines);
+
+ // Followed by the load event of the second run
+ wait_contains("load", &mut stdout_lines);
+
+ // Which is then unloaded as there is nothing keeping it alive.
+ wait_contains("unload", &mut stdout_lines);
+ check_alive_then_kill(child);
+}
+
+/// Confirm that the watcher continues to work even if module resolution fails at the *first* attempt
+#[test]
+fn run_watch_not_exit() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(&file_to_watch, "syntax error ^^").unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg("-L")
+ .arg("debug")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ wait_contains("Process started", &mut stderr_lines);
+ wait_contains("error:", &mut stderr_lines);
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("file_to_watch.js"),
+ &mut stderr_lines,
+ );
+
+ // Make sure the watcher actually restarts and works fine with the proper syntax
+ write(&file_to_watch, "console.log(42);").unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains("42", &mut stdout_lines);
+ wait_contains("Process finished", &mut stderr_lines);
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn run_watch_with_import_map_and_relative_paths() {
+ fn create_relative_tmp_file(
+ directory: &TempDir,
+ filename: &'static str,
+ filecontent: &'static str,
+ ) -> std::path::PathBuf {
+ let absolute_path = directory.path().join(filename);
+ write(&absolute_path, filecontent).unwrap();
+ let relative_path = absolute_path
+ .strip_prefix(util::testdata_path())
+ .unwrap()
+ .to_owned();
+ assert!(relative_path.is_relative());
+ relative_path
+ }
+ let temp_directory = TempDir::new_in(&util::testdata_path());
+ let file_to_watch = create_relative_tmp_file(
+ &temp_directory,
+ "file_to_watch.js",
+ "console.log('Hello world');",
+ );
+ let import_map_path = create_relative_tmp_file(
+ &temp_directory,
+ "import_map.json",
+ "{\"imports\": {}}",
+ );
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--unstable")
+ .arg("--watch")
+ .arg("--import-map")
+ .arg(&import_map_path)
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+ let next_line = stderr_lines.next().unwrap();
+ assert_contains!(&next_line, "Process started");
+ assert_contains!(stderr_lines.next().unwrap(), "Process finished");
+ assert_contains!(stdout_lines.next().unwrap(), "Hello world");
+
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn run_watch_error_messages() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(
+ &file_to_watch,
+ "throw SyntaxError(`outer`, {cause: TypeError(`inner`)})",
+ )
+ .unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_, mut stderr_lines) = child_lines(&mut child);
+
+ wait_contains("Process started", &mut stderr_lines);
+ wait_contains("error: Uncaught SyntaxError: outer", &mut stderr_lines);
+ wait_contains("Caused by: TypeError: inner", &mut stderr_lines);
+ wait_contains("Process finished", &mut stderr_lines);
+
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn test_watch() {
+ let t = TempDir::new();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("test")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg("--no-check")
+ .arg(t.path())
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ assert_eq!(stdout_lines.next().unwrap(), "");
+ assert_contains!(stdout_lines.next().unwrap(), "0 passed | 0 failed");
+ wait_contains("Test finished", &mut stderr_lines);
+
+ let foo_file = t.path().join("foo.js");
+ let bar_file = t.path().join("bar.js");
+ let foo_test = t.path().join("foo_test.js");
+ let bar_test = t.path().join("bar_test.js");
+ write(&foo_file, "export default function foo() { 1 + 1 }").unwrap();
+ write(&bar_file, "export default function bar() { 2 + 2 }").unwrap();
+ write(
+ &foo_test,
+ "import foo from './foo.js'; Deno.test('foo', foo);",
+ )
+ .unwrap();
+ write(
+ bar_test,
+ "import bar from './bar.js'; Deno.test('bar', bar);",
+ )
+ .unwrap();
+
+ assert_eq!(stdout_lines.next().unwrap(), "");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "foo", "bar");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "foo", "bar");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Change content of the file
+ write(
+ &foo_test,
+ "import foo from './foo.js'; Deno.test('foobar', foo);",
+ )
+ .unwrap();
