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-rw-r--r--crates/ide_db/src/call_info.rs527
-rw-r--r--crates/ide_db/src/call_info/tests.rs523
-rw-r--r--crates/ide_db/src/helpers/insert_use.rs639
-rw-r--r--crates/ide_db/src/helpers/insert_use/tests.rs620
-rw-r--r--crates/ide_db/src/line_index.rs131
-rw-r--r--crates/ide_db/src/line_index/tests.rs128
-rw-r--r--crates/ide_db/src/traits.rs148
-rw-r--r--crates/ide_db/src/traits/tests.rs144
8 files changed, 1419 insertions, 1441 deletions
diff --git a/crates/ide_db/src/call_info.rs b/crates/ide_db/src/call_info.rs
index 83a602b9a..615fa7b0e 100644
--- a/crates/ide_db/src/call_info.rs
+++ b/crates/ide_db/src/call_info.rs
@@ -228,529 +228,4 @@ impl FnCallNode {
228} 228}
229 229
230#[cfg(test)] 230#[cfg(test)]
231mod tests { 231mod tests;
232 use crate::RootDatabase;
233 use base_db::{fixture::ChangeFixture, FilePosition};
234 use expect_test::{expect, Expect};
235 use test_utils::{mark, RangeOrOffset};
236
237 /// Creates analysis from a multi-file fixture, returns positions marked with <|>.
238 pub(crate) fn position(ra_fixture: &str) -> (RootDatabase, FilePosition) {
239 let change_fixture = ChangeFixture::parse(ra_fixture);
240 let mut database = RootDatabase::default();
241 database.apply_change(change_fixture.change);
242 let (file_id, range_or_offset) =
243 change_fixture.file_position.expect("expected a marker (<|>)");
244 let offset = match range_or_offset {
245 RangeOrOffset::Range(_) => panic!(),
246 RangeOrOffset::Offset(it) => it,
247 };
248 (database, FilePosition { file_id, offset })
249 }
250
251 fn check(ra_fixture: &str, expect: Expect) {
252 let (db, position) = position(ra_fixture);
253 let call_info = crate::call_info::call_info(&db, position);
254 let actual = match call_info {
255 Some(call_info) => {
256 let docs = match &call_info.doc {
257 None => "".to_string(),
258 Some(docs) => format!("{}\n------\n", docs.as_str()),
259 };
260 let params = call_info
261 .parameter_labels()
262 .enumerate()
263 .map(|(i, param)| {
264 if Some(i) == call_info.active_parameter {
265 format!("<{}>", param)
266 } else {
267 param.to_string()
268 }
269 })
270 .collect::<Vec<_>>()
271 .join(", ");
272 format!("{}{}\n({})\n", docs, call_info.signature, params)
273 }
274 None => String::new(),
275 };
276 expect.assert_eq(&actual);
277 }
278
279 #[test]
280 fn test_fn_signature_two_args() {
281 check(
282 r#"
283fn foo(x: u32, y: u32) -> u32 {x + y}
284fn bar() { foo(<|>3, ); }
285"#,
286 expect![[r#"
287 fn foo(x: u32, y: u32) -> u32
288 (<x: u32>, y: u32)
289 "#]],
290 );
291 check(
292 r#"
293fn foo(x: u32, y: u32) -> u32 {x + y}
294fn bar() { foo(3<|>, ); }
295"#,
296 expect![[r#"
297 fn foo(x: u32, y: u32) -> u32
298 (<x: u32>, y: u32)
299 "#]],
300 );
301 check(
302 r#"
303fn foo(x: u32, y: u32) -> u32 {x + y}
304fn bar() { foo(3,<|> ); }
305"#,
306 expect![[r#"
307 fn foo(x: u32, y: u32) -> u32
308 (x: u32, <y: u32>)
309 "#]],
310 );
311 check(
312 r#"
313fn foo(x: u32, y: u32) -> u32 {x + y}
314fn bar() { foo(3, <|>); }
315"#,
316 expect![[r#"
317 fn foo(x: u32, y: u32) -> u32
318 (x: u32, <y: u32>)
319 "#]],
320 );
321 }
322
323 #[test]
324 fn test_fn_signature_two_args_empty() {
325 check(
326 r#"
327fn foo(x: u32, y: u32) -> u32 {x + y}
328fn bar() { foo(<|>); }
329"#,
330 expect![[r#"
331 fn foo(x: u32, y: u32) -> u32
332 (<x: u32>, y: u32)
333 "#]],
334 );
335 }
336
337 #[test]
338 fn test_fn_signature_two_args_first_generics() {
339 check(
340 r#"
341fn foo<T, U: Copy + Display>(x: T, y: U) -> u32
342 where T: Copy + Display, U: Debug
343{ x + y }
344
345fn bar() { foo(<|>3, ); }
346"#,
347 expect![[r#"
348 fn foo(x: i32, y: {unknown}) -> u32
349 (<x: i32>, y: {unknown})
350 "#]],
351 );
352 }
353
354 #[test]
355 fn test_fn_signature_no_params() {
356 check(
357 r#"
358fn foo<T>() -> T where T: Copy + Display {}
359fn bar() { foo(<|>); }
360"#,
361 expect![[r#"
362 fn foo() -> {unknown}
363 ()
364 "#]],
365 );
366 }
367
368 #[test]
369 fn test_fn_signature_for_impl() {
370 check(
371 r#"
372struct F;
373impl F { pub fn new() { } }
374fn bar() {
375 let _ : F = F::new(<|>);
376}
377"#,
378 expect![[r#"
379 fn new()
380 ()
381 "#]],
382 );
383 }
384
385 #[test]
386 fn test_fn_signature_for_method_self() {
387 check(
388 r#"
389struct S;
390impl S { pub fn do_it(&self) {} }
391
392fn bar() {
393 let s: S = S;
394 s.do_it(<|>);
395}
396"#,
397 expect![[r#"
398 fn do_it(&self)
399 ()
400 "#]],
401 );
402 }
403
404 #[test]
405 fn test_fn_signature_for_method_with_arg() {
406 check(
407 r#"
408struct S;
409impl S {
410 fn foo(&self, x: i32) {}
411}
412
413fn main() { S.foo(<|>); }
414"#,
415 expect![[r#"
416 fn foo(&self, x: i32)
417 (<x: i32>)
418 "#]],
419 );
420 }
421
422 #[test]
423 fn test_fn_signature_for_method_with_arg_as_assoc_fn() {
424 check(
425 r#"
426struct S;
427impl S {
428 fn foo(&self, x: i32) {}
429}
430
431fn main() { S::foo(<|>); }
432"#,
433 expect![[r#"
434 fn foo(self: &S, x: i32)
435 (<self: &S>, x: i32)
436 "#]],
437 );
438 }
439
440 #[test]
441 fn test_fn_signature_with_docs_simple() {
442 check(
443 r#"
444/// test
445// non-doc-comment
446fn foo(j: u32) -> u32 {
447 j
448}
449
450fn bar() {
451 let _ = foo(<|>);
452}
453"#,
454 expect![[r#"
455 test
456 ------
457 fn foo(j: u32) -> u32
458 (<j: u32>)
459 "#]],
460 );
461 }
462
463 #[test]
464 fn test_fn_signature_with_docs() {
465 check(
466 r#"
467/// Adds one to the number given.
468///
469/// # Examples
470///
471/// ```
472/// let five = 5;
473///
474/// assert_eq!(6, my_crate::add_one(5));
475/// ```
476pub fn add_one(x: i32) -> i32 {
477 x + 1
478}
479
480pub fn do() {
481 add_one(<|>
482}"#,
483 expect![[r##"
484 Adds one to the number given.
485
486 # Examples
487
488 ```
489 let five = 5;
490
491 assert_eq!(6, my_crate::add_one(5));
492 ```
493 ------
494 fn add_one(x: i32) -> i32
495 (<x: i32>)
496 "##]],
497 );
498 }
499
500 #[test]
501 fn test_fn_signature_with_docs_impl() {
502 check(
503 r#"
504struct addr;
505impl addr {
506 /// Adds one to the number given.
507 ///
508 /// # Examples
509 ///
510 /// ```
511 /// let five = 5;
512 ///
513 /// assert_eq!(6, my_crate::add_one(5));
514 /// ```
515 pub fn add_one(x: i32) -> i32 {
516 x + 1
517 }
518}
519
520pub fn do_it() {
521 addr {};
522 addr::add_one(<|>);
523}
524"#,
525 expect![[r##"
526 Adds one to the number given.
527
528 # Examples
529
530 ```
531 let five = 5;
532
533 assert_eq!(6, my_crate::add_one(5));
534 ```
535 ------
536 fn add_one(x: i32) -> i32
537 (<x: i32>)
538 "##]],
539 );
540 }
541
542 #[test]
543 fn test_fn_signature_with_docs_from_actix() {
544 check(
545 r#"
546struct WriteHandler<E>;
547
548impl<E> WriteHandler<E> {
549 /// Method is called when writer emits error.
550 ///
551 /// If this method returns `ErrorAction::Continue` writer processing
552 /// continues otherwise stream processing stops.
553 fn error(&mut self, err: E, ctx: &mut Self::Context) -> Running {
554 Running::Stop
555 }
556
557 /// Method is called when writer finishes.
558 ///
559 /// By default this method stops actor's `Context`.
