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feat: add deno test --watch (#9160)

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This commit implements file watching for deno test.

When a file is changed, only the test modules which 
use it as a dependency are rerun.

This is accomplished by reworking the file watching infrastructure 
to pass the paths which have changed to the resolver, and then 
constructing a module graph for each test module to check if it 
contains any changed files.
This commit is contained in:
Liam Murphy 2021-05-10 16:06:13 +10:00 committed by GitHub
parent 84733d90c7
commit 7a9ebd1585
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 581 additions and 237 deletions
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263
cli/file_watcher.rs
View file

@ -2,7 +2,6 @@
use crate::colors;
use deno_core::error::AnyError;
use deno_core::futures::ready;
use deno_core::futures::stream::{Stream, StreamExt};
use deno_core::futures::Future;
use log::info;
@ -14,10 +13,11 @@ use notify::RecommendedWatcher;
use notify::RecursiveMode;
use notify::Watcher;
use pin_project::pin_project;
use std::collections::HashSet;
use std::path::PathBuf;
use std::pin::Pin;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::sync::Mutex;
use std::task::Context;
use std::task::Poll;
use std::time::Duration;
@ -29,26 +29,24 @@ use tokio::time::Sleep;
const DEBOUNCE_INTERVAL: Duration = Duration::from_millis(200);
type FileWatcherFuture<T> = Pin<Box<dyn Future<Output = T>>>;
#[pin_project(project = DebounceProjection)]
struct Debounce {
#[pin]
timer: Sleep,
event_detected: Arc<AtomicBool>,
changed_paths: Arc<Mutex<HashSet<PathBuf>>>,
}
impl Debounce {
fn new() -> Self {
Self {
timer: sleep(DEBOUNCE_INTERVAL),
event_detected: Arc::new(AtomicBool::new(false)),
changed_paths: Arc::new(Mutex::new(HashSet::new())),
}
}
}
impl Stream for Debounce {
type Item = ();
type Item = Vec<PathBuf>;
/// Note that this never returns `Poll::Ready(None)`, which means that the
/// file watcher will be alive until the Deno process is terminated.
@ -56,18 +54,24 @@ impl Stream for Debounce {
self: Pin<&mut Self>,
cx: &mut Context,
) -> Poll<Option<Self::Item>> {
if self.event_detected.swap(false, Ordering::Relaxed) {
Poll::Ready(Some(()))
let mut changed_paths = self.changed_paths.lock().unwrap();
if changed_paths.len() > 0 {
Poll::Ready(Some(changed_paths.drain().collect()))
} else {
drop(changed_paths);
let mut timer = self.project().timer;
ready!(timer.as_mut().poll(cx));
timer.reset(Instant::now() + DEBOUNCE_INTERVAL);
if timer.as_mut().poll(cx).is_ready() {
timer.reset(Instant::now() + DEBOUNCE_INTERVAL);
}
Poll::Pending
}
}
}
async fn error_handler(watch_future: FileWatcherFuture<Result<(), AnyError>>) {
async fn error_handler<F>(watch_future: F)
where
F: Future<Output = Result<(), AnyError>>,
{
let result = watch_future.await;
if let Err(err) = result {
let msg = format!("{}: {}", colors::red_bold("error"), err.to_string(),);
@ -75,172 +79,139 @@ async fn error_handler(watch_future: FileWatcherFuture<Result<(), AnyError>>) {
}
}
/// This function adds watcher functionality to subcommands like `fmt` or `lint`.
/// The difference from [`watch_func_with_module_resolution`] is that this doesn't depend on
/// [`ModuleGraph`].
///
/// - `target_resolver` is used for resolving file paths to be watched at every restarting of the watcher. The
/// return value of this closure will then be passed to `operation` as an argument.
///
/// - `operation` is the actual operation we want to run every time the watcher detects file
/// changes. For example, in the case where we would like to apply `fmt`, then `operation` would
