1pub mod arc_cow;
2pub mod fs;
3pub mod paths;
4pub mod serde;
5#[cfg(any(test, feature = "test-support"))]
6pub mod test;
7
8use futures::Future;
9
10use regex::Regex;
11use std::sync::OnceLock;
12use std::{
13 borrow::Cow,
14 cmp::{self, Ordering},
15 env,
16 ops::{AddAssign, Range, RangeInclusive},
17 panic::Location,
18 pin::Pin,
19 task::{Context, Poll},
20 time::Instant,
21};
22use unicase::UniCase;
23
24pub use take_until::*;
25
26#[macro_export]
27macro_rules! debug_panic {
28 ( $($fmt_arg:tt)* ) => {
29 if cfg!(debug_assertions) {
30 panic!( $($fmt_arg)* );
31 } else {
32 let backtrace = std::backtrace::Backtrace::capture();
33 log::error!("{}\n{:?}", format_args!($($fmt_arg)*), backtrace);
34 }
35 };
36}
37
38#[macro_export]
39macro_rules! with_clone {
40 ($i:ident, move ||$l:expr) => {{
41 let $i = $i.clone();
42 move || {
43 $l
44 }
45 }};
46 ($i:ident, move |$($k:pat_param),*|$l:expr) => {{
47 let $i = $i.clone();
48 move |$( $k ),*| {
49 $l
50 }
51 }};
52
53 (($($i:ident),+), move ||$l:expr) => {{
54 let ($($i),+) = ($($i.clone()),+);
55 move || {
56 $l
57 }
58 }};
59 (($($i:ident),+), move |$($k:pat_param),*|$l:expr) => {{
60 let ($($i),+) = ($($i.clone()),+);
61 move |$( $k ),*| {
62 $l
63 }
64 }};
65}
66
67mod test_with_clone {
68
69 // If this test compiles, it works
70 #[test]
71 fn test() {
72 let x = "String".to_string();
73 let y = std::sync::Arc::new(5);
74
75 fn no_arg(f: impl FnOnce()) {
76 f()
77 }
78
79 no_arg(with_clone!(x, move || {
80 drop(x);
81 }));
82
83 no_arg(with_clone!((x, y), move || {
84 drop(x);
85 drop(y);
86 }));
87
88 fn one_arg(f: impl FnOnce(usize)) {
89 f(1)
90 }
91
92 one_arg(with_clone!(x, move |_| {
93 drop(x);
94 }));
95 one_arg(with_clone!((x, y), move |b| {
96 drop(x);
97 drop(y);
98 println!("{}", b);
99 }));
100
101 fn two_arg(f: impl FnOnce(usize, bool)) {
102 f(5, true)
103 }
104
105 two_arg(with_clone!((x, y), move |a, b| {
106 drop(x);
107 drop(y);
108 println!("{}{}", a, b)
109 }));
110 two_arg(with_clone!((x, y), move |a, _| {
111 drop(x);
112 drop(y);
113 println!("{}", a)
114 }));
115 two_arg(with_clone!((x, y), move |_, b| {
116 drop(x);
117 drop(y);
118 println!("{}", b)
119 }));
120
121 struct Example {
122 z: usize,
123 }
124
125 fn destructuring_example(f: impl FnOnce(Example)) {
126 f(Example { z: 10 })
127 }
128
129 destructuring_example(with_clone!(x, move |Example { z }| {
130 drop(x);
131 println!("{}", z);
132 }));
133
134 let a_long_variable_1 = "".to_string();
135 let a_long_variable_2 = "".to_string();
136 let a_long_variable_3 = "".to_string();
137 let a_long_variable_4 = "".to_string();
138 two_arg(with_clone!(
139 (
140 x,
141 y,
142 a_long_variable_1,
143 a_long_variable_2,
144 a_long_variable_3,
145 a_long_variable_4
146 ),
147 move |a, b| {
148 drop(x);
149 drop(y);
150 drop(a_long_variable_1);
151 drop(a_long_variable_2);
152 drop(a_long_variable_3);
153 drop(a_long_variable_4);
154 println!("{}{}", a, b)
155 }
156 ));
157
158 fn single_expression_body(f: impl FnOnce(usize) -> usize) -> usize {
159 f(20)
160 }
161
162 let _result = single_expression_body(with_clone!(y, move |z| *y + z));
163
164 // Explicitly move all variables
165 drop(x);
166 drop(y);
167 drop(a_long_variable_1);
168 drop(a_long_variable_2);
169 drop(a_long_variable_3);
170 drop(a_long_variable_4);
171 }
172}
173
174pub fn truncate(s: &str, max_chars: usize) -> &str {
175 match s.char_indices().nth(max_chars) {
176 None => s,
177 Some((idx, _)) => &s[..idx],
178 }
179}
180
181/// Removes characters from the end of the string if its length is greater than `max_chars` and
182/// appends "..." to the string. Returns string unchanged if its length is smaller than max_chars.
