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fuchsia / third_party / github.com / rust-lang / rust-analyzer / 4183bcdcdec5dc7a8fce7deae236c760033c70cc / . / crates / ide / src / hover / tests.rs
blob: f63499aa0fd4fd680e954da0c6776cb3cc4cc73b [file] [log] [blame]
use expect_test::{Expect, expect};
use ide_db::{FileRange, base_db::SourceDatabase};
use syntax::TextRange;
use crate::{
HoverConfig, HoverDocFormat, MemoryLayoutHoverConfig, MemoryLayoutHoverRenderKind, fixture,
};
const HOVER_BASE_CONFIG: HoverConfig = HoverConfig {
links_in_hover: false,
memory_layout: Some(MemoryLayoutHoverConfig {
size: Some(MemoryLayoutHoverRenderKind::Both),
offset: Some(MemoryLayoutHoverRenderKind::Both),
alignment: Some(MemoryLayoutHoverRenderKind::Both),
padding: Some(MemoryLayoutHoverRenderKind::Both),
niches: true,
}),
documentation: true,
format: HoverDocFormat::Markdown,
keywords: true,
max_trait_assoc_items_count: None,
max_fields_count: Some(5),
max_enum_variants_count: Some(5),
max_subst_ty_len: super::SubstTyLen::Unlimited,
show_drop_glue: true,
};
fn check_hover_no_result(#[rust_analyzer::rust_fixture] ra_fixture: &str) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig { links_in_hover: true, ..HOVER_BASE_CONFIG },
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap();
assert!(hover.is_none(), "hover not expected but found: {:?}", hover.unwrap());
}
#[track_caller]
fn check(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig { links_in_hover: true, ..HOVER_BASE_CONFIG },
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id);
let hovered_element = &content.text(&analysis.db)[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
#[track_caller]
fn check_hover_fields_limit(
fields_count: impl Into<Option<usize>>,
#[rust_analyzer::rust_fixture] ra_fixture: &str,
expect: Expect,
) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig {
links_in_hover: true,
max_fields_count: fields_count.into(),
..HOVER_BASE_CONFIG
},
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
#[track_caller]
fn check_hover_enum_variants_limit(
variants_count: impl Into<Option<usize>>,
#[rust_analyzer::rust_fixture] ra_fixture: &str,
expect: Expect,
) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig {
links_in_hover: true,
max_enum_variants_count: variants_count.into(),
..HOVER_BASE_CONFIG
},
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
#[track_caller]
fn check_assoc_count(
count: usize,
#[rust_analyzer::rust_fixture] ra_fixture: &str,
expect: Expect,
) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig {
links_in_hover: true,
max_trait_assoc_items_count: Some(count),
..HOVER_BASE_CONFIG
},
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
fn check_hover_no_links(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HOVER_BASE_CONFIG,
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
fn check_hover_no_memory_layout(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig { memory_layout: None, ..HOVER_BASE_CONFIG },
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
fn check_hover_no_markdown(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, position) = fixture::position(ra_fixture);
let hover = analysis
.hover(
&HoverConfig {
links_in_hover: true,
format: HoverDocFormat::PlainText,
..HOVER_BASE_CONFIG
},
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
let content = analysis.db.file_text(position.file_id).text(&analysis.db);
let hovered_element = &content[hover.range];
let actual = format!("*{hovered_element}*\n{}\n", hover.info.markup);
expect.assert_eq(&actual)
}
fn check_actions(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, file_id, position) = fixture::range_or_position(ra_fixture);
