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use std::{collections::HashSet, fs, time::Duration};
// use flexi_logger::Logger;
use crossbeam_channel::RecvTimeoutError;
use ra_vfs::{Vfs, VfsChange};
use tempfile::tempdir;
fn process_tasks(vfs: &mut Vfs, num_tasks: u32) {
for _ in 0..num_tasks {
let task = vfs.task_receiver().recv_timeout(Duration::from_secs(3)).unwrap();
log::debug!("{:?}", task);
vfs.handle_task(task);
}
}
macro_rules! assert_match {
($x:expr, $pat:pat) => {
assert_match!($x, $pat, ())
};
($x:expr, $pat:pat, $assert:expr) => {
match $x {
$pat => $assert,
x => assert!(false, "Expected {}, got {:?}", stringify!($pat), x),
};
};
}
#[test]
fn test_vfs_works() -> std::io::Result<()> {
// Logger::with_str("vfs=debug,ra_vfs=debug").start().unwrap();
let files = [("a/foo.rs", "hello"), ("a/bar.rs", "world"), ("a/b/baz.rs", "nested hello")];
let dir = tempdir().unwrap();
for (path, text) in files.iter() {
let file_path = dir.path().join(path);
fs::create_dir_all(file_path.parent().unwrap()).unwrap();
fs::write(file_path, text)?
}
let a_root = dir.path().join("a");
let b_root = dir.path().join("a/b");
let (mut vfs, _) = Vfs::new(vec![a_root, b_root]);
process_tasks(&mut vfs, 2);
{
let files = vfs
.commit_changes()
.into_iter()
.flat_map(|change| {
let files = match change {
VfsChange::AddRoot { files, .. } => files,
_ => panic!("unexpected change"),
};
files.into_iter().map(|(_id, path, text)| {
let text: String = (&*text).clone();
(format!("{}", path.display()), text)
})
})
.collect::<HashSet<_>>();
let expected_files = [("foo.rs", "hello"), ("bar.rs", "world"), ("baz.rs", "nested hello")]
.iter()
.map(|(path, text)| (path.to_string(), text.to_string()))
.collect::<HashSet<_>>();
assert_eq!(files, expected_files);
}
fs::write(&dir.path().join("a/b/baz.rs"), "quux").unwrap();
process_tasks(&mut vfs, 1);
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::ChangeFile { text, .. }],
assert_eq!(text.as_str(), "quux")
);
vfs.add_file_overlay(&dir.path().join("a/b/baz.rs"), "m".to_string());
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::ChangeFile { text, .. }],
assert_eq!(text.as_str(), "m")
);
// changing file on disk while overlayed doesn't generate a VfsChange
fs::write(&dir.path().join("a/b/baz.rs"), "corge").unwrap();
process_tasks(&mut vfs, 1);
assert_match!(vfs.commit_changes().as_slice(), []);
// removing overlay restores data on disk
vfs.remove_file_overlay(&dir.path().join("a/b/baz.rs"));
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::ChangeFile { text, .. }],
assert_eq!(text.as_str(), "corge")
);
vfs.add_file_overlay(&dir.path().join("a/b/spam.rs"), "spam".to_string());
assert_match!(vfs.commit_changes().as_slice(), [VfsChange::AddFile { text, path, .. }], {
assert_eq!(text.as_str(), "spam");
assert_eq!(path, "spam.rs");
});
vfs.remove_file_overlay(&dir.path().join("a/b/spam.rs"));
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::RemoveFile { path, .. }],
assert_eq!(path, "spam.rs")
);
fs::create_dir_all(dir.path().join("a/sub1/sub2")).unwrap();
fs::write(dir.path().join("a/sub1/sub2/new.rs"), "new hello").unwrap();
process_tasks(&mut vfs, 1);
assert_match!(vfs.commit_changes().as_slice(), [VfsChange::AddFile { text, path, .. }], {
assert_eq!(text.as_str(), "new hello");
assert_eq!(path, "sub1/sub2/new.rs");
});
fs::rename(&dir.path().join("a/sub1/sub2/new.rs"), &dir.path().join("a/sub1/sub2/new1.rs"))
.unwrap();
process_tasks(&mut vfs, 2);
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::RemoveFile { path: removed_path, .. }, VfsChange::AddFile { text, path: added_path, .. }],
{
assert_eq!(removed_path, "sub1/sub2/new.rs");
assert_eq!(added_path, "sub1/sub2/new1.rs");
assert_eq!(text.as_str(), "new hello");
}
);
fs::remove_file(&dir.path().join("a/sub1/sub2/new1.rs")).unwrap();
process_tasks(&mut vfs, 1);
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::RemoveFile { path, .. }],
assert_eq!(path, "sub1/sub2/new1.rs")
);
{
vfs.add_file_overlay(&dir.path().join("a/memfile.rs"), "memfile".to_string());
assert_match!(
vfs.commit_changes().as_slice(),
[VfsChange::AddFile { text, .. }],
assert_eq!(text.as_str(), "memfile")
);
fs::write(&dir.path().join("a/memfile.rs"), "ignore me").unwrap();
process_tasks(&mut vfs, 1);
assert_match!(vfs.commit_changes().as_slice(), []);
}
// should be ignored
fs::create_dir_all(dir.path().join("a/target")).unwrap();
fs::write(&dir.path().join("a/target/new.rs"), "ignore me").unwrap();
assert_match!(
vfs.task_receiver().recv_timeout(Duration::from_millis(300)), // slightly more than watcher debounce delay
Err(RecvTimeoutError::Timeout)
);
Ok(())
}
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