183pub fn truncate_and_trailoff(s: &str, max_chars: usize) -> String {
184 debug_assert!(max_chars >= 5);
185
186 let truncation_ix = s.char_indices().map(|(i, _)| i).nth(max_chars);
187 match truncation_ix {
188 Some(length) => s[..length].to_string() + "…",
189 None => s.to_string(),
190 }
191}
192
193/// Removes characters from the front of the string if its length is greater than `max_chars` and
194/// prepends the string with "...". Returns string unchanged if its length is smaller than max_chars.
195pub fn truncate_and_remove_front(s: &str, max_chars: usize) -> String {
196 debug_assert!(max_chars >= 5);
197
198 let truncation_ix = s.char_indices().map(|(i, _)| i).nth_back(max_chars);
199 match truncation_ix {
200 Some(length) => "…".to_string() + &s[length..],
201 None => s.to_string(),
202 }
203}
204
205/// Takes only `max_lines` from the string and, if there were more than `max_lines-1`, appends a
206/// a newline and "..." to the string, so that `max_lines` are returned.
207/// Returns string unchanged if its length is smaller than max_lines.
208pub fn truncate_lines_and_trailoff(s: &str, max_lines: usize) -> String {
209 let mut lines = s.lines().take(max_lines).collect::<Vec<_>>();
210 if lines.len() > max_lines - 1 {
211 lines.pop();
212 lines.join("\n") + "\n…"
213 } else {
214 lines.join("\n")
215 }
216}
217
218pub fn post_inc<T: From<u8> + AddAssign<T> + Copy>(value: &mut T) -> T {
219 let prev = *value;
220 *value += T::from(1);
221 prev
222}
223
224/// Extend a sorted vector with a sorted sequence of items, maintaining the vector's sort order and
225/// enforcing a maximum length. This also de-duplicates items. Sort the items according to the given callback. Before calling this,
226/// both `vec` and `new_items` should already be sorted according to the `cmp` comparator.