560 fn finished(&mut self, ctx: &mut Self::Context) {
561 ctx.stop()
562 }
563}
564
565pub fn foo(mut r: WriteHandler<()>) {
566 r.finished(<|>);
567}
568"#,
569 expect![[r#"
570 Method is called when writer finishes.
571
572 By default this method stops actor's `Context`.
573 ------
574 fn finished(&mut self, ctx: &mut {unknown})
575 (<ctx: &mut {unknown}>)
576 "#]],
577 );
578 }
579
580 #[test]
581 fn call_info_bad_offset() {
582 mark::check!(call_info_bad_offset);
583 check(
584 r#"
585fn foo(x: u32, y: u32) -> u32 {x + y}
586fn bar() { foo <|> (3, ); }
587"#,
588 expect![[""]],
589 );
590 }
591
592 #[test]
593 fn test_nested_method_in_lambda() {
594 check(
595 r#"
596struct Foo;
597impl Foo { fn bar(&self, _: u32) { } }
598
599fn bar(_: u32) { }
600
601fn main() {
602 let foo = Foo;
603 std::thread::spawn(move || foo.bar(<|>));
604}
605"#,
606 expect![[r#"
607 fn bar(&self, _: u32)
608 (<_: u32>)
609 "#]],
610 );
611 }
612
613 #[test]
614 fn works_for_tuple_structs() {
615 check(
616 r#"
617/// A cool tuple struct
618struct S(u32, i32);
619fn main() {
620 let s = S(0, <|>);
621}
622"#,
623 expect![[r#"
624 A cool tuple struct
625 ------
626 struct S(u32, i32)
627 (u32, <i32>)
628 "#]],
629 );
630 }
631
632 #[test]
633 fn generic_struct() {
634 check(
635 r#"
636struct S<T>(T);
637fn main() {
638 let s = S(<|>);
639}
640"#,
641 expect![[r#"
642 struct S({unknown})
643 (<{unknown}>)
644 "#]],
645 );
646 }
647
648 #[test]
649 fn works_for_enum_variants() {
650 check(
651 r#"
652enum E {
653 /// A Variant
654 A(i32),
655 /// Another
656 B,
657 /// And C
658 C { a: i32, b: i32 }
659}
660
661fn main() {
662 let a = E::A(<|>);
663}
664"#,
665 expect![[r#"
666 A Variant
667 ------
668 enum E::A(i32)
669 (<i32>)
670 "#]],
671 );
672 }
673
674 #[test]
675 fn cant_call_struct_record() {
676 check(
677 r#"
678struct S { x: u32, y: i32 }
679fn main() {
680 let s = S(<|>);
681}
682"#,
683 expect![[""]],
684 );
685 }
686
687 #[test]
688 fn cant_call_enum_record() {
689 check(
690 r#"
691enum E {
692 /// A Variant
693 A(i32),
694 /// Another
695 B,
696 /// And C
697 C { a: i32, b: i32 }
698}
699
700fn main() {
701 let a = E::C(<|>);
702}
703"#,
704 expect![[""]],
705 );
706 }
707
708 #[test]
709 fn fn_signature_for_call_in_macro() {
710 check(
711 r#"
712macro_rules! id { ($($tt:tt)*) => { $($tt)* } }
713fn foo() { }
714id! {
715 fn bar() { foo(<|>); }
716}
717"#,
718 expect![[r#"
719 fn foo()
720 ()
721 "#]],
722 );
723 }
724
725 #[test]
726 fn call_info_for_lambdas() {
727 check(
728 r#"
729struct S;
730fn foo(s: S) -> i32 { 92 }
731fn main() {
732 (|s| foo(s))(<|>)
733}
734 "#,
735 expect![[r#"
736 (S) -> i32
737 (<S>)
738 "#]],
739 )
740 }
741
742 #[test]
743 fn call_info_for_fn_ptr() {
744 check(
745 r#"
746fn main(f: fn(i32, f64) -> char) {
747 f(0, <|>)
748}
749 "#,
750 expect![[r#"
751 (i32, f64) -> char
752 (i32, <f64>)
753 "#]],
754 )
755 }
756}
diff --git a/crates/ide_db/src/call_info/tests.rs b/crates/ide_db/src/call_info/tests.rs
new file mode 100644
index 000000000..9335aeaa5
--- /dev/null
+++ b/crates/ide_db/src/call_info/tests.rs
@@ -0,0 +1,523 @@
1use crate::RootDatabase;
2use base_db::{fixture::ChangeFixture, FilePosition};
3use expect_test::{expect, Expect};
4use test_utils::{mark, RangeOrOffset};
5
6/// Creates analysis from a multi-file fixture, returns positions marked with <|>.
7pub(crate) fn position(ra_fixture: &str) -> (RootDatabase, FilePosition) {
8 let change_fixture = ChangeFixture::parse(ra_fixture);
9 let mut database = RootDatabase::default();
10 database.apply_change(change_fixture.change);
11 let (file_id, range_or_offset) = change_fixture.file_position.expect("expected a marker (<|>)");
12 let offset = match range_or_offset {
13 RangeOrOffset::Range(_) => panic!(),
14 RangeOrOffset::Offset(it) => it,
15 };
16 (database, FilePosition { file_id, offset })
17}
18
19fn check(ra_fixture: &str, expect: Expect) {
20 let (db, position) = position(ra_fixture);
21 let call_info = crate::call_info::call_info(&db, position);
22 let actual = match call_info {
23 Some(call_info) => {
24 let docs = match &call_info.doc {
25 None => "".to_string(),
26 Some(docs) => format!("{}\n------\n", docs.as_str()),
27 };
28 let params = call_info
29 .parameter_labels()
30 .enumerate()
31 .map(|(i, param)| {
32 if Some(i) == call_info.active_parameter {
33 format!("<{}>", param)
34 } else {
35 param.to_string()
36 }
37 })
38 .collect::<Vec<_>>()
39 .join(", ");
40 format!("{}{}\n({})\n", docs, call_info.signature, params)
41 }
42 None => String::new(),
43 };
44 expect.assert_eq(&actual);
45}
46
47#[test]
48fn test_fn_signature_two_args() {
49 check(
50 r#"
51fn foo(x: u32, y: u32) -> u32 {x + y}
52fn bar() { foo(<|>3, ); }
53"#,
54 expect![[r#"
55 fn foo(x: u32, y: u32) -> u32
56 (<x: u32>, y: u32)
57 "#]],
58 );
59 check(
60 r#"
61fn foo(x: u32, y: u32) -> u32 {x + y}
62fn bar() { foo(3<|>, ); }
63"#,
64 expect![[r#"
65 fn foo(x: u32, y: u32) -> u32
66 (<x: u32>, y: u32)
67 "#]],
68 );
69 check(
70 r#"
71fn foo(x: u32, y: u32) -> u32 {x + y}
72fn bar() { foo(3,<|> ); }
73"#,
74 expect![[r#"
75 fn foo(x: u32, y: u32) -> u32
76 (x: u32, <y: u32>)
77 "#]],
78 );
79 check(
80 r#"
81fn foo(x: u32, y: u32) -> u32 {x + y}
82fn bar() { foo(3, <|>); }
83"#,
84 expect![[r#"
85 fn foo(x: u32, y: u32) -> u32
86 (x: u32, <y: u32>)
87 "#]],
88 );
89}
90
91#[test]
92fn test_fn_signature_two_args_empty() {
93 check(
94 r#"
95fn foo(x: u32, y: u32) -> u32 {x + y}
96fn bar() { foo(<|>); }
97"#,
98 expect![[r#"
99 fn foo(x: u32, y: u32) -> u32
100 (<x: u32>, y: u32)
101 "#]],
102 );
103}
104
105#[test]
106fn test_fn_signature_two_args_first_generics() {
107 check(
108 r#"
109fn foo<T, U: Copy + Display>(x: T, y: U) -> u32
110 where T: Copy + Display, U: Debug
111{ x + y }
112
113fn bar() { foo(<|>3, ); }
114"#,
115 expect![[r#"
116 fn foo(x: i32, y: {unknown}) -> u32
117 (<x: i32>, y: {unknown})
118 "#]],
119 );
120}
121
122#[test]
123fn test_fn_signature_no_params() {
124 check(
125 r#"
126fn foo<T>() -> T where T: Copy + Display {}
127fn bar() { foo(<|>); }
128"#,
129 expect![[r#"
130 fn foo() -> {unknown}
131 ()
132 "#]],
133 );
134}
135
136#[test]
137fn test_fn_signature_for_impl() {
138 check(
139 r#"
140struct F;
141impl F { pub fn new() { } }
142fn bar() {
143 let _ : F = F::new(<|>);
144}
145"#,
146 expect![[r#"
147 fn new()
148 ()
149 "#]],
150 );
151}
152
153#[test]
154fn test_fn_signature_for_method_self() {
155 check(
156 r#"
157struct S;
158impl S { pub fn do_it(&self) {} }
159
160fn bar() {
161 let s: S = S;
162 s.do_it(<|>);
163}
164"#,
165 expect![[r#"
166 fn do_it(&self)
167 ()
168 "#]],
169 );
170}
171
172#[test]
173fn test_fn_signature_for_method_with_arg() {
174 check(
175 r#"
176struct S;
177impl S {
178 fn foo(&self, x: i32) {}
179}
180
181fn main() { S.foo(<|>); }
182"#,
183 expect![[r#"
184 fn foo(&self, x: i32)
185 (<x: i32>)
186 "#]],
187 );
188}
189
190#[test]
191fn test_fn_signature_for_method_with_arg_as_assoc_fn() {
192 check(
193 r#"
194struct S;
195impl S {
196 fn foo(&self, x: i32) {}
197}
198
199fn main() { S::foo(<|>); }
200"#,
201 expect![[r#"
202 fn foo(self: &S, x: i32)
203 (<self: &S>, x: i32)
204 "#]],
205 );
206}
207
208#[test]
209fn test_fn_signature_with_docs_simple() {
210 check(
211 r#"
212/// test
213// non-doc-comment
214fn foo(j: u32) -> u32 {
215 j
216}
217
218fn bar() {
219 let _ = foo(<|>);
220}
221"#,
222 expect![[r#"
223 test
224 ------
225 fn foo(j: u32) -> u32
226 (<j: u32>)
227 "#]],
228 );
229}
230
231#[test]
232fn test_fn_signature_with_docs() {
233 check(
234 r#"
235/// Adds one to the number given.