/// have the logic for it like calling `format_source_files`.
///
/// - `job_name` is just used for printing watcher status to terminal.
///
/// Note that the watcher will stop working if `target_resolver` fails at some point.
///
/// [`ModuleGraph`]: crate::module_graph::Graph
pub async fn watch_func<F, G>(
target_resolver: F,
operation: G,
job_name: &str,
) -> Result<(), AnyError>
where
F: Fn() -> Result<Vec<PathBuf>, AnyError>,
G: Fn(Vec<PathBuf>) -> FileWatcherFuture<Result<(), AnyError>>,
{
let debounce = Debounce::new();
pin!(debounce);
pub enum ResolutionResult<T> {
Restart {
paths_to_watch: Vec<PathBuf>,
result: Result<T, AnyError>,
},
Ignore,
}
async fn next_restart<R, T, F>(
resolver: &mut R,
debounce: &mut Pin<&mut Debounce>,
) -> (Vec<PathBuf>, Result<T, AnyError>)
where
R: FnMut(Option<Vec<PathBuf>>) -> F,
F: Future<Output = ResolutionResult<T>>,
{
loop {
let paths = target_resolver()?;
let _watcher = new_watcher(&paths, &debounce)?;
let func = error_handler(operation(paths));
let mut is_file_changed = false;
select! {
_ = debounce.next() => {
is_file_changed = true;
let changed = debounce.next().await;
match resolver(changed).await {
ResolutionResult::Ignore => {
log::debug!("File change ignored")
}
ResolutionResult::Restart {
paths_to_watch,
result,
} => {
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
},
_ = func => {},
};
if !is_file_changed {
info!(
"{} {} finished! Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
debounce.next().await;
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
return (paths_to_watch, result);
}
}
}
}
pub enum ModuleResolutionResult<T> {
Success {
paths_to_watch: Vec<PathBuf>,
module_info: T,
},
Fail {
source_path: PathBuf,
error: AnyError,
},
}
/// This function adds watcher functionality to subcommands like `run` or `bundle`.
/// The difference from [`watch_func`] is that this does depend on [`ModuleGraph`].
/// Creates a file watcher, which will call `resolver` with every file change.
///
/// - `module_resolver` is used for both resolving file paths to be watched at every restarting
/// of the watcher and building [`ModuleGraph`] or [`ModuleSpecifier`] which will then be passed
/// to `operation`.
/// - `resolver` is used for resolving file paths to be watched at every restarting
/// of the watcher, and can also return a value to be passed to `operation`.
/// It returns a [`ResolutionResult`], which can either instruct the watcher to restart or ignore the change.
/// This always contains paths to watch;
///
/// - `operation` is the actual operation we want to run every time the watcher detects file
/// changes. For example, in the case where we would like to bundle, then `operation` would
/// have the logic for it like doing bundle with the help of [`ModuleGraph`].
/// have the logic for it like bundling the code.
///
/// - `job_name` is just used for printing watcher status to terminal.
///
/// Note that the watcher will try to continue watching files using the previously resolved
/// data if `module_resolver` fails at some point, which means the watcher won't work at all
/// if `module_resolver` fails at the first attempt.
///
/// [`ModuleGraph`]: crate::module_graph::Graph
/// [`ModuleSpecifier`]: deno_core::ModuleSpecifier
pub async fn watch_func_with_module_resolution<F, G, T>(
module_resolver: F,
operation: G,
pub async fn watch_func<R, O, T, F1, F2>(
mut resolver: R,
mut operation: O,
job_name: &str,
) -> Result<(), AnyError>
where
F: Fn() -> FileWatcherFuture<ModuleResolutionResult<T>>,
G: Fn(T) -> FileWatcherFuture<Result<(), AnyError>>,
T: Clone,
R: FnMut(Option<Vec<PathBuf>>) -> F1,
O: FnMut(T) -> F2,
F1: Future<Output = ResolutionResult<T>>,
F2: Future<Output = Result<(), AnyError>>,