227pub fn extend_sorted<T, I, F>(vec: &mut Vec<T>, new_items: I, limit: usize, mut cmp: F)
228where
229 I: IntoIterator<Item = T>,
230 F: FnMut(&T, &T) -> Ordering,
231{
232 let mut start_index = 0;
233 for new_item in new_items {
234 if let Err(i) = vec[start_index..].binary_search_by(|m| cmp(m, &new_item)) {
235 let index = start_index + i;
236 if vec.len() < limit {
237 vec.insert(index, new_item);
238 } else if index < vec.len() {
239 vec.pop();
240 vec.insert(index, new_item);
241 }
242 start_index = index;
243 }
244 }
245}
246
247/// Parse the result of calling `usr/bin/env` with no arguments
248pub fn parse_env_output(env: &str, mut f: impl FnMut(String, String)) {
249 let mut current_key: Option<String> = None;
250 let mut current_value: Option<String> = None;
251
252 for line in env.split_terminator('\n') {
253 if let Some(separator_index) = line.find('=') {
254 if !line[..separator_index].is_empty() {
255 if let Some((key, value)) = Option::zip(current_key.take(), current_value.take()) {
256 f(key, value)
257 }
258 current_key = Some(line[..separator_index].to_string());
259 current_value = Some(line[separator_index + 1..].to_string());
260 continue;
261 };
262 }
263 if let Some(value) = current_value.as_mut() {
264 value.push('\n');
265 value.push_str(line);
266 }
267 }
268 if let Some((key, value)) = Option::zip(current_key.take(), current_value.take()) {
269 f(key, value)
270 }
271}
272
273pub fn merge_json_value_into(source: serde_json::Value, target: &mut serde_json::Value) {
274 use serde_json::Value;
275
276 match (source, target) {
277 (Value::Object(source), Value::Object(target)) => {
278 for (key, value) in source {
279 if let Some(target) = target.get_mut(&key) {
280 merge_json_value_into(value, target);
281 } else {
282 target.insert(key.clone(), value);
283 }
284 }
285 }
286
287 (source, target) => *target = source,
288 }
289}
290
291pub fn merge_non_null_json_value_into(source: serde_json::Value, target: &mut serde_json::Value) {
292 use serde_json::Value;
293 if let Value::Object(source_object) = source {
294 let target_object = if let Value::Object(target) = target {
295 target
296 } else {
297 *target = Value::Object(Default::default());
298 target.as_object_mut().unwrap()
299 };
300 for (key, value) in source_object {
301 if let Some(target) = target_object.get_mut(&key) {
302 merge_non_null_json_value_into(value, target);
303 } else if !value.is_null() {
304 target_object.insert(key.clone(), value);
305 }
306 }
307 } else if !source.is_null() {
308 *target = source
309 }
310}
311
312pub fn measure<R>(label: &str, f: impl FnOnce() -> R) -> R {
313 static ZED_MEASUREMENTS: OnceLock<bool> = OnceLock::new();
314 let zed_measurements = ZED_MEASUREMENTS.get_or_init(|| {
315 env::var("ZED_MEASUREMENTS")
316 .map(|measurements| measurements == "1" || measurements == "true")
317 .unwrap_or(false)
318 });
319
320 if *zed_measurements {
321 let start = Instant::now();
322 let result = f();
323 let elapsed = start.elapsed();
324 eprintln!("{}: {:?}", label, elapsed);
325 result
326 } else {
327 f()
328 }
329}
330
331pub trait ResultExt<E> {
332 type Ok;
333
334 fn log_err(self) -> Option<Self::Ok>;
335 /// Assert that this result should never be an error in development or tests.
336 fn debug_assert_ok(self, reason: &str) -> Self;
337 fn warn_on_err(self) -> Option<Self::Ok>;
338}
339
340impl<T, E> ResultExt<E> for Result<T, E>
341where
342 E: std::fmt::Debug,
343{
344 type Ok = T;
345
346 #[track_caller]
347 fn log_err(self) -> Option<T> {
348 match self {
349 Ok(value) => Some(value),
350 Err(error) => {
351 log_error_with_caller(*Location::caller(), error, log::Level::Error);
352 None
353 }
354 }
355 }
356
357 #[track_caller]
358 fn debug_assert_ok(self, reason: &str) -> Self {
359 if let Err(error) = &self {
360 debug_panic!("{reason} - {error:?}");
361 }
362 self
363 }
364
365 #[track_caller]
366 fn warn_on_err(self) -> Option<T> {
367 match self {
368 Ok(value) => Some(value),
369 Err(error) => {
370 log_error_with_caller(*Location::caller(), error, log::Level::Warn);
371 None
372 }
373 }
374 }
375}
376
377fn log_error_with_caller<E>(caller: core::panic::Location<'_>, error: E, level: log::Level)
378where
379 E: std::fmt::Debug,
380{
381 #[cfg(not(target_os = "windows"))]
382 let file = caller.file();
383 #[cfg(target_os = "windows")]
384 let file = caller.file().replace('\\', "/");
385 // In this codebase, the first segment of the file path is
386 // the 'crates' folder, followed by the crate name.
