1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
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)
);
vfs.shutdown().unwrap();
Ok(())
}
|
