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-rw-r--r--crates/ra_hir_ty/src/tests/coercion.rs861
-rw-r--r--crates/ra_hir_ty/src/tests/display_source_code.rs41
-rw-r--r--crates/ra_hir_ty/src/tests/macros.rs787
-rw-r--r--crates/ra_hir_ty/src/tests/method_resolution.rs1053
-rw-r--r--crates/ra_hir_ty/src/tests/never_type.rs409
-rw-r--r--crates/ra_hir_ty/src/tests/patterns.rs656
-rw-r--r--crates/ra_hir_ty/src/tests/regression.rs842
-rw-r--r--crates/ra_hir_ty/src/tests/simple.rs2190
-rw-r--r--crates/ra_hir_ty/src/tests/traits.rs3113
9 files changed, 0 insertions, 9952 deletions
diff --git a/crates/ra_hir_ty/src/tests/coercion.rs b/crates/ra_hir_ty/src/tests/coercion.rs
deleted file mode 100644
index 17efd75cb..000000000
--- a/crates/ra_hir_ty/src/tests/coercion.rs
+++ /dev/null
@@ -1,861 +0,0 @@
1use expect::expect;
2use test_utils::mark;
3
4use super::{check_infer, check_infer_with_mismatches};
5
6#[test]
7fn infer_block_expr_type_mismatch() {
8 check_infer(
9 r"
10 fn test() {
11 let a: i32 = { 1i64 };
12 }
13 ",
14 expect![[r"
15 10..40 '{ ...4 }; }': ()
16 20..21 'a': i32
17 29..37 '{ 1i64 }': i64
18 31..35 '1i64': i64
19 "]],
20 );
21}
22
23#[test]
24fn coerce_places() {
25 check_infer(
26 r#"
27 struct S<T> { a: T }
28
29 fn f<T>(_: &[T]) -> T { loop {} }
30 fn g<T>(_: S<&[T]>) -> T { loop {} }
31
32 fn gen<T>() -> *mut [T; 2] { loop {} }
33 fn test1<U>() -> *mut [U] {
34 gen()
35 }
36
37 fn test2() {
38 let arr: &[u8; 1] = &[1];
39
40 let a: &[_] = arr;
41 let b = f(arr);
42 let c: &[_] = { arr };
43 let d = g(S { a: arr });
44 let e: [&[_]; 1] = [arr];
45 let f: [&[_]; 2] = [arr; 2];
46 let g: (&[_], &[_]) = (arr, arr);
47 }
48
49 #[lang = "sized"]
50 pub trait Sized {}
51 #[lang = "unsize"]
52 pub trait Unsize<T: ?Sized> {}
53 #[lang = "coerce_unsized"]
54 pub trait CoerceUnsized<T> {}
55
56 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
57 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}
58 "#,
59 expect![[r"
60 30..31 '_': &[T]
61 44..55 '{ loop {} }': T
62 46..53 'loop {}': !
63 51..53 '{}': ()
64 64..65 '_': S<&[T]>
65 81..92 '{ loop {} }': T
66 83..90 'loop {}': !
67 88..90 '{}': ()
68 121..132 '{ loop {} }': *mut [T; _]
69 123..130 'loop {}': !
70 128..130 '{}': ()
71 159..172 '{ gen() }': *mut [U]
72 165..168 'gen': fn gen<U>() -> *mut [U; _]
73 165..170 'gen()': *mut [U; _]
74 185..419 '{ ...rr); }': ()
75 195..198 'arr': &[u8; _]
76 211..215 '&[1]': &[u8; _]
77 212..215 '[1]': [u8; _]
78 213..214 '1': u8
79 226..227 'a': &[u8]
80 236..239 'arr': &[u8; _]
81 249..250 'b': u8
82 253..254 'f': fn f<u8>(&[u8]) -> u8
83 253..259 'f(arr)': u8
84 255..258 'arr': &[u8; _]
85 269..270 'c': &[u8]
86 279..286 '{ arr }': &[u8]
87 281..284 'arr': &[u8; _]
88 296..297 'd': u8
89 300..301 'g': fn g<u8>(S<&[u8]>) -> u8
90 300..315 'g(S { a: arr })': u8
91 302..314 'S { a: arr }': S<&[u8]>
92 309..312 'arr': &[u8; _]
93 325..326 'e': [&[u8]; _]
94 340..345 '[arr]': [&[u8]; _]
95 341..344 'arr': &[u8; _]
96 355..356 'f': [&[u8]; _]
97 370..378 '[arr; 2]': [&[u8]; _]
98 371..374 'arr': &[u8; _]
99 376..377 '2': usize
100 388..389 'g': (&[u8], &[u8])
101 406..416 '(arr, arr)': (&[u8], &[u8])
102 407..410 'arr': &[u8; _]
103 412..415 'arr': &[u8; _]
104 "]],
105 );
106}
107
108#[test]
109fn infer_let_stmt_coerce() {
110 check_infer(
111 r"
112 fn test() {
113 let x: &[isize] = &[1];
114 let x: *const [isize] = &[1];
115 }
116 ",
117 expect![[r"
118 10..75 '{ ...[1]; }': ()
119 20..21 'x': &[isize]
120 34..38 '&[1]': &[isize; _]
121 35..38 '[1]': [isize; _]
122 36..37 '1': isize
123 48..49 'x': *const [isize]
124 68..72 '&[1]': &[isize; _]
125 69..72 '[1]': [isize; _]
126 70..71 '1': isize
127 "]],
128 );
129}
130
131#[test]
132fn infer_custom_coerce_unsized() {
133 check_infer(
134 r#"
135 struct A<T: ?Sized>(*const T);
136 struct B<T: ?Sized>(*const T);
137 struct C<T: ?Sized> { inner: *const T }
138
139 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<B<U>> for B<T> {}
140 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<C<U>> for C<T> {}
141
142 fn foo1<T>(x: A<[T]>) -> A<[T]> { x }
143 fn foo2<T>(x: B<[T]>) -> B<[T]> { x }
144 fn foo3<T>(x: C<[T]>) -> C<[T]> { x }
145
146 fn test(a: A<[u8; 2]>, b: B<[u8; 2]>, c: C<[u8; 2]>) {
147 let d = foo1(a);
148 let e = foo2(b);
149 let f = foo3(c);
150 }
151
152
153 #[lang = "sized"]
154 pub trait Sized {}
155 #[lang = "unsize"]
156 pub trait Unsize<T: ?Sized> {}
157 #[lang = "coerce_unsized"]
158 pub trait CoerceUnsized<T> {}
159
160 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
161 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}
162 "#,
163 expect![[r"
164 257..258 'x': A<[T]>
165 278..283 '{ x }': A<[T]>
166 280..281 'x': A<[T]>
167 295..296 'x': B<[T]>
168 316..321 '{ x }': B<[T]>
169 318..319 'x': B<[T]>
170 333..334 'x': C<[T]>
171 354..359 '{ x }': C<[T]>
172 356..357 'x': C<[T]>
173 369..370 'a': A<[u8; _]>
174 384..385 'b': B<[u8; _]>
175 399..400 'c': C<[u8; _]>
176 414..480 '{ ...(c); }': ()
177 424..425 'd': A<[{unknown}]>
178 428..432 'foo1': fn foo1<{unknown}>(A<[{unknown}]>) -> A<[{unknown}]>
179 428..435 'foo1(a)': A<[{unknown}]>
180 433..434 'a': A<[u8; _]>
181 445..446 'e': B<[u8]>
182 449..453 'foo2': fn foo2<u8>(B<[u8]>) -> B<[u8]>
183 449..456 'foo2(b)': B<[u8]>
184 454..455 'b': B<[u8; _]>
185 466..467 'f': C<[u8]>
186 470..474 'foo3': fn foo3<u8>(C<[u8]>) -> C<[u8]>
187 470..477 'foo3(c)': C<[u8]>
188 475..476 'c': C<[u8; _]>
189 "]],
190 );
191}
192
193#[test]
194fn infer_if_coerce() {
195 check_infer(
196 r#"
197 fn foo<T>(x: &[T]) -> &[T] { loop {} }
198 fn test() {
199 let x = if true {
200 foo(&[1])
201 } else {
202 &[1]
203 };
204 }
205
206
207 #[lang = "sized"]
208 pub trait Sized {}
209 #[lang = "unsize"]
210 pub trait Unsize<T: ?Sized> {}
211 "#,
212 expect![[r"
213 10..11 'x': &[T]
214 27..38 '{ loop {} }': &[T]
215 29..36 'loop {}': !
216 34..36 '{}': ()
217 49..125 '{ ... }; }': ()
218 59..60 'x': &[i32]
219 63..122 'if tru... }': &[i32]
220 66..70 'true': bool
221 71..96 '{ ... }': &[i32]
222 81..84 'foo': fn foo<i32>(&[i32]) -> &[i32]
223 81..90 'foo(&[1])': &[i32]
224 85..89 '&[1]': &[i32; _]
225 86..89 '[1]': [i32; _]
226 87..88 '1': i32
227 102..122 '{ ... }': &[i32; _]
228 112..116 '&[1]': &[i32; _]
229 113..116 '[1]': [i32; _]
230 114..115 '1': i32
231 "]],
232 );
233}
234
235#[test]
236fn infer_if_else_coerce() {
237 check_infer(
238 r#"
239 fn foo<T>(x: &[T]) -> &[T] { loop {} }
240 fn test() {
241 let x = if true {
242 &[1]
243 } else {
244 foo(&[1])
245 };
246 }
247
248 #[lang = "sized"]
249 pub trait Sized {}
250 #[lang = "unsize"]
251 pub trait Unsize<T: ?Sized> {}
252 #[lang = "coerce_unsized"]
253 pub trait CoerceUnsized<T> {}
254
255 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
256 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}
257 "#,
258 expect![[r"
259 10..11 'x': &[T]
260 27..38 '{ loop {} }': &[T]
261 29..36 'loop {}': !
262 34..36 '{}': ()
263 49..125 '{ ... }; }': ()
264 59..60 'x': &[i32]
265 63..122 'if tru... }': &[i32]
266 66..70 'true': bool
267 71..91 '{ ... }': &[i32; _]
268 81..85 '&[1]': &[i32; _]
269 82..85 '[1]': [i32; _]
270 83..84 '1': i32
271 97..122 '{ ... }': &[i32]
272 107..110 'foo': fn foo<i32>(&[i32]) -> &[i32]
273 107..116 'foo(&[1])': &[i32]
274 111..115 '&[1]': &[i32; _]
275 112..115 '[1]': [i32; _]
276 113..114 '1': i32
277 "]],
278 )
279}
280
281#[test]
282fn infer_match_first_coerce() {
283 check_infer(
284 r#"
285 fn foo<T>(x: &[T]) -> &[T] { loop {} }
286 fn test(i: i32) {
287 let x = match i {
288 2 => foo(&[2]),
289 1 => &[1],
290 _ => &[3],
291 };
292 }
293
294 #[lang = "sized"]
295 pub trait Sized {}
296 #[lang = "unsize"]
297 pub trait Unsize<T: ?Sized> {}
298 "#,
299 expect![[r"
300 10..11 'x': &[T]
301 27..38 '{ loop {} }': &[T]
302 29..36 'loop {}': !
303 34..36 '{}': ()
304 47..48 'i': i32
305 55..149 '{ ... }; }': ()
306 65..66 'x': &[i32]
307 69..146 'match ... }': &[i32]
308 75..76 'i': i32
309 87..88 '2': i32
310 87..88 '2': i32
311 92..95 'foo': fn foo<i32>(&[i32]) -> &[i32]
312 92..101 'foo(&[2])': &[i32]
313 96..100 '&[2]': &[i32; _]
314 97..100 '[2]': [i32; _]
315 98..99 '2': i32
316 111..112 '1': i32
317 111..112 '1': i32
318 116..120 '&[1]': &[i32; _]
319 117..120 '[1]': [i32; _]
320 118..119 '1': i32
321 130..131 '_': i32
322 135..139 '&[3]': &[i32; _]
323 136..139 '[3]': [i32; _]
324 137..138 '3': i32
325 "]],
326 );
327}
328
329#[test]
330fn infer_match_second_coerce() {
331 check_infer(
332 r#"
333 fn foo<T>(x: &[T]) -> &[T] { loop {} }
334 fn test(i: i32) {
335 let x = match i {
336 1 => &[1],
337 2 => foo(&[2]),
338 _ => &[3],
339 };
340 }
341
342 #[lang = "sized"]
343 pub trait Sized {}
344 #[lang = "unsize"]
345 pub trait Unsize<T: ?Sized> {}
346 #[lang = "coerce_unsized"]
347 pub trait CoerceUnsized<T> {}
348
349 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
350 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}
351 "#,
352 expect![[r"
353 10..11 'x': &[T]
354 27..38 '{ loop {} }': &[T]
355 29..36 'loop {}': !
356 34..36 '{}': ()
357 47..48 'i': i32
358 55..149 '{ ... }; }': ()
359 65..66 'x': &[i32]
360 69..146 'match ... }': &[i32]
361 75..76 'i': i32
362 87..88 '1': i32
363 87..88 '1': i32
364 92..96 '&[1]': &[i32; _]
365 93..96 '[1]': [i32; _]
366 94..95 '1': i32
367 106..107 '2': i32
368 106..107 '2': i32
369 111..114 'foo': fn foo<i32>(&[i32]) -> &[i32]
370 111..120 'foo(&[2])': &[i32]
371 115..119 '&[2]': &[i32; _]
372 116..119 '[2]': [i32; _]
373 117..118 '2': i32
374 130..131 '_': i32
375 135..139 '&[3]': &[i32; _]
376 136..139 '[3]': [i32; _]
377 137..138 '3': i32
378 "]],
379 );
380}
381
382#[test]
383fn coerce_merge_one_by_one1() {
384 mark::check!(coerce_merge_fail_fallback);
385
386 check_infer(
387 r"
388 fn test() {
389 let t = &mut 1;
390 let x = match 1 {
391 1 => t as *mut i32,
392 2 => t as &i32,
393 _ => t as *const i32,
394 };
395 }
396 ",
397 expect![[r"
398 10..144 '{ ... }; }': ()
399 20..21 't': &mut i32
400 24..30 '&mut 1': &mut i32
401 29..30 '1': i32
402 40..41 'x': *const i32
403 44..141 'match ... }': *const i32
404 50..51 '1': i32
405 62..63 '1': i32
406 62..63 '1': i32
407 67..68 't': &mut i32
408 67..80 't as *mut i32': *mut i32
409 90..91 '2': i32
410 90..91 '2': i32
411 95..96 't': &mut i32
412 95..104 't as &i32': &i32
413 114..115 '_': i32
414 119..120 't': &mut i32
415 119..134 't as *const i32': *const i32
416 "]],
417 );
418}
419
420#[test]
421fn return_coerce_unknown() {
422 check_infer_with_mismatches(
423 r"
424 fn foo() -> u32 {
425 return unknown;
426 }
427 ",
428 expect![[r"
429 16..39 '{ ...own; }': u32
430 22..36 'return unknown': !
431 29..36 'unknown': u32
432 "]],
433 );
434}
435
436#[test]
437fn coerce_autoderef() {
438 check_infer_with_mismatches(
439 r"
440 struct Foo;
441 fn takes_ref_foo(x: &Foo) {}
442 fn test() {
443 takes_ref_foo(&Foo);
444 takes_ref_foo(&&Foo);
445 takes_ref_foo(&&&Foo);
446 }
447 ",
448 expect![[r"
449 29..30 'x': &Foo
450 38..40 '{}': ()
451 51..132 '{ ...oo); }': ()
452 57..70 'takes_ref_foo': fn takes_ref_foo(&Foo)
453 57..76 'takes_...(&Foo)': ()
454 71..75 '&Foo': &Foo
455 72..75 'Foo': Foo
456 82..95 'takes_ref_foo': fn takes_ref_foo(&Foo)
457 82..102 'takes_...&&Foo)': ()
458 96..101 '&&Foo': &&Foo
459 97..101 '&Foo': &Foo
460 98..101 'Foo': Foo
461 108..121 'takes_ref_foo': fn takes_ref_foo(&Foo)
462 108..129 'takes_...&&Foo)': ()
463 122..128 '&&&Foo': &&&Foo
464 123..128 '&&Foo': &&Foo
465 124..128 '&Foo': &Foo
466 125..128 'Foo': Foo
467 "]],
468 );
469}
470
471#[test]
472fn coerce_autoderef_generic() {
473 check_infer_with_mismatches(
474 r"
475 struct Foo;
476 fn takes_ref<T>(x: &T) -> T { *x }
477 fn test() {
478 takes_ref(&Foo);
479 takes_ref(&&Foo);
480 takes_ref(&&&Foo);
481 }
482 ",
483 expect![[r"
484 28..29 'x': &T
485 40..46 '{ *x }': T
486 42..44 '*x': T
487 43..44 'x': &T
488 57..126 '{ ...oo); }': ()
489 63..72 'takes_ref': fn takes_ref<Foo>(&Foo) -> Foo
490 63..78 'takes_ref(&Foo)': Foo
491 73..77 '&Foo': &Foo
492 74..77 'Foo': Foo
493 84..93 'takes_ref': fn takes_ref<&Foo>(&&Foo) -> &Foo
494 84..100 'takes_...&&Foo)': &Foo
495 94..99 '&&Foo': &&Foo
496 95..99 '&Foo': &Foo
497 96..99 'Foo': Foo
498 106..115 'takes_ref': fn takes_ref<&&Foo>(&&&Foo) -> &&Foo
499 106..123 'takes_...&&Foo)': &&Foo
500 116..122 '&&&Foo': &&&Foo
501 117..122 '&&Foo': &&Foo
502 118..122 '&Foo': &Foo
503 119..122 'Foo': Foo
504 "]],
505 );
506}
507
508#[test]
509fn coerce_autoderef_block() {
510 check_infer_with_mismatches(
511 r#"
512 struct String {}
513 #[lang = "deref"]
514 trait Deref { type Target; }
515 impl Deref for String { type Target = str; }
516 fn takes_ref_str(x: &str) {}
517 fn returns_string() -> String { loop {} }
518 fn test() {
519 takes_ref_str(&{ returns_string() });
520 }
521 "#,
522 expect![[r"
523 126..127 'x': &str
524 135..137 '{}': ()
525 168..179 '{ loop {} }': String
526 170..177 'loop {}': !