387 let target = file.split('/').nth(1);
388
389 log::logger().log(
390 &log::Record::builder()
391 .target(target.unwrap_or(""))
392 .module_path(target)
393 .args(format_args!("{:?}", error))
394 .file(Some(caller.file()))
395 .line(Some(caller.line()))
396 .level(level)
397 .build(),
398 );
399}
400
401pub trait TryFutureExt {
402 fn log_err(self) -> LogErrorFuture<Self>
403 where
404 Self: Sized;
405
406 fn log_tracked_err(self, location: core::panic::Location<'static>) -> LogErrorFuture<Self>
407 where
408 Self: Sized;
409
410 fn warn_on_err(self) -> LogErrorFuture<Self>
411 where
412 Self: Sized;
413 fn unwrap(self) -> UnwrapFuture<Self>
414 where
415 Self: Sized;
416}
417
418impl<F, T, E> TryFutureExt for F
419where
420 F: Future<Output = Result<T, E>>,
421 E: std::fmt::Debug,
422{
423 #[track_caller]
424 fn log_err(self) -> LogErrorFuture<Self>
425 where
426 Self: Sized,
427 {
428 let location = Location::caller();
429 LogErrorFuture(self, log::Level::Error, *location)
430 }
431
432 fn log_tracked_err(self, location: core::panic::Location<'static>) -> LogErrorFuture<Self>
433 where
434 Self: Sized,
435 {
436 LogErrorFuture(self, log::Level::Error, location)
437 }
438
439 #[track_caller]
440 fn warn_on_err(self) -> LogErrorFuture<Self>
441 where
442 Self: Sized,
443 {
444 let location = Location::caller();
445 LogErrorFuture(self, log::Level::Warn, *location)
446 }
447
448 fn unwrap(self) -> UnwrapFuture<Self>
449 where
450 Self: Sized,
451 {
452 UnwrapFuture(self)
453 }
454}
455
456#[must_use]
457pub struct LogErrorFuture<F>(F, log::Level, core::panic::Location<'static>);
458
459impl<F, T, E> Future for LogErrorFuture<F>
460where
461 F: Future<Output = Result<T, E>>,
462 E: std::fmt::Debug,
463{
464 type Output = Option<T>;
465
466 fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
467 let level = self.1;
468 let location = self.2;
469 let inner = unsafe { Pin::new_unchecked(&mut self.get_unchecked_mut().0) };
470 match inner.poll(cx) {
471 Poll::Ready(output) => Poll::Ready(match output {
472 Ok(output) => Some(output),
473 Err(error) => {
474 log_error_with_caller(location, error, level);
475 None
476 }
477 }),
478 Poll::Pending => Poll::Pending,
479 }
480 }
481}
482
483pub struct UnwrapFuture<F>(F);
484
485impl<F, T, E> Future for UnwrapFuture<F>
486where
487 F: Future<Output = Result<T, E>>,
488 E: std::fmt::Debug,
489{
490 type Output = T;
491
492 fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
493 let inner = unsafe { Pin::new_unchecked(&mut self.get_unchecked_mut().0) };
494 match inner.poll(cx) {
495 Poll::Ready(result) => Poll::Ready(result.unwrap()),
496 Poll::Pending => Poll::Pending,
497 }
498 }
499}
500
501pub struct Deferred<F: FnOnce()>(Option<F>);
502
503impl<F: FnOnce()> Deferred<F> {
504 /// Drop without running the deferred function.
505 pub fn abort(mut self) {
506 self.0.take();
507 }
508}
509
510impl<F: FnOnce()> Drop for Deferred<F> {
511 fn drop(&mut self) {
512 if let Some(f) = self.0.take() {
513 f()
514 }
515 }
516}
517
518/// Run the given function when the returned value is dropped (unless it's cancelled).