{
let debounce = Debounce::new();
pin!(debounce);
// Store previous data. If module resolution fails at some point, the watcher will try to
// continue watching files using these data.
let mut paths = Vec::new();
let mut module = None;
let mut paths_to_watch;
let mut resolution_result;
match resolver(None).await {
ResolutionResult::Ignore => {
// The only situation where it makes sense to ignore the initial 'change'
// is if the command isn't supposed to do anything until something changes,
// e.g. a variant of `deno test` which doesn't run the entire test suite to start with,
// but instead does nothing until you make a change.
//
// In that case, this is probably the correct output.
info!(
"{} Waiting for file changes...",
colors::intense_blue("Watcher"),
);
let (paths, result) = next_restart(&mut resolver, &mut debounce).await;
paths_to_watch = paths;
resolution_result = result;
}
ResolutionResult::Restart {
paths_to_watch: paths,
result,
} => {
paths_to_watch = paths;
resolution_result = result;
}
};
loop {
match module_resolver().await {
ModuleResolutionResult::Success {
paths_to_watch,
module_info,
} => {
paths = paths_to_watch;
module = Some(module_info);
}
ModuleResolutionResult::Fail { source_path, error } => {
if paths.is_empty() {
paths = vec![source_path];
}
let watcher = new_watcher(&paths_to_watch, &debounce)?;
if module.is_none() {
eprintln!("{}: {}", colors::red_bold("error"), error);
}
}
}
let _watcher = new_watcher(&paths, &debounce)?;
match resolution_result {
Ok(operation_arg) => {
let fut = error_handler(operation(operation_arg));
select! {
(paths, result) = next_restart(&mut resolver, &mut debounce) => {
if result.is_ok() {
paths_to_watch = paths;
}
resolution_result = result;
continue;
},
_ = fut => {},
};
if let Some(module) = &module {
let func = error_handler(operation(module.clone()));
let mut is_file_changed = false;
select! {
_ = debounce.next() => {
is_file_changed = true;
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
},
_ = func => {},
};
if !is_file_changed {
info!(
"{} {} finished! Restarting on file change...",
"{} {} finished. Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
debounce.next().await;
}
Err(error) => {
eprintln!("{}: {}", colors::red_bold("error"), error);
info!(
"{} File change detected! Restarting!",
"{} {} failed. Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
}
} else {
info!(
"{} {} failed! Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
debounce.next().await;
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
}
let (paths, result) = next_restart(&mut resolver, &mut debounce).await;
if result.is_ok() {
paths_to_watch = paths;
}
resolution_result = result;
drop(watcher);
}
}
@ -248,7 +219,7 @@ fn new_watcher(
paths: &[PathBuf],
debounce: &Debounce,
) -> Result<RecommendedWatcher, AnyError> {
let event_detected = Arc::clone(&debounce.event_detected);
let changed_paths = Arc::clone(&debounce.changed_paths);
let mut watcher: RecommendedWatcher =
Watcher::new_immediate(move |res: Result<NotifyEvent, NotifyError>| {
@ -257,16 +228,22 @@ fn new_watcher(
event.kind,
EventKind::Create(_) | EventKind::Modify(_) | EventKind::Remove(_)
) {
event_detected.store(true, Ordering::Relaxed);
let paths = event
.paths
.iter()
.filter_map(|path| path.canonicalize().ok());
let mut changed_paths = changed_paths.lock().unwrap();
changed_paths.extend(paths);
}
}
})?;
watcher.configure(Config::PreciseEvents(true)).unwrap();
log::debug!("Watching paths: {:?}", paths);
for path in paths {
// Ignore any error e.g. `PathNotFound`
let _ = watcher.watch(path, RecursiveMode::NonRecursive);
let _ = watcher.watch(path, RecursiveMode::Recursive);
}
Ok(watcher)