let mut hover = analysis
.hover(
&HoverConfig { links_in_hover: true, ..HOVER_BASE_CONFIG },
FileRange { file_id, range: position.range_or_empty() },
)
.unwrap()
.unwrap();
// stub out ranges into minicore as they can change every now and then
hover.info.actions.iter_mut().for_each(|action| match action {
super::HoverAction::GoToType(act) => act.iter_mut().for_each(|data| {
if data.nav.file_id == file_id {
return;
}
data.nav.full_range = TextRange::empty(span::TextSize::new(!0));
if let Some(range) = &mut data.nav.focus_range {
*range = TextRange::empty(span::TextSize::new(!0));
}
}),
_ => (),
});
expect.assert_debug_eq(&hover.info.actions)
}
fn check_hover_range(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, range) = fixture::range(ra_fixture);
let hover = analysis.hover(&HOVER_BASE_CONFIG, range).unwrap().unwrap();
expect.assert_eq(hover.info.markup.as_str())
}
fn check_hover_range_actions(#[rust_analyzer::rust_fixture] ra_fixture: &str, expect: Expect) {
let (analysis, range) = fixture::range(ra_fixture);
let mut hover = analysis
.hover(&HoverConfig { links_in_hover: true, ..HOVER_BASE_CONFIG }, range)
.unwrap()
.unwrap();
// stub out ranges into minicore as they can change every now and then
hover.info.actions.iter_mut().for_each(|action| match action {
super::HoverAction::GoToType(act) => act.iter_mut().for_each(|data| {
if data.nav.file_id == range.file_id {
return;
}
data.nav.full_range = TextRange::empty(span::TextSize::new(!0));
if let Some(range) = &mut data.nav.focus_range {
*range = TextRange::empty(span::TextSize::new(!0));
}
}),
_ => (),
});
expect.assert_debug_eq(&hover.info.actions);
}
fn check_hover_range_no_results(#[rust_analyzer::rust_fixture] ra_fixture: &str) {
let (analysis, range) = fixture::range(ra_fixture);
let hover = analysis.hover(&HOVER_BASE_CONFIG, range).unwrap();
assert!(hover.is_none());
}
#[test]
fn hover_descend_macros_avoids_duplicates() {
check(
r#"
macro_rules! dupe_use {
($local:ident) => {
{
$local;
$local;
}
}
}
fn foo() {
let local = 0;
dupe_use!(local$0);
}
"#,
expect![[r#"
*local*
```rust
let local: i32
```
"#]],
);
}
#[test]
fn hover_shows_all_macro_descends() {
check(
r#"
macro_rules! m {
($name:ident) => {
/// Outer
fn $name() {}
mod module {
/// Inner
fn $name() {}
}
};
}
m!(ab$0c);
"#,
expect![[r#"
*abc*
```rust
ra_test_fixture
```
```rust
fn abc()
```
---
Outer
---
```rust
ra_test_fixture::module
```
```rust
fn abc()
```
---
Inner
"#]],
);
}
#[test]
fn hover_remove_markdown_if_configured() {
check_hover_no_markdown(
r#"
pub fn foo() -> u32 { 1 }
fn main() {
let foo_test = foo$0();
}
"#,
expect![[r#"
*foo*
ra_test_fixture
pub fn foo() -> u32
"#]],
);
}
#[test]
fn hover_closure() {
check(
r#"
//- minicore: copy
fn main() {
let x = 2;
let y = $0|z| x + z;
}
"#,
expect![[r#"
*|*
```rust
impl Fn(i32) -> i32
```
___
size = 8, align = 8, niches = 1
## Captures
* `x` by immutable borrow
"#]],
);
check(
r#"
//- minicore: copy
fn foo(x: impl Fn(i32) -> i32) {
}
fn main() {
foo($0|x: i32| x)
}
"#,
expect![[r#"
*|*
```rust
impl Fn(i32) -> i32
```
___
size = 0, align = 1
## Captures
This closure captures nothing
"#]],
);
check(
r#"
//- minicore: copy
struct Z { f: i32 }
struct Y(&'static mut Z)
struct X {
f1: Y,
f2: (Y, Y),
}
fn main() {
let x: X;
let y = $0|| {
x.f1;
&mut x.f2.0 .0.f;
};
}
"#,
expect![[r#"
*|*
```rust
impl FnOnce()
```
___
size = 16 (0x10), align = 8, niches = 1
## Captures
* `x.f1` by move
* `(*x.f2.0.0).f` by mutable borrow
"#]],
);
check(
r#"
//- minicore: copy, option
fn do_char(c: char) {}
fn main() {
let x = None;
let y = |$0| {
match x {
Some(c) => do_char(c),
None => x = None,
}
};
}
"#,
expect![[r#"
*|*
```rust
impl FnMut()
```