+
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "foobar");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Add test
+ let another_test = t.path().join("new_test.js");
+ write(&another_test, "Deno.test('another one', () => 3 + 3)").unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "another one");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Confirm that restarting occurs when a new file is updated
+ write(&another_test, "Deno.test('another one', () => 3 + 3); Deno.test('another another one', () => 4 + 4)")
+ .unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 2 tests");
+ assert_contains!(stdout_lines.next().unwrap(), "another one");
+ assert_contains!(stdout_lines.next().unwrap(), "another another one");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
+ write(&another_test, "syntax error ^^").unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stderr_lines.next().unwrap(), "error:");
+ assert_eq!(stderr_lines.next().unwrap(), "");
+ assert_eq!(stderr_lines.next().unwrap(), " syntax error ^^");
+ assert_eq!(stderr_lines.next().unwrap(), " ~~~~~");
+ assert_contains!(stderr_lines.next().unwrap(), "Test failed");
+
+ // Then restore the file
+ write(&another_test, "Deno.test('another one', () => 3 + 3)").unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "another one");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Confirm that the watcher keeps on working even if the file is updated and the test fails
+ // This also confirms that it restarts when dependencies change
+ write(
+ &foo_file,
+ "export default function foo() { throw new Error('Whoops!'); }",
+ )
+ .unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "FAILED");
+ wait_for(|m| m.contains("FAILED"), &mut stdout_lines);
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Then restore the file
+ write(&foo_file, "export default function foo() { 1 + 1 }").unwrap();
+ assert_contains!(stderr_lines.next().unwrap(), "Restarting");
+ assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
+ assert_contains!(stdout_lines.next().unwrap(), "foo");
+ stdout_lines.next();
+ stdout_lines.next();
+ stdout_lines.next();
+ wait_contains("Test finished", &mut stderr_lines);
+
+ // Test that circular dependencies work fine
+ write(
+ &foo_file,
+ "import './bar.js'; export default function foo() { 1 + 1 }",
+ )
+ .unwrap();
+ write(
+ &bar_file,
+ "import './foo.js'; export default function bar() { 2 + 2 }",
+ )
+ .unwrap();
+ check_alive_then_kill(child);
+}
+
+#[flaky_test]
+fn test_watch_doc() {
+ let t = TempDir::new();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("test")
+ .arg("--watch")
+ .arg("--doc")
+ .arg("--unstable")
+ .arg(t.path())
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ assert_eq!(stdout_lines.next().unwrap(), "");
+ assert_contains!(stdout_lines.next().unwrap(), "0 passed | 0 failed");
+ wait_contains("Test finished", &mut stderr_lines);
+
+ let foo_file = t.path().join("foo.ts");
+ write(
+ &foo_file,
+ r#"
+ export default function foo() {}
+ "#,
+ )
+ .unwrap();
+
+ write(
+ &foo_file,
+ r#"
+ /**
+ * ```ts
+ * import foo from "./foo.ts";
+ * ```
+ */
+ export default function foo() {}
+ "#,
+ )
+ .unwrap();
+
+ // We only need to scan for a Check file://.../foo.ts$3-6 line that
+ // corresponds to the documentation block being type-checked.
+ assert_contains!(skip_restarting_line(&mut stderr_lines), "foo.ts$3-6");
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn test_watch_module_graph_error_referrer() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(&file_to_watch, "import './nonexistent.js';").unwrap();
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_, mut stderr_lines) = child_lines(&mut child);
+ let line1 = stderr_lines.next().unwrap();
+ assert_contains!(&line1, "Process started");
+ let line2 = stderr_lines.next().unwrap();
+ assert_contains!(&line2, "error: Module not found");
+ assert_contains!(&line2, "nonexistent.js");
+ let line3 = stderr_lines.next().unwrap();
+ assert_contains!(&line3, " at ");
+ assert_contains!(&line3, "file_to_watch.js");
+ wait_contains("Process finished", &mut stderr_lines);
+ check_alive_then_kill(child);
+}
+
+// Regression test for https://github.com/denoland/deno/issues/15428.