527 175..177 '{}': ()
528 190..235 '{ ... }); }': ()
529 196..209 'takes_ref_str': fn takes_ref_str(&str)
530 196..232 'takes_...g() })': ()
531 210..231 '&{ ret...ng() }': &String
532 211..231 '{ retu...ng() }': String
533 213..227 'returns_string': fn returns_string() -> String
534 213..229 'return...ring()': String
535 "]],
536 );
537}
538
539#[test]
540fn closure_return_coerce() {
541 check_infer_with_mismatches(
542 r"
543 fn foo() {
544 let x = || {
545 if true {
546 return &1u32;
547 }
548 &&1u32
549 };
550 }
551 ",
552 expect![[r"
553 9..105 '{ ... }; }': ()
554 19..20 'x': || -> &u32
555 23..102 '|| { ... }': || -> &u32
556 26..102 '{ ... }': &u32
557 36..81 'if tru... }': ()
558 39..43 'true': bool
559 44..81 '{ ... }': ()
560 58..70 'return &1u32': !
561 65..70 '&1u32': &u32
562 66..70 '1u32': u32
563 90..96 '&&1u32': &&u32
564 91..96 '&1u32': &u32
565 92..96 '1u32': u32
566 "]],
567 );
568}
569
570#[test]
571fn coerce_fn_item_to_fn_ptr() {
572 check_infer_with_mismatches(
573 r"
574 fn foo(x: u32) -> isize { 1 }
575 fn test() {
576 let f: fn(u32) -> isize = foo;
577 }
578 ",
579 expect![[r"
580 7..8 'x': u32
581 24..29 '{ 1 }': isize
582 26..27 '1': isize
583 40..78 '{ ...foo; }': ()
584 50..51 'f': fn(u32) -> isize
585 72..75 'foo': fn foo(u32) -> isize
586 "]],
587 );
588}
589
590#[test]
591fn coerce_fn_items_in_match_arms() {
592 mark::check!(coerce_fn_reification);
593
594 check_infer_with_mismatches(
595 r"
596 fn foo1(x: u32) -> isize { 1 }
597 fn foo2(x: u32) -> isize { 2 }
598 fn foo3(x: u32) -> isize { 3 }
599 fn test() {
600 let x = match 1 {
601 1 => foo1,
602 2 => foo2,
603 _ => foo3,
604 };
605 }
606 ",
607 expect![[r"
608 8..9 'x': u32
609 25..30 '{ 1 }': isize
610 27..28 '1': isize
611 39..40 'x': u32
612 56..61 '{ 2 }': isize
613 58..59 '2': isize
614 70..71 'x': u32
615 87..92 '{ 3 }': isize
616 89..90 '3': isize
617 103..192 '{ ... }; }': ()
618 113..114 'x': fn(u32) -> isize
619 117..189 'match ... }': fn(u32) -> isize
620 123..124 '1': i32
621 135..136 '1': i32
622 135..136 '1': i32
623 140..144 'foo1': fn foo1(u32) -> isize
624 154..155 '2': i32
625 154..155 '2': i32
626 159..163 'foo2': fn foo2(u32) -> isize
627 173..174 '_': i32
628 178..182 'foo3': fn foo3(u32) -> isize
629 "]],
630 );
631}
632
633#[test]
634fn coerce_closure_to_fn_ptr() {
635 check_infer_with_mismatches(
636 r"
637 fn test() {
638 let f: fn(u32) -> isize = |x| { 1 };
639 }
640 ",
641 expect![[r"
642 10..54 '{ ...1 }; }': ()
643 20..21 'f': fn(u32) -> isize
644 42..51 '|x| { 1 }': |u32| -> isize
645 43..44 'x': u32
646 46..51 '{ 1 }': isize
647 48..49 '1': isize
648 "]],
649 );
650}
651
652#[test]
653fn coerce_placeholder_ref() {
654 // placeholders should unify, even behind references
655 check_infer_with_mismatches(
656 r"
657 struct S<T> { t: T }
658 impl<TT> S<TT> {
659 fn get(&self) -> &TT {
660 &self.t
661 }
662 }
663 ",
664 expect![[r"
665 50..54 'self': &S<TT>
666 63..86 '{ ... }': &TT
667 73..80 '&self.t': &TT
668 74..78 'self': &S<TT>
669 74..80 'self.t': TT
670 "]],
671 );
672}
673
674#[test]
675fn coerce_unsize_array() {
676 check_infer_with_mismatches(
677 r#"
678 #[lang = "unsize"]
679 pub trait Unsize<T> {}
680 #[lang = "coerce_unsized"]
681 pub trait CoerceUnsized<T> {}
682
683 impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
684
685 fn test() {
686 let f: &[usize] = &[1, 2, 3];
687 }
688 "#,
689 expect![[r"
690 161..198 '{ ... 3]; }': ()
691 171..172 'f': &[usize]
692 185..195 '&[1, 2, 3]': &[usize; _]
693 186..195 '[1, 2, 3]': [usize; _]
694 187..188 '1': usize
695 190..191 '2': usize
696 193..194 '3': usize
697 "]],
698 );
699}
700
701#[test]
702fn coerce_unsize_trait_object_simple() {
703 check_infer_with_mismatches(
704 r#"
705 #[lang = "sized"]
706 pub trait Sized {}
707 #[lang = "unsize"]
708 pub trait Unsize<T> {}
709 #[lang = "coerce_unsized"]
710 pub trait CoerceUnsized<T> {}
711
712 impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
713
714 trait Foo<T, U> {}
715 trait Bar<U, T, X>: Foo<T, U> {}
716 trait Baz<T, X>: Bar<usize, T, X> {}
717
718 struct S<T, X>;
719 impl<T, X> Foo<T, usize> for S<T, X> {}
720 impl<T, X> Bar<usize, T, X> for S<T, X> {}
721 impl<T, X> Baz<T, X> for S<T, X> {}
722
723 fn test() {
724 let obj: &dyn Baz<i8, i16> = &S;
725 let obj: &dyn Bar<_, i8, i16> = &S;
726 let obj: &dyn Foo<i8, _> = &S;
727 }
728 "#,
729 expect![[r"
730 424..539 '{ ... &S; }': ()
731 434..437 'obj': &dyn Baz<i8, i16>
732 459..461 '&S': &S<i8, i16>
733 460..461 'S': S<i8, i16>
734 471..474 'obj': &dyn Bar<usize, i8, i16>
735 499..501 '&S': &S<i8, i16>
736 500..501 'S': S<i8, i16>
737 511..514 'obj': &dyn Foo<i8, usize>
738 534..536 '&S': &S<i8, {unknown}>
739 535..536 'S': S<i8, {unknown}>
740 "]],
741 );
742}
743
744#[test]
745// The rust reference says this should be possible, but rustc doesn't implement
746// it. We used to support it, but Chalk doesn't.
747#[ignore]
748fn coerce_unsize_trait_object_to_trait_object() {
749 check_infer_with_mismatches(
750 r#"
751 #[lang = "sized"]
752 pub trait Sized {}
753 #[lang = "unsize"]
754 pub trait Unsize<T> {}
755 #[lang = "coerce_unsized"]
756 pub trait CoerceUnsized<T> {}
757
758 impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
759
760 trait Foo<T, U> {}
761 trait Bar<U, T, X>: Foo<T, U> {}
762 trait Baz<T, X>: Bar<usize, T, X> {}
763
764 struct S<T, X>;
765 impl<T, X> Foo<T, usize> for S<T, X> {}
766 impl<T, X> Bar<usize, T, X> for S<T, X> {}
767 impl<T, X> Baz<T, X> for S<T, X> {}
768
769 fn test() {
770 let obj: &dyn Baz<i8, i16> = &S;
771 let obj: &dyn Bar<_, _, _> = obj;
772 let obj: &dyn Foo<_, _> = obj;
773 let obj2: &dyn Baz<i8, i16> = &S;
774 let _: &dyn Foo<_, _> = obj2;
775 }
776 "#,
777 expect![[r"
778 424..609 '{ ...bj2; }': ()
779 434..437 'obj': &dyn Baz<i8, i16>
780 459..461 '&S': &S<i8, i16>
781 460..461 'S': S<i8, i16>
782 471..474 'obj': &dyn Bar<usize, i8, i16>
783 496..499 'obj': &dyn Baz<i8, i16>
784 509..512 'obj': &dyn Foo<i8, usize>
785 531..534 'obj': &dyn Bar<usize, i8, i16>
786 544..548 'obj2': &dyn Baz<i8, i16>
787 570..572 '&S': &S<i8, i16>
788 571..572 'S': S<i8, i16>
789 582..583 '_': &dyn Foo<i8, usize>
790 602..606 'obj2': &dyn Baz<i8, i16>
791 "]],
792 );
793}
794
795#[test]
796fn coerce_unsize_super_trait_cycle() {
797 check_infer_with_mismatches(
798 r#"
799 #[lang = "sized"]
800 pub trait Sized {}
801 #[lang = "unsize"]
802 pub trait Unsize<T> {}
803 #[lang = "coerce_unsized"]
804 pub trait CoerceUnsized<T> {}
805
806 impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
807
808 trait A {}
809 trait B: C + A {}
810 trait C: B {}
811 trait D: C
812
813 struct S;
814 impl A for S {}
815 impl B for S {}
816 impl C for S {}
817 impl D for S {}
818
819 fn test() {
820 let obj: &dyn D = &S;
821 let obj: &dyn A = &S;
822 }
823 "#,
824 expect![[r"
825 328..383 '{ ... &S; }': ()
826 338..341 'obj': &dyn D
827 352..354 '&S': &S
828 353..354 'S': S
829 364..367 'obj': &dyn A
830 378..380 '&S': &S
831 379..380 'S': S
832 "]],
833 );
834}
835
836#[ignore]
837#[test]
838fn coerce_unsize_generic() {
839 // FIXME: Implement this
840 // https://doc.rust-lang.org/reference/type-coercions.html#unsized-coercions
841 check_infer_with_mismatches(
842 r#"
843 #[lang = "unsize"]
844 pub trait Unsize<T> {}
845 #[lang = "coerce_unsized"]
846 pub trait CoerceUnsized<T> {}
847
848 impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
849
850 struct Foo<T> { t: T };
851 struct Bar<T>(Foo<T>);
852
853 fn test() {
854 let _: &Foo<[usize]> = &Foo { t: [1, 2, 3] };
855 let _: &Bar<[usize]> = &Bar(Foo { t: [1, 2, 3] });
856 }
857 "#,
858 expect![[r"
859 "]],
860 );
861}
diff --git a/crates/ra_hir_ty/src/tests/display_source_code.rs b/crates/ra_hir_ty/src/tests/display_source_code.rs
deleted file mode 100644
index b502135d8..000000000
--- a/crates/ra_hir_ty/src/tests/display_source_code.rs
+++ /dev/null
@@ -1,41 +0,0 @@
1use super::check_types_source_code;
2
3#[test]
4fn qualify_path_to_submodule() {
5 check_types_source_code(
6 r#"
7mod foo {
8 pub struct Foo;
9}
10
11fn bar() {
12 let foo: foo::Foo = foo::Foo;
13 foo
14} //^ foo::Foo
15
16"#,
17 );
18}
19
20#[test]
21fn omit_default_type_parameters() {
22 check_types_source_code(
23 r#"
24struct Foo<T = u8> { t: T }
25fn main() {
26 let foo = Foo { t: 5u8 };
27 foo;
28} //^ Foo
29"#,
30 );
31
32 check_types_source_code(
33 r#"
34struct Foo<K, T = u8> { k: K, t: T }
35fn main() {
36 let foo = Foo { k: 400, t: 5u8 };
37 foo;
38} //^ Foo<i32>
39"#,
40 );
41}
diff --git a/crates/ra_hir_ty/src/tests/macros.rs b/crates/ra_hir_ty/src/tests/macros.rs
deleted file mode 100644
index 24c53eb02..000000000
--- a/crates/ra_hir_ty/src/tests/macros.rs
+++ /dev/null
@@ -1,787 +0,0 @@
1use std::fs;
2
3use expect::expect;
4use test_utils::project_dir;
5
6use super::{check_infer, check_types};
7
8#[test]
9fn cfg_impl_def() {
10 check_types(
11 r#"
12//- /main.rs crate:main deps:foo cfg:test
13use foo::S as T;
14struct S;
15
16#[cfg(test)]
17impl S {
18 fn foo1(&self) -> i32 { 0 }
19}
20
21#[cfg(not(test))]
22impl S {
23 fn foo2(&self) -> i32 { 0 }
24}
25
26fn test() {
27 let t = (S.foo1(), S.foo2(), T.foo3(), T.foo4());
28 t;
29} //^ (i32, {unknown}, i32, {unknown})
30
31//- /foo.rs crate:foo
32struct S;
33
34#[cfg(not(test))]
35impl S {
36 fn foo3(&self) -> i32 { 0 }
37}
38
39#[cfg(test)]
40impl S {
41 fn foo4(&self) -> i32 { 0 }
42}
43"#,
44 );
45}
46
47#[test]
48fn infer_macros_expanded() {
49 check_infer(
50 r#"
51 struct Foo(Vec<i32>);
52
53 macro_rules! foo {
54 ($($item:expr),*) => {
55 {
56 Foo(vec![$($item,)*])
57 }
58 };
59 }
60
61 fn main() {
62 let x = foo!(1,2);
63 }
64 "#,
65 expect![[r#"
66 !0..17 '{Foo(v...,2,])}': Foo
67 !1..4 'Foo': Foo({unknown}) -> Foo
68 !1..16 'Foo(vec![1,2,])': Foo
69 !5..15 'vec![1,2,]': {unknown}
70 155..181 '{ ...,2); }': ()
71 165..166 'x': Foo
72 "#]],
73 );
74}
75
76#[test]
77fn infer_legacy_textual_scoped_macros_expanded() {
78 check_infer(
79 r#"
80 struct Foo(Vec<i32>);
81
82 #[macro_use]
83 mod m {
84 macro_rules! foo {
85 ($($item:expr),*) => {
86 {
87 Foo(vec![$($item,)*])
88 }
89 };
90 }
91 }
92
93 fn main() {
94 let x = foo!(1,2);
95 let y = crate::foo!(1,2);
96 }
97 "#,
98 expect![[r#"
99 !0..17 '{Foo(v...,2,])}': Foo
100 !1..4 'Foo': Foo({unknown}) -> Foo
101 !1..16 'Foo(vec![1,2,])': Foo
102 !5..15 'vec![1,2,]': {unknown}
103 194..250 '{ ...,2); }': ()
104 204..205 'x': Foo
105 227..228 'y': {unknown}
106 231..247 'crate:...!(1,2)': {unknown}
107 "#]],
108 );
109}
110
111#[test]
112fn infer_path_qualified_macros_expanded() {
113 check_infer(
114 r#"
115 #[macro_export]
116 macro_rules! foo {
117 () => { 42i32 }
118 }
119
120 mod m {
121 pub use super::foo as bar;
122 }
123
124 fn main() {
125 let x = crate::foo!();
126 let y = m::bar!();
127 }
128 "#,
129 expect![[r#"
130 !0..5 '42i32': i32
131 !0..5 '42i32': i32
132 110..163 '{ ...!(); }': ()
133 120..121 'x': i32
134 147..148 'y': i32
135 "#]],
136 );
137}
138
139#[test]
140fn expr_macro_expanded_in_various_places() {
141 check_infer(
142 r#"
143 macro_rules! spam {
144 () => (1isize);
145 }
146
147 fn spam() {
148 spam!();
149 (spam!());
150 spam!().spam(spam!());
151 for _ in spam!() {}
152 || spam!();
153 while spam!() {}
154 break spam!();
155 return spam!();
156 match spam!() {
157 _ if spam!() => spam!(),
158 }
159 spam!()(spam!());
160 Spam { spam: spam!() };
161 spam!()[spam!()];
162 await spam!();
163 spam!() as usize;
164 &spam!();
165 -spam!();
166 spam!()..spam!();
167 spam!() + spam!();
168 }
169 "#,
170 expect![[r#"
171 !0..6 '1isize': isize
172 !0..6 '1isize': isize
173 !0..6 '1isize': isize
174 !0..6 '1isize': isize
175 !0..6 '1isize': isize
176 !0..6 '1isize': isize
177 !0..6 '1isize': isize
178 !0..6 '1isize': isize
179 !0..6 '1isize': isize
180 !0..6 '1isize': isize
181 !0..6 '1isize': isize
182 !0..6 '1isize': isize
183 !0..6 '1isize': isize
184 !0..6 '1isize': isize
185 !0..6 '1isize': isize
186 !0..6 '1isize': isize
187 !0..6 '1isize': isize
188 !0..6 '1isize': isize
189 !0..6 '1isize': isize
190 !0..6 '1isize': isize
191 !0..6 '1isize': isize
192 !0..6 '1isize': isize
193 !0..6 '1isize': isize
194 !0..6 '1isize': isize
195 !0..6 '1isize': isize
196 53..456 '{ ...!(); }': ()
197 87..108 'spam!(...am!())': {unknown}
198 114..133 'for _ ...!() {}': ()
199 118..119 '_': {unknown}
200 131..133 '{}': ()
201 138..148 '|| spam!()': || -> isize
202 154..170 'while ...!() {}': ()
203 168..170 '{}': ()
204 175..188 'break spam!()': !