236///
237/// # Examples
238///
239/// ```
240/// let five = 5;
241///
242/// assert_eq!(6, my_crate::add_one(5));
243/// ```
244pub fn add_one(x: i32) -> i32 {
245 x + 1
246}
247
248pub fn do() {
249 add_one(<|>
250}"#,
251 expect![[r##"
252 Adds one to the number given.
253
254 # Examples
255
256 ```
257 let five = 5;
258
259 assert_eq!(6, my_crate::add_one(5));
260 ```
261 ------
262 fn add_one(x: i32) -> i32
263 (<x: i32>)
264 "##]],
265 );
266}
267
268#[test]
269fn test_fn_signature_with_docs_impl() {
270 check(
271 r#"
272struct addr;
273impl addr {
274 /// Adds one to the number given.
275 ///
276 /// # Examples
277 ///
278 /// ```
279 /// let five = 5;
280 ///
281 /// assert_eq!(6, my_crate::add_one(5));
282 /// ```
283 pub fn add_one(x: i32) -> i32 {
284 x + 1
285 }
286}
287
288pub fn do_it() {
289 addr {};
290 addr::add_one(<|>);
291}
292"#,
293 expect![[r##"
294 Adds one to the number given.
295
296 # Examples
297
298 ```
299 let five = 5;
300
301 assert_eq!(6, my_crate::add_one(5));
302 ```
303 ------
304 fn add_one(x: i32) -> i32
305 (<x: i32>)
306 "##]],
307 );
308}
309
310#[test]
311fn test_fn_signature_with_docs_from_actix() {
312 check(
313 r#"
314struct WriteHandler<E>;
315
316impl<E> WriteHandler<E> {
317 /// Method is called when writer emits error.
318 ///
319 /// If this method returns `ErrorAction::Continue` writer processing
320 /// continues otherwise stream processing stops.
321 fn error(&mut self, err: E, ctx: &mut Self::Context) -> Running {
322 Running::Stop
323 }
324
325 /// Method is called when writer finishes.
326 ///
327 /// By default this method stops actor's `Context`.
328 fn finished(&mut self, ctx: &mut Self::Context) {
329 ctx.stop()
330 }
331}
332
333pub fn foo(mut r: WriteHandler<()>) {
334 r.finished(<|>);
335}
336"#,
337 expect![[r#"
338 Method is called when writer finishes.
339
340 By default this method stops actor's `Context`.
341 ------
342 fn finished(&mut self, ctx: &mut {unknown})
343 (<ctx: &mut {unknown}>)
344 "#]],
345 );
346}
347
348#[test]
349fn call_info_bad_offset() {
350 mark::check!(call_info_bad_offset);
351 check(
352 r#"
353fn foo(x: u32, y: u32) -> u32 {x + y}
354fn bar() { foo <|> (3, ); }
355"#,
356 expect![[""]],
357 );
358}
359
360#[test]
361fn test_nested_method_in_lambda() {
362 check(
363 r#"
364struct Foo;
365impl Foo { fn bar(&self, _: u32) { } }
366
367fn bar(_: u32) { }
368
369fn main() {
370 let foo = Foo;
371 std::thread::spawn(move || foo.bar(<|>));
372}
373"#,
374 expect![[r#"
375 fn bar(&self, _: u32)
376 (<_: u32>)
377 "#]],
378 );
379}
380
381#[test]
382fn works_for_tuple_structs() {
383 check(
384 r#"
385/// A cool tuple struct
386struct S(u32, i32);
387fn main() {
388 let s = S(0, <|>);
389}
390"#,
391 expect![[r#"
392 A cool tuple struct
393 ------
394 struct S(u32, i32)
395 (u32, <i32>)
396 "#]],
397 );
398}
399
400#[test]
401fn generic_struct() {
402 check(
403 r#"
404struct S<T>(T);
405fn main() {
406 let s = S(<|>);
407}
408"#,
409 expect![[r#"
410 struct S({unknown})
411 (<{unknown}>)
412 "#]],
413 );
414}
415
416#[test]
417fn works_for_enum_variants() {
418 check(
419 r#"
420enum E {
421 /// A Variant
422 A(i32),
423 /// Another
424 B,
425 /// And C
426 C { a: i32, b: i32 }
427}
428
429fn main() {
430 let a = E::A(<|>);
431}
432"#,
433 expect![[r#"
434 A Variant
435 ------
436 enum E::A(i32)
437 (<i32>)
438 "#]],
439 );
440}
441
442#[test]
443fn cant_call_struct_record() {
444 check(
445 r#"
446struct S { x: u32, y: i32 }
447fn main() {
448 let s = S(<|>);
449}
450"#,
451 expect![[""]],
452 );
453}
454
455#[test]
456fn cant_call_enum_record() {
457 check(
458 r#"
459enum E {
460 /// A Variant
461 A(i32),
462 /// Another
463 B,
464 /// And C
465 C { a: i32, b: i32 }
466}
467
468fn main() {
469 let a = E::C(<|>);
470}
471"#,
472 expect![[""]],
473 );
474}
475
476#[test]
477fn fn_signature_for_call_in_macro() {
478 check(
479 r#"
480macro_rules! id { ($($tt:tt)*) => { $($tt)* } }
481fn foo() { }
482id! {
483 fn bar() { foo(<|>); }
484}
485"#,
486 expect![[r#"
487 fn foo()
488 ()
489 "#]],
490 );
491}
492
493#[test]
494fn call_info_for_lambdas() {
495 check(
496 r#"
497struct S;
498fn foo(s: S) -> i32 { 92 }
499fn main() {
500 (|s| foo(s))(<|>)
501}
502 "#,
503 expect![[r#"
504 (S) -> i32
505 (<S>)
506 "#]],
507 )
508}
509
510#[test]
511fn call_info_for_fn_ptr() {
512 check(
513 r#"
514fn main(f: fn(i32, f64) -> char) {
515 f(0, <|>)
516}
517 "#,
518 expect![[r#"
519 (i32, f64) -> char
520 (i32, <f64>)
521 "#]],
522 )
523}
diff --git a/crates/ide_db/src/helpers/insert_use.rs b/crates/ide_db/src/helpers/insert_use.rs
index 08d246c16..040843990 100644
--- a/crates/ide_db/src/helpers/insert_use.rs
+++ b/crates/ide_db/src/helpers/insert_use.rs
@@ -573,641 +573,4 @@ fn find_insert_position(
573} 573}
574 574
575#[cfg(test)] 575#[cfg(test)]
576mod tests { 576mod tests;
577 use super::*;
578
579 use test_utils::assert_eq_text;
580
581 #[test]
582 fn insert_existing() {
583 check_full("std::fs", "use std::fs;", "use std::fs;")
584 }
585
586 #[test]
587 fn insert_start() {
588 check_none(
589 "std::bar::AA",
590 r"
591use std::bar::B;
592use std::bar::D;
593use std::bar::F;
594use std::bar::G;",
595 r"
596use std::bar::AA;
597use std::bar::B;
598use std::bar::D;
599use std::bar::F;
600use std::bar::G;",
601 )
602 }
603
604 #[test]
605 fn insert_start_indent() {
606 mark::check!(insert_use_indent_after);
607 check_none(
608 "std::bar::AA",
609 r"
610 use std::bar::B;
611 use std::bar::D;",
612 r"
613 use std::bar::AA;
614 use std::bar::B;
615 use std::bar::D;",
616 )
617 }
618
619 #[test]
620 fn insert_middle() {
621 check_none(
622 "std::bar::EE",
623 r"
624use std::bar::A;
625use std::bar::D;
626use std::bar::F;
627use std::bar::G;",
628 r"
629use std::bar::A;
630use std::bar::D;
631use std::bar::EE;
632use std::bar::F;
633use std::bar::G;",
634 )
635 }
636
637 #[test]
638 fn insert_middle_indent() {
639 check_none(
640 "std::bar::EE",
641 r"
642 use std::bar::A;
643 use std::bar::D;
644 use std::bar::F;
645 use std::bar::G;",
646 r"
647 use std::bar::A;
648 use std::bar::D;
649 use std::bar::EE;
650 use std::bar::F;
651 use std::bar::G;",
652 )
653 }
654
655 #[test]
656 fn insert_end() {
657 check_none(
658 "std::bar::ZZ",
659 r"
660use std::bar::A;
661use std::bar::D;
662use std::bar::F;
663use std::bar::G;",
664 r"
665use std::bar::A;
666use std::bar::D;
667use std::bar::F;
668use std::bar::G;
669use std::bar::ZZ;",
670 )
671 }
672
673 #[test]
674 fn insert_end_indent() {
675 mark::check!(insert_use_indent_before);
676 check_none(
677 "std::bar::ZZ",
678 r"
679 use std::bar::A;
680 use std::bar::D;
681 use std::bar::F;
682 use std::bar::G;",
683 r"
684 use std::bar::A;
685 use std::bar::D;
686 use std::bar::F;
687 use std::bar::G;
688 use std::bar::ZZ;",
689 )
690 }
691
692 #[test]
693 fn insert_middle_nested() {
694 check_none(
695 "std::bar::EE",
696 r"
697use std::bar::A;
698use std::bar::{D, Z}; // example of weird imports due to user
699use std::bar::F;
700use std::bar::G;",
701 r"
702use std::bar::A;
703use std::bar::EE;
704use std::bar::{D, Z}; // example of weird imports due to user
705use std::bar::F;
706use std::bar::G;",
707 )
708 }
709
710 #[test]
711 fn insert_middle_groups() {
712 check_none(
713 "foo::bar::GG",
714 r"
715 use std::bar::A;
716 use std::bar::D;
717
718 use foo::bar::F;
719 use foo::bar::H;",
720 r"
721 use std::bar::A;
722 use std::bar::D;
723
724 use foo::bar::F;
725 use foo::bar::GG;
726 use foo::bar::H;",
727 )
728 }
729
730 #[test]
731 fn insert_first_matching_group() {
732 check_none(
733 "foo::bar::GG",
734 r"
735 use foo::bar::A;
736 use foo::bar::D;
737
738 use std;
739
740 use foo::bar::F;
741 use foo::bar::H;",
742 r"
743 use foo::bar::A;
744 use foo::bar::D;
745 use foo::bar::GG;
746
747 use std;
748
749 use foo::bar::F;
750 use foo::bar::H;",
751 )
752 }
753
754 #[test]
755 fn insert_missing_group_std() {
756 check_none(
757 "std::fmt",
758 r"
759 use foo::bar::A;
760 use foo::bar::D;",
761 r"
762 use std::fmt;
763
764 use foo::bar::A;
765 use foo::bar::D;",
766 )
767 }
768
769 #[test]
770 fn insert_missing_group_self() {
771 check_none(
772 "self::fmt",
773 r"
774use foo::bar::A;
775use foo::bar::D;",
776 r"
777use foo::bar::A;
778use foo::bar::D;
779
780use self::fmt;",
781 )
782 }
783
784 #[test]
785 fn insert_no_imports() {
786 check_full(
787 "foo::bar",
788 "fn main() {}",
789 r"use foo::bar;
790
791fn main() {}",
792 )
793 }
794
795 #[test]
796 fn insert_empty_file() {
797 // empty files will get two trailing newlines
798 // this is due to the test case insert_no_imports above
799 check_full(
800 "foo::bar",
801 "",
802 r"use foo::bar;
803
804",
805 )
806 }
807
808 #[test]
809 fn insert_empty_module() {
810 mark::check!(insert_use_no_indent_after);
811 check(
812 "foo::bar",
813 "mod x {}",
814 r"{
815 use foo::bar;
816}",
817 None,
818 true,
819 )
820 }
821
822 #[test]
823 fn insert_after_inner_attr() {
824 check_full(
825 "foo::bar",
826 r"#![allow(unused_imports)]",
827 r"#![allow(unused_imports)]
828
829use foo::bar;",
830 )
831 }
832
833 #[test]
834 fn insert_after_inner_attr2() {
835 check_full(
836 "foo::bar",
837 r"#![allow(unused_imports)]
838
839#![no_std]
840fn main() {}",
841 r"#![allow(unused_imports)]
842
843#![no_std]
844
845use foo::bar;
846fn main() {}",
847 );
848 }
849
850 #[test]
851 fn inserts_after_single_line_inner_comments() {
852 check_none(
853 "foo::bar::Baz",
854 "//! Single line inner comments do not allow any code before them.",
855 r#"//! Single line inner comments do not allow any code before them.