7
cli/flags.rs
View file

@ -1031,6 +1031,11 @@ fn test_subcommand<'a, 'b>() -> App<'a, 'b> {
.takes_value(true)
.multiple(true),
)
.arg(
watch_arg()
.conflicts_with("no-run")
.conflicts_with("coverage"),
)
.arg(script_arg().last(true))
.about("Run tests")
.long_about(
@ -1667,6 +1672,8 @@ fn test_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
let quiet = matches.is_present("quiet");
let filter = matches.value_of("filter").map(String::from);
flags.watch = matches.is_present("watch");
if matches.is_present("script_arg") {
let script_arg: Vec<String> = matches
.values_of("script_arg")

258
cli/main.rs
View file

@ -38,11 +38,13 @@ mod unix_util;
mod version;
use crate::file_fetcher::File;
use crate::file_watcher::ModuleResolutionResult;
use crate::file_watcher::ResolutionResult;
use crate::flags::DenoSubcommand;
use crate::flags::Flags;
use crate::fmt_errors::PrettyJsError;
use crate::media_type::MediaType;
use crate::module_graph::GraphBuilder;
use crate::module_graph::Module;
use crate::module_loader::CliModuleLoader;
use crate::program_state::ProgramState;
use crate::source_maps::apply_source_map;
@ -67,6 +69,7 @@ use log::debug;
use log::info;
use log::Level;
use log::LevelFilter;
use std::collections::HashSet;
use std::env;
use std::io::Read;
use std::io::Write;
@ -76,6 +79,7 @@ use std::pin::Pin;
use std::rc::Rc;
use std::sync::Arc;
use std::sync::Mutex;
use tools::test_runner;
fn create_web_worker_callback(
program_state: Arc<ProgramState>,
@ -595,7 +599,7 @@ async fn bundle_command(
) -> Result<(), AnyError> {
let debug = flags.log_level == Some(log::Level::Debug);
let module_resolver = || {
let resolver = |_| {
let flags = flags.clone();
let source_file1 = source_file.clone();
let source_file2 = source_file.clone();
@ -605,12 +609,6 @@ async fn bundle_command(
debug!(">>>>> bundle START");
let program_state = ProgramState::build(flags.clone()).await?;
info!(
"{} {}",
colors::green("Bundle"),
module_specifier.to_string()
);
let module_graph = create_module_graph_and_maybe_check(
module_specifier,
program_state.clone(),
@ -632,22 +630,23 @@ async fn bundle_command(
Ok((paths_to_watch, module_graph))
}
.map(move |result| match result {
Ok((paths_to_watch, module_graph)) => ModuleResolutionResult::Success {
Ok((paths_to_watch, module_graph)) => ResolutionResult::Restart {
paths_to_watch,
module_info: module_graph,
result: Ok(module_graph),
},
Err(e) => ModuleResolutionResult::Fail {
source_path: PathBuf::from(source_file2),
error: e,
Err(e) => ResolutionResult::Restart {
paths_to_watch: vec![PathBuf::from(source_file2)],
result: Err(e),
},
})
.boxed_local()
};
let operation = |module_graph: module_graph::Graph| {
let flags = flags.clone();
let out_file = out_file.clone();
async move {
info!("{} {}", colors::green("Bundle"), module_graph.info()?.root);
let output = bundle_module_graph(module_graph, flags, debug)?;
debug!(">>>>> bundle END");
@ -668,21 +667,17 @@ async fn bundle_command(
Ok(())
}
.boxed_local()
};
if flags.watch {
file_watcher::watch_func_with_module_resolution(
module_resolver,
operation,
"Bundle",
)
.await?;
file_watcher::watch_func(resolver, operation, "Bundle").await?;
} else {
let module_graph = match module_resolver().await {
ModuleResolutionResult::Fail { error, .. } => return Err(error),
ModuleResolutionResult::Success { module_info, .. } => module_info,
};
let module_graph =
if let ResolutionResult::Restart { result, .. } = resolver(None).await {
result?
} else {
unreachable!();
};
operation(module_graph).await?;
}
@ -759,7 +754,7 @@ async fn run_from_stdin(flags: Flags) -> Result<(), AnyError> {
}
async fn run_with_watch(flags: Flags, script: String) -> Result<(), AnyError> {
let module_resolver = || {
let resolver = |_| {
let script1 = script.clone();
let script2 = script.clone();
let flags = flags.clone();
@ -793,16 +788,15 @@ async fn run_with_watch(flags: Flags, script: String) -> Result<(), AnyError> {
Ok((paths_to_watch, main_module))
}
.map(move |result| match result {
Ok((paths_to_watch, module_info)) => ModuleResolutionResult::Success {
Ok((paths_to_watch, module_info)) => ResolutionResult::Restart {
paths_to_watch,
module_info,
result: Ok(module_info),
},
Err(e) => ModuleResolutionResult::Fail {
source_path: PathBuf::from(script2),
error: e,
Err(e) => ResolutionResult::Restart {
paths_to_watch: vec![PathBuf::from(script2)],
result: Err(e),
},
})