519#[must_use]
520pub fn defer<F: FnOnce()>(f: F) -> Deferred<F> {
521 Deferred(Some(f))
522}
523
524#[cfg(any(test, feature = "test-support"))]
525mod rng {
526 use rand::{seq::SliceRandom, Rng};
527 pub struct RandomCharIter<T: Rng> {
528 rng: T,
529 simple_text: bool,
530 }
531
532 impl<T: Rng> RandomCharIter<T> {
533 pub fn new(rng: T) -> Self {
534 Self {
535 rng,
536 simple_text: std::env::var("SIMPLE_TEXT").map_or(false, |v| !v.is_empty()),
537 }
538 }
539
540 pub fn with_simple_text(mut self) -> Self {
541 self.simple_text = true;
542 self
543 }
544 }
545
546 impl<T: Rng> Iterator for RandomCharIter<T> {
547 type Item = char;
548
549 fn next(&mut self) -> Option<Self::Item> {
550 if self.simple_text {
551 return if self.rng.gen_range(0..100) < 5 {
552 Some('\n')
553 } else {
554 Some(self.rng.gen_range(b'a'..b'z' + 1).into())
555 };
556 }
557
558 match self.rng.gen_range(0..100) {
559 // whitespace
560 0..=19 => [' ', '\n', '\r', '\t'].choose(&mut self.rng).copied(),
561 // two-byte greek letters
562 20..=32 => char::from_u32(self.rng.gen_range(('α' as u32)..('ω' as u32 + 1))),
563 // // three-byte characters
564 33..=45 => ['✋', '✅', '❌', '❎', '⭐']
565 .choose(&mut self.rng)
566 .copied(),
567 // // four-byte characters
568 46..=58 => ['🍐', '🏀', '🍗', '🎉'].choose(&mut self.rng).copied(),
569 // ascii letters
570 _ => Some(self.rng.gen_range(b'a'..b'z' + 1).into()),
571 }
572 }
573 }
574}
575#[cfg(any(test, feature = "test-support"))]
576pub use rng::RandomCharIter;
577/// Get an embedded file as a string.
578pub fn asset_str<A: rust_embed::RustEmbed>(path: &str) -> Cow<'static, str> {
579 match A::get(path).unwrap().data {
580 Cow::Borrowed(bytes) => Cow::Borrowed(std::str::from_utf8(bytes).unwrap()),
581 Cow::Owned(bytes) => Cow::Owned(String::from_utf8(bytes).unwrap()),
582 }
583}
584
585/// Expands to an immediately-invoked function expression. Good for using the ? operator
586/// in functions which do not return an Option or Result.
587///
588/// Accepts a normal block, an async block, or an async move block.
589#[macro_export]
590macro_rules! maybe {
591 ($block:block) => {
592 (|| $block)()
593 };
594 (async $block:block) => {
595 (|| async $block)()
596 };
597 (async move $block:block) => {
598 (|| async move $block)()
599 };
600}
601
602pub trait RangeExt<T> {
603 fn sorted(&self) -> Self;
604 fn to_inclusive(&self) -> RangeInclusive<T>;
605 fn overlaps(&self, other: &Range<T>) -> bool;
606 fn contains_inclusive(&self, other: &Range<T>) -> bool;
607}
608
609impl<T: Ord + Clone> RangeExt<T> for Range<T> {
610 fn sorted(&self) -> Self {
611 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
612 }
613
614 fn to_inclusive(&self) -> RangeInclusive<T> {
615 self.start.clone()..=self.end.clone()
616 }
617
618 fn overlaps(&self, other: &Range<T>) -> bool {
619 self.start < other.end && other.start < self.end
620 }
621
622 fn contains_inclusive(&self, other: &Range<T>) -> bool {
623 self.start <= other.start && other.end <= self.end
624 }
625}
626
627impl<T: Ord + Clone> RangeExt<T> for RangeInclusive<T> {
628 fn sorted(&self) -> Self {
629 cmp::min(self.start(), self.end()).clone()..=cmp::max(self.start(), self.end()).clone()
630 }
631
632 fn to_inclusive(&self) -> RangeInclusive<T> {
633 self.clone()
634 }
635
636 fn overlaps(&self, other: &Range<T>) -> bool {
637 self.start() < &other.end && &other.start <= self.end()
638 }
639
640 fn contains_inclusive(&self, other: &Range<T>) -> bool {
641 self.start() <= &other.start && &other.end <= self.end()
642 }
643}
644
645/// A way to sort strings with starting numbers numerically first, falling back to alphanumeric one,
646/// case-insensitive.