856
857use foo::bar::Baz;"#,
858 );
859 }
860
861 #[test]
862 fn inserts_after_multiline_inner_comments() {
863 check_none(
864 "foo::bar::Baz",
865 r#"/*! Multiline inner comments do not allow any code before them. */
866
867/*! Still an inner comment, cannot place any code before. */
868fn main() {}"#,
869 r#"/*! Multiline inner comments do not allow any code before them. */
870
871/*! Still an inner comment, cannot place any code before. */
872
873use foo::bar::Baz;
874fn main() {}"#,
875 )
876 }
877
878 #[test]
879 fn inserts_after_all_inner_items() {
880 check_none(
881 "foo::bar::Baz",
882 r#"#![allow(unused_imports)]
883/*! Multiline line comment 2 */
884
885
886//! Single line comment 1
887#![no_std]
888//! Single line comment 2
889fn main() {}"#,
890 r#"#![allow(unused_imports)]
891/*! Multiline line comment 2 */
892
893
894//! Single line comment 1
895#![no_std]
896//! Single line comment 2
897
898use foo::bar::Baz;
899fn main() {}"#,
900 )
901 }
902
903 #[test]
904 fn merge_groups() {
905 check_last("std::io", r"use std::fmt;", r"use std::{fmt, io};")
906 }
907
908 #[test]
909 fn merge_groups_last() {
910 check_last(
911 "std::io",
912 r"use std::fmt::{Result, Display};",
913 r"use std::fmt::{Result, Display};
914use std::io;",
915 )
916 }
917
918 #[test]
919 fn merge_last_into_self() {
920 check_last("foo::bar::baz", r"use foo::bar;", r"use foo::bar::{self, baz};");
921 }
922
923 #[test]
924 fn merge_groups_full() {
925 check_full(
926 "std::io",
927 r"use std::fmt::{Result, Display};",
928 r"use std::{fmt::{Result, Display}, io};",
929 )
930 }
931
932 #[test]
933 fn merge_groups_long_full() {
934 check_full(
935 "std::foo::bar::Baz",
936 r"use std::foo::bar::Qux;",
937 r"use std::foo::bar::{Baz, Qux};",
938 )
939 }
940
941 #[test]
942 fn merge_groups_long_last() {
943 check_last(
944 "std::foo::bar::Baz",
945 r"use std::foo::bar::Qux;",
946 r"use std::foo::bar::{Baz, Qux};",
947 )
948 }
949
950 #[test]
951 fn merge_groups_long_full_list() {
952 check_full(
953 "std::foo::bar::Baz",
954 r"use std::foo::bar::{Qux, Quux};",
955 r"use std::foo::bar::{Baz, Quux, Qux};",
956 )
957 }
958
959 #[test]
960 fn merge_groups_long_last_list() {
961 check_last(
962 "std::foo::bar::Baz",
963 r"use std::foo::bar::{Qux, Quux};",
964 r"use std::foo::bar::{Baz, Quux, Qux};",
965 )
966 }
967
968 #[test]
969 fn merge_groups_long_full_nested() {
970 check_full(
971 "std::foo::bar::Baz",
972 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
973 r"use std::foo::bar::{Baz, Qux, quux::{Fez, Fizz}};",
974 )
975 }
976
977 #[test]
978 fn merge_groups_long_last_nested() {
979 check_last(
980 "std::foo::bar::Baz",
981 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
982 r"use std::foo::bar::Baz;
983use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
984 )
985 }
986
987 #[test]
988 fn merge_groups_full_nested_deep() {
989 check_full(
990 "std::foo::bar::quux::Baz",
991 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
992 r"use std::foo::bar::{Qux, quux::{Baz, Fez, Fizz}};",
993 )
994 }
995
996 #[test]
997 fn merge_groups_full_nested_long() {
998 check_full(
999 "std::foo::bar::Baz",
1000 r"use std::{foo::bar::Qux};",
1001 r"use std::{foo::bar::{Baz, Qux}};",
1002 );
1003 }
1004
1005 #[test]
1006 fn merge_groups_last_nested_long() {
1007 check_full(
1008 "std::foo::bar::Baz",
1009 r"use std::{foo::bar::Qux};",
1010 r"use std::{foo::bar::{Baz, Qux}};",
1011 );
1012 }
1013
1014 #[test]
1015 fn merge_groups_skip_pub() {
1016 check_full(
1017 "std::io",
1018 r"pub use std::fmt::{Result, Display};",
1019 r"pub use std::fmt::{Result, Display};
1020use std::io;",
1021 )
1022 }
1023
1024 #[test]
1025 fn merge_groups_skip_pub_crate() {
1026 check_full(
1027 "std::io",
1028 r"pub(crate) use std::fmt::{Result, Display};",
1029 r"pub(crate) use std::fmt::{Result, Display};
1030use std::io;",
1031 )
1032 }
1033
1034 #[test]
1035 #[ignore] // FIXME: Support this
1036 fn split_out_merge() {
1037 check_last(
1038 "std::fmt::Result",
1039 r"use std::{fmt, io};",
1040 r"use std::fmt::{self, Result};
1041use std::io;",
1042 )
1043 }
1044
1045 #[test]
1046 fn merge_into_module_import() {
1047 check_full(
1048 "std::fmt::Result",
1049 r"use std::{fmt, io};",
1050 r"use std::{fmt::{self, Result}, io};",
1051 )
1052 }
1053
1054 #[test]
1055 fn merge_groups_self() {
1056 check_full("std::fmt::Debug", r"use std::fmt;", r"use std::fmt::{self, Debug};")
1057 }
1058
1059 #[test]
1060 fn merge_mod_into_glob() {
1061 check_full(
1062 "token::TokenKind",
1063 r"use token::TokenKind::*;",
1064 r"use token::TokenKind::{*, self};",
1065 )
1066 // FIXME: have it emit `use token::TokenKind::{self, *}`?
1067 }
1068
1069 #[test]
1070 fn merge_self_glob() {
1071 check_full("self", r"use self::*;", r"use self::{*, self};")
1072 // FIXME: have it emit `use {self, *}`?