.boxed_local()
};
let operation = |main_module: ModuleSpecifier| {
@ -824,15 +818,9 @@ async fn run_with_watch(flags: Flags, script: String) -> Result<(), AnyError> {
worker.execute("window.dispatchEvent(new Event('unload'))")?;
Ok(())
}
.boxed_local()
};
file_watcher::watch_func_with_module_resolution(
module_resolver,
operation,
"Process",
)
.await
file_watcher::watch_func(resolver, operation, "Process").await
}
async fn run_command(flags: Flags, script: String) -> Result<(), AnyError> {
@ -917,17 +905,187 @@ async fn test_command(
env::set_var("DENO_UNSTABLE_COVERAGE_DIR", coverage_dir);
}
tools::test_runner::run_tests(
flags,
include,
no_run,
fail_fast,
quiet,
allow_none,
filter,
concurrent_jobs,
)
.await?;
let program_state = ProgramState::build(flags.clone()).await?;
let include = include.unwrap_or_else(|| vec![".".to_string()]);
let cwd = std::env::current_dir().expect("No current directory");
let permissions = Permissions::from_options(&flags.clone().into());
let lib = if flags.unstable {
module_graph::TypeLib::UnstableDenoWindow
} else {
module_graph::TypeLib::DenoWindow
};
if flags.watch {
let handler = Arc::new(Mutex::new(FetchHandler::new(
&program_state,
Permissions::allow_all(),
)?));
let paths_to_watch: Vec<_> = include.iter().map(PathBuf::from).collect();
let resolver = |changed: Option<Vec<PathBuf>>| {
let test_modules_result =
test_runner::collect_test_module_specifiers(include.clone(), &cwd);
let paths_to_watch = paths_to_watch.clone();
let paths_to_watch_clone = paths_to_watch.clone();
let handler = handler.clone();
let program_state = program_state.clone();
let files_changed = changed.is_some();
async move {
let test_modules = test_modules_result?;
let mut paths_to_watch = paths_to_watch_clone;
let mut modules_to_reload = if files_changed {
Vec::new()
} else {
test_modules
.iter()
.filter_map(|url| deno_core::resolve_url(url.as_str()).ok())
.collect()
};
let mut builder = GraphBuilder::new(
handler,
program_state.maybe_import_map.clone(),
program_state.lockfile.clone(),
);
for specifier in test_modules.iter() {
builder.add(specifier, false).await?;
}
let graph = builder.get_graph();
for specifier in test_modules {
fn get_dependencies<'a>(
graph: &'a module_graph::Graph,
module: &'a Module,
// This needs to be accessible to skip getting dependencies if they're already there,
// otherwise this will cause a stack overflow with circular dependencies
output: &mut HashSet<&'a ModuleSpecifier>,
) -> Result<(), AnyError> {
for dep in module.dependencies.values() {
if let Some(specifier) = &dep.maybe_code {
if !output.contains(specifier) {
output.insert(specifier);
get_dependencies(
&graph,
graph.get_specifier(specifier)?,
output,
)?;
}
}
if let Some(specifier) = &dep.maybe_type {
if !output.contains(specifier) {
output.insert(specifier);
get_dependencies(
&graph,
graph.get_specifier(specifier)?,
output,
)?;
}
}
}
Ok(())
}
// This test module and all it's dependencies
let mut modules = HashSet::new();
modules.insert(&specifier);
get_dependencies(
&graph,
graph.get_specifier(&specifier)?,
&mut modules,
)?;
paths_to_watch.extend(
modules
.iter()
.filter_map(|specifier| specifier.to_file_path().ok()),
);
if let Some(changed) = &changed {
for path in changed.iter().filter_map(|path| {
deno_core::resolve_url_or_path(&path.to_string_lossy()).ok()
}) {
if modules.contains(&&path) {
modules_to_reload.push(specifier);
break;
}
}
}
}
Ok((paths_to_watch, modules_to_reload))
}
.map(move |result| {
if files_changed
&& matches!(result, Ok((_, ref modules)) if modules.is_empty())
{
ResolutionResult::Ignore
} else {
match result {
Ok((paths_to_watch, modules_to_reload)) => {
ResolutionResult::Restart {
paths_to_watch,
result: Ok(modules_to_reload),
}
}
Err(e) => ResolutionResult::Restart {
paths_to_watch,
result: Err(e),
},
}
}
})
};
file_watcher::watch_func(
resolver,
|modules_to_reload| {
test_runner::run_tests(
program_state.clone(),
permissions.clone(),
lib.clone(),
modules_to_reload,
no_run,
fail_fast,
quiet,
true,
filter.clone(),
concurrent_jobs,
)
.map(|res| res.map(|_| ()))
},
"Test",
)
.await?;
} else {
let test_modules =
test_runner::collect_test_module_specifiers(include, &cwd)?;
let failed = test_runner::run_tests(
program_state.clone(),
permissions,
lib,
test_modules,
no_run,
fail_fast,
quiet,
allow_none,
filter,
concurrent_jobs,
)
.await?;
if failed {
std::process::exit(1);
}
}
Ok(())
}