205 194..208 'return spam!()': !
206 214..268 'match ... }': isize
207 238..239 '_': isize
208 273..289 'spam!(...am!())': {unknown}
209 295..317 'Spam {...m!() }': {unknown}
210 323..339 'spam!(...am!()]': {unknown}
211 364..380 'spam!(... usize': usize
212 386..394 '&spam!()': &isize
213 400..408 '-spam!()': isize
214 414..430 'spam!(...pam!()': {unknown}
215 436..453 'spam!(...pam!()': isize
216 "#]],
217 );
218}
219
220#[test]
221fn infer_type_value_macro_having_same_name() {
222 check_infer(
223 r#"
224 #[macro_export]
225 macro_rules! foo {
226 () => {
227 mod foo {
228 pub use super::foo;
229 }
230 };
231 ($x:tt) => {
232 $x
233 };
234 }
235
236 foo!();
237
238 fn foo() {
239 let foo = foo::foo!(42i32);
240 }
241 "#,
242 expect![[r#"
243 !0..5 '42i32': i32
244 170..205 '{ ...32); }': ()
245 180..183 'foo': i32
246 "#]],
247 );
248}
249
250#[test]
251fn processes_impls_generated_by_macros() {
252 check_types(
253 r#"
254macro_rules! m {
255 ($ident:ident) => (impl Trait for $ident {})
256}
257trait Trait { fn foo(self) -> u128 {} }
258struct S;
259m!(S);
260fn test() { S.foo(); }
261 //^ u128
262"#,
263 );
264}
265
266#[test]
267fn infer_assoc_items_generated_by_macros() {
268 check_types(
269 r#"
270macro_rules! m {
271 () => (fn foo(&self) -> u128 {0})
272}
273struct S;
274impl S {
275 m!();
276}
277
278fn test() { S.foo(); }
279 //^ u128
280"#,
281 );
282}
283
284#[test]
285fn infer_assoc_items_generated_by_macros_chain() {
286 check_types(
287 r#"
288macro_rules! m_inner {
289 () => {fn foo(&self) -> u128 {0}}
290}
291macro_rules! m {
292 () => {m_inner!();}
293}
294
295struct S;
296impl S {
297 m!();
298}
299
300fn test() { S.foo(); }
301 //^ u128
302"#,
303 );
304}
305
306#[test]
307fn infer_macro_with_dollar_crate_is_correct_in_expr() {
308 check_types(
309 r#"
310//- /main.rs crate:main deps:foo
311fn test() {
312 let x = (foo::foo!(1), foo::foo!(2));
313 x;
314} //^ (i32, usize)
315
316//- /lib.rs crate:foo
317#[macro_export]
318macro_rules! foo {
319 (1) => { $crate::bar!() };
320 (2) => { 1 + $crate::baz() };
321}
322
323#[macro_export]
324macro_rules! bar {
325 () => { 42 }
326}
327
328pub fn baz() -> usize { 31usize }
329"#,
330 );
331}
332
333#[test]
334fn infer_macro_with_dollar_crate_is_correct_in_trait_associate_type() {
335 check_types(
336 r#"
337//- /main.rs crate:main deps:foo
338use foo::Trait;
339
340fn test() {
341 let msg = foo::Message(foo::MessageRef);
342 let r = msg.deref();
343 r;
344 //^ &MessageRef
345}
346
347//- /lib.rs crate:foo
348pub struct MessageRef;
349pub struct Message(MessageRef);
350
351pub trait Trait {
352 type Target;
353 fn deref(&self) -> &Self::Target;
354}
355
356#[macro_export]
357macro_rules! expand {
358 () => {
359 impl Trait for Message {
360 type Target = $crate::MessageRef;
361 fn deref(&self) -> &Self::Target {
362 &self.0
363 }
364 }
365 }
366}
367
368expand!();
369"#,
370 );
371}
372
373#[test]
374fn infer_type_value_non_legacy_macro_use_as() {
375 check_infer(
376 r#"
377 mod m {
378 macro_rules! _foo {
379 ($x:ident) => { type $x = u64; }
380 }
381 pub(crate) use _foo as foo;
382 }
383
384 m::foo!(foo);
385 use foo as bar;
386 fn f() -> bar { 0 }
387 fn main() {
388 let _a = f();
389 }
390 "#,
391 expect![[r#"
392 158..163 '{ 0 }': u64
393 160..161 '0': u64
394 174..196 '{ ...f(); }': ()
395 184..186 '_a': u64
396 190..191 'f': fn f() -> u64
397 190..193 'f()': u64
398 "#]],
399 );
400}
401
402#[test]
403fn infer_local_macro() {
404 check_infer(
405 r#"
406 fn main() {
407 macro_rules! foo {
408 () => { 1usize }
409 }
410 let _a = foo!();
411 }
412 "#,
413 expect![[r#"
414 !0..6 '1usize': usize
415 10..89 '{ ...!(); }': ()
416 16..65 'macro_... }': {unknown}
417 74..76 '_a': usize
418 "#]],
419 );
420}
421
422#[test]
423fn infer_local_inner_macros() {
424 check_types(
425 r#"
426//- /main.rs crate:main deps:foo
427fn test() {
428 let x = foo::foo!(1);
429 x;
430} //^ i32
431
432//- /lib.rs crate:foo
433#[macro_export(local_inner_macros)]
434macro_rules! foo {
435 (1) => { bar!() };
436}
437
438#[macro_export]
439macro_rules! bar {
440 () => { 42 }
441}
442
443"#,
444 );
445}
446
447#[test]
448fn infer_builtin_macros_line() {
449 check_infer(
450 r#"
451 #[rustc_builtin_macro]
452 macro_rules! line {() => {}}
453
454 fn main() {
455 let x = line!();
456 }
457 "#,
458 expect![[r#"
459 !0..1 '0': i32
460 63..87 '{ ...!(); }': ()
461 73..74 'x': i32
462 "#]],
463 );
464}
465
466#[test]
467fn infer_builtin_macros_file() {
468 check_infer(
469 r#"
470 #[rustc_builtin_macro]
471 macro_rules! file {() => {}}
472
473 fn main() {
474 let x = file!();
475 }
476 "#,
477 expect![[r#"
478 !0..2 '""': &str
479 63..87 '{ ...!(); }': ()
480 73..74 'x': &str
481 "#]],
482 );
483}
484
485#[test]
486fn infer_builtin_macros_column() {
487 check_infer(
488 r#"
489 #[rustc_builtin_macro]
490 macro_rules! column {() => {}}
491
492 fn main() {
493 let x = column!();
494 }
495 "#,
496 expect![[r#"
497 !0..1 '0': i32
498 65..91 '{ ...!(); }': ()
499 75..76 'x': i32
500 "#]],
501 );
502}
503
504#[test]
505fn infer_builtin_macros_concat() {
506 check_infer(
507 r#"
508 #[rustc_builtin_macro]
509 macro_rules! concat {() => {}}
510
511 fn main() {
512 let x = concat!("hello", concat!("world", "!"));
513 }
514 "#,
515 expect![[r#"
516 !0..13 '"helloworld!"': &str
517 65..121 '{ ...")); }': ()
518 75..76 'x': &str
519 "#]],
520 );
521}
522
523#[test]
524fn infer_builtin_macros_include() {
525 check_types(
526 r#"
527//- /main.rs
528#[rustc_builtin_macro]
529macro_rules! include {() => {}}
530
531include!("foo.rs");
532
533fn main() {
534 bar();
535} //^ u32
536
537//- /foo.rs
538fn bar() -> u32 {0}
539"#,
540 );
541}
542
543#[test]
544#[ignore]
545fn include_accidentally_quadratic() {
546 let file = project_dir().join("crates/ra_syntax/test_data/accidentally_quadratic");
547 let big_file = fs::read_to_string(file).unwrap();
548 let big_file = vec![big_file; 10].join("\n");
549
550 let fixture = r#"
551//- /main.rs
552#[rustc_builtin_macro]
553macro_rules! include {() => {}}
554
555include!("foo.rs");
556
557fn main() {
558 RegisterBlock { };
559 //^ RegisterBlock
560}
561 "#;
562 let fixture = format!("{}\n//- /foo.rs\n{}", fixture, big_file);
563 check_types(&fixture);
564}
565
566#[test]
567fn infer_builtin_macros_include_concat() {
568 check_types(
569 r#"
570//- /main.rs
571#[rustc_builtin_macro]
572macro_rules! include {() => {}}
573
574#[rustc_builtin_macro]
575macro_rules! concat {() => {}}
576
577include!(concat!("f", "oo.rs"));
578
579fn main() {
580 bar();
581} //^ u32
582
583//- /foo.rs
584fn bar() -> u32 {0}
585"#,
586 );
587}
588
589#[test]
590fn infer_builtin_macros_include_concat_with_bad_env_should_failed() {
591 check_types(
592 r#"
593//- /main.rs
594#[rustc_builtin_macro]
595macro_rules! include {() => {}}
596
597#[rustc_builtin_macro]
598macro_rules! concat {() => {}}
599
600#[rustc_builtin_macro]
601macro_rules! env {() => {}}
602
603include!(concat!(env!("OUT_DIR"), "/foo.rs"));
604
605fn main() {
606 bar();
607} //^ {unknown}
608
609//- /foo.rs
610fn bar() -> u32 {0}
611"#,
612 );
613}
614
615#[test]
616fn infer_builtin_macros_include_itself_should_failed() {
617 check_types(
618 r#"
619#[rustc_builtin_macro]
620macro_rules! include {() => {}}
621
622include!("main.rs");
623
624fn main() {
625 0
626} //^ i32
627"#,
628 );
629}
630
631#[test]
632fn infer_builtin_macros_concat_with_lazy() {
633 check_infer(
634 r#"
635 macro_rules! hello {() => {"hello"}}
636
637 #[rustc_builtin_macro]
638 macro_rules! concat {() => {}}
639
640 fn main() {
641 let x = concat!(hello!(), concat!("world", "!"));
642 }
643 "#,
644 expect![[r#"
645 !0..13 '"helloworld!"': &str
646 103..160 '{ ...")); }': ()
647 113..114 'x': &str
648 "#]],
649 );
650}
651
652#[test]
653fn infer_builtin_macros_env() {
654 check_infer(
655 r#"
656 //- /main.rs env:foo=bar
657 #[rustc_builtin_macro]
658 macro_rules! env {() => {}}
659
660 fn main() {
661 let x = env!("foo");
662 }
663 "#,
664 expect![[r#"
665 !0..22 '"__RA_...TED__"': &str
666 62..90 '{ ...o"); }': ()
667 72..73 'x': &str
668 "#]],
669 );
670}
671
672#[test]
673fn infer_derive_clone_simple() {
674 check_types(
675 r#"
676//- /main.rs crate:main deps:core
677#[derive(Clone)]
678struct S;
679fn test() {
680 S.clone();
681} //^ S
682
683//- /lib.rs crate:core
684#[prelude_import]
685use clone::*;
686mod clone {
687 trait Clone {
688 fn clone(&self) -> Self;
689 }
690}
691"#,
692 );
693}
694
695#[test]
696fn infer_derive_clone_in_core() {
697 check_types(
698 r#"
699//- /lib.rs crate:core
700#[prelude_import]
701use clone::*;
702mod clone {
703 trait Clone {
704 fn clone(&self) -> Self;
705 }
706}
707#[derive(Clone)]
708pub struct S;
709
710//- /main.rs crate:main deps:core
711use core::S;
712fn test() {
713 S.clone();
714} //^ S
715"#,
716 );
717}
718
719#[test]
720fn infer_derive_clone_with_params() {
721 check_types(
722 r#"
723//- /main.rs crate:main deps:core
724#[derive(Clone)]
725struct S;
726#[derive(Clone)]
727struct Wrapper<T>(T);
728struct NonClone;
729fn test() {
730 (Wrapper(S).clone(), Wrapper(NonClone).clone());
731 //^ (Wrapper<S>, {unknown})
732}
733
734//- /lib.rs crate:core
735#[prelude_import]
736use clone::*;
737mod clone {
738 trait Clone {
739 fn clone(&self) -> Self;
740 }
741}
742"#,
743 );
744}
745
746#[test]
747fn infer_custom_derive_simple() {
748 // FIXME: this test current now do nothing
749 check_types(
750 r#"
751//- /main.rs crate:main
752use foo::Foo;
753
754#[derive(Foo)]
755struct S{}
756
757fn test() {
758 S{};
759} //^ S
760"#,
761 );
762}
763
764#[test]
765fn macro_in_arm() {
766 check_infer(
767 r#"
768 macro_rules! unit {
769 () => { () };
770 }
771
772 fn main() {
773 let x = match () {
774 unit!() => 92u32,
775 };
776 }
777 "#,
778 expect![[r#"
779 51..110 '{ ... }; }': ()
780 61..62 'x': u32
781 65..107 'match ... }': u32
782 71..73 '()': ()
783 84..91 'unit!()': ()
784 95..100 '92u32': u32
785 "#]],
786 );
787}
diff --git a/crates/ra_hir_ty/src/tests/method_resolution.rs b/crates/ra_hir_ty/src/tests/method_resolution.rs
deleted file mode 100644
index fa68355aa..000000000
--- a/crates/ra_hir_ty/src/tests/method_resolution.rs
+++ /dev/null
@@ -1,1053 +0,0 @@
1use expect::expect;
2
3use super::{check_infer, check_types};
4
5#[test]
6fn infer_slice_method() {
7 check_infer(
8 r#"
9 #[lang = "slice"]
10 impl<T> [T] {
11 fn foo(&self) -> T {
12 loop {}
13 }
14 }
15
16 #[lang = "slice_alloc"]
17 impl<T> [T] {}
18
19 fn test(x: &[u8]) {
20 <[_]>::foo(x);
21 }
22 "#,
23 expect![[r#"
24 44..48 'self': &[T]
25 55..78 '{ ... }': T
26 65..72 'loop {}': !
27 70..72 '{}': ()
28 130..131 'x': &[u8]
29 140..162 '{ ...(x); }': ()
30 146..156 '<[_]>::foo': fn foo<u8>(&[u8]) -> u8
31 146..159 '<[_]>::foo(x)': u8
32 157..158 'x': &[u8]
33 "#]],
34 );
35}
36
37#[test]
38fn infer_associated_method_struct() {
39 check_infer(
40 r#"
41 struct A { x: u32 }
42
43 impl A {
44 fn new() -> A {
45 A { x: 0 }
46 }
47 }
48 fn test() {
49 let a = A::new();
50 a.x;
51 }
52 "#,
53 expect![[r#"
54 48..74 '{ ... }': A
55 58..68 'A { x: 0 }': A
56 65..66 '0': u32
57 87..121 '{ ...a.x; }': ()
58 97..98 'a': A
59 101..107 'A::new': fn new() -> A
60 101..109 'A::new()': A
61 115..116 'a': A
62 115..118 'a.x': u32
63 "#]],
64 );
65}
66
67#[test]
68fn infer_associated_method_enum() {
69 check_infer(
70 r#"
71 enum A { B, C }
72
73 impl A {
74 pub fn b() -> A {
75 A::B
76 }
77 pub fn c() -> A {
78 A::C
79 }
80 }
81 fn test() {
82 let a = A::b();
83 a;
84 let c = A::c();
85 c;
86 }
87 "#,
88 expect![[r#"
89 46..66 '{ ... }': A
90 56..60 'A::B': A
91 87..107 '{ ... }': A
92 97..101 'A::C': A
93 120..177 '{ ... c; }': ()
94 130..131 'a': A
95 134..138 'A::b': fn b() -> A
96 134..140 'A::b()': A
97 146..147 'a': A
98 157..158 'c': A
99 161..165 'A::c': fn c() -> A
100 161..167 'A::c()': A
101 173..174 'c': A
102 "#]],
103 );
104}
105
106#[test]
107fn infer_associated_method_with_modules() {
108 check_infer(
109 r#"
110 mod a {
111 struct A;
112 impl A { pub fn thing() -> A { A {} }}
113 }
114
115 mod b {
116 struct B;
117 impl B { pub fn thing() -> u32 { 99 }}
118
119 mod c {
120 struct C;
121 impl C { pub fn thing() -> C { C {} }}
122 }
123 }
124 use b::c;
125
126 fn test() {
127 let x = a::A::thing();
128 let y = b::B::thing();
129 let z = c::C::thing();
130 }
131 "#,
132 expect![[r#"
133 55..63 '{ A {} }': A
134 57..61 'A {}': A
135 125..131 '{ 99 }': u32
136 127..129 '99': u32
137 201..209 '{ C {} }': C
138 203..207 'C {}': C
139 240..324 '{ ...g(); }': ()
140 250..251 'x': A
141 254..265 'a::A::thing': fn thing() -> A
142 254..267 'a::A::thing()': A
143 277..278 'y': u32
144 281..292 'b::B::thing': fn thing() -> u32
145 281..294 'b::B::thing()': u32
146 304..305 'z': C
147 308..319 'c::C::thing': fn thing() -> C
148 308..321 'c::C::thing()': C
149 "#]],
150 );
151}
152
153#[test]
154fn infer_associated_method_generics() {
155 check_infer(
156 r#"
157 struct Gen<T> {
158 val: T
159 }
160
161 impl<T> Gen<T> {
162 pub fn make(val: T) -> Gen<T> {
163 Gen { val }
164 }
165 }
166
167 fn test() {
168 let a = Gen::make(0u32);
169 }
170 "#,
171 expect![[r#"
172 63..66 'val': T
173 81..108 '{ ... }': Gen<T>
174 91..102 'Gen { val }': Gen<T>
175 97..100 'val': T
176 122..154 '{ ...32); }': ()
177 132..133 'a': Gen<u32>
178 136..145 'Gen::make': fn make<u32>(u32) -> Gen<u32>
179 136..151 'Gen::make(0u32)': Gen<u32>
180 146..150 '0u32': u32
181 "#]],
182 );
183}
184
185#[test]
186fn infer_associated_method_generics_without_args() {
187 check_infer(
188 r#"
189 struct Gen<T> {
190 val: T
191 }
192
193 impl<T> Gen<T> {
194 pub fn make() -> Gen<T> {
195 loop { }
196 }
197 }
198
199 fn test() {
200 let a = Gen::<u32>::make();
201 }
202 "#,
203 expect![[r#"
204 75..99 '{ ... }': Gen<T>
205 85..93 'loop { }': !