1073 }
1074
1075 #[test]
1076 fn merge_glob_nested() {
1077 check_full(
1078 "foo::bar::quux::Fez",
1079 r"use foo::bar::{Baz, quux::*};",
1080 r"use foo::bar::{Baz, quux::{self::*, Fez}};",
1081 )
1082 }
1083
1084 #[test]
1085 fn merge_nested_considers_first_segments() {
1086 check_full(
1087 "hir_ty::display::write_bounds_like_dyn_trait",
1088 r"use hir_ty::{autoderef, display::{HirDisplayError, HirFormatter}, method_resolution};",
1089 r"use hir_ty::{autoderef, display::{HirDisplayError, HirFormatter, write_bounds_like_dyn_trait}, method_resolution};",
1090 );
1091 }
1092
1093 #[test]
1094 fn skip_merge_last_too_long() {
1095 check_last(
1096 "foo::bar",
1097 r"use foo::bar::baz::Qux;",
1098 r"use foo::bar;
1099use foo::bar::baz::Qux;",
1100 );
1101 }
1102
1103 #[test]
1104 fn skip_merge_last_too_long2() {
1105 check_last(
1106 "foo::bar::baz::Qux",
1107 r"use foo::bar;",
1108 r"use foo::bar;
1109use foo::bar::baz::Qux;",
1110 );
1111 }
1112
1113 #[test]
1114 fn insert_short_before_long() {
1115 check_none(
1116 "foo::bar",
1117 r"use foo::bar::baz::Qux;",
1118 r"use foo::bar;
1119use foo::bar::baz::Qux;",
1120 );
1121 }
1122
1123 #[test]
1124 fn merge_last_fail() {
1125 check_merge_only_fail(
1126 r"use foo::bar::{baz::{Qux, Fez}};",
1127 r"use foo::bar::{baaz::{Quux, Feez}};",
1128 MergeBehaviour::Last,
1129 );
1130 }
1131
1132 #[test]
1133 fn merge_last_fail1() {
1134 check_merge_only_fail(
1135 r"use foo::bar::{baz::{Qux, Fez}};",
1136 r"use foo::bar::baaz::{Quux, Feez};",
1137 MergeBehaviour::Last,
1138 );
1139 }
1140
1141 #[test]
1142 fn merge_last_fail2() {
1143 check_merge_only_fail(
1144 r"use foo::bar::baz::{Qux, Fez};",
1145 r"use foo::bar::{baaz::{Quux, Feez}};",
1146 MergeBehaviour::Last,
1147 );
1148 }
1149
1150 #[test]
1151 fn merge_last_fail3() {
1152 check_merge_only_fail(
1153 r"use foo::bar::baz::{Qux, Fez};",
1154 r"use foo::bar::baaz::{Quux, Feez};",
1155 MergeBehaviour::Last,
1156 );
1157 }
1158
1159 fn check(
1160 path: &str,
1161 ra_fixture_before: &str,
1162 ra_fixture_after: &str,
1163 mb: Option<MergeBehaviour>,
1164 module: bool,
1165 ) {
1166 let mut syntax = ast::SourceFile::parse(ra_fixture_before).tree().syntax().clone();
1167 if module {
1168 syntax = syntax.descendants().find_map(ast::Module::cast).unwrap().syntax().clone();
1169 }
1170 let file = super::ImportScope::from(syntax).unwrap();
1171 let path = ast::SourceFile::parse(&format!("use {};", path))
1172 .tree()
1173 .syntax()
1174 .descendants()
1175 .find_map(ast::Path::cast)
1176 .unwrap();
1177
1178 let rewriter = insert_use(&file, path, mb);
1179 let result = rewriter.rewrite(file.as_syntax_node()).to_string();
1180 assert_eq_text!(&result, ra_fixture_after);
1181 }
1182
1183 fn check_full(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
1184 check(path, ra_fixture_before, ra_fixture_after, Some(MergeBehaviour::Full), false)
1185 }
1186
1187 fn check_last(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
1188 check(path, ra_fixture_before, ra_fixture_after, Some(MergeBehaviour::Last), false)
1189 }
1190
1191 fn check_none(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
1192 check(path, ra_fixture_before, ra_fixture_after, None, false)
1193 }
1194
1195 fn check_merge_only_fail(ra_fixture0: &str, ra_fixture1: &str, mb: MergeBehaviour) {
1196 let use0 = ast::SourceFile::parse(ra_fixture0)
1197 .tree()
1198 .syntax()
1199 .descendants()
1200 .find_map(ast::Use::cast)
1201 .unwrap();
1202
1203 let use1 = ast::SourceFile::parse(ra_fixture1)
1204 .tree()
1205 .syntax()
1206 .descendants()
1207 .find_map(ast::Use::cast)
1208 .unwrap();
1209
1210 let result = try_merge_imports(&use0, &use1, mb);
1211 assert_eq!(result.map(|u| u.to_string()), None);
1212 }
1213}
diff --git a/crates/ide_db/src/helpers/insert_use/tests.rs b/crates/ide_db/src/helpers/insert_use/tests.rs
new file mode 100644
index 000000000..86bfa5b41
--- /dev/null
+++ b/crates/ide_db/src/helpers/insert_use/tests.rs
@@ -0,0 +1,620 @@
1use super::*;
2
3use test_utils::assert_eq_text;
4
5#[test]
6fn insert_existing() {
7 check_full("std::fs", "use std::fs;", "use std::fs;")
8}
9
10#[test]
11fn insert_start() {
12 check_none(
13 "std::bar::AA",
14 r"
15use std::bar::B;
16use std::bar::D;
17use std::bar::F;
18use std::bar::G;",
19 r"
20use std::bar::AA;
21use std::bar::B;
22use std::bar::D;
23use std::bar::F;
24use std::bar::G;",
25 )
26}
27
28#[test]
29fn insert_start_indent() {
30 mark::check!(insert_use_indent_after);
31 check_none(
32 "std::bar::AA",
33 r"
34 use std::bar::B;
35 use std::bar::D;",
36 r"
37 use std::bar::AA;
38 use std::bar::B;
39 use std::bar::D;",
40 )
41}
42
43#[test]
44fn insert_middle() {
45 check_none(
46 "std::bar::EE",
47 r"
48use std::bar::A;
49use std::bar::D;
50use std::bar::F;
51use std::bar::G;",
52 r"
53use std::bar::A;
54use std::bar::D;
55use std::bar::EE;
56use std::bar::F;
57use std::bar::G;",
58 )
59}
60
61#[test]
62fn insert_middle_indent() {
63 check_none(
64 "std::bar::EE",
65 r"
66 use std::bar::A;
67 use std::bar::D;
68 use std::bar::F;
69 use std::bar::G;",
70 r"
71 use std::bar::A;
72 use std::bar::D;
73 use std::bar::EE;
74 use std::bar::F;
75 use std::bar::G;",
76 )
77}
78
79#[test]
80fn insert_end() {
81 check_none(
82 "std::bar::ZZ",
83 r"
84use std::bar::A;
85use std::bar::D;
86use std::bar::F;
87use std::bar::G;",
88 r"
89use std::bar::A;
90use std::bar::D;
91use std::bar::F;
92use std::bar::G;
93use std::bar::ZZ;",
94 )
95}
96
97#[test]
98fn insert_end_indent() {
99 mark::check!(insert_use_indent_before);
100 check_none(
101 "std::bar::ZZ",
102 r"
103 use std::bar::A;
104 use std::bar::D;
105 use std::bar::F;
106 use std::bar::G;",
107 r"
108 use std::bar::A;
109 use std::bar::D;
110 use std::bar::F;
111 use std::bar::G;
112 use std::bar::ZZ;",
113 )
114}
115
116#[test]
117fn insert_middle_nested() {
118 check_none(
119 "std::bar::EE",
120 r"
121use std::bar::A;
122use std::bar::{D, Z}; // example of weird imports due to user
123use std::bar::F;
124use std::bar::G;",
125 r"
126use std::bar::A;
127use std::bar::EE;
128use std::bar::{D, Z}; // example of weird imports due to user
129use std::bar::F;
130use std::bar::G;",
131 )
132}
133
134#[test]
135fn insert_middle_groups() {
136 check_none(
137 "foo::bar::GG",
138 r"
139 use std::bar::A;
140 use std::bar::D;
141
142 use foo::bar::F;
143 use foo::bar::H;",
144 r"
145 use std::bar::A;
146 use std::bar::D;
147
148 use foo::bar::F;
149 use foo::bar::GG;
150 use foo::bar::H;",
151 )
152}
153
154#[test]
155fn insert_first_matching_group() {
156 check_none(
157 "foo::bar::GG",
158 r"
159 use foo::bar::A;
160 use foo::bar::D;
161
162 use std;
163
164 use foo::bar::F;
165 use foo::bar::H;",
166 r"
167 use foo::bar::A;
168 use foo::bar::D;
169 use foo::bar::GG;
170
171 use std;
172
173 use foo::bar::F;
174 use foo::bar::H;",
175 )
176}
177
178#[test]
179fn insert_missing_group_std() {
180 check_none(
181 "std::fmt",
182 r"
183 use foo::bar::A;
184 use foo::bar::D;",
185 r"
186 use std::fmt;
187
188 use foo::bar::A;
189 use foo::bar::D;",
190 )
191}
192
193#[test]
194fn insert_missing_group_self() {
195 check_none(
196 "self::fmt",
197 r"
198use foo::bar::A;
199use foo::bar::D;",
200 r"
201use foo::bar::A;
202use foo::bar::D;
203
204use self::fmt;",
205 )
206}
207
208#[test]
209fn insert_no_imports() {
210 check_full(
211 "foo::bar",
212 "fn main() {}",
213 r"use foo::bar;
214
215fn main() {}",
216 )
217}
218
219#[test]
220fn insert_empty_file() {
221 // empty files will get two trailing newlines
222 // this is due to the test case insert_no_imports above
223 check_full(
224 "foo::bar",
225 "",
226 r"use foo::bar;
227
228",
229 )
230}
231
232#[test]
233fn insert_empty_module() {
234 mark::check!(insert_use_no_indent_after);
235 check(
236 "foo::bar",
237 "mod x {}",
238 r"{
239 use foo::bar;
240}",
241 None,
242 true,
243 )
244}
245
246#[test]
247fn insert_after_inner_attr() {
248 check_full(
249 "foo::bar",
250 r"#![allow(unused_imports)]",
251 r"#![allow(unused_imports)]
252
253use foo::bar;",
254 )
255}
256
257#[test]
258fn insert_after_inner_attr2() {
259 check_full(
260 "foo::bar",
261 r"#![allow(unused_imports)]
262
263#![no_std]
264fn main() {}",
265 r"#![allow(unused_imports)]
266
267#![no_std]
268
269use foo::bar;
270fn main() {}",
271 );
272}
273
274#[test]
275fn inserts_after_single_line_inner_comments() {
276 check_none(
277 "foo::bar::Baz",
278 "//! Single line inner comments do not allow any code before them.",
279 r#"//! Single line inner comments do not allow any code before them.