12
cli/module_graph.rs
View file

@ -1248,6 +1248,18 @@ impl Graph {
self.modules.get_mut(s)
}
pub fn get_specifier(
&self,
specifier: &ModuleSpecifier,
) -> Result<&Module, AnyError> {
let s = self.resolve_specifier(specifier);
match self.get_module(s) {
ModuleSlot::Module(m) => Ok(m.as_ref()),
ModuleSlot::Err(e) => Err(anyhow!(e.to_string())),
_ => Err(GraphError::MissingSpecifier(specifier.clone()).into()),
}
}
/// Consume graph and return list of all module specifiers contained in the
/// graph.
pub fn get_modules(&self) -> Vec<ModuleSpecifier> {

200
cli/tests/integration_tests.rs
View file

@ -617,6 +617,21 @@ mod integration {
}
}
/// Helper function to skip watcher output that doesn't contain
/// "{job_name} failed" phrase.
fn wait_for_process_failed(
job_name: &str,
stderr_lines: &mut impl Iterator<Item = String>,
) {
let phrase = format!("{} failed", job_name);
loop {
let msg = stderr_lines.next().unwrap();
if msg.contains(&phrase) {
break;
}
}
}
#[test]
fn fmt_watch_test() {
let t = TempDir::new().expect("tempdir fail");
@ -685,6 +700,7 @@ mod integration {
.arg(&bundle)
.arg("--watch")
.arg("--unstable")
.env("NO_COLOR", "1")
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.spawn()
@ -722,11 +738,8 @@ mod integration {
.next()
.unwrap()
.contains("File change detected!"));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("mod6.bundle.js"));
let file = PathBuf::from(&bundle);
assert!(file.is_file());
wait_for_process_finished("Bundle", &mut stderr_lines);
assert!(stderr_lines.next().unwrap().contains("error: "));
wait_for_process_failed("Bundle", &mut stderr_lines);
// the watcher process is still alive
assert!(deno.try_wait().unwrap().is_none());
@ -762,9 +775,8 @@ mod integration {
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(stderr_lines.next().unwrap().contains("Bundle failed!"));
assert!(stderr_lines.next().unwrap().contains("Bundle failed"));
// the target file hasn't been created yet
assert!(!target_file.is_file());
@ -858,7 +870,7 @@ mod integration {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stderr_lines.next().unwrap().contains("error:"));
wait_for_process_finished("Process", &mut stderr_lines);
wait_for_process_failed("Process", &mut stderr_lines);
// Then restore the file
std::fs::write(
@ -877,7 +889,7 @@ mod integration {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stderr_lines.next().unwrap().contains("error:"));
wait_for_process_finished("Process", &mut stderr_lines);
wait_for_process_failed("Process", &mut stderr_lines);
// Modify the imported file and make sure that restarting occurs
std::fs::write(&another_file, "export const foo = 'modified!';")
@ -923,7 +935,7 @@ mod integration {
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(stderr_lines.next().unwrap().contains("Process failed!"));
assert!(stderr_lines.next().unwrap().contains("Process failed"));
// Make sure the watcher actually restarts and works fine with the proper syntax
std::fs::write(&file_to_watch, "console.log(42);")
@ -999,6 +1011,174 @@ mod integration {
drop(import_map_path);
temp_directory.close().unwrap();
}
#[test]
fn test_watch() {
macro_rules! assert_contains {
($string:expr, $($test:expr),+) => {
let string = $string; // This might be a function call or something
if !($(string.contains($test))||+) {
panic!("{:?} does not contain any of {:?}", string, [$($test),+]);
}
}
}
let t = TempDir::new().expect("tempdir fail");
let mut child = util::deno_cmd()
.current_dir(util::root_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()