+#[test]
+fn test_watch_unload_handler_error_on_drop() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(
+ &file_to_watch,
+ r#"
+ addEventListener("unload", () => {
+ throw new Error("foo");
+ });
+ setTimeout(() => {
+ throw new Error("bar");
+ });
+ "#,
+ )
+ .unwrap();
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (_, mut stderr_lines) = child_lines(&mut child);
+ wait_contains("Process started", &mut stderr_lines);
+ wait_contains("Uncaught Error: bar", &mut stderr_lines);
+ wait_contains("Process finished", &mut stderr_lines);
+ check_alive_then_kill(child);
+}
+
+// Regression test for https://github.com/denoland/deno/issues/15465.
+#[test]
+fn run_watch_reload_once() {
+ let _g = util::http_server();
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ let file_content = r#"
+ import { time } from "http://localhost:4545/dynamic_module.ts";
+ console.log(time);
+ "#;
+ write(&file_to_watch, file_content).unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--reload")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ wait_contains("finished", &mut stderr_lines);
+ let first_output = stdout_lines.next().unwrap();
+
+ write(&file_to_watch, file_content).unwrap();
+ // The remote dynamic module should not have been reloaded again.
+
+ wait_contains("finished", &mut stderr_lines);
+ let second_output = stdout_lines.next().unwrap();
+ assert_eq!(second_output, first_output);
+
+ check_alive_then_kill(child);
+}
+
+#[test]
+fn run_watch_dynamic_imports() {
+ let t = TempDir::new();
+ let file_to_watch = t.path().join("file_to_watch.js");
+ write(
+ &file_to_watch,
+ r#"
+ console.log("Hopefully dynamic import will be watched...");
+ await import("./imported.js");
+ "#,
+ )
+ .unwrap();
+ let file_to_watch2 = t.path().join("imported.js");
+ write(
+ file_to_watch2,
+ r#"
+ import "./imported2.js";
+ console.log("I'm dynamically imported and I cause restarts!");
+ "#,
+ )
+ .unwrap();
+ let file_to_watch3 = t.path().join("imported2.js");
+ write(
+ &file_to_watch3,
+ r#"
+ console.log("I'm statically imported from the dynamic import");
+ "#,
+ )
+ .unwrap();
+
+ let mut child = util::deno_cmd()
+ .current_dir(util::testdata_path())
+ .arg("run")
+ .arg("--watch")
+ .arg("--unstable")
+ .arg("--allow-read")
+ .arg("-L")
+ .arg("debug")
+ .arg(&file_to_watch)
+ .env("NO_COLOR", "1")
+ .stdout(std::process::Stdio::piped())
+ .stderr(std::process::Stdio::piped())
+ .spawn()
+ .unwrap();
+ let (mut stdout_lines, mut stderr_lines) = child_lines(&mut child);
+
+ assert_contains!(stderr_lines.next().unwrap(), "Process started");
+
+ wait_contains(
+ "Hopefully dynamic import will be watched...",
+ &mut stdout_lines,
+ );
+ wait_contains(
+ "I'm statically imported from the dynamic import",
+ &mut stdout_lines,
+ );
+ wait_contains(
+ "I'm dynamically imported and I cause restarts!",
+ &mut stdout_lines,
+ );
+
+ wait_for(
+ |m| m.contains("Watching paths") && m.contains("imported2.js"),
+ &mut stderr_lines,
+ );
+ wait_contains("finished", &mut stderr_lines);
+
+ write(
+ &file_to_watch3,
+ r#"
+ console.log("I'm statically imported from the dynamic import and I've changed");
+ "#,
+ )
+ .unwrap();
+
+ wait_contains("Restarting", &mut stderr_lines);
+ wait_contains(
+ "Hopefully dynamic import will be watched...",
+ &mut stdout_lines,
+ );
+ wait_contains(
+ "I'm statically imported from the dynamic import and I've changed",
+ &mut stdout_lines,
+ );
+ wait_contains(
+ "I'm dynamically imported and I cause restarts!",
+ &mut stdout_lines,
+ );
+
+ check_alive_then_kill(child);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-25 19:50:19 +0000