280
281use foo::bar::Baz;"#,
282 );
283}
284
285#[test]
286fn inserts_after_multiline_inner_comments() {
287 check_none(
288 "foo::bar::Baz",
289 r#"/*! Multiline inner comments do not allow any code before them. */
290
291/*! Still an inner comment, cannot place any code before. */
292fn main() {}"#,
293 r#"/*! Multiline inner comments do not allow any code before them. */
294
295/*! Still an inner comment, cannot place any code before. */
296
297use foo::bar::Baz;
298fn main() {}"#,
299 )
300}
301
302#[test]
303fn inserts_after_all_inner_items() {
304 check_none(
305 "foo::bar::Baz",
306 r#"#![allow(unused_imports)]
307/*! Multiline line comment 2 */
308
309
310//! Single line comment 1
311#![no_std]
312//! Single line comment 2
313fn main() {}"#,
314 r#"#![allow(unused_imports)]
315/*! Multiline line comment 2 */
316
317
318//! Single line comment 1
319#![no_std]
320//! Single line comment 2
321
322use foo::bar::Baz;
323fn main() {}"#,
324 )
325}
326
327#[test]
328fn merge_groups() {
329 check_last("std::io", r"use std::fmt;", r"use std::{fmt, io};")
330}
331
332#[test]
333fn merge_groups_last() {
334 check_last(
335 "std::io",
336 r"use std::fmt::{Result, Display};",
337 r"use std::fmt::{Result, Display};
338use std::io;",
339 )
340}
341
342#[test]
343fn merge_last_into_self() {
344 check_last("foo::bar::baz", r"use foo::bar;", r"use foo::bar::{self, baz};");
345}
346
347#[test]
348fn merge_groups_full() {
349 check_full(
350 "std::io",
351 r"use std::fmt::{Result, Display};",
352 r"use std::{fmt::{Result, Display}, io};",
353 )
354}
355
356#[test]
357fn merge_groups_long_full() {
358 check_full("std::foo::bar::Baz", r"use std::foo::bar::Qux;", r"use std::foo::bar::{Baz, Qux};")
359}
360
361#[test]
362fn merge_groups_long_last() {
363 check_last("std::foo::bar::Baz", r"use std::foo::bar::Qux;", r"use std::foo::bar::{Baz, Qux};")
364}
365
366#[test]
367fn merge_groups_long_full_list() {
368 check_full(
369 "std::foo::bar::Baz",
370 r"use std::foo::bar::{Qux, Quux};",
371 r"use std::foo::bar::{Baz, Quux, Qux};",
372 )
373}
374
375#[test]
376fn merge_groups_long_last_list() {
377 check_last(
378 "std::foo::bar::Baz",
379 r"use std::foo::bar::{Qux, Quux};",
380 r"use std::foo::bar::{Baz, Quux, Qux};",
381 )
382}
383
384#[test]
385fn merge_groups_long_full_nested() {
386 check_full(
387 "std::foo::bar::Baz",
388 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
389 r"use std::foo::bar::{Baz, Qux, quux::{Fez, Fizz}};",
390 )
391}
392
393#[test]
394fn merge_groups_long_last_nested() {
395 check_last(
396 "std::foo::bar::Baz",
397 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
398 r"use std::foo::bar::Baz;
399use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
400 )
401}
402
403#[test]
404fn merge_groups_full_nested_deep() {
405 check_full(
406 "std::foo::bar::quux::Baz",
407 r"use std::foo::bar::{Qux, quux::{Fez, Fizz}};",
408 r"use std::foo::bar::{Qux, quux::{Baz, Fez, Fizz}};",
409 )
410}
411
412#[test]
413fn merge_groups_full_nested_long() {
414 check_full(
415 "std::foo::bar::Baz",
416 r"use std::{foo::bar::Qux};",
417 r"use std::{foo::bar::{Baz, Qux}};",
418 );
419}
420
421#[test]
422fn merge_groups_last_nested_long() {
423 check_full(
424 "std::foo::bar::Baz",
425 r"use std::{foo::bar::Qux};",
426 r"use std::{foo::bar::{Baz, Qux}};",
427 );
428}
429
430#[test]
431fn merge_groups_skip_pub() {
432 check_full(
433 "std::io",
434 r"pub use std::fmt::{Result, Display};",
435 r"pub use std::fmt::{Result, Display};
436use std::io;",
437 )
438}
439
440#[test]
441fn merge_groups_skip_pub_crate() {
442 check_full(
443 "std::io",
444 r"pub(crate) use std::fmt::{Result, Display};",
445 r"pub(crate) use std::fmt::{Result, Display};
446use std::io;",
447 )
448}
449
450#[test]
451#[ignore] // FIXME: Support this
452fn split_out_merge() {
453 check_last(
454 "std::fmt::Result",
455 r"use std::{fmt, io};",
456 r"use std::fmt::{self, Result};
457use std::io;",
458 )
459}
460
461#[test]
462fn merge_into_module_import() {
463 check_full("std::fmt::Result", r"use std::{fmt, io};", r"use std::{fmt::{self, Result}, io};")
464}
465
466#[test]
467fn merge_groups_self() {
468 check_full("std::fmt::Debug", r"use std::fmt;", r"use std::fmt::{self, Debug};")
469}
470
471#[test]
472fn merge_mod_into_glob() {
473 check_full("token::TokenKind", r"use token::TokenKind::*;", r"use token::TokenKind::{*, self};")
474 // FIXME: have it emit `use token::TokenKind::{self, *}`?
475}
476
477#[test]
478fn merge_self_glob() {
479 check_full("self", r"use self::*;", r"use self::{*, self};")
480 // FIXME: have it emit `use {self, *}`?
481}
482
483#[test]
484fn merge_glob_nested() {
485 check_full(
486 "foo::bar::quux::Fez",
487 r"use foo::bar::{Baz, quux::*};",
488 r"use foo::bar::{Baz, quux::{self::*, Fez}};",
489 )
490}
491
492#[test]
493fn merge_nested_considers_first_segments() {
494 check_full(
495 "hir_ty::display::write_bounds_like_dyn_trait",
496 r"use hir_ty::{autoderef, display::{HirDisplayError, HirFormatter}, method_resolution};",
497 r"use hir_ty::{autoderef, display::{HirDisplayError, HirFormatter, write_bounds_like_dyn_trait}, method_resolution};",
498 );
499}
500
501#[test]
502fn skip_merge_last_too_long() {
503 check_last(
504 "foo::bar",
505 r"use foo::bar::baz::Qux;",
506 r"use foo::bar;
507use foo::bar::baz::Qux;",
508 );
509}
510
511#[test]
512fn skip_merge_last_too_long2() {
513 check_last(
514 "foo::bar::baz::Qux",
515 r"use foo::bar;",
516 r"use foo::bar;
517use foo::bar::baz::Qux;",
518 );
519}
520
521#[test]
522fn insert_short_before_long() {
523 check_none(
524 "foo::bar",
525 r"use foo::bar::baz::Qux;",
526 r"use foo::bar;
527use foo::bar::baz::Qux;",
528 );
529}
530
531#[test]
532fn merge_last_fail() {
533 check_merge_only_fail(
534 r"use foo::bar::{baz::{Qux, Fez}};",
535 r"use foo::bar::{baaz::{Quux, Feez}};",
536 MergeBehaviour::Last,
537 );
538}
539
540#[test]
541fn merge_last_fail1() {
542 check_merge_only_fail(
543 r"use foo::bar::{baz::{Qux, Fez}};",
544 r"use foo::bar::baaz::{Quux, Feez};",
545 MergeBehaviour::Last,
546 );
547}
548
549#[test]
550fn merge_last_fail2() {
551 check_merge_only_fail(
552 r"use foo::bar::baz::{Qux, Fez};",
553 r"use foo::bar::{baaz::{Quux, Feez}};",
554 MergeBehaviour::Last,
555 );
556}
557
558#[test]
559fn merge_last_fail3() {
560 check_merge_only_fail(
561 r"use foo::bar::baz::{Qux, Fez};",
562 r"use foo::bar::baaz::{Quux, Feez};",
563 MergeBehaviour::Last,
564 );
565}
566
567fn check(
568 path: &str,
569 ra_fixture_before: &str,
570 ra_fixture_after: &str,
571 mb: Option<MergeBehaviour>,
572 module: bool,
573) {
574 let mut syntax = ast::SourceFile::parse(ra_fixture_before).tree().syntax().clone();
575 if module {
576 syntax = syntax.descendants().find_map(ast::Module::cast).unwrap().syntax().clone();
577 }
578 let file = super::ImportScope::from(syntax).unwrap();
579 let path = ast::SourceFile::parse(&format!("use {};", path))
580 .tree()
581 .syntax()
582 .descendants()
583 .find_map(ast::Path::cast)
584 .unwrap();
585
586 let rewriter = insert_use(&file, path, mb);
587 let result = rewriter.rewrite(file.as_syntax_node()).to_string();
588 assert_eq_text!(&result, ra_fixture_after);
589}
590
591fn check_full(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
592 check(path, ra_fixture_before, ra_fixture_after, Some(MergeBehaviour::Full), false)
593}
594
595fn check_last(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
596 check(path, ra_fixture_before, ra_fixture_after, Some(MergeBehaviour::Last), false)
597}
598
599fn check_none(path: &str, ra_fixture_before: &str, ra_fixture_after: &str) {
600 check(path, ra_fixture_before, ra_fixture_after, None, false)
601}
602
603fn check_merge_only_fail(ra_fixture0: &str, ra_fixture1: &str, mb: MergeBehaviour) {
604 let use0 = ast::SourceFile::parse(ra_fixture0)
605 .tree()
606 .syntax()
607 .descendants()
608 .find_map(ast::Use::cast)
609 .unwrap();
610
611 let use1 = ast::SourceFile::parse(ra_fixture1)
612 .tree()
613 .syntax()
614 .descendants()
615 .find_map(ast::Use::cast)
616 .unwrap();
617
618 let result = try_merge_imports(&use0, &use1, mb);
619 assert_eq!(result.map(|u| u.to_string()), None);
620}
diff --git a/crates/ide_db/src/line_index.rs b/crates/ide_db/src/line_index.rs
index a381f7fb8..41226305e 100644
--- a/crates/ide_db/src/line_index.rs
+++ b/crates/ide_db/src/line_index.rs
@@ -149,133 +149,4 @@ impl LineIndex {
149} 149}
150 150
151#[cfg(test)] 151#[cfg(test)]
152mod tests { 152mod tests;
153 use super::*;
154
155 #[test]
156 fn test_line_index() {
157 let text = "hello\nworld";
158 let index = LineIndex::new(text);
159 assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 });
160 assert_eq!(index.line_col(1.into()), LineCol { line: 0, col_utf16: 1 });
161 assert_eq!(index.line_col(5.into()), LineCol { line: 0, col_utf16: 5 });
162 assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 0 });