206 90..93 '{ }': ()
207 113..148 '{ ...e(); }': ()
208 123..124 'a': Gen<u32>
209 127..143 'Gen::<...::make': fn make<u32>() -> Gen<u32>
210 127..145 'Gen::<...make()': Gen<u32>
211 "#]],
212 );
213}
214
215#[test]
216fn infer_associated_method_generics_2_type_params_without_args() {
217 check_infer(
218 r#"
219 struct Gen<T, U> {
220 val: T,
221 val2: U,
222 }
223
224 impl<T> Gen<u32, T> {
225 pub fn make() -> Gen<u32,T> {
226 loop { }
227 }
228 }
229
230 fn test() {
231 let a = Gen::<u32, u64>::make();
232 }
233 "#,
234 expect![[r#"
235 101..125 '{ ... }': Gen<u32, T>
236 111..119 'loop { }': !
237 116..119 '{ }': ()
238 139..179 '{ ...e(); }': ()
239 149..150 'a': Gen<u32, u64>
240 153..174 'Gen::<...::make': fn make<u64>() -> Gen<u32, u64>
241 153..176 'Gen::<...make()': Gen<u32, u64>
242 "#]],
243 );
244}
245
246#[test]
247fn cross_crate_associated_method_call() {
248 check_types(
249 r#"
250//- /main.rs crate:main deps:other_crate
251fn test() {
252 let x = other_crate::foo::S::thing();
253 x;
254} //^ i128
255
256//- /lib.rs crate:other_crate
257mod foo {
258 struct S;
259 impl S {
260 fn thing() -> i128 {}
261 }
262}
263"#,
264 );
265}
266
267#[test]
268fn infer_trait_method_simple() {
269 // the trait implementation is intentionally incomplete -- it shouldn't matter
270 check_infer(
271 r#"
272 trait Trait1 {
273 fn method(&self) -> u32;
274 }
275 struct S1;
276 impl Trait1 for S1 {}
277 trait Trait2 {
278 fn method(&self) -> i128;
279 }
280 struct S2;
281 impl Trait2 for S2 {}
282 fn test() {
283 S1.method(); // -> u32
284 S2.method(); // -> i128
285 }
286 "#,
287 expect![[r#"
288 30..34 'self': &Self
289 109..113 'self': &Self
290 169..227 '{ ...i128 }': ()
291 175..177 'S1': S1
292 175..186 'S1.method()': u32
293 202..204 'S2': S2
294 202..213 'S2.method()': i128
295 "#]],
296 );
297}
298
299#[test]
300fn infer_trait_method_scoped() {
301 // the trait implementation is intentionally incomplete -- it shouldn't matter
302 check_infer(
303 r#"
304 struct S;
305 mod foo {
306 pub trait Trait1 {
307 fn method(&self) -> u32;
308 }
309 impl Trait1 for super::S {}
310 }
311 mod bar {
312 pub trait Trait2 {
313 fn method(&self) -> i128;
314 }
315 impl Trait2 for super::S {}
316 }
317
318 mod foo_test {
319 use super::S;
320 use super::foo::Trait1;
321 fn test() {
322 S.method(); // -> u32
323 }
324 }
325
326 mod bar_test {
327 use super::S;
328 use super::bar::Trait2;
329 fn test() {
330 S.method(); // -> i128
331 }
332 }
333 "#,
334 expect![[r#"
335 62..66 'self': &Self
336 168..172 'self': &Self
337 299..336 '{ ... }': ()
338 309..310 'S': S
339 309..319 'S.method()': u32
340 415..453 '{ ... }': ()
341 425..426 'S': S
342 425..435 'S.method()': i128
343 "#]],
344 );
345}
346
347#[test]
348fn infer_trait_method_generic_1() {
349 // the trait implementation is intentionally incomplete -- it shouldn't matter
350 check_infer(
351 r#"
352 trait Trait<T> {
353 fn method(&self) -> T;
354 }
355 struct S;
356 impl Trait<u32> for S {}
357 fn test() {
358 S.method();
359 }
360 "#,
361 expect![[r#"
362 32..36 'self': &Self
363 91..110 '{ ...d(); }': ()
364 97..98 'S': S
365 97..107 'S.method()': u32
366 "#]],
367 );
368}
369
370#[test]
371fn infer_trait_method_generic_more_params() {
372 // the trait implementation is intentionally incomplete -- it shouldn't matter
373 check_infer(
374 r#"
375 trait Trait<T1, T2, T3> {
376 fn method1(&self) -> (T1, T2, T3);
377 fn method2(&self) -> (T3, T2, T1);
378 }
379 struct S1;
380 impl Trait<u8, u16, u32> for S1 {}
381 struct S2;
382 impl<T> Trait<i8, i16, T> for S2 {}
383 fn test() {
384 S1.method1(); // u8, u16, u32
385 S1.method2(); // u32, u16, u8
386 S2.method1(); // i8, i16, {unknown}
387 S2.method2(); // {unknown}, i16, i8
388 }
389 "#,
390 expect![[r#"
391 42..46 'self': &Self
392 81..85 'self': &Self
393 209..360 '{ ..., i8 }': ()
394 215..217 'S1': S1
395 215..227 'S1.method1()': (u8, u16, u32)
396 249..251 'S1': S1
397 249..261 'S1.method2()': (u32, u16, u8)
398 283..285 'S2': S2
399 283..295 'S2.method1()': (i8, i16, {unknown})
400 323..325 'S2': S2
401 323..335 'S2.method2()': ({unknown}, i16, i8)
402 "#]],
403 );
404}
405
406#[test]
407fn infer_trait_method_generic_2() {
408 // the trait implementation is intentionally incomplete -- it shouldn't matter
409 check_infer(
410 r#"
411 trait Trait<T> {
412 fn method(&self) -> T;
413 }
414 struct S<T>(T);
415 impl<U> Trait<U> for S<U> {}
416 fn test() {
417 S(1u32).method();
418 }
419 "#,
420 expect![[r#"
421 32..36 'self': &Self
422 101..126 '{ ...d(); }': ()
423 107..108 'S': S<u32>(u32) -> S<u32>
424 107..114 'S(1u32)': S<u32>
425 107..123 'S(1u32...thod()': u32
426 109..113 '1u32': u32
427 "#]],
428 );
429}
430
431#[test]
432fn infer_trait_assoc_method() {
433 check_infer(
434 r#"
435 trait Default {
436 fn default() -> Self;
437 }
438 struct S;
439 impl Default for S {}
440 fn test() {
441 let s1: S = Default::default();
442 let s2 = S::default();
443 let s3 = <S as Default>::default();
444 }
445 "#,
446 expect![[r#"
447 86..192 '{ ...t(); }': ()
448 96..98 's1': S
449 104..120 'Defaul...efault': fn default<S>() -> S
450 104..122 'Defaul...ault()': S
451 132..134 's2': S
452 137..147 'S::default': fn default<S>() -> S
453 137..149 'S::default()': S
454 159..161 's3': S
455 164..187 '<S as ...efault': fn default<S>() -> S
456 164..189 '<S as ...ault()': S
457 "#]],
458 );
459}
460
461#[test]
462fn infer_trait_assoc_method_generics_1() {
463 check_infer(
464 r#"
465 trait Trait<T> {
466 fn make() -> T;
467 }
468 struct S;
469 impl Trait<u32> for S {}
470 struct G<T>;
471 impl<T> Trait<T> for G<T> {}
472 fn test() {
473 let a = S::make();
474 let b = G::<u64>::make();
475 let c: f64 = G::make();
476 }
477 "#,
478 expect![[r#"
479 126..210 '{ ...e(); }': ()
480 136..137 'a': u32
481 140..147 'S::make': fn make<S, u32>() -> u32
482 140..149 'S::make()': u32
483 159..160 'b': u64
484 163..177 'G::<u64>::make': fn make<G<u64>, u64>() -> u64
485 163..179 'G::<u6...make()': u64
486 189..190 'c': f64
487 198..205 'G::make': fn make<G<f64>, f64>() -> f64
488 198..207 'G::make()': f64
489 "#]],
490 );
491}
492
493#[test]
494fn infer_trait_assoc_method_generics_2() {
495 check_infer(
496 r#"
497 trait Trait<T> {
498 fn make<U>() -> (T, U);
499 }
500 struct S;
501 impl Trait<u32> for S {}
502 struct G<T>;
503 impl<T> Trait<T> for G<T> {}
504 fn test() {
505 let a = S::make::<i64>();
506 let b: (_, i64) = S::make();
507 let c = G::<u32>::make::<i64>();
508 let d: (u32, _) = G::make::<i64>();
509 let e: (u32, i64) = G::make();
510 }
511 "#,
512 expect![[r#"
513 134..312 '{ ...e(); }': ()
514 144..145 'a': (u32, i64)
515 148..162 'S::make::<i64>': fn make<S, u32, i64>() -> (u32, i64)
516 148..164 'S::mak...i64>()': (u32, i64)
517 174..175 'b': (u32, i64)
518 188..195 'S::make': fn make<S, u32, i64>() -> (u32, i64)
519 188..197 'S::make()': (u32, i64)
520 207..208 'c': (u32, i64)
521 211..232 'G::<u3...:<i64>': fn make<G<u32>, u32, i64>() -> (u32, i64)
522 211..234 'G::<u3...i64>()': (u32, i64)
523 244..245 'd': (u32, i64)
524 258..272 'G::make::<i64>': fn make<G<u32>, u32, i64>() -> (u32, i64)
525 258..274 'G::mak...i64>()': (u32, i64)
526 284..285 'e': (u32, i64)
527 300..307 'G::make': fn make<G<u32>, u32, i64>() -> (u32, i64)
528 300..309 'G::make()': (u32, i64)
529 "#]],
530 );
531}
532
533#[test]
534fn infer_trait_assoc_method_generics_3() {
535 check_infer(
536 r#"
537 trait Trait<T> {
538 fn make() -> (Self, T);
539 }
540 struct S<T>;
541 impl Trait<i64> for S<i32> {}
542 fn test() {
543 let a = S::make();
544 }
545 "#,
546 expect![[r#"
547 100..126 '{ ...e(); }': ()
548 110..111 'a': (S<i32>, i64)
549 114..121 'S::make': fn make<S<i32>, i64>() -> (S<i32>, i64)
550 114..123 'S::make()': (S<i32>, i64)
551 "#]],
552 );
553}
554
555#[test]
556fn infer_trait_assoc_method_generics_4() {
557 check_infer(
558 r#"
559 trait Trait<T> {
560 fn make() -> (Self, T);
561 }
562 struct S<T>;
563 impl Trait<i64> for S<u64> {}
564 impl Trait<i32> for S<u32> {}
565 fn test() {
566 let a: (S<u64>, _) = S::make();
567 let b: (_, i32) = S::make();
568 }
569 "#,
570 expect![[r#"
571 130..202 '{ ...e(); }': ()
572 140..141 'a': (S<u64>, i64)
573 157..164 'S::make': fn make<S<u64>, i64>() -> (S<u64>, i64)
574 157..166 'S::make()': (S<u64>, i64)
575 176..177 'b': (S<u32>, i32)
576 190..197 'S::make': fn make<S<u32>, i32>() -> (S<u32>, i32)
577 190..199 'S::make()': (S<u32>, i32)
578 "#]],
579 );
580}
581
582#[test]
583fn infer_trait_assoc_method_generics_5() {
584 check_infer(
585 r#"
586 trait Trait<T> {
587 fn make<U>() -> (Self, T, U);
588 }
589 struct S<T>;
590 impl Trait<i64> for S<u64> {}
591 fn test() {
592 let a = <S as Trait<i64>>::make::<u8>();
593 let b: (S<u64>, _, _) = Trait::<i64>::make::<u8>();
594 }
595 "#,
596 expect![[r#"
597 106..210 '{ ...>(); }': ()
598 116..117 'a': (S<u64>, i64, u8)
599 120..149 '<S as ...::<u8>': fn make<S<u64>, i64, u8>() -> (S<u64>, i64, u8)
600 120..151 '<S as ...<u8>()': (S<u64>, i64, u8)
601 161..162 'b': (S<u64>, i64, u8)
602 181..205 'Trait:...::<u8>': fn make<S<u64>, i64, u8>() -> (S<u64>, i64, u8)
603 181..207 'Trait:...<u8>()': (S<u64>, i64, u8)
604 "#]],
605 );
606}
607
608#[test]
609fn infer_call_trait_method_on_generic_param_1() {
610 check_infer(
611 r#"
612 trait Trait {
613 fn method(&self) -> u32;
614 }
615 fn test<T: Trait>(t: T) {
616 t.method();
617 }
618 "#,
619 expect![[r#"
620 29..33 'self': &Self
621 63..64 't': T
622 69..88 '{ ...d(); }': ()
623 75..76 't': T
624 75..85 't.method()': u32
625 "#]],
626 );
627}
628
629#[test]
630fn infer_call_trait_method_on_generic_param_2() {
631 check_infer(
632 r#"
633 trait Trait<T> {
634 fn method(&self) -> T;
635 }
636 fn test<U, T: Trait<U>>(t: T) {
637 t.method();
638 }
639 "#,
640 expect![[r#"
641 32..36 'self': &Self
642 70..71 't': T
643 76..95 '{ ...d(); }': ()
644 82..83 't': T
645 82..92 't.method()': U
646 "#]],
647 );
648}
649
650#[test]
651fn infer_with_multiple_trait_impls() {
652 check_infer(
653 r#"
654 trait Into<T> {
655 fn into(self) -> T;
656 }
657 struct S;
658 impl Into<u32> for S {}
659 impl Into<u64> for S {}
660 fn test() {
661 let x: u32 = S.into();
662 let y: u64 = S.into();
663 let z = Into::<u64>::into(S);
664 }
665 "#,
666 expect![[r#"
667 28..32 'self': Self
668 110..201 '{ ...(S); }': ()
669 120..121 'x': u32
670 129..130 'S': S
671 129..137 'S.into()': u32
672 147..148 'y': u64
673 156..157 'S': S
674 156..164 'S.into()': u64
675 174..175 'z': u64
676 178..195 'Into::...::into': fn into<S, u64>(S) -> u64
677 178..198 'Into::...nto(S)': u64
678 196..197 'S': S
679 "#]],
680 );
681}
682
683#[test]
684fn method_resolution_unify_impl_self_type() {
685 check_types(
686 r#"
687struct S<T>;
688impl S<u32> { fn foo(&self) -> u8 {} }
689impl S<i32> { fn foo(&self) -> i8 {} }
690fn test() { (S::<u32>.foo(), S::<i32>.foo()); }
691 //^ (u8, i8)
692"#,
693 );
694}
695
696#[test]
697fn method_resolution_trait_before_autoref() {
698 check_types(
699 r#"
700trait Trait { fn foo(self) -> u128; }
701struct S;
702impl S { fn foo(&self) -> i8 { 0 } }
703impl Trait for S { fn foo(self) -> u128 { 0 } }
704fn test() { S.foo(); }
705 //^ u128
706"#,
707 );
708}
709
710#[test]
711fn method_resolution_by_value_before_autoref() {
712 check_types(
713 r#"
714trait Clone { fn clone(&self) -> Self; }
715struct S;
716impl Clone for S {}
717impl Clone for &S {}
718fn test() { (S.clone(), (&S).clone(), (&&S).clone()); }
719 //^ (S, S, &S)
720"#,
721 );
722}
723
724#[test]
725fn method_resolution_trait_before_autoderef() {
726 check_types(
727 r#"
728trait Trait { fn foo(self) -> u128; }
729struct S;
730impl S { fn foo(self) -> i8 { 0 } }
731impl Trait for &S { fn foo(self) -> u128 { 0 } }
732fn test() { (&S).foo(); }
733 //^ u128
734"#,
735 );
736}
737
738#[test]
739fn method_resolution_impl_before_trait() {
740 check_types(
741 r#"
742trait Trait { fn foo(self) -> u128; }
743struct S;
744impl S { fn foo(self) -> i8 { 0 } }
745impl Trait for S { fn foo(self) -> u128 { 0 } }
746fn test() { S.foo(); }
747 //^ i8
748"#,
749 );
750}
751
752#[test]
753fn method_resolution_impl_ref_before_trait() {
754 check_types(
755 r#"
756trait Trait { fn foo(self) -> u128; }
757struct S;
758impl S { fn foo(&self) -> i8 { 0 } }
759impl Trait for &S { fn foo(self) -> u128 { 0 } }
760fn test() { S.foo(); }
761 //^ i8
762"#,
763 );
764}
765
766#[test]
767fn method_resolution_trait_autoderef() {
768 check_types(
769 r#"
770trait Trait { fn foo(self) -> u128; }