.expect("failed to spawn script");
let stdout = child.stdout.as_mut().unwrap();
let mut stdout_lines =
std::io::BufReader::new(stdout).lines().map(|r| r.unwrap());
let stderr = child.stderr.as_mut().unwrap();
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
assert_contains!(
stdout_lines.next().unwrap(),
"No matching test modules found"
);
wait_for_process_finished("Test", &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");
std::fs::write(&foo_file, "export default function foo() { 1 + 1 }")
.expect("error writing file");
std::fs::write(&bar_file, "export default function bar() { 2 + 2 }")
.expect("error writing file");
std::fs::write(
&foo_test,
"import foo from './foo.js'; Deno.test('foo', foo);",
)
.expect("error writing file");
std::fs::write(
&bar_test,
"import bar from './bar.js'; Deno.test('bar', bar);",
)
.expect("error writing file");
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_for_process_finished("Test", &mut stderr_lines);
// Change content of the file
std::fs::write(
&foo_test,
"import foo from './foo.js'; Deno.test('foobar', foo);",
)
.expect("error writing file");
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_for_process_finished("Test", &mut stderr_lines);
// Add test
let another_test = t.path().join("new_test.js");
std::fs::write(&another_test, "Deno.test('another one', () => 3 + 3)")
.expect("error writing file");
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_for_process_finished("Test", &mut stderr_lines);
// Confirm that restarting occurs when a new file is updated
std::fs::write(&another_test, "Deno.test('another one', () => 3 + 3); Deno.test('another another one', () => 4 + 4)")
.expect("error writing file");
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_for_process_finished("Test", &mut stderr_lines);
// Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
std::fs::write(&another_test, "syntax error ^^")
.expect("error writing file");
assert_contains!(stderr_lines.next().unwrap(), "Restarting");
assert_contains!(stderr_lines.next().unwrap(), "error:");
assert_contains!(stderr_lines.next().unwrap(), "Test failed");
// Then restore the file
std::fs::write(&another_test, "Deno.test('another one', () => 3 + 3)")
.expect("error writing file");
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_for_process_finished("Test", &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
std::fs::write(
&foo_file,
"export default function foo() { throw new Error('Whoops!'); }",
)
.expect("error writing file");
assert_contains!(stderr_lines.next().unwrap(), "Restarting");
assert_contains!(stdout_lines.next().unwrap(), "running 1 test");
assert_contains!(stdout_lines.next().unwrap(), "FAILED");
while !stdout_lines.next().unwrap().contains("test result") {}
stdout_lines.next();
wait_for_process_finished("Test", &mut stderr_lines);
// Then restore the file
std::fs::write(&foo_file, "export default function foo() { 1 + 1 }")
.expect("error writing file");
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_for_process_finished("Test", &mut stderr_lines);
// Test that circular dependencies work fine
std::fs::write(
&foo_file,
"import './bar.js'; export default function foo() { 1 + 1 }",
)
.expect("error writing file");
std::fs::write(
&bar_file,
"import './foo.js'; export default function bar() { 2 + 2 }",
)
.expect("error writing file");
// the watcher process is still alive
assert!(child.try_wait().unwrap().is_none());
child.kill().unwrap();
drop(t);
}
}
#[test]