163 assert_eq!(index.line_col(7.into()), LineCol { line: 1, col_utf16: 1 });
164 assert_eq!(index.line_col(8.into()), LineCol { line: 1, col_utf16: 2 });
165 assert_eq!(index.line_col(10.into()), LineCol { line: 1, col_utf16: 4 });
166 assert_eq!(index.line_col(11.into()), LineCol { line: 1, col_utf16: 5 });
167 assert_eq!(index.line_col(12.into()), LineCol { line: 1, col_utf16: 6 });
168
169 let text = "\nhello\nworld";
170 let index = LineIndex::new(text);
171 assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 });
172 assert_eq!(index.line_col(1.into()), LineCol { line: 1, col_utf16: 0 });
173 assert_eq!(index.line_col(2.into()), LineCol { line: 1, col_utf16: 1 });
174 assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 5 });
175 assert_eq!(index.line_col(7.into()), LineCol { line: 2, col_utf16: 0 });
176 }
177
178 #[test]
179 fn test_char_len() {
180 assert_eq!('メ'.len_utf8(), 3);
181 assert_eq!('メ'.len_utf16(), 1);
182 }
183
184 #[test]
185 fn test_empty_index() {
186 let col_index = LineIndex::new(
187 "
188const C: char = 'x';
189",
190 );
191 assert_eq!(col_index.utf16_lines.len(), 0);
192 }
193
194 #[test]
195 fn test_single_char() {
196 let col_index = LineIndex::new(
197 "
198const C: char = 'メ';
199",
200 );
201
202 assert_eq!(col_index.utf16_lines.len(), 1);
203 assert_eq!(col_index.utf16_lines[&1].len(), 1);
204 assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() });
205
206 // UTF-8 to UTF-16, no changes
207 assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15);
208
209 // UTF-8 to UTF-16
210 assert_eq!(col_index.utf8_to_utf16_col(1, 22.into()), 20);
211
212 // UTF-16 to UTF-8, no changes
213 assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15));
214
215 // UTF-16 to UTF-8
216 assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21));
217
218 let col_index = LineIndex::new("a𐐏b");
219 assert_eq!(col_index.utf16_to_utf8_col(0, 3), TextSize::from(5));
220 }
221
222 #[test]
223 fn test_string() {
224 let col_index = LineIndex::new(
225 "
226const C: char = \"メ メ\";
227",
228 );
229
230 assert_eq!(col_index.utf16_lines.len(), 1);
231 assert_eq!(col_index.utf16_lines[&1].len(), 2);
232 assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() });
233 assert_eq!(col_index.utf16_lines[&1][1], Utf16Char { start: 21.into(), end: 24.into() });
234
235 // UTF-8 to UTF-16
236 assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15);
237
238 assert_eq!(col_index.utf8_to_utf16_col(1, 21.into()), 19);
239 assert_eq!(col_index.utf8_to_utf16_col(1, 25.into()), 21);
240
241 assert!(col_index.utf8_to_utf16_col(2, 15.into()) == 15);
242
243 // UTF-16 to UTF-8
244 assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15));
245
246 // メ UTF-8: 0xE3 0x83 0xA1, UTF-16: 0x30E1
247 assert_eq!(col_index.utf16_to_utf8_col(1, 17), TextSize::from(17)); // first メ at 17..20
248 assert_eq!(col_index.utf16_to_utf8_col(1, 18), TextSize::from(20)); // space
249 assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21)); // second メ at 21..24
250
251 assert_eq!(col_index.utf16_to_utf8_col(2, 15), TextSize::from(15));
252 }
253
254 #[test]
255 fn test_splitlines() {
256 fn r(lo: u32, hi: u32) -> TextRange {
257 TextRange::new(lo.into(), hi.into())
258 }
259
260 let text = "a\nbb\nccc\n";
261 let line_index = LineIndex::new(text);
262
263 let actual = line_index.lines(r(0, 9)).collect::<Vec<_>>();
264 let expected = vec![r(0, 2), r(2, 5), r(5, 9)];
265 assert_eq!(actual, expected);
266
267 let text = "";
268 let line_index = LineIndex::new(text);
269
270 let actual = line_index.lines(r(0, 0)).collect::<Vec<_>>();
271 let expected = vec![];
272 assert_eq!(actual, expected);
273
274 let text = "\n";
275 let line_index = LineIndex::new(text);
276
277 let actual = line_index.lines(r(0, 1)).collect::<Vec<_>>();
278 let expected = vec![r(0, 1)];
279 assert_eq!(actual, expected)
280 }
281}
diff --git a/crates/ide_db/src/line_index/tests.rs b/crates/ide_db/src/line_index/tests.rs
new file mode 100644
index 000000000..05f7484e8
--- /dev/null
+++ b/crates/ide_db/src/line_index/tests.rs
@@ -0,0 +1,128 @@
1use super::*;
2
3#[test]
4fn test_line_index() {
5 let text = "hello\nworld";
6 let index = LineIndex::new(text);
7 assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 });
8 assert_eq!(index.line_col(1.into()), LineCol { line: 0, col_utf16: 1 });
9 assert_eq!(index.line_col(5.into()), LineCol { line: 0, col_utf16: 5 });
10 assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 0 });
11 assert_eq!(index.line_col(7.into()), LineCol { line: 1, col_utf16: 1 });
12 assert_eq!(index.line_col(8.into()), LineCol { line: 1, col_utf16: 2 });
13 assert_eq!(index.line_col(10.into()), LineCol { line: 1, col_utf16: 4 });
14 assert_eq!(index.line_col(11.into()), LineCol { line: 1, col_utf16: 5 });
15 assert_eq!(index.line_col(12.into()), LineCol { line: 1, col_utf16: 6 });
16
17 let text = "\nhello\nworld";
18 let index = LineIndex::new(text);
19 assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 });
20 assert_eq!(index.line_col(1.into()), LineCol { line: 1, col_utf16: 0 });
21 assert_eq!(index.line_col(2.into()), LineCol { line: 1, col_utf16: 1 });
22 assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 5 });
23 assert_eq!(index.line_col(7.into()), LineCol { line: 2, col_utf16: 0 });
24}
25
26#[test]
27fn test_char_len() {
28 assert_eq!('メ'.len_utf8(), 3);
29 assert_eq!('メ'.len_utf16(), 1);
30}
31
32#[test]
33fn test_empty_index() {
34 let col_index = LineIndex::new(
35 "
36const C: char = 'x';
37",
38 );
39 assert_eq!(col_index.utf16_lines.len(), 0);
40}
41
42#[test]
43fn test_single_char() {
44 let col_index = LineIndex::new(
45 "
46const C: char = 'メ';
47",
48 );
49
50 assert_eq!(col_index.utf16_lines.len(), 1);
51 assert_eq!(col_index.utf16_lines[&1].len(), 1);
52 assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() });
53
54 // UTF-8 to UTF-16, no changes
55 assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15);
56
57 // UTF-8 to UTF-16
58 assert_eq!(col_index.utf8_to_utf16_col(1, 22.into()), 20);
59
60 // UTF-16 to UTF-8, no changes
61 assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15));
62
63 // UTF-16 to UTF-8
64 assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21));
65
66 let col_index = LineIndex::new("a𐐏b");
67 assert_eq!(col_index.utf16_to_utf8_col(0, 3), TextSize::from(5));
68}
69
70#[test]
71fn test_string() {
72 let col_index = LineIndex::new(
73 "
74const C: char = \"メ メ\";
75",
76 );
77
78 assert_eq!(col_index.utf16_lines.len(), 1);
79 assert_eq!(col_index.utf16_lines[&1].len(), 2);
80 assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() });
81 assert_eq!(col_index.utf16_lines[&1][1], Utf16Char { start: 21.into(), end: 24.into() });
82
83 // UTF-8 to UTF-16
84 assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15);
85
86 assert_eq!(col_index.utf8_to_utf16_col(1, 21.into()), 19);
87 assert_eq!(col_index.utf8_to_utf16_col(1, 25.into()), 21);
88
89 assert!(col_index.utf8_to_utf16_col(2, 15.into()) == 15);
90
91 // UTF-16 to UTF-8
92 assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15));
93
94 // メ UTF-8: 0xE3 0x83 0xA1, UTF-16: 0x30E1
95 assert_eq!(col_index.utf16_to_utf8_col(1, 17), TextSize::from(17)); // first メ at 17..20
96 assert_eq!(col_index.utf16_to_utf8_col(1, 18), TextSize::from(20)); // space
97 assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21)); // second メ at 21..24
98
99 assert_eq!(col_index.utf16_to_utf8_col(2, 15), TextSize::from(15));
100}
101
102#[test]
103fn test_splitlines() {
104 fn r(lo: u32, hi: u32) -> TextRange {
105 TextRange::new(lo.into(), hi.into())
106 }
107
108 let text = "a\nbb\nccc\n";
109 let line_index = LineIndex::new(text);
110
111 let actual = line_index.lines(r(0, 9)).collect::<Vec<_>>();
112 let expected = vec![r(0, 2), r(2, 5), r(5, 9)];
113 assert_eq!(actual, expected);
114
115 let text = "";
116 let line_index = LineIndex::new(text);
117
118 let actual = line_index.lines(r(0, 0)).collect::<Vec<_>>();
119 let expected = vec![];
120 assert_eq!(actual, expected);
121
122 let text = "\n";
123 let line_index = LineIndex::new(text);
124
125 let actual = line_index.lines(r(0, 1)).collect::<Vec<_>>();
126 let expected = vec![r(0, 1)];
127 assert_eq!(actual, expected)
128}
diff --git a/crates/ide_db/src/traits.rs b/crates/ide_db/src/traits.rs
index f57b6dd91..78a43f587 100644
--- a/crates/ide_db/src/traits.rs
+++ b/crates/ide_db/src/traits.rs
@@ -78,150 +78,4 @@ pub fn get_missing_assoc_items(
78} 78}
79 79
80#[cfg(test)] 80#[cfg(test)]
81mod tests { 81mod tests;
82 use crate::RootDatabase;
83 use base_db::{fixture::ChangeFixture, FilePosition};
84 use expect_test::{expect, Expect};
85 use hir::Semantics;
86 use syntax::ast::{self, AstNode};
87 use test_utils::RangeOrOffset;
88
89 /// Creates analysis from a multi-file fixture, returns positions marked with <|>.