771struct S;
772impl Trait for S { fn foo(self) -> u128 { 0 } }
773fn test() { (&S).foo(); }
774 //^ u128
775"#,
776 );
777}
778
779#[test]
780fn method_resolution_unsize_array() {
781 check_types(
782 r#"
783#[lang = "slice"]
784impl<T> [T] {
785 fn len(&self) -> usize { loop {} }
786}
787fn test() {
788 let a = [1, 2, 3];
789 a.len();
790} //^ usize
791"#,
792 );
793}
794
795#[test]
796fn method_resolution_trait_from_prelude() {
797 check_types(
798 r#"
799//- /main.rs crate:main deps:other_crate
800struct S;
801impl Clone for S {}
802
803fn test() {
804 S.clone();
805 //^ S
806}
807
808//- /lib.rs crate:other_crate
809#[prelude_import] use foo::*;
810
811mod foo {
812 trait Clone {
813 fn clone(&self) -> Self;
814 }
815}
816"#,
817 );
818}
819
820#[test]
821fn method_resolution_where_clause_for_unknown_trait() {
822 // The blanket impl currently applies because we ignore the unresolved where clause
823 check_types(
824 r#"
825trait Trait { fn foo(self) -> u128; }
826struct S;
827impl<T> Trait for T where T: UnknownTrait {}
828fn test() { (&S).foo(); }
829 //^ u128
830"#,
831 );
832}
833
834#[test]
835fn method_resolution_where_clause_not_met() {
836 // The blanket impl shouldn't apply because we can't prove S: Clone
837 // This is also to make sure that we don't resolve to the foo method just
838 // because that's the only method named foo we can find, which would make
839 // the below tests not work
840 check_types(
841 r#"
842trait Clone {}
843trait Trait { fn foo(self) -> u128; }
844struct S;
845impl<T> Trait for T where T: Clone {}
846fn test() { (&S).foo(); }
847 //^ {unknown}
848"#,
849 );
850}
851
852#[test]
853fn method_resolution_where_clause_inline_not_met() {
854 // The blanket impl shouldn't apply because we can't prove S: Clone
855 check_types(
856 r#"
857trait Clone {}
858trait Trait { fn foo(self) -> u128; }
859struct S;
860impl<T: Clone> Trait for T {}
861fn test() { (&S).foo(); }
862 //^ {unknown}
863"#,
864 );
865}
866
867#[test]
868fn method_resolution_where_clause_1() {
869 check_types(
870 r#"
871trait Clone {}
872trait Trait { fn foo(self) -> u128; }
873struct S;
874impl Clone for S {}
875impl<T> Trait for T where T: Clone {}
876fn test() { S.foo(); }
877 //^ u128
878"#,
879 );
880}
881
882#[test]
883fn method_resolution_where_clause_2() {
884 check_types(
885 r#"
886trait Into<T> { fn into(self) -> T; }
887trait From<T> { fn from(other: T) -> Self; }
888struct S1;
889struct S2;
890impl From<S2> for S1 {}
891impl<T, U> Into<U> for T where U: From<T> {}
892fn test() { S2.into(); }
893 //^ {unknown}
894"#,
895 );
896}
897
898#[test]
899fn method_resolution_where_clause_inline() {
900 check_types(
901 r#"
902trait Into<T> { fn into(self) -> T; }
903trait From<T> { fn from(other: T) -> Self; }
904struct S1;
905struct S2;
906impl From<S2> for S1 {}
907impl<T, U: From<T>> Into<U> for T {}
908fn test() { S2.into(); }
909 //^ {unknown}
910"#,
911 );
912}
913
914#[test]
915fn method_resolution_overloaded_method() {
916 test_utils::mark::check!(impl_self_type_match_without_receiver);
917 check_types(
918 r#"
919struct Wrapper<T>(T);
920struct Foo<T>(T);
921struct Bar<T>(T);
922
923impl<T> Wrapper<Foo<T>> {
924 pub fn new(foo_: T) -> Self {
925 Wrapper(Foo(foo_))
926 }
927}
928
929impl<T> Wrapper<Bar<T>> {
930 pub fn new(bar_: T) -> Self {
931 Wrapper(Bar(bar_))
932 }
933}
934
935fn main() {
936 let a = Wrapper::<Foo<f32>>::new(1.0);
937 let b = Wrapper::<Bar<f32>>::new(1.0);
938 (a, b);
939 //^ (Wrapper<Foo<f32>>, Wrapper<Bar<f32>>)
940}
941"#,
942 );
943}
944
945#[test]
946fn method_resolution_encountering_fn_type() {
947 check_types(
948 r#"
949//- /main.rs
950fn foo() {}
951trait FnOnce { fn call(self); }
952fn test() { foo.call(); }
953 //^ {unknown}
954"#,
955 );
956}
957
958#[test]
959fn method_resolution_non_parameter_type() {
960 check_types(
961 r#"
962mod a {
963 pub trait Foo {
964 fn foo(&self);
965 }
966}
967
968struct Wrapper<T>(T);
969fn foo<T>(t: Wrapper<T>)
970where
971 Wrapper<T>: a::Foo,
972{
973 t.foo();
974} //^ {unknown}
975"#,
976 );
977}
978
979#[test]
980fn method_resolution_3373() {
981 check_types(
982 r#"
983struct A<T>(T);
984
985impl A<i32> {
986 fn from(v: i32) -> A<i32> { A(v) }
987}
988
989fn main() {
990 A::from(3);
991} //^ A<i32>
992"#,
993 );
994}
995
996#[test]
997fn method_resolution_slow() {
998 // this can get quite slow if we set the solver size limit too high
999 check_types(
1000 r#"
1001trait SendX {}
1002
1003struct S1; impl SendX for S1 {}
1004struct S2; impl SendX for S2 {}
1005struct U1;
1006
1007trait Trait { fn method(self); }
1008
1009struct X1<A, B> {}
1010impl<A, B> SendX for X1<A, B> where A: SendX, B: SendX {}
1011
1012struct S<B, C> {}
1013
1014trait FnX {}
1015
1016impl<B, C> Trait for S<B, C> where C: FnX, B: SendX {}
1017
1018fn test() { (S {}).method(); }
1019 //^ ()
1020"#,
1021 );
1022}
1023
1024#[test]
1025fn dyn_trait_super_trait_not_in_scope() {
1026 check_infer(
1027 r#"
1028 mod m {
1029 pub trait SuperTrait {
1030 fn foo(&self) -> u32 { 0 }
1031 }
1032 }
1033 trait Trait: m::SuperTrait {}
1034
1035 struct S;
1036 impl m::SuperTrait for S {}
1037 impl Trait for S {}
1038
1039 fn test(d: &dyn Trait) {
1040 d.foo();
1041 }
1042 "#,
1043 expect![[r#"
1044 51..55 'self': &Self
1045 64..69 '{ 0 }': u32
1046 66..67 '0': u32
1047 176..177 'd': &dyn Trait
1048 191..207 '{ ...o(); }': ()
1049 197..198 'd': &dyn Trait
1050 197..204 'd.foo()': u32
1051 "#]],
1052 );
1053}
diff --git a/crates/ra_hir_ty/src/tests/never_type.rs b/crates/ra_hir_ty/src/tests/never_type.rs
deleted file mode 100644
index 49538b572..000000000
--- a/crates/ra_hir_ty/src/tests/never_type.rs
+++ /dev/null
@@ -1,409 +0,0 @@
1use expect::expect;
2
3use super::{check_infer_with_mismatches, check_types};
4
5#[test]
6fn infer_never1() {
7 check_types(
8 r#"
9fn test() {
10 let t = return;
11 t;
12} //^ !
13"#,
14 );
15}
16
17#[test]
18fn infer_never2() {
19 check_types(
20 r#"
21fn gen<T>() -> T { loop {} }
22
23fn test() {
24 let a = gen();
25 if false { a } else { loop {} };
26 a;
27} //^ !
28"#,
29 );
30}
31
32#[test]
33fn infer_never3() {
34 check_types(
35 r#"
36fn gen<T>() -> T { loop {} }
37
38fn test() {
39 let a = gen();
40 if false { loop {} } else { a };
41 a;
42 //^ !
43}
44"#,
45 );
46}
47
48#[test]
49fn never_type_in_generic_args() {
50 check_types(
51 r#"
52enum Option<T> { None, Some(T) }
53
54fn test() {
55 let a = if true { Option::None } else { Option::Some(return) };
56 a;
57} //^ Option<!>
58"#,
59 );
60}
61
62#[test]
63fn never_type_can_be_reinferred1() {
64 check_types(
65 r#"
66fn gen<T>() -> T { loop {} }
67
68fn test() {
69 let a = gen();
70 if false { loop {} } else { a };
71 a;
72 //^ ()
73 if false { a };
74}
75"#,
76 );
77}
78
79#[test]
80fn never_type_can_be_reinferred2() {
81 check_types(
82 r#"
83enum Option<T> { None, Some(T) }
84
85fn test() {
86 let a = if true { Option::None } else { Option::Some(return) };
87 a;
88 //^ Option<i32>
89 match 42 {
90 42 => a,
91 _ => Option::Some(42),
92 };
93}
94"#,
95 );
96}
97
98#[test]
99fn never_type_can_be_reinferred3() {
100 check_types(
101 r#"
102enum Option<T> { None, Some(T) }
103
104fn test() {
105 let a = if true { Option::None } else { Option::Some(return) };
106 a;
107 //^ Option<&str>
108 match 42 {
109 42 => a,
110 _ => Option::Some("str"),
111 };
112}
113"#,
114 );
115}
116
117#[test]
118fn match_no_arm() {
119 check_types(
120 r#"
121enum Void {}
122
123fn test(a: Void) {
124 let t = match a {};
125 t;
126} //^ !
127"#,
128 );
129}
130
131#[test]
132fn match_unknown_arm() {
133 check_types(
134 r#"
135fn test(a: Option) {
136 let t = match 0 {
137 _ => unknown,
138 };
139 t;
140} //^ {unknown}
141"#,
142 );
143}
144
145#[test]
146fn if_never() {
147 check_types(
148 r#"
149fn test() {
150 let i = if true {
151 loop {}
152 } else {
153 3.0
154 };
155 i;
156} //^ f64
157"#,
158 );
159}
160
161#[test]
162fn if_else_never() {
163 check_types(
164 r#"
165fn test(input: bool) {
166 let i = if input {
167 2.0
168 } else {
169 return
170 };
171 i;
172} //^ f64
173"#,
174 );
175}
176
177#[test]
178fn match_first_arm_never() {
179 check_types(
180 r#"
181fn test(a: i32) {
182 let i = match a {
183 1 => return,
184 2 => 2.0,
185 3 => loop {},
186 _ => 3.0,
187 };
188 i;
189} //^ f64
190"#,
191 );
192}
193
194#[test]
195fn match_second_arm_never() {
196 check_types(
197 r#"
198fn test(a: i32) {
199 let i = match a {
200 1 => 3.0,
201 2 => loop {},
202 3 => 3.0,
203 _ => return,
204 };
205 i;
206} //^ f64
207"#,
208 );
209}
210
211#[test]
212fn match_all_arms_never() {
213 check_types(
214 r#"
215fn test(a: i32) {
216 let i = match a {
217 2 => return,
218 _ => loop {},
219 };
220 i;
221} //^ !
222"#,
223 );
224}
225
226#[test]
227fn match_no_never_arms() {
228 check_types(
229 r#"
230fn test(a: i32) {
231 let i = match a {
232 2 => 2.0,
233 _ => 3.0,
234 };
235 i;
236} //^ f64
237"#,
238 );
239}
240
241#[test]
242fn diverging_expression_1() {
243 check_infer_with_mismatches(
244 r"
245 //- /main.rs
246 fn test1() {
247 let x: u32 = return;
248 }
249 fn test2() {
250 let x: u32 = { return; };
251 }
252 fn test3() {
253 let x: u32 = loop {};
254 }
255 fn test4() {
256 let x: u32 = { loop {} };
257 }
258 fn test5() {
259 let x: u32 = { if true { loop {}; } else { loop {}; } };
260 }
261 fn test6() {
262 let x: u32 = { let y: u32 = { loop {}; }; };
263 }
264 ",
265 expect![[r"
266 11..39 '{ ...urn; }': ()
267 21..22 'x': u32
268 30..36 'return': !
269 51..84 '{ ...; }; }': ()
270 61..62 'x': u32
271 70..81 '{ return; }': u32
272 72..78 'return': !
273 96..125 '{ ... {}; }': ()
274 106..107 'x': u32
275 115..122 'loop {}': !
276 120..122 '{}': ()
277 137..170 '{ ...} }; }': ()
278 147..148 'x': u32
279 156..167 '{ loop {} }': u32
280 158..165 'loop {}': !
281 163..165 '{}': ()
282 182..246 '{ ...} }; }': ()
283 192..193 'x': u32
284 201..243 '{ if t...}; } }': u32
285 203..241 'if tru... {}; }': u32
286 206..210 'true': bool
287 211..223 '{ loop {}; }': u32
288 213..220 'loop {}': !
289 218..220 '{}': ()
290 229..241 '{ loop {}; }': u32
291 231..238 'loop {}': !
292 236..238 '{}': ()
293 258..310 '{ ...; }; }': ()
294 268..269 'x': u32
295 277..307 '{ let ...; }; }': u32
296 283..284 'y': u32
297 292..304 '{ loop {}; }': u32
298 294..301 'loop {}': !
299 299..301 '{}': ()
300 "]],
301 );
302}
303
304#[test]
305fn diverging_expression_2() {
306 check_infer_with_mismatches(
307 r#"
308 //- /main.rs
309 fn test1() {
310 // should give type mismatch
311 let x: u32 = { loop {}; "foo" };
312 }
313 "#,
314 expect![[r#"
315 11..84 '{ ..." }; }': ()
316 54..55 'x': u32
317 63..81 '{ loop...foo" }': &str
318 65..72 'loop {}': !
319 70..72 '{}': ()
320 74..79 '"foo"': &str
321 63..81: expected u32, got &str
322 74..79: expected u32, got &str
323 "#]],
324 );
325}
326
327#[test]
328fn diverging_expression_3_break() {
329 check_infer_with_mismatches(
330 r"
331 //- /main.rs
332 fn test1() {
333 // should give type mismatch
334 let x: u32 = { loop { break; } };
335 }
336 fn test2() {
337 // should give type mismatch
338 let x: u32 = { for a in b { break; }; };
339 // should give type mismatch as well
340 let x: u32 = { for a in b {}; };
341 // should give type mismatch as well
342 let x: u32 = { for a in b { return; }; };
343 }
344 fn test3() {
345 // should give type mismatch
346 let x: u32 = { while true { break; }; };
347 // should give type mismatch as well -- there's an implicit break, even if it's never hit
348 let x: u32 = { while true {}; };
349 // should give type mismatch as well
350 let x: u32 = { while true { return; }; };
351 }
352 ",
353 expect![[r"
354 11..85 '{ ...} }; }': ()
355 54..55 'x': u32
356 63..82 '{ loop...k; } }': ()
357 65..80 'loop { break; }': ()
358 70..80 '{ break; }': ()
359 72..77 'break': !
360 63..82: expected u32, got ()
361 65..80: expected u32, got ()
362 97..343 '{ ...; }; }': ()
363 140..141 'x': u32
364 149..175 '{ for ...; }; }': ()
365 151..172 'for a ...eak; }': ()
366 155..156 'a': {unknown}
367 160..161 'b': {unknown}
368 162..172 '{ break; }': ()
369 164..169 'break': !
370 226..227 'x': u32
371 235..253 '{ for ... {}; }': ()
372 237..250 'for a in b {}': ()
373 241..242 'a': {unknown}
374 246..247 'b': {unknown}
375 248..250 '{}': ()
376 304..305 'x': u32
377 313..340 '{ for ...; }; }': ()
378 315..337 'for a ...urn; }': ()
379 319..320 'a': {unknown}
380 324..325 'b': {unknown}
381 326..337 '{ return; }': ()
382 328..334 'return': !