647///
648/// This is useful for turning regular alphanumerically sorted sequences as `1-abc, 10, 11-def, .., 2, 21-abc`
649/// into `1-abc, 2, 10, 11-def, .., 21-abc`
650#[derive(Debug, PartialEq, Eq)]
651pub struct NumericPrefixWithSuffix<'a>(Option<u64>, &'a str);
652
653impl<'a> NumericPrefixWithSuffix<'a> {
654 pub fn from_numeric_prefixed_str(str: &'a str) -> Self {
655 let i = str.chars().take_while(|c| c.is_ascii_digit()).count();
656 let (prefix, remainder) = str.split_at(i);
657
658 let prefix = prefix.parse().ok();
659 Self(prefix, remainder)
660 }
661}
662
663/// When dealing with equality, we need to consider the case of the strings to achieve strict equality
664/// to handle cases like "a" < "A" instead of "a" == "A".
665impl Ord for NumericPrefixWithSuffix<'_> {
666 fn cmp(&self, other: &Self) -> Ordering {
667 match (self.0, other.0) {
668 (None, None) => UniCase::new(self.1)
669 .cmp(&UniCase::new(other.1))
670 .then_with(|| self.1.cmp(other.1).reverse()),
671 (None, Some(_)) => Ordering::Greater,
672 (Some(_), None) => Ordering::Less,
673 (Some(a), Some(b)) => a.cmp(&b).then_with(|| {
674 UniCase::new(self.1)
675 .cmp(&UniCase::new(other.1))
676 .then_with(|| self.1.cmp(other.1).reverse())
677 }),
678 }
679 }
680}
681
682impl<'a> PartialOrd for NumericPrefixWithSuffix<'a> {
683 fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
684 Some(self.cmp(other))
685 }
686}
687
688fn emoji_regex() -> &'static Regex {
689 static EMOJI_REGEX: OnceLock<Regex> = OnceLock::new();
690 EMOJI_REGEX.get_or_init(|| Regex::new("(\\p{Emoji}|\u{200D})").unwrap())
691}
692
693/// Returns true if the given string consists of emojis only.
694/// E.g. "👨👩👧👧👋" will return true, but "👋!" will return false.