___
size = 8, align = 8, niches = 1
## Captures
* `x` by mutable borrow
"#]],
);
}
#[test]
fn hover_ranged_closure() {
check_hover_range(
r#"
//- minicore: fn
struct S;
struct S2;
fn main() {
let x = &S;
let y = ($0|| {x; S2}$0).call();
}
"#,
expect![[r#"
```rust
impl FnOnce() -> S2
```
___
size = 8, align = 8, niches = 1
Coerced to: &impl FnOnce() -> S2
## Captures
* `x` by move"#]],
);
check_hover_range_actions(
r#"
//- minicore: fn
struct S;
struct S2;
fn main() {
let x = &S;
let y = ($0|| {x; S2}$0).call();
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::S2",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 10..20,
focus_range: 17..19,
name: "S2",
kind: Struct,
description: "struct S2",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..9,
focus_range: 7..8,
name: "S",
kind: Struct,
description: "struct S",
},
},
HoverGotoTypeData {
mod_path: "core::ops::function::FnOnce",
nav: NavigationTarget {
file_id: FileId(
1,
),
full_range: 4294967295..4294967295,
focus_range: 4294967295..4294967295,
name: "FnOnce",
kind: Trait,
container_name: "function",
description: "pub trait FnOnce<Args>\nwhere\n Args: Tuple,",
},
},
],
),
]
"#]],
);
}
#[test]
fn hover_shows_long_type_of_an_expression() {
check(
r#"
struct Scan<A, B, C> { a: A, b: B, c: C }
struct Iter<I> { inner: I }
enum Option<T> { Some(T), None }
struct OtherStruct<T> { i: T }
fn scan<A, B, C>(a: A, b: B, c: C) -> Iter<Scan<OtherStruct<A>, B, C>> {
Iter { inner: Scan { a, b, c } }
}
fn main() {
let num: i32 = 55;
let closure = |memo: &mut u32, value: &u32, _another: &mut u32| -> Option<u32> {
Option::Some(*memo + value)
};
let number = 5u32;
let mut iter$0 = scan(OtherStruct { i: num }, closure, number);
}
"#,
expect![[r#"
*iter*
```rust
let mut iter: Iter<Scan<OtherStruct<OtherStruct<i32>>, impl Fn(&mut u32, &u32, &mut u32) -> Option<u32>, u32>>
```
---
size = 8, align = 4, no Drop
"#]],
);
}
#[test]
fn hover_shows_fn_signature() {
// Single file with result
check(
r#"
pub fn foo() -> u32 { 1 }
fn main() { let foo_test = fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo() -> u32
```
"#]],
);
// Use literal `crate` in path
check(
r#"
pub struct X;
fn foo() -> crate::X { X }
fn main() { f$0oo(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo() -> crate::X
```
"#]],
);
// Check `super` in path
check(
r#"
pub struct X;
mod m { pub fn foo() -> super::X { super::X } }
fn main() { m::f$0oo(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::m
```
```rust
pub fn foo() -> super::X
```
"#]],
);
}
#[test]
fn hover_omits_unnamed_where_preds() {
check(
r#"
pub fn foo(bar: impl T) { }
fn main() { fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo(bar: impl T)
```
"#]],
);
check(
r#"
pub fn foo<V: AsRef<str>>(bar: impl T, baz: V) { }
fn main() { fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo<V>(bar: impl T, baz: V)
where
V: AsRef<str>,
```
"#]],
);
}
#[test]
fn hover_shows_fn_signature_with_type_params() {
check(
r#"
pub fn foo<'a, T: AsRef<str>>(b: &'a T) -> &'a str { }
fn main() { let foo_test = fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo<'a, T>(b: &'a T) -> &'a str
where
T: AsRef<str>,
```
"#]],
);
}
#[test]
fn hover_shows_fn_signature_on_fn_name() {
check(
r#"
pub fn foo$0(a: u32, b: u32) -> u32 {}
fn main() { }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo(a: u32, b: u32) -> u32
```
"#]],
);
}
#[test]
fn hover_shows_fn_doc() {
check(
r#"
/// # Example
/// ```
/// # use std::path::Path;
/// #
/// foo(Path::new("hello, world!"))
/// ```
pub fn foo$0(_: &Path) {}
fn main() { }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo(_: &Path)
```
---
# Example
```
# use std::path::Path;
#
foo(Path::new("hello, world!"))