383 149..175: expected u32, got ()
384 235..253: expected u32, got ()
385 313..340: expected u32, got ()
386 355..654 '{ ...; }; }': ()
387 398..399 'x': u32
388 407..433 '{ whil...; }; }': ()
389 409..430 'while ...eak; }': ()
390 415..419 'true': bool
391 420..430 '{ break; }': ()
392 422..427 'break': !
393 537..538 'x': u32
394 546..564 '{ whil... {}; }': ()
395 548..561 'while true {}': ()
396 554..558 'true': bool
397 559..561 '{}': ()
398 615..616 'x': u32
399 624..651 '{ whil...; }; }': ()
400 626..648 'while ...urn; }': ()
401 632..636 'true': bool
402 637..648 '{ return; }': ()
403 639..645 'return': !
404 407..433: expected u32, got ()
405 546..564: expected u32, got ()
406 624..651: expected u32, got ()
407 "]],
408 );
409}
diff --git a/crates/ra_hir_ty/src/tests/patterns.rs b/crates/ra_hir_ty/src/tests/patterns.rs
deleted file mode 100644
index 39fabf7eb..000000000
--- a/crates/ra_hir_ty/src/tests/patterns.rs
+++ /dev/null
@@ -1,656 +0,0 @@
1use expect::expect;
2use test_utils::mark;
3
4use super::{check_infer, check_infer_with_mismatches};
5
6#[test]
7fn infer_pattern() {
8 check_infer(
9 r#"
10 fn test(x: &i32) {
11 let y = x;
12 let &z = x;
13 let a = z;
14 let (c, d) = (1, "hello");
15
16 for (e, f) in some_iter {
17 let g = e;
18 }
19
20 if let [val] = opt {
21 let h = val;
22 }
23
24 let lambda = |a: u64, b, c: i32| { a + b; c };
25
26 let ref ref_to_x = x;
27 let mut mut_x = x;
28 let ref mut mut_ref_to_x = x;
29 let k = mut_ref_to_x;
30 }
31 "#,
32 expect![[r#"
33 8..9 'x': &i32
34 17..368 '{ ...o_x; }': ()
35 27..28 'y': &i32
36 31..32 'x': &i32
37 42..44 '&z': &i32
38 43..44 'z': i32
39 47..48 'x': &i32
40 58..59 'a': i32
41 62..63 'z': i32
42 73..79 '(c, d)': (i32, &str)
43 74..75 'c': i32
44 77..78 'd': &str
45 82..94 '(1, "hello")': (i32, &str)
46 83..84 '1': i32
47 86..93 '"hello"': &str
48 101..151 'for (e... }': ()
49 105..111 '(e, f)': ({unknown}, {unknown})
50 106..107 'e': {unknown}
51 109..110 'f': {unknown}
52 115..124 'some_iter': {unknown}
53 125..151 '{ ... }': ()
54 139..140 'g': {unknown}
55 143..144 'e': {unknown}
56 157..204 'if let... }': ()
57 164..169 '[val]': [{unknown}]
58 165..168 'val': {unknown}
59 172..175 'opt': [{unknown}]
60 176..204 '{ ... }': ()
61 190..191 'h': {unknown}
62 194..197 'val': {unknown}
63 214..220 'lambda': |u64, u64, i32| -> i32
64 223..255 '|a: u6...b; c }': |u64, u64, i32| -> i32
65 224..225 'a': u64
66 232..233 'b': u64
67 235..236 'c': i32
68 243..255 '{ a + b; c }': i32
69 245..246 'a': u64
70 245..250 'a + b': u64
71 249..250 'b': u64
72 252..253 'c': i32
73 266..278 'ref ref_to_x': &&i32
74 281..282 'x': &i32
75 292..301 'mut mut_x': &i32
76 304..305 'x': &i32
77 315..335 'ref mu...f_to_x': &mut &i32
78 338..339 'x': &i32
79 349..350 'k': &mut &i32
80 353..365 'mut_ref_to_x': &mut &i32
81 "#]],
82 );
83}
84
85#[test]
86fn infer_literal_pattern() {
87 check_infer_with_mismatches(
88 r#"
89 fn any<T>() -> T { loop {} }
90 fn test(x: &i32) {
91 if let "foo" = any() {}
92 if let 1 = any() {}
93 if let 1u32 = any() {}
94 if let 1f32 = any() {}
95 if let 1.0 = any() {}
96 if let true = any() {}
97 }
98 "#,
99 expect![[r#"
100 17..28 '{ loop {} }': T
101 19..26 'loop {}': !
102 24..26 '{}': ()
103 37..38 'x': &i32
104 46..208 '{ ...) {} }': ()
105 52..75 'if let...y() {}': ()
106 59..64 '"foo"': &str
107 59..64 '"foo"': &str
108 67..70 'any': fn any<&str>() -> &str
109 67..72 'any()': &str
110 73..75 '{}': ()
111 80..99 'if let...y() {}': ()
112 87..88 '1': i32
113 87..88 '1': i32
114 91..94 'any': fn any<i32>() -> i32
115 91..96 'any()': i32
116 97..99 '{}': ()
117 104..126 'if let...y() {}': ()
118 111..115 '1u32': u32
119 111..115 '1u32': u32
120 118..121 'any': fn any<u32>() -> u32
121 118..123 'any()': u32
122 124..126 '{}': ()
123 131..153 'if let...y() {}': ()
124 138..142 '1f32': f32
125 138..142 '1f32': f32
126 145..148 'any': fn any<f32>() -> f32
127 145..150 'any()': f32
128 151..153 '{}': ()
129 158..179 'if let...y() {}': ()
130 165..168 '1.0': f64
131 165..168 '1.0': f64
132 171..174 'any': fn any<f64>() -> f64
133 171..176 'any()': f64
134 177..179 '{}': ()
135 184..206 'if let...y() {}': ()
136 191..195 'true': bool
137 191..195 'true': bool
138 198..201 'any': fn any<bool>() -> bool
139 198..203 'any()': bool
140 204..206 '{}': ()
141 "#]],
142 );
143}
144
145#[test]
146fn infer_range_pattern() {
147 check_infer_with_mismatches(
148 r#"
149 fn test(x: &i32) {
150 if let 1..76 = 2u32 {}
151 if let 1..=76 = 2u32 {}
152 }
153 "#,
154 expect![[r#"
155 8..9 'x': &i32
156 17..75 '{ ...2 {} }': ()
157 23..45 'if let...u32 {}': ()
158 30..35 '1..76': u32
159 38..42 '2u32': u32
160 43..45 '{}': ()
161 50..73 'if let...u32 {}': ()
162 57..63 '1..=76': u32
163 66..70 '2u32': u32
164 71..73 '{}': ()
165 "#]],
166 );
167}
168
169#[test]
170fn infer_pattern_match_ergonomics() {
171 check_infer(
172 r#"
173 struct A<T>(T);
174
175 fn test() {
176 let A(n) = &A(1);
177 let A(n) = &mut A(1);
178 }
179 "#,
180 expect![[r#"
181 27..78 '{ ...(1); }': ()
182 37..41 'A(n)': A<i32>
183 39..40 'n': &i32
184 44..49 '&A(1)': &A<i32>
185 45..46 'A': A<i32>(i32) -> A<i32>
186 45..49 'A(1)': A<i32>
187 47..48 '1': i32
188 59..63 'A(n)': A<i32>
189 61..62 'n': &mut i32
190 66..75 '&mut A(1)': &mut A<i32>
191 71..72 'A': A<i32>(i32) -> A<i32>
192 71..75 'A(1)': A<i32>
193 73..74 '1': i32
194 "#]],
195 );
196}
197
198#[test]
199fn infer_pattern_match_ergonomics_ref() {
200 mark::check!(match_ergonomics_ref);
201 check_infer(
202 r#"
203 fn test() {
204 let v = &(1, &2);
205 let (_, &w) = v;
206 }
207 "#,
208 expect![[r#"
209 10..56 '{ ...= v; }': ()
210 20..21 'v': &(i32, &i32)
211 24..32 '&(1, &2)': &(i32, &i32)
212 25..32 '(1, &2)': (i32, &i32)
213 26..27 '1': i32
214 29..31 '&2': &i32
215 30..31 '2': i32
216 42..49 '(_, &w)': (i32, &i32)
217 43..44 '_': i32
218 46..48 '&w': &i32
219 47..48 'w': i32
220 52..53 'v': &(i32, &i32)
221 "#]],
222 );
223}
224
225#[test]
226fn infer_pattern_match_slice() {
227 check_infer(
228 r#"
229 fn test() {
230 let slice: &[f64] = &[0.0];
231 match slice {
232 &[] => {},
233 &[a] => {
234 a;
235 },
236 &[b, c] => {
237 b;
238 c;
239 }
240 _ => {}
241 }
242 }
243 "#,
244 expect![[r#"
245 10..209 '{ ... } }': ()
246 20..25 'slice': &[f64]
247 36..42 '&[0.0]': &[f64; _]
248 37..42 '[0.0]': [f64; _]
249 38..41 '0.0': f64
250 48..207 'match ... }': ()
251 54..59 'slice': &[f64]
252 70..73 '&[]': &[f64]
253 71..73 '[]': [f64]
254 77..79 '{}': ()
255 89..93 '&[a]': &[f64]
256 90..93 '[a]': [f64]
257 91..92 'a': f64
258 97..123 '{ ... }': ()
259 111..112 'a': f64
260 133..140 '&[b, c]': &[f64]
261 134..140 '[b, c]': [f64]
262 135..136 'b': f64
263 138..139 'c': f64
264 144..185 '{ ... }': ()
265 158..159 'b': f64
266 173..174 'c': f64
267 194..195 '_': &[f64]
268 199..201 '{}': ()
269 "#]],
270 );
271}
272
273#[test]
274fn infer_pattern_match_string_literal() {
275 check_infer_with_mismatches(
276 r#"
277 fn test() {
278 let s: &str = "hello";
279 match s {
280 "hello" => {}
281 _ => {}
282 }
283 }
284 "#,
285 expect![[r#"
286 10..98 '{ ... } }': ()
287 20..21 's': &str
288 30..37 '"hello"': &str
289 43..96 'match ... }': ()
290 49..50 's': &str
291 61..68 '"hello"': &str
292 61..68 '"hello"': &str
293 72..74 '{}': ()
294 83..84 '_': &str
295 88..90 '{}': ()
296 "#]],
297 );
298}
299
300#[test]
301fn infer_pattern_match_or() {
302 check_infer_with_mismatches(
303 r#"
304 fn test() {
305 let s: &str = "hello";
306 match s {
307 "hello" | "world" => {}
308 _ => {}
309 }
310 }
311 "#,
312 expect![[r#"
313 10..108 '{ ... } }': ()
314 20..21 's': &str
315 30..37 '"hello"': &str
316 43..106 'match ... }': ()
317 49..50 's': &str
318 61..68 '"hello"': &str
319 61..68 '"hello"': &str
320 61..78 '"hello...world"': &str
321 71..78 '"world"': &str
322 71..78 '"world"': &str
323 82..84 '{}': ()
324 93..94 '_': &str
325 98..100 '{}': ()
326 "#]],
327 );
328}
329
330#[test]
331fn infer_pattern_match_arr() {
332 check_infer(
333 r#"
334 fn test() {
335 let arr: [f64; 2] = [0.0, 1.0];
336 match arr {
337 [1.0, a] => {
338 a;
339 },
340 [b, c] => {
341 b;
342 c;
343 }
344 }
345 }
346 "#,
347 expect![[r#"
348 10..179 '{ ... } }': ()
349 20..23 'arr': [f64; _]
350 36..46 '[0.0, 1.0]': [f64; _]
351 37..40 '0.0': f64
352 42..45 '1.0': f64
353 52..177 'match ... }': ()
354 58..61 'arr': [f64; _]
355 72..80 '[1.0, a]': [f64; _]
356 73..76 '1.0': f64
357 73..76 '1.0': f64
358 78..79 'a': f64
359 84..110 '{ ... }': ()
360 98..99 'a': f64
361 120..126 '[b, c]': [f64; _]
362 121..122 'b': f64
363 124..125 'c': f64
364 130..171 '{ ... }': ()
365 144..145 'b': f64
366 159..160 'c': f64
367 "#]],
368 );
369}
370
371#[test]
372fn infer_adt_pattern() {
373 check_infer(
374 r#"
375 enum E {
376 A { x: usize },
377 B
378 }
379
380 struct S(u32, E);
381
382 fn test() {
383 let e = E::A { x: 3 };
384
385 let S(y, z) = foo;
386 let E::A { x: new_var } = e;
387
388 match e {
389 E::A { x } => x,
390 E::B if foo => 1,
391 E::B => 10,
392 };
393
394 let ref d @ E::A { .. } = e;
395 d;
396 }
397 "#,
398 expect![[r#"
399 67..288 '{ ... d; }': ()
400 77..78 'e': E
401 81..94 'E::A { x: 3 }': E
402 91..92 '3': usize
403 105..112 'S(y, z)': S
404 107..108 'y': u32
405 110..111 'z': E
406 115..118 'foo': S
407 128..147 'E::A {..._var }': E
408 138..145 'new_var': usize
409 150..151 'e': E
410 158..244 'match ... }': usize
411 164..165 'e': E
412 176..186 'E::A { x }': E
413 183..184 'x': usize
414 190..191 'x': usize
415 201..205 'E::B': E
416 209..212 'foo': bool
417 216..217 '1': usize
418 227..231 'E::B': E
419 235..237 '10': usize
420 255..274 'ref d ...{ .. }': &E
421 263..274 'E::A { .. }': E
422 277..278 'e': E
423 284..285 'd': &E
424 "#]],
425 );
426}
427
428#[test]
429fn enum_variant_through_self_in_pattern() {
430 check_infer(
431 r#"
432 enum E {
433 A { x: usize },
434 B(usize),
435 C
436 }
437
438 impl E {
439 fn test() {
440 match (loop {}) {
441 Self::A { x } => { x; },
442 Self::B(x) => { x; },
443 Self::C => {},
444 };
445 }
446 }
447 "#,
448 expect![[r#"
449 75..217 '{ ... }': ()
450 85..210 'match ... }': ()
451 92..99 'loop {}': !
452 97..99 '{}': ()
453 115..128 'Self::A { x }': E
454 125..126 'x': usize
455 132..138 '{ x; }': ()
456 134..135 'x': usize
457 152..162 'Self::B(x)': E
458 160..161 'x': usize
459 166..172 '{ x; }': ()
460 168..169 'x': usize
461 186..193 'Self::C': E
462 197..199 '{}': ()
463 "#]],
464 );
465}
466
467#[test]
468fn infer_generics_in_patterns() {
469 check_infer(
470 r#"
471 struct A<T> {
472 x: T,
473 }
474
475 enum Option<T> {
476 Some(T),
477 None,
478 }
479
480 fn test(a1: A<u32>, o: Option<u64>) {
481 let A { x: x2 } = a1;
482 let A::<i64> { x: x3 } = A { x: 1 };
483 match o {
484 Option::Some(t) => t,
485 _ => 1,
486 };
487 }
488 "#,
489 expect![[r#"
490 78..80 'a1': A<u32>
491 90..91 'o': Option<u64>
492 106..243 '{ ... }; }': ()
493 116..127 'A { x: x2 }': A<u32>
494 123..125 'x2': u32
495 130..132 'a1': A<u32>
496 142..160 'A::<i6...: x3 }': A<i64>
497 156..158 'x3': i64
498 163..173 'A { x: 1 }': A<i64>
499 170..171 '1': i64
500 179..240 'match ... }': u64
501 185..186 'o': Option<u64>
502 197..212 'Option::Some(t)': Option<u64>
503 210..211 't': u64
504 216..217 't': u64
505 227..228 '_': Option<u64>
506 232..233 '1': u64
507 "#]],
508 );
509}
510
511#[test]
512fn infer_const_pattern() {
513 check_infer_with_mismatches(
514 r#"
515 enum Option<T> { None }
516 use Option::None;
517 struct Foo;
518 const Bar: usize = 1;
519
520 fn test() {
521 let a: Option<u32> = None;
522 let b: Option<i64> = match a {
523 None => None,
524 };
525 let _: () = match () { Foo => Foo }; // Expected mismatch
526 let _: () = match () { Bar => Bar }; // Expected mismatch
527 }
528 "#,
529 expect![[r#"
530 73..74 '1': usize
531 87..309 '{ ...atch }': ()
532 97..98 'a': Option<u32>
533 114..118 'None': Option<u32>
534 128..129 'b': Option<i64>
535 145..182 'match ... }': Option<i64>
536 151..152 'a': Option<u32>
537 163..167 'None': Option<u32>
538 171..175 'None': Option<i64>
539 192..193 '_': ()
540 200..223 'match ... Foo }': Foo
541 206..208 '()': ()
542 211..214 'Foo': Foo
543 218..221 'Foo': Foo
544 254..255 '_': ()
545 262..285 'match ... Bar }': usize
546 268..270 '()': ()
547 273..276 'Bar': usize
548 280..283 'Bar': usize
549 200..223: expected (), got Foo
550 262..285: expected (), got usize
551 "#]],
552 );
553}
554
555#[test]
556fn infer_guard() {
557 check_infer(
558 r#"
559struct S;
560impl S { fn foo(&self) -> bool { false } }
561
562fn main() {
563 match S {
564 s if s.foo() => (),
565 }
566}
567 "#,
568 expect![[r#"
569 27..31 'self': &S
570 41..50 '{ false }': bool
571 43..48 'false': bool
572 64..115 '{ ... } }': ()
573 70..113 'match ... }': ()
574 76..77 'S': S
575 88..89 's': S
576 93..94 's': S
577 93..100 's.foo()': bool
578 104..106 '()': ()
579 "#]],
580 )
581}
582
583#[test]
584fn match_ergonomics_in_closure_params() {
585 check_infer(
586 r#"
587 #[lang = "fn_once"]
588 trait FnOnce<Args> {
589 type Output;
590 }
591
592 fn foo<T, U, F: FnOnce(T) -> U>(t: T, f: F) -> U { loop {} }
593
594 fn test() {
595 foo(&(1, "a"), |&(x, y)| x); // normal, no match ergonomics
596 foo(&(1, "a"), |(x, y)| x);
597 }
598 "#,
599 expect![[r#"
600 93..94 't': T
601 99..100 'f': F
602 110..121 '{ loop {} }': U
603 112..119 'loop {}': !
