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
|
#![allow(clippy::uninlined_format_args)]
#[track_caller]
fn test_1_error(pattern: &str, expected_err: &str) {
let res = regress::Regex::with_flags(pattern, "u");
assert!(res.is_err(), "Pattern should not have parsed: {}", pattern);
let err = res.err().unwrap().text;
assert!(
err.contains(expected_err),
"Error text '{}' did not contain '{}' for pattern '{}'",
err,
expected_err,
pattern
);
}
#[test]
fn test_excessive_capture_groups() {
let mut captures = String::from("s");
let mut loops = String::from("s");
for _ in 0..65536 {
captures.push_str("(x)");
loops.push_str("x{3,5}");
}
test_1_error(captures.as_str(), "Capture group count limit exceeded");
test_1_error(loops.as_str(), "Loop count limit exceeded");
}
#[test]
fn test_syntax_errors() {
test_1_error(r"*", "Invalid atom character");
test_1_error(r"x**", "Invalid atom character");
test_1_error(r"?", "Invalid atom character");
test_1_error(r"{3,5}", "Invalid atom character");
test_1_error(r"x{5,3}", "Invalid quantifier");
test_1_error(r"]", "Invalid atom character");
test_1_error(r"[abc", "Unbalanced bracket");
test_1_error(r"(", "Unbalanced parenthesis");
test_1_error(r"(?!", "Unbalanced parenthesis");
test_1_error(r"abc)", "Unbalanced parenthesis");
test_1_error(
r"[z-a]",
"Range values reversed, start char code is greater than end char code.",
);
// In unicode mode this is not allowed.
test_1_error(r"[a-\s]", "Invalid character range");
test_1_error("\\", "Incomplete escape");
test_1_error("^*", "Quantifier not allowed here");
test_1_error("${3}", "Quantifier not allowed here");
test_1_error("(?=abc)*", "Quantifier not allowed here");
test_1_error("(?!abc){3,}", "Quantifier not allowed here");
test_1_error(r"\2(a)", "Invalid character escape");
test_1_error("(?q:abc)", "Invalid group modifier");
}
|