90 pub(crate) fn position(ra_fixture: &str) -> (RootDatabase, FilePosition) {
91 let change_fixture = ChangeFixture::parse(ra_fixture);
92 let mut database = RootDatabase::default();
93 database.apply_change(change_fixture.change);
94 let (file_id, range_or_offset) =
95 change_fixture.file_position.expect("expected a marker (<|>)");
96 let offset = match range_or_offset {
97 RangeOrOffset::Range(_) => panic!(),
98 RangeOrOffset::Offset(it) => it,
99 };
100 (database, FilePosition { file_id, offset })
101 }
102
103 fn check_trait(ra_fixture: &str, expect: Expect) {
104 let (db, position) = position(ra_fixture);
105 let sema = Semantics::new(&db);
106 let file = sema.parse(position.file_id);
107 let impl_block: ast::Impl =
108 sema.find_node_at_offset_with_descend(file.syntax(), position.offset).unwrap();
109 let trait_ = crate::traits::resolve_target_trait(&sema, &impl_block);
110 let actual = match trait_ {
111 Some(trait_) => trait_.name(&db).to_string(),
112 None => String::new(),
113 };
114 expect.assert_eq(&actual);
115 }
116
117 fn check_missing_assoc(ra_fixture: &str, expect: Expect) {
118 let (db, position) = position(ra_fixture);
119 let sema = Semantics::new(&db);
120 let file = sema.parse(position.file_id);
121 let impl_block: ast::Impl =
122 sema.find_node_at_offset_with_descend(file.syntax(), position.offset).unwrap();
123 let items = crate::traits::get_missing_assoc_items(&sema, &impl_block);
124 let actual = items
125 .into_iter()
126 .map(|item| item.name(&db).unwrap().to_string())
127 .collect::<Vec<_>>()
128 .join("\n");
129 expect.assert_eq(&actual);
130 }
131
132 #[test]
133 fn resolve_trait() {
134 check_trait(
135 r#"
136pub trait Foo {
137 fn bar();
138}
139impl Foo for u8 {
140 <|>
141}
142 "#,
143 expect![["Foo"]],
144 );
145 check_trait(
146 r#"
147pub trait Foo {
148 fn bar();
149}
150impl Foo for u8 {
151 fn bar() {
152 fn baz() {
153 <|>
154 }
155 baz();
156 }
157}
158 "#,
159 expect![["Foo"]],
160 );
161 check_trait(
162 r#"
163pub trait Foo {
164 fn bar();
165}
166pub struct Bar;
167impl Bar {
168 <|>
169}
170 "#,
171 expect![[""]],
172 );
173 }
174
175 #[test]
176 fn missing_assoc_items() {
177 check_missing_assoc(
178 r#"
179pub trait Foo {
180 const FOO: u8;
181 fn bar();
182}
183impl Foo for u8 {
184 <|>
185}"#,
186 expect![[r#"
187 FOO
188 bar"#]],
189 );
190
191 check_missing_assoc(
192 r#"
193pub trait Foo {
194 const FOO: u8;
195 fn bar();
196}
197impl Foo for u8 {
198 const FOO: u8 = 10;
199 <|>
200}"#,
201 expect![[r#"
202 bar"#]],
203 );
204
205 check_missing_assoc(
206 r#"
207pub trait Foo {
208 const FOO: u8;
209 fn bar();
210}
211impl Foo for u8 {
212 const FOO: u8 = 10;
213 fn bar() {<|>}
214}"#,
215 expect![[r#""#]],
216 );
217
218 check_missing_assoc(
219 r#"
220pub struct Foo;
221impl Foo {
222 fn bar() {<|>}
223}"#,
224 expect![[r#""#]],
225 );
226 }
227}
diff --git a/crates/ide_db/src/traits/tests.rs b/crates/ide_db/src/traits/tests.rs
new file mode 100644
index 000000000..09c7ac3ec
--- /dev/null
+++ b/crates/ide_db/src/traits/tests.rs
@@ -0,0 +1,144 @@
1use crate::RootDatabase;
2use base_db::{fixture::ChangeFixture, FilePosition};
3use expect_test::{expect, Expect};
4use hir::Semantics;
5use syntax::ast::{self, AstNode};
6use test_utils::RangeOrOffset;
7
8/// Creates analysis from a multi-file fixture, returns positions marked with <|>.
9pub(crate) fn position(ra_fixture: &str) -> (RootDatabase, FilePosition) {
10 let change_fixture = ChangeFixture::parse(ra_fixture);
11 let mut database = RootDatabase::default();
12 database.apply_change(change_fixture.change);
13 let (file_id, range_or_offset) = change_fixture.file_position.expect("expected a marker (<|>)");
14 let offset = match range_or_offset {
15 RangeOrOffset::Range(_) => panic!(),
16 RangeOrOffset::Offset(it) => it,
17 };
18 (database, FilePosition { file_id, offset })
19}
20
21fn check_trait(ra_fixture: &str, expect: Expect) {
22 let (db, position) = position(ra_fixture);
23 let sema = Semantics::new(&db);
24 let file = sema.parse(position.file_id);
25 let impl_block: ast::Impl =
26 sema.find_node_at_offset_with_descend(file.syntax(), position.offset).unwrap();
27 let trait_ = crate::traits::resolve_target_trait(&sema, &impl_block);
28 let actual = match trait_ {
29 Some(trait_) => trait_.name(&db).to_string(),
30 None => String::new(),
31 };
32 expect.assert_eq(&actual);
33}
34
35fn check_missing_assoc(ra_fixture: &str, expect: Expect) {
36 let (db, position) = position(ra_fixture);
37 let sema = Semantics::new(&db);
38 let file = sema.parse(position.file_id);
39 let impl_block: ast::Impl =
40 sema.find_node_at_offset_with_descend(file.syntax(), position.offset).unwrap();
41 let items = crate::traits::get_missing_assoc_items(&sema, &impl_block);
42 let actual = items
43 .into_iter()
44 .map(|item| item.name(&db).unwrap().to_string())
45 .collect::<Vec<_>>()
46 .join("\n");
47 expect.assert_eq(&actual);
48}
49
50#[test]
51fn resolve_trait() {
52 check_trait(
53 r#"
54pub trait Foo {
55 fn bar();
56}
57impl Foo for u8 {
58 <|>
59}
60 "#,
61 expect![["Foo"]],
62 );
63 check_trait(
64 r#"
65pub trait Foo {
66 fn bar();
67}
68impl Foo for u8 {
69 fn bar() {
70 fn baz() {
71 <|>
72 }
73 baz();
74 }
75}
76 "#,
77 expect![["Foo"]],
78 );
79 check_trait(
80 r#"
81pub trait Foo {
82 fn bar();
83}
84pub struct Bar;
85impl Bar {
86 <|>
87}
88 "#,
89 expect![[""]],
90 );
91}
92
93#[test]
94fn missing_assoc_items() {
95 check_missing_assoc(
96 r#"
97pub trait Foo {
98 const FOO: u8;
99 fn bar();
100}
101impl Foo for u8 {
102 <|>
103}"#,
104 expect![[r#"
105 FOO
106 bar"#]],
107 );
108
109 check_missing_assoc(
110 r#"
111pub trait Foo {
112 const FOO: u8;
113 fn bar();
114}
115impl Foo for u8 {
116 const FOO: u8 = 10;
117 <|>
118}"#,
119 expect![[r#"
120 bar"#]],
121 );
122
123 check_missing_assoc(
124 r#"
125pub trait Foo {
126 const FOO: u8;
127 fn bar();
128}
129impl Foo for u8 {
130 const FOO: u8 = 10;
131 fn bar() {<|>}
132}"#,
133 expect![[r#""#]],
134 );
135
136 check_missing_assoc(
137 r#"
138pub struct Foo;
139impl Foo {
140 fn bar() {<|>}
141}"#,
142 expect![[r#""#]],
143 );
144}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 16:27:37 +0100