604 117..119 '{}': ()
605 133..232 '{ ... x); }': ()
606 139..142 'foo': fn foo<&(i32, &str), i32, |&(i32, &str)| -> i32>(&(i32, &str), |&(i32, &str)| -> i32) -> i32
607 139..166 'foo(&(...y)| x)': i32
608 143..152 '&(1, "a")': &(i32, &str)
609 144..152 '(1, "a")': (i32, &str)
610 145..146 '1': i32
611 148..151 '"a"': &str
612 154..165 '|&(x, y)| x': |&(i32, &str)| -> i32
613 155..162 '&(x, y)': &(i32, &str)
614 156..162 '(x, y)': (i32, &str)
615 157..158 'x': i32
616 160..161 'y': &str
617 164..165 'x': i32
618 203..206 'foo': fn foo<&(i32, &str), &i32, |&(i32, &str)| -> &i32>(&(i32, &str), |&(i32, &str)| -> &i32) -> &i32
619 203..229 'foo(&(...y)| x)': &i32
620 207..216 '&(1, "a")': &(i32, &str)
621 208..216 '(1, "a")': (i32, &str)
622 209..210 '1': i32
623 212..215 '"a"': &str
624 218..228 '|(x, y)| x': |&(i32, &str)| -> &i32
625 219..225 '(x, y)': (i32, &str)
626 220..221 'x': &i32
627 223..224 'y': &&str
628 227..228 'x': &i32
629 "#]],
630 );
631}
632
633#[test]
634fn slice_tail_pattern() {
635 check_infer(
636 r#"
637 fn foo(params: &[i32]) {
638 match params {
639 [head, tail @ ..] => {
640 }
641 }
642 }
643 "#,
644 expect![[r#"
645 7..13 'params': &[i32]
646 23..92 '{ ... } }': ()
647 29..90 'match ... }': ()
648 35..41 'params': &[i32]
649 52..69 '[head,... @ ..]': [i32]
650 53..57 'head': &i32
651 59..68 'tail @ ..': &[i32]
652 66..68 '..': [i32]
653 73..84 '{ }': ()
654 "#]],
655 );
656}
diff --git a/crates/ra_hir_ty/src/tests/regression.rs b/crates/ra_hir_ty/src/tests/regression.rs
deleted file mode 100644
index b9ab0f357..000000000
--- a/crates/ra_hir_ty/src/tests/regression.rs
+++ /dev/null
@@ -1,842 +0,0 @@
1use expect::expect;
2use test_utils::mark;
3
4use super::{check_infer, check_types};
5
6#[test]
7fn bug_484() {
8 check_infer(
9 r#"
10 fn test() {
11 let x = if true {};
12 }
13 "#,
14 expect![[r#"
15 10..37 '{ ... {}; }': ()
16 20..21 'x': ()
17 24..34 'if true {}': ()
18 27..31 'true': bool
19 32..34 '{}': ()
20 "#]],
21 );
22}
23
24#[test]
25fn no_panic_on_field_of_enum() {
26 check_infer(
27 r#"
28 enum X {}
29
30 fn test(x: X) {
31 x.some_field;
32 }
33 "#,
34 expect![[r#"
35 19..20 'x': X
36 25..46 '{ ...eld; }': ()
37 31..32 'x': X
38 31..43 'x.some_field': {unknown}
39 "#]],
40 );
41}
42
43#[test]
44fn bug_585() {
45 check_infer(
46 r#"
47 fn test() {
48 X {};
49 match x {
50 A::B {} => (),
51 A::Y() => (),
52 }
53 }
54 "#,
55 expect![[r#"
56 10..88 '{ ... } }': ()
57 16..20 'X {}': {unknown}
58 26..86 'match ... }': ()
59 32..33 'x': {unknown}
60 44..51 'A::B {}': {unknown}
61 55..57 '()': ()
62 67..73 'A::Y()': {unknown}
63 77..79 '()': ()
64 "#]],
65 );
66}
67
68#[test]
69fn bug_651() {
70 check_infer(
71 r#"
72 fn quux() {
73 let y = 92;
74 1 + y;
75 }
76 "#,
77 expect![[r#"
78 10..40 '{ ...+ y; }': ()
79 20..21 'y': i32
80 24..26 '92': i32
81 32..33 '1': i32
82 32..37 '1 + y': i32
83 36..37 'y': i32
84 "#]],
85 );
86}
87
88#[test]
89fn recursive_vars() {
90 mark::check!(type_var_cycles_resolve_completely);
91 mark::check!(type_var_cycles_resolve_as_possible);
92 check_infer(
93 r#"
94 fn test() {
95 let y = unknown;
96 [y, &y];
97 }
98 "#,
99 expect![[r#"
100 10..47 '{ ...&y]; }': ()
101 20..21 'y': &{unknown}
102 24..31 'unknown': &{unknown}
103 37..44 '[y, &y]': [&&{unknown}; _]
104 38..39 'y': &{unknown}
105 41..43 '&y': &&{unknown}
106 42..43 'y': &{unknown}
107 "#]],
108 );
109}
110
111#[test]
112fn recursive_vars_2() {
113 check_infer(
114 r#"
115 fn test() {
116 let x = unknown;
117 let y = unknown;
118 [(x, y), (&y, &x)];
119 }
120 "#,
121 expect![[r#"
122 10..79 '{ ...x)]; }': ()
123 20..21 'x': &&{unknown}
124 24..31 'unknown': &&{unknown}
125 41..42 'y': &&{unknown}
126 45..52 'unknown': &&{unknown}
127 58..76 '[(x, y..., &x)]': [(&&&{unknown}, &&&{unknown}); _]
128 59..65 '(x, y)': (&&&{unknown}, &&&{unknown})
129 60..61 'x': &&{unknown}
130 63..64 'y': &&{unknown}
131 67..75 '(&y, &x)': (&&&{unknown}, &&&{unknown})
132 68..70 '&y': &&&{unknown}
133 69..70 'y': &&{unknown}
134 72..74 '&x': &&&{unknown}
135 73..74 'x': &&{unknown}
136 "#]],
137 );
138}
139
140#[test]
141fn infer_std_crash_1() {
142 // caused stack overflow, taken from std
143 check_infer(
144 r#"
145 enum Maybe<T> {
146 Real(T),
147 Fake,
148 }
149
150 fn write() {
151 match something_unknown {
152 Maybe::Real(ref mut something) => (),
153 }
154 }
155 "#,
156 expect![[r#"
157 53..138 '{ ... } }': ()
158 59..136 'match ... }': ()
159 65..82 'someth...nknown': Maybe<{unknown}>
160 93..123 'Maybe:...thing)': Maybe<{unknown}>
161 105..122 'ref mu...ething': &mut {unknown}
162 127..129 '()': ()
163 "#]],
164 );
165}
166
167#[test]
168fn infer_std_crash_2() {
169 mark::check!(type_var_resolves_to_int_var);
170 // caused "equating two type variables, ...", taken from std
171 check_infer(
172 r#"
173 fn test_line_buffer() {
174 &[0, b'\n', 1, b'\n'];
175 }
176 "#,
177 expect![[r#"
178 22..52 '{ ...n']; }': ()
179 28..49 '&[0, b...b'\n']': &[u8; _]
180 29..49 '[0, b'...b'\n']': [u8; _]
181 30..31 '0': u8
182 33..38 'b'\n'': u8
183 40..41 '1': u8
184 43..48 'b'\n'': u8
185 "#]],
186 );
187}
188
189#[test]
190fn infer_std_crash_3() {
191 // taken from rustc
192 check_infer(
193 r#"
194 pub fn compute() {
195 match nope!() {
196 SizeSkeleton::Pointer { non_zero: true, tail } => {}
197 }
198 }
199 "#,
200 expect![[r#"
201 17..107 '{ ... } }': ()
202 23..105 'match ... }': ()
203 29..36 'nope!()': {unknown}
204 47..93 'SizeSk...tail }': {unknown}
205 81..85 'true': bool
206 81..85 'true': bool
207 87..91 'tail': {unknown}
208 97..99 '{}': ()
209 "#]],
210 );
211}
212
213#[test]
214fn infer_std_crash_4() {
215 // taken from rustc
216 check_infer(
217 r#"
218 pub fn primitive_type() {
219 match *self {
220 BorrowedRef { type_: Primitive(p), ..} => {},
221 }
222 }
223 "#,
224 expect![[r#"
225 24..105 '{ ... } }': ()
226 30..103 'match ... }': ()
227 36..41 '*self': {unknown}
228 37..41 'self': {unknown}
229 52..90 'Borrow...), ..}': {unknown}
230 73..85 'Primitive(p)': {unknown}
231 83..84 'p': {unknown}
232 94..96 '{}': ()
233 "#]],
234 );
235}
236
237#[test]
238fn infer_std_crash_5() {
239 // taken from rustc
240 check_infer(
241 r#"
242 fn extra_compiler_flags() {
243 for content in doesnt_matter {
244 let name = if doesnt_matter {
245 first
246 } else {
247 &content
248 };
249
250 let content = if ICE_REPORT_COMPILER_FLAGS_STRIP_VALUE.contains(&name) {
251 name
252 } else {
253 content
254 };
255 }
256 }
257 "#,
258 expect![[r#"
259 26..322 '{ ... } }': ()
260 32..320 'for co... }': ()
261 36..43 'content': &{unknown}
262 47..60 'doesnt_matter': {unknown}
263 61..320 '{ ... }': ()
264 75..79 'name': &&{unknown}
265 82..166 'if doe... }': &&{unknown}
266 85..98 'doesnt_matter': bool
267 99..128 '{ ... }': &&{unknown}
268 113..118 'first': &&{unknown}
269 134..166 '{ ... }': &&{unknown}
270 148..156 '&content': &&{unknown}
271 149..156 'content': &{unknown}
272 181..188 'content': &{unknown}
273 191..313 'if ICE... }': &{unknown}
274 194..231 'ICE_RE..._VALUE': {unknown}
275 194..247 'ICE_RE...&name)': bool
276 241..246 '&name': &&&{unknown}
277 242..246 'name': &&{unknown}
278 248..276 '{ ... }': &&{unknown}
279 262..266 'name': &&{unknown}
280 282..313 '{ ... }': &{unknown}
281 296..303 'content': &{unknown}
282 "#]],
283 );
284}
285
286#[test]
287fn infer_nested_generics_crash() {
288 // another crash found typechecking rustc
289 check_infer(
290 r#"
291 struct Canonical<V> {
292 value: V,
293 }
294 struct QueryResponse<V> {
295 value: V,
296 }
297 fn test<R>(query_response: Canonical<QueryResponse<R>>) {
298 &query_response.value;
299 }
300 "#,
301 expect![[r#"
302 91..105 'query_response': Canonical<QueryResponse<R>>
303 136..166 '{ ...lue; }': ()
304 142..163 '&query....value': &QueryResponse<R>
305 143..157 'query_response': Canonical<QueryResponse<R>>
306 143..163 'query_....value': QueryResponse<R>
307 "#]],
308 );
309}
310
311#[test]
312fn infer_paren_macro_call() {
313 check_infer(
314 r#"
315 macro_rules! bar { () => {0u32} }
316 fn test() {
317 let a = (bar!());
318 }
319 "#,
320 expect![[r#"
321 !0..4 '0u32': u32
322 44..69 '{ ...()); }': ()
323 54..55 'a': u32
324 "#]],
325 );
326}
327
328#[test]
329fn bug_1030() {
330 check_infer(
331 r#"
332 struct HashSet<T, H>;
333 struct FxHasher;
334 type FxHashSet<T> = HashSet<T, FxHasher>;
335
336 impl<T, H> HashSet<T, H> {
337 fn default() -> HashSet<T, H> {}
338 }
339
340 pub fn main_loop() {
341 FxHashSet::default();
342 }
343 "#,
344 expect![[r#"
345 143..145 '{}': ()
346 168..197 '{ ...t(); }': ()
347 174..192 'FxHash...efault': fn default<{unknown}, FxHasher>() -> HashSet<{unknown}, FxHasher>
348 174..194 'FxHash...ault()': HashSet<{unknown}, FxHasher>
349 "#]],
350 );
351}
352
353#[test]
354fn issue_2669() {
355 check_infer(
356 r#"
357 trait A {}
358 trait Write {}
359 struct Response<T> {}
360
361 trait D {
362 fn foo();
363 }
364
365 impl<T:A> D for Response<T> {
366 fn foo() {
367 end();
368 fn end<W: Write>() {
369 let _x: T = loop {};
370 }
371 }
372 }
373 "#,
374 expect![[r#"
375 119..214 '{ ... }': ()
376 129..132 'end': fn end<{unknown}>()
377 129..134 'end()': ()
378 163..208 '{ ... }': ()
379 181..183 '_x': !
380 190..197 'loop {}': !
381 195..197 '{}': ()
382 "#]],
383 )
384}
385
386#[test]
387fn issue_2705() {
388 check_infer(
389 r#"
390 trait Trait {}
391 fn test() {
392 <Trait<u32>>::foo()
393 }
394 "#,
395 expect![[r#"
396 25..52 '{ ...oo() }': ()
397 31..48 '<Trait...>::foo': {unknown}
398 31..50 '<Trait...:foo()': ()
399 "#]],
400 );
401}
402
403#[test]
404fn issue_2683_chars_impl() {
405 check_types(
406 r#"
407//- /main.rs crate:main deps:std
408fn test() {
409 let chars: std::str::Chars<'_>;
410 (chars.next(), chars.nth(1));
411} //^ (Option<char>, Option<char>)
412
413//- /std.rs crate:std
414#[prelude_import]
415use prelude::*;
416
417pub mod prelude {
418 pub use crate::iter::Iterator;
419 pub use crate::option::Option;
420}
421
422pub mod iter {
423 pub use self::traits::Iterator;
424 pub mod traits {
425 pub use self::iterator::Iterator;
426
427 pub mod iterator {
428 pub trait Iterator {
429 type Item;
430 fn next(&mut self) -> Option<Self::Item>;
431 fn nth(&mut self, n: usize) -> Option<Self::Item> {}
432 }
433 }
434 }
435}
436
437pub mod option {
438 pub enum Option<T> {}
439}
440
441pub mod str {
442 pub struct Chars<'a> {}
443 impl<'a> Iterator for Chars<'a> {
444 type Item = char;
445 fn next(&mut self) -> Option<char> {}
446 }
447}
448"#,
449 );
450}
451
452#[test]
453fn issue_3642_bad_macro_stackover() {
454 check_types(
455 r#"
456#[macro_export]
457macro_rules! match_ast {
458 (match $node:ident { $($tt:tt)* }) => { match_ast!(match ($node) { $($tt)* }) };
459
460 (match ($node:expr) {
461 $( ast::$ast:ident($it:ident) => $res:expr, )*
462 _ => $catch_all:expr $(,)?
463 }) => {{
464 $( if let Some($it) = ast::$ast::cast($node.clone()) { $res } else )*
465 { $catch_all }
466 }};
467}
468
469fn main() {
470 let anchor = match_ast! {
471 //^ ()
472 match parent {
473 as => {},
474 _ => return None
475 }
476 };
477}"#,
478 );
479}
480
481#[test]
482fn issue_3999_slice() {
483 check_infer(
484 r#"
485 fn foo(params: &[usize]) {
486 match params {
487 [ps @ .., _] => {}
488 }
489 }
490 "#,
491 expect![[r#"
492 7..13 'params': &[usize]
493 25..80 '{ ... } }': ()
494 31..78 'match ... }': ()
495 37..43 'params': &[usize]
496 54..66 '[ps @ .., _]': [usize]
497 55..62 'ps @ ..': &[usize]
498 60..62 '..': [usize]
499 64..65 '_': usize
500 70..72 '{}': ()
501 "#]],
502 );
503}
504
505#[test]
506fn issue_3999_struct() {
507 // rust-analyzer should not panic on seeing this malformed
508 // record pattern.