```
"#]],
);
}
#[test]
fn hover_shows_fn_doc_attr_raw_string() {
check(
r##"
#[doc = r#"Raw string doc attr"#]
pub fn foo$0(_: &Path) {}
fn main() { }
"##,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo(_: &Path)
```
---
Raw string doc attr
"#]],
);
}
#[test]
fn hover_field_offset() {
// Hovering over the field when instantiating
check(
r#"
struct Foo { fiel$0d_a: u8, field_b: i32, field_c: i16 }
"#,
expect![[r#"
*field_a*
```rust
ra_test_fixture::Foo
```
```rust
field_a: u8
```
---
size = 1, align = 1, offset = 6, no Drop
"#]],
);
}
#[test]
fn hover_shows_struct_field_info() {
// Hovering over the field when instantiating
check(
r#"
struct Foo { pub field_a: u32 }
fn main() {
let foo = Foo { field_a$0: 0, };
}
"#,
expect![[r#"
*field_a*
```rust
ra_test_fixture::Foo
```
```rust
pub field_a: u32
```
"#]],
);
// Hovering over the field in the definition
check(
r#"
struct Foo { pub field_a$0: u32 }
fn main() {
let foo = Foo { field_a: 0 };
}
"#,
expect![[r#"
*field_a*
```rust
ra_test_fixture::Foo
```
```rust
pub field_a: u32
```
---
size = 4, align = 4, offset = 0, no Drop
"#]],
);
}
#[test]
fn hover_shows_tuple_struct_field_info() {
check(
r#"
struct Foo(pub u32)
fn main() {
let foo = Foo { 0$0: 0, };
}
"#,
expect![[r#"
*0*
```rust
ra_test_fixture::Foo
```
```rust
pub 0: u32
```
"#]],
);
check(
r#"
struct Foo(pub u32)
fn foo(foo: Foo) {
foo.0$0;
}
"#,
expect![[r#"
*0*
```rust
ra_test_fixture::Foo
```
```rust
pub 0: u32
```
"#]],
);
}
#[test]
fn hover_tuple_struct() {
check(
r#"
struct Foo$0(pub u32) where u32: Copy;
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo(pub u32)
where
u32: Copy,
```
---
size = 4, align = 4, largest padding = 0, no Drop
"#]],
);
}
#[test]
fn hover_record_struct() {
check(
r#"
struct Foo$0 { field: u32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
field: u32,
}
```
---
size = 4, align = 4, largest padding = 0, no Drop
"#]],
);
check(
r#"
struct Foo$0 where u32: Copy { field: u32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo
where
u32: Copy,
{
field: u32,
}
```
---
size = 4, align = 4, largest padding = 0, no Drop
"#]],
);
}
#[test]
fn hover_record_struct_limit() {
check_hover_fields_limit(
3,
r#"
struct Foo$0 { a: u32, b: i32, c: i32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
a: u32,
b: i32,
c: i32,
}
```
---
size = 12 (0xC), align = 4, largest padding = 0, no Drop
"#]],
);
check_hover_fields_limit(
3,
r#"
struct Foo$0 { a: u32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
a: u32,
}
```
---
size = 4, align = 4, largest padding = 0, no Drop
"#]],
);
check_hover_fields_limit(
3,
r#"
struct Foo$0 { a: u32, b: i32, c: i32, d: u32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
a: u32,
b: i32,
c: i32,
/* … */
}
```
---
size = 16 (0x10), align = 4, largest padding = 0, no Drop
"#]],
);
check_hover_fields_limit(
None,
r#"
struct Foo$0 { a: u32, b: i32, c: i32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo
```
---
size = 12 (0xC), align = 4, largest padding = 0, no Drop
"#]],
);
check_hover_fields_limit(
0,
r#"
struct Foo$0 { a: u32, b: i32, c: i32 }
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo { /* … */ }
```
---
size = 12 (0xC), align = 4, largest padding = 0, no Drop
"#]],
);
// No extra spaces within `{}` when there are no fields
check_hover_fields_limit(
5,
r#"
struct Foo$0 {}
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {}
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_record_variant_limit() {
check_hover_fields_limit(
3,
r#"
enum Foo { A$0 { a: u32, b: i32, c: i32 } }
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Foo
```
```rust
A { a: u32, b: i32, c: i32, }
```
---
size = 12 (0xC), align = 4, no Drop
