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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
extern crate ra_syntax;
#[macro_use]
extern crate test_utils;
extern crate walkdir;
use std::{
fmt::Write,
fs,
path::{Path, PathBuf, Component},
};
use ra_syntax::{
utils::{check_fuzz_invariants, dump_tree},
SourceFileNode,
};
#[test]
fn lexer_tests() {
dir_tests(&["lexer"], |text, _| {
let tokens = ra_syntax::tokenize(text);
dump_tokens(&tokens, text)
})
}
#[test]
fn parser_tests() {
dir_tests(&["parser/inline/ok", "parser/ok"], |text, path| {
let file = SourceFileNode::parse(text);
let errors = file.errors();
assert_eq!(
&*errors,
&[] as &[ra_syntax::SyntaxError],
"There should be no errors in the file {:?}",
path.display()
);
dump_tree(file.syntax())
});
dir_tests(&["parser/err", "parser/inline/err"], |text, path| {
let file = SourceFileNode::parse(text);
let errors = file.errors();
assert_ne!(
&*errors,
&[] as &[ra_syntax::SyntaxError],
"There should be errors in the file {:?}",
path.display()
);
dump_tree(file.syntax())
});
}
#[test]
fn parser_fuzz_tests() {
for (_, text) in collect_tests(&["parser/fuzz-failures"]) {
check_fuzz_invariants(&text)
}
}
/// Test that Rust-analyzer can parse and validate the rust-analyser
/// TODO: Use this as a benchmark
#[test]
fn self_hosting_parsing() {
use std::ffi::OsStr;
let dir = project_dir().join("crates");
let mut count = 0;
for entry in walkdir::WalkDir::new(dir)
.into_iter()
.filter_entry(|entry| {
!entry
.path()
.components()
// TODO: this more neatly
.any(|component| {
// Get all files which are not in the crates/ra_syntax/tests/data folder
component == Component::Normal(OsStr::new("data"))
})
})
.map(|e| e.unwrap())
.filter(|entry| {
// Get all `.rs ` files
!entry.path().is_dir() && (entry.path().extension() == Some(OsStr::new("rs")))
})
{
count += 1;
let text = read_text(entry.path());
let node = SourceFileNode::parse(&text);
let errors = node.errors();
assert_eq!(
&*errors,
&[],
"There should be no errors in the file {:?}",
entry
);
}
assert!(
count > 30,
"self_hosting_parsing found too few files - is it running in the right directory?"
)
}
/// Read file and normalize newlines.
///
/// `rustc` seems to always normalize `\r\n` newlines to `\n`:
///
/// ```
/// let s = "
/// ";
/// assert_eq!(s.as_bytes(), &[10]);
/// ```
///
/// so this should always be correct.
fn read_text(path: &Path) -> String {
fs::read_to_string(path)
.expect(&format!("File at {:?} should be valid", path))
.replace("\r\n", "\n")
}
fn dir_tests<F>(paths: &[&str], f: F)
where
F: Fn(&str, &Path) -> String,
{
for (path, input_code) in collect_tests(paths) {
let parse_tree = f(&input_code, &path);
let path = path.with_extension("txt");
if !path.exists() {
println!("\nfile: {}", path.display());
println!("No .txt file with expected result, creating...\n");
println!("{}\n{}", input_code, parse_tree);
fs::write(&path, parse_tree).unwrap();
panic!("No expected result")
}
let expected = read_text(&path);
let expected = expected.as_str();
let parse_tree = parse_tree.as_str();
assert_equal_text(expected, parse_tree, &path);
}
}
const REWRITE: bool = false;
fn assert_equal_text(expected: &str, actual: &str, path: &Path) {
if expected == actual {
return;
}
let dir = project_dir();
let pretty_path = path.strip_prefix(&dir).unwrap_or_else(|_| path);
if expected.trim() == actual.trim() {
println!("whitespace difference, rewriting");
println!("file: {}\n", pretty_path.display());
fs::write(path, actual).unwrap();
return;
}
if REWRITE {
println!("rewriting {}", pretty_path.display());
fs::write(path, actual).unwrap();
return;
}
assert_eq_text!(expected, actual, "file: {}", pretty_path.display());
}
fn collect_tests(paths: &[&str]) -> Vec<(PathBuf, String)> {
paths
.iter()
.flat_map(|path| {
let path = test_data_dir().join(path);
test_from_dir(&path).into_iter()
})
.map(|path| {
let text = read_text(&path);
(path, text)
})
.collect()
}
fn test_from_dir(dir: &Path) -> Vec<PathBuf> {
let mut acc = Vec::new();
for file in fs::read_dir(&dir).unwrap() {
let file = file.unwrap();
let path = file.path();
if path.extension().unwrap_or_default() == "rs" {
acc.push(path);
}
}
acc.sort();
acc
}
fn project_dir() -> PathBuf {
let dir = env!("CARGO_MANIFEST_DIR");
PathBuf::from(dir)
.parent()
.unwrap()
.parent()
.unwrap()
.to_owned()
}
fn test_data_dir() -> PathBuf {
project_dir().join("crates/ra_syntax/tests/data")
}
fn dump_tokens(tokens: &[ra_syntax::Token], text: &str) -> String {
let mut acc = String::new();
let mut offset = 0;
for token in tokens {
let len: u32 = token.len.into();
let len = len as usize;
let token_text = &text[offset..offset + len];
offset += len;
write!(acc, "{:?} {} {:?}\n", token.kind, token.len, token_text).unwrap()
}
acc
}
|