509 check_infer(
510 r#"
511 struct Bar {
512 a: bool,
513 }
514 fn foo(b: Bar) {
515 match b {
516 Bar { a: .. } => {},
517 }
518 }
519 "#,
520 expect![[r#"
521 35..36 'b': Bar
522 43..95 '{ ... } }': ()
523 49..93 'match ... }': ()
524 55..56 'b': Bar
525 67..80 'Bar { a: .. }': Bar
526 76..78 '..': bool
527 84..86 '{}': ()
528 "#]],
529 );
530}
531
532#[test]
533fn issue_4235_name_conflicts() {
534 check_infer(
535 r#"
536 struct FOO {}
537 static FOO:FOO = FOO {};
538
539 impl FOO {
540 fn foo(&self) {}
541 }
542
543 fn main() {
544 let a = &FOO;
545 a.foo();
546 }
547 "#,
548 expect![[r#"
549 31..37 'FOO {}': FOO
550 63..67 'self': &FOO
551 69..71 '{}': ()
552 85..119 '{ ...o(); }': ()
553 95..96 'a': &FOO
554 99..103 '&FOO': &FOO
555 100..103 'FOO': FOO
556 109..110 'a': &FOO
557 109..116 'a.foo()': ()
558 "#]],
559 );
560}
561
562#[test]
563fn issue_4465_dollar_crate_at_type() {
564 check_infer(
565 r#"
566 pub struct Foo {}
567 pub fn anything<T>() -> T {
568 loop {}
569 }
570 macro_rules! foo {
571 () => {{
572 let r: $crate::Foo = anything();
573 r
574 }};
575 }
576 fn main() {
577 let _a = foo!();
578 }
579 "#,
580 expect![[r#"
581 44..59 '{ loop {} }': T
582 50..57 'loop {}': !
583 55..57 '{}': ()
584 !0..31 '{letr:...g();r}': Foo
585 !4..5 'r': Foo
586 !18..26 'anything': fn anything<Foo>() -> Foo
587 !18..28 'anything()': Foo
588 !29..30 'r': Foo
589 163..187 '{ ...!(); }': ()
590 173..175 '_a': Foo
591 "#]],
592 );
593}
594
595#[test]
596fn issue_4053_diesel_where_clauses() {
597 check_infer(
598 r#"
599 trait BoxedDsl<DB> {
600 type Output;
601 fn internal_into_boxed(self) -> Self::Output;
602 }
603
604 struct SelectStatement<From, Select, Distinct, Where, Order, LimitOffset, GroupBy, Locking> {
605 order: Order,
606 }
607
608 trait QueryFragment<DB: Backend> {}
609
610 trait Into<T> { fn into(self) -> T; }
611
612 impl<F, S, D, W, O, LOf, DB> BoxedDsl<DB>
613 for SelectStatement<F, S, D, W, O, LOf, G>
614 where
615 O: Into<dyn QueryFragment<DB>>,
616 {
617 type Output = XXX;
618
619 fn internal_into_boxed(self) -> Self::Output {
620 self.order.into();
621 }
622 }
623 "#,
624 expect![[r#"
625 65..69 'self': Self
626 267..271 'self': Self
627 466..470 'self': SelectStatement<F, S, D, W, O, LOf, {unknown}, {unknown}>
628 488..522 '{ ... }': ()
629 498..502 'self': SelectStatement<F, S, D, W, O, LOf, {unknown}, {unknown}>
630 498..508 'self.order': O
631 498..515 'self.o...into()': dyn QueryFragment<DB>
632 "#]],
633 );
634}
635
636#[test]
637fn issue_4953() {
638 check_infer(
639 r#"
640 pub struct Foo(pub i64);
641 impl Foo {
642 fn test() -> Self { Self(0i64) }
643 }
644 "#,
645 expect![[r#"
646 58..72 '{ Self(0i64) }': Foo
647 60..64 'Self': Foo(i64) -> Foo
648 60..70 'Self(0i64)': Foo
649 65..69 '0i64': i64
650 "#]],
651 );
652 check_infer(
653 r#"
654 pub struct Foo<T>(pub T);
655 impl Foo<i64> {
656 fn test() -> Self { Self(0i64) }
657 }
658 "#,
659 expect![[r#"
660 64..78 '{ Self(0i64) }': Foo<i64>
661 66..70 'Self': Foo<i64>(i64) -> Foo<i64>
662 66..76 'Self(0i64)': Foo<i64>
663 71..75 '0i64': i64
664 "#]],
665 );
666}
667
668#[test]
669fn issue_4931() {
670 check_infer(
671 r#"
672 trait Div<T> {
673 type Output;
674 }
675
676 trait CheckedDiv: Div<()> {}
677
678 trait PrimInt: CheckedDiv<Output = ()> {
679 fn pow(self);
680 }
681
682 fn check<T: PrimInt>(i: T) {
683 i.pow();
684 }
685 "#,
686 expect![[r#"
687 117..121 'self': Self
688 148..149 'i': T
689 154..170 '{ ...w(); }': ()
690 160..161 'i': T
691 160..167 'i.pow()': ()
692 "#]],
693 );
694}
695
696#[test]
697fn issue_4885() {
698 check_infer(
699 r#"
700 #[lang = "coerce_unsized"]
701 pub trait CoerceUnsized<T> {}
702
703 trait Future {
704 type Output;
705 }
706 trait Foo<R> {
707 type Bar;
708 }
709 fn foo<R, K>(key: &K) -> impl Future<Output = K::Bar>
710 where
711 K: Foo<R>,
712 {
713 bar(key)
714 }
715 fn bar<R, K>(key: &K) -> impl Future<Output = K::Bar>
716 where
717 K: Foo<R>,
718 {
719 }
720 "#,
721 expect![[r#"
722 136..139 'key': &K
723 198..214 '{ ...key) }': impl Future<Output = <K as Foo<R>>::Bar>
724 204..207 'bar': fn bar<R, K>(&K) -> impl Future<Output = <K as Foo<R>>::Bar>
725 204..212 'bar(key)': impl Future<Output = <K as Foo<R>>::Bar>
726 208..211 'key': &K
727 228..231 'key': &K
728 290..293 '{ }': ()
729 "#]],
730 );
731}
732
733#[test]
734fn issue_4800() {
735 check_infer(
736 r#"
737 trait Debug {}
738
739 struct Foo<T>;
740
741 type E1<T> = (T, T, T);
742 type E2<T> = E1<E1<E1<(T, T, T)>>>;
743
744 impl Debug for Foo<E2<()>> {}
745
746 struct Request;
747
748 pub trait Future {
749 type Output;
750 }
751
752 pub struct PeerSet<D>;
753
754 impl<D> Service<Request> for PeerSet<D>
755 where
756 D: Discover,
757 D::Key: Debug,
758 {
759 type Error = ();
760 type Future = dyn Future<Output = Self::Error>;
761
762 fn call(&mut self) -> Self::Future {
763 loop {}
764 }
765 }
766
767 pub trait Discover {
768 type Key;
769 }
770
771 pub trait Service<Request> {
772 type Error;
773 type Future: Future<Output = Self::Error>;
774 fn call(&mut self) -> Self::Future;
775 }
776 "#,
777 expect![[r#"
778 379..383 'self': &mut PeerSet<D>
779 401..424 '{ ... }': dyn Future<Output = ()>
780 411..418 'loop {}': !
781 416..418 '{}': ()
782 575..579 'self': &mut Self
783 "#]],
784 );
785}
786
787#[test]
788fn issue_4966() {
789 check_infer(
790 r#"
791 pub trait IntoIterator {
792 type Item;
793 }
794
795 struct Repeat<A> { element: A }
796
797 struct Map<F> { f: F }
798
799 struct Vec<T> {}
800
801 #[lang = "deref"]
802 pub trait Deref {
803 type Target;
804 }
805
806 impl<T> Deref for Vec<T> {
807 type Target = [T];
808 }
809
810 fn from_iter<A, T: IntoIterator<Item = A>>(iter: T) -> Vec<A> {}
811
812 fn main() {
813 let inner = Map { f: |_: &f64| 0.0 };
814
815 let repeat = Repeat { element: inner };
816
817 let vec = from_iter(repeat);
818
819 vec.foo_bar();
820 }
821 "#,
822 expect![[r#"
823 270..274 'iter': T
824 289..291 '{}': ()
825 303..447 '{ ...r(); }': ()
826 313..318 'inner': Map<|&f64| -> f64>
827 321..345 'Map { ... 0.0 }': Map<|&f64| -> f64>
828 330..343 '|_: &f64| 0.0': |&f64| -> f64
829 331..332 '_': &f64
830 340..343 '0.0': f64
831 356..362 'repeat': Repeat<Map<|&f64| -> f64>>
832 365..390 'Repeat...nner }': Repeat<Map<|&f64| -> f64>>
833 383..388 'inner': Map<|&f64| -> f64>
834 401..404 'vec': Vec<IntoIterator::Item<Repeat<Map<|&f64| -> f64>>>>
835 407..416 'from_iter': fn from_iter<IntoIterator::Item<Repeat<Map<|&f64| -> f64>>>, Repeat<Map<|&f64| -> f64>>>(Repeat<Map<|&f64| -> f64>>) -> Vec<IntoIterator::Item<Repeat<Map<|&f64| -> f64>>>>
836 407..424 'from_i...epeat)': Vec<IntoIterator::Item<Repeat<Map<|&f64| -> f64>>>>
837 417..423 'repeat': Repeat<Map<|&f64| -> f64>>
838 431..434 'vec': Vec<IntoIterator::Item<Repeat<Map<|&f64| -> f64>>>>
839 431..444 'vec.foo_bar()': {unknown}
840 "#]],
841 );
842}
diff --git a/crates/ra_hir_ty/src/tests/simple.rs b/crates/ra_hir_ty/src/tests/simple.rs
deleted file mode 100644
index 3fd7d5cd4..000000000
--- a/crates/ra_hir_ty/src/tests/simple.rs
+++ /dev/null
@@ -1,2190 +0,0 @@
1use expect::expect;
2
3use super::{check_infer, check_types};
4
5#[test]
6fn infer_box() {
7 check_types(
8 r#"
9//- /main.rs crate:main deps:std
10fn test() {
11 let x = box 1;
12 let t = (x, box x, box &1, box [1]);
13 t;
14} //^ (Box<i32>, Box<Box<i32>>, Box<&i32>, Box<[i32; _]>)
15
16//- /std.rs crate:std
17#[prelude_import] use prelude::*;
18mod prelude {}
19
20mod boxed {
21 #[lang = "owned_box"]
22 pub struct Box<T: ?Sized> {
23 inner: *mut T,
24 }
25}
26"#,
27 );
28}
29
30#[test]
31fn infer_adt_self() {
32 check_types(
33 r#"
34enum Nat { Succ(Self), Demo(Nat), Zero }
35
36fn test() {
37 let foo: Nat = Nat::Zero;
38 if let Nat::Succ(x) = foo {
39 x
40 } //^ Nat
41}
42"#,
43 );
44}
45
46#[test]
47fn self_in_struct_lit() {
48 check_infer(
49 r#"
50 //- /main.rs
51 struct S<T> { x: T }
52
53 impl S<u32> {
54 fn foo() {
55 Self { x: 1 };
56 }
57 }
58 "#,
59 expect![[r#"
60 49..79 '{ ... }': ()
61 59..72 'Self { x: 1 }': S<u32>
62 69..70 '1': u32
63 "#]],
64 );
65}
66
67#[test]
68fn type_alias_in_struct_lit() {
69 check_infer(
70 r#"
71 //- /main.rs
72 struct S<T> { x: T }
73
74 type SS = S<u32>;
75
76 fn foo() {
77 SS { x: 1 };
78 }
79 "#,
80 expect![[r#"
81 50..70 '{ ...1 }; }': ()
82 56..67 'SS { x: 1 }': S<u32>
83 64..65 '1': u32
84 "#]],
85 );
86}
87
88#[test]
89fn infer_ranges() {
90 check_types(
91 r#"
92//- /main.rs crate:main deps:core
93fn test() {
94 let a = ..;
95 let b = 1..;
96 let c = ..2u32;
97 let d = 1..2usize;
98 let e = ..=10;
99 let f = 'a'..='z';
100
101 let t = (a, b, c, d, e, f);
102 t;
103} //^ (RangeFull, RangeFrom<i32>, RangeTo<u32>, Range<usize>, RangeToInclusive<i32>, RangeInclusive<char>)
104
105//- /core.rs crate:core
106#[prelude_import] use prelude::*;
107mod prelude {}
108
109pub mod ops {
110 pub struct Range<Idx> {
111 pub start: Idx,
112 pub end: Idx,
113 }
114 pub struct RangeFrom<Idx> {
115 pub start: Idx,
116 }
117 struct RangeFull;
118 pub struct RangeInclusive<Idx> {
119 start: Idx,
120 end: Idx,
121 is_empty: u8,
122 }
123 pub struct RangeTo<Idx> {
124 pub end: Idx,
125 }
126 pub struct RangeToInclusive<Idx> {
127 pub end: Idx,
128 }
129}
130"#,
131 );
132}
133
134#[test]
135fn infer_while_let() {
136 check_types(
137 r#"
138enum Option<T> { Some(T), None }
139
140fn test() {
141 let foo: Option<f32> = None;
142 while let Option::Some(x) = foo {
143 x
144 } //^ f32
145}
146"#,
147 );
148}
149
150#[test]
151fn infer_basics() {
152 check_infer(
153 r#"
154 fn test(a: u32, b: isize, c: !, d: &str) {
155 a;
156 b;
157 c;
158 d;
159 1usize;
160 1isize;
161 "test";
162 1.0f32;
163 }"#,
164 expect![[r#"
165 8..9 'a': u32
166 16..17 'b': isize
167 26..27 'c': !
168 32..33 'd': &str
169 41..120 '{ ...f32; }': ()
170 47..48 'a': u32
171 54..55 'b': isize
172 61..62 'c': !
173 68..69 'd': &str
174 75..81 '1usize': usize
175 87..93 '1isize': isize
176 99..105 '"test"': &str
177 111..117 '1.0f32': f32
178 "#]],
179 );
180}
181
182#[test]
183fn infer_let() {
184 check_infer(
185 r#"
186 fn test() {
187 let a = 1isize;
188 let b: usize = 1;
189 let c = b;
190 let d: u32;
191 let e;
192 let f: i32 = e;
193 }
194 "#,
195 expect![[r#"
196 10..117 '{ ...= e; }': ()
197 20..21 'a': isize
198 24..30 '1isize': isize
199 40..41 'b': usize
200 51..52 '1': usize
201 62..63 'c': usize
202 66..67 'b': usize
203 77..78 'd': u32
204 93..94 'e': i32
205 104..105 'f': i32
206 113..114 'e': i32
207 "#]],
208 );
209}
210
211#[test]
212fn infer_paths() {
213 check_infer(
214 r#"
215 fn a() -> u32 { 1 }
216
217 mod b {
218 fn c() -> u32 { 1 }
219 }
220
221 fn test() {
222 a();
223 b::c();
224 }
225 "#,
226 expect![[r#"
227 14..19 '{ 1 }': u32
228 16..17 '1': u32
229 47..52 '{ 1 }': u32
230 49..50 '1': u32
231 66..90 '{ ...c(); }': ()
232 72..73 'a': fn a() -> u32
233 72..75 'a()': u32
234 81..85 'b::c': fn c() -> u32
235 81..87 'b::c()': u32
236 "#]],
237 );
238}
239
240#[test]
241fn infer_path_type() {
242 check_infer(
243 r#"
244 struct S;
245
246 impl S {
247 fn foo() -> i32 { 1 }
248 }
249
250 fn test() {
251 S::foo();
252 <S>::foo();
253 }
254 "#,
255 expect![[r#"
256 40..45 '{ 1 }': i32
257 42..43 '1': i32
258 59..92 '{ ...o(); }': ()
259 65..71 'S::foo': fn foo() -> i32
260 65..73 'S::foo()': i32
261 79..87 '<S>::foo': fn foo() -> i32
262 79..89 '<S>::foo()': i32
263 "#]],
264 );
265}
266
267#[test]
268fn infer_struct() {
269 check_infer(
270 r#"
271 struct A {
272 b: B,
273 c: C,
274 }
275 struct B;
276 struct C(usize);
277
278 fn test() {
279 let c = C(1);
280 B;
281 let a: A = A { b: B, c: C(1) };
282 a.b;
283 a.c;
284 }
285 "#,
286 expect![[r#"
287 71..153 '{ ...a.c; }': ()
288 81..82 'c': C
289 85..86 'C': C(usize) -> C
290 85..89 'C(1)': C
291 87..88 '1': usize
292 95..96 'B': B
293 106..107 'a': A
294 113..132 'A { b:...C(1) }': A
295 120..121 'B': B
296 126..127 'C': C(usize) -> C
297 126..130 'C(1)': C
298 128..129 '1': usize
299 138..139 'a': A
300 138..141 'a.b': B
301 147..148 'a': A
302 147..150 'a.c': C
303 "#]],
304 );
305}
306
307#[test]
308fn infer_enum() {
309 check_infer(
310 r#"
311 enum E {
312 V1 { field: u32 },
313 V2
314 }
315 fn test() {
316 E::V1 { field: 1 };
317 E::V2;
318 }"#,
319 expect![[r#"
320 51..89 '{ ...:V2; }': ()
321 57..75 'E::V1 ...d: 1 }': E
322 72..73 '1': u32
323 81..86 'E::V2': E
324 "#]],
325 );
326}
327
328#[test]
329fn infer_union() {
330 check_infer(
331 r#"
332 union MyUnion {
333 foo: u32,
334 bar: f32,