44
cli/tools/fmt.rs
View file

@ -10,12 +10,12 @@
use crate::colors;
use crate::diff::diff;
use crate::file_watcher;
use crate::file_watcher::ResolutionResult;
use crate::fs_util::{collect_files, get_extension, is_supported_ext_fmt};
use crate::text_encoding;
use deno_core::error::generic_error;
use deno_core::error::AnyError;
use deno_core::futures;
use deno_core::futures::FutureExt;
use log::debug;
use log::info;
use std::fs;
@ -37,15 +37,32 @@ pub async fn format(
check: bool,
watch: bool,
) -> Result<(), AnyError> {
let target_file_resolver = || {
// collect the files that are to be formatted
collect_files(&args, &ignore, is_supported_ext_fmt).and_then(|files| {
if files.is_empty() {
Err(generic_error("No target files found."))
let resolver = |changed: Option<Vec<PathBuf>>| {
let files_changed = changed.is_some();
let result =
collect_files(&args, &ignore, is_supported_ext_fmt).map(|files| {
if let Some(paths) = changed {
files
.into_iter()
.filter(|path| paths.contains(path))
.collect::<Vec<_>>()
} else {
files
}
});
let paths_to_watch = args.clone();
async move {
if (files_changed || !watch)
&& matches!(result, Ok(ref files) if files.is_empty())
{
ResolutionResult::Ignore
} else {
Ok(files)
ResolutionResult::Restart {
paths_to_watch,
result,
}
}
})
}
};
let operation = |paths: Vec<PathBuf>| {
let config = get_typescript_config();
@ -57,13 +74,18 @@ pub async fn format(
}
Ok(())
}
.boxed_local()
};
if watch {
file_watcher::watch_func(target_file_resolver, operation, "Fmt").await?;
file_watcher::watch_func(resolver, operation, "Fmt").await?;
} else {
operation(target_file_resolver()?).await?;
let files =
if let ResolutionResult::Restart { result, .. } = resolver(None).await {
result?
} else {
return Err(generic_error("No target files found."));
};
operation(files).await?;
}
Ok(())

34
cli/tools/test_runner.rs
View file

@ -3,7 +3,6 @@
use crate::colors;
use crate::create_main_worker;
use crate::file_fetcher::File;
use crate::flags::Flags;
use crate::fs_util;
use crate::media_type::MediaType;
use crate::module_graph;
@ -304,37 +303,30 @@ pub async fn run_test_file(
Ok(())
}
/// Runs tests.
///
/// Returns a boolean indicating whether the tests failed.
#[allow(clippy::too_many_arguments)]
pub async fn run_tests(
flags: Flags,
include: Option<Vec<String>>,
program_state: Arc<ProgramState>,
permissions: Permissions,
lib: module_graph::TypeLib,
test_modules: Vec<ModuleSpecifier>,
no_run: bool,
fail_fast: bool,
quiet: bool,
allow_none: bool,
filter: Option<String>,
concurrent_jobs: usize,
) -> Result<(), AnyError> {
let program_state = ProgramState::build(flags.clone()).await?;
let permissions = Permissions::from_options(&flags.clone().into());
let cwd = std::env::current_dir().expect("No current directory");
let include = include.unwrap_or_else(|| vec![".".to_string()]);
let test_modules = collect_test_module_specifiers(include, &cwd)?;
) -> Result<bool, AnyError> {
if test_modules.is_empty() {
println!("No matching test modules found");
if !allow_none {
std::process::exit(1);
}
return Ok(());
return Ok(false);
}
let lib = if flags.unstable {
module_graph::TypeLib::UnstableDenoWindow
} else {
module_graph::TypeLib::DenoWindow
};
program_state
.prepare_module_graph(
test_modules.clone(),
@ -345,7 +337,7 @@ pub async fn run_tests(
.await?;
if no_run {
return Ok(());
return Ok(false);
}
// Because scripts, and therefore worker.execute cannot detect unresolved promises at the moment
@ -475,11 +467,7 @@ pub async fn run_tests(
if let Some(e) = join_errors.next() {
Err(e)
} else {
if result.unwrap_or(false) {
std::process::exit(1);
}
Ok(())
Ok(result.unwrap_or(false))
}
}