695pub fn word_consists_of_emojis(s: &str) -> bool {
696 let mut prev_end = 0;
697 for capture in emoji_regex().find_iter(s) {
698 if capture.start() != prev_end {
699 return false;
700 }
701 prev_end = capture.end();
702 }
703 prev_end == s.len()
704}
705
706#[cfg(test)]
707mod tests {
708 use super::*;
709
710 #[test]
711 fn test_extend_sorted() {
712 let mut vec = vec![];
713
714 extend_sorted(&mut vec, vec![21, 17, 13, 8, 1, 0], 5, |a, b| b.cmp(a));
715 assert_eq!(vec, &[21, 17, 13, 8, 1]);
716
717 extend_sorted(&mut vec, vec![101, 19, 17, 8, 2], 8, |a, b| b.cmp(a));
718 assert_eq!(vec, &[101, 21, 19, 17, 13, 8, 2, 1]);
719
720 extend_sorted(&mut vec, vec![1000, 19, 17, 9, 5], 8, |a, b| b.cmp(a));
721 assert_eq!(vec, &[1000, 101, 21, 19, 17, 13, 9, 8]);
722 }
723
724 #[test]
725 fn test_iife() {
726 fn option_returning_function() -> Option<()> {
727 None
728 }
729
730 let foo = maybe!({
731 option_returning_function()?;
732 Some(())
733 });
734
735 assert_eq!(foo, None);
736 }
737
738 #[test]
739 fn test_truncate_and_trailoff() {
740 assert_eq!(truncate_and_trailoff("", 5), "");
741 assert_eq!(truncate_and_trailoff("èèèèèè", 7), "èèèèèè");
742 assert_eq!(truncate_and_trailoff("èèèèèè", 6), "èèèèèè");
743 assert_eq!(truncate_and_trailoff("èèèèèè", 5), "èèèèè…");
744 }
745
746 #[test]
747 fn test_numeric_prefix_str_method() {
748 let target = "1a";
749 assert_eq!(
750 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
751 NumericPrefixWithSuffix(Some(1), "a")
752 );
753
754 let target = "12ab";
755 assert_eq!(
756 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
757 NumericPrefixWithSuffix(Some(12), "ab")
758 );
759
760 let target = "12_ab";
761 assert_eq!(
762 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
763 NumericPrefixWithSuffix(Some(12), "_ab")
764 );
765
766 let target = "1_2ab";
767 assert_eq!(
768 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
769 NumericPrefixWithSuffix(Some(1), "_2ab")
770 );
771
772 let target = "1.2";
773 assert_eq!(
774 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
775 NumericPrefixWithSuffix(Some(1), ".2")
776 );
777
778 let target = "1.2_a";
779 assert_eq!(
780 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
781 NumericPrefixWithSuffix(Some(1), ".2_a")
782 );
783
784 let target = "12.2_a";
785 assert_eq!(
786 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
787 NumericPrefixWithSuffix(Some(12), ".2_a")
788 );
789
790 let target = "12a.2_a";
791 assert_eq!(
792 NumericPrefixWithSuffix::from_numeric_prefixed_str(target),
793 NumericPrefixWithSuffix(Some(12), "a.2_a")
794 );
795 }
796
797 #[test]
798 fn test_numeric_prefix_with_suffix() {
799 let mut sorted = vec!["1-abc", "10", "11def", "2", "21-abc"];
800 sorted.sort_by_key(|s| NumericPrefixWithSuffix::from_numeric_prefixed_str(s));
801 assert_eq!(sorted, ["1-abc", "2", "10", "11def", "21-abc"]);
802
803 for numeric_prefix_less in ["numeric_prefix_less", "aaa", "~™£"] {
804 assert_eq!(
805 NumericPrefixWithSuffix::from_numeric_prefixed_str(numeric_prefix_less),
806 NumericPrefixWithSuffix(None, numeric_prefix_less),
807 "String without numeric prefix `{numeric_prefix_less}` should not be converted into NumericPrefixWithSuffix"
808 )
809 }
810 }
811
812 #[test]
813 fn test_word_consists_of_emojis() {
814 let words_to_test = vec![
815 ("👨👩👧👧👋🥒", true),
816 ("👋", true),
817 ("!👋", false),
818 ("👋!", false),
819 ("👋 ", false),
820 (" 👋", false),
821 ("Test", false),
822 ];
823
824 for (text, expected_result) in words_to_test {
825 assert_eq!(word_consists_of_emojis(text), expected_result);
826 }
827 }
828
829 #[test]
830 fn test_truncate_lines_and_trailoff() {
831 let text = r#"Line 1
832Line 2
833Line 3"#;
834
835 assert_eq!(
836 truncate_lines_and_trailoff(text, 2),
837 r#"Line 1
838…"#
839 );
840
841 assert_eq!(
842 truncate_lines_and_trailoff(text, 3),
843 r#"Line 1
844Line 2
845…"#
846 );
847
848 assert_eq!(
849 truncate_lines_and_trailoff(text, 4),
850 r#"Line 1
851Line 2
852Line 3"#
853 );
854 }
855}