"#]],
);
check_hover_fields_limit(
3,
r#"
enum Foo { A$0 { a: u32 } }
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Foo
```
```rust
A { a: u32, }
```
---
size = 4, align = 4, no Drop
"#]],
);
check_hover_fields_limit(
3,
r#"
enum Foo { A$0 { a: u32, b: i32, c: i32, d: u32 } }
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Foo
```
```rust
A { a: u32, b: i32, c: i32, /* … */ }
```
---
size = 16 (0x10), align = 4, no Drop
"#]],
);
check_hover_fields_limit(
None,
r#"
enum Foo { A$0 { a: u32, b: i32, c: i32 } }
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Foo
```
```rust
A
```
---
size = 12 (0xC), align = 4, no Drop
"#]],
);
check_hover_fields_limit(
0,
r#"
enum Foo { A$0 { a: u32, b: i32, c: i32 } }
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Foo
```
```rust
A { /* … */ }
```
---
size = 12 (0xC), align = 4, no Drop
"#]],
);
}
#[test]
fn hover_enum_limit() {
check_hover_enum_variants_limit(
5,
r#"enum Foo$0 { A, B }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
enum Foo {
A,
B,
}
```
---
size = 1, align = 1, niches = 254, no Drop
"#]],
);
check_hover_enum_variants_limit(
1,
r#"enum Foo$0 { A, B }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
enum Foo {
A,
/* … */
}
```
---
size = 1, align = 1, niches = 254, no Drop
"#]],
);
check_hover_enum_variants_limit(
0,
r#"enum Foo$0 { A, B }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
enum Foo { /* … */ }
```
---
size = 1, align = 1, niches = 254, no Drop
"#]],
);
check_hover_enum_variants_limit(
None,
r#"enum Foo$0 { A, B }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
enum Foo
```
---
size = 1, align = 1, niches = 254, no Drop
"#]],
);
check_hover_enum_variants_limit(
7,
r#"enum Enum$0 {
Variant {},
Variant2 { field: i32 },
Variant3 { field: i32, field2: i32 },
Variant4(),
Variant5(i32),
Variant6(i32, i32),
Variant7,
Variant8,
}"#,
expect![[r#"
*Enum*
```rust
ra_test_fixture
```
```rust
enum Enum {
Variant {},
Variant2 { /* … */ },
Variant3 { /* … */ },
Variant4(),
Variant5( /* … */ ),
Variant6( /* … */ ),
Variant7,
/* … */
}
```
---
size = 12 (0xC), align = 4, niches = a lot, no Drop
"#]],
);
}
#[test]
fn hover_union_limit() {
check_hover_fields_limit(
5,
r#"union Foo$0 { a: u32, b: i32 }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
union Foo {
a: u32,
b: i32,
}
```
---
size = 4, align = 4, no Drop
"#]],
);
check_hover_fields_limit(
1,
r#"union Foo$0 { a: u32, b: i32 }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
union Foo {
a: u32,
/* … */
}
```
---
size = 4, align = 4, no Drop
"#]],
);
check_hover_fields_limit(
0,
r#"union Foo$0 { a: u32, b: i32 }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
union Foo { /* … */ }
```
---
size = 4, align = 4, no Drop
"#]],
);
check_hover_fields_limit(
None,
r#"union Foo$0 { a: u32, b: i32 }"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
union Foo
```
---
size = 4, align = 4, no Drop
"#]],
);
}
#[test]
fn hover_unit_struct() {
check(
r#"
struct Foo$0 where u32: Copy;
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo
where
u32: Copy,
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_type_alias() {
check(
r#"
type Fo$0o: Trait = S where T: Trait;
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
type Foo: Trait = S
where
T: Trait,
```
---
no Drop
"#]],
);
}
#[test]
fn hover_const_static() {
check(
r#"const foo$0: u32 = 123;"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
const foo: u32 = 123 (0x7B)
```
"#]],
);
check(
r#"
const foo$0: u32 = {
let x = foo();
x + 100
};"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
const foo: u32 = {
let x = foo();
x + 100
}
```
"#]],
);
check(
r#"static foo$0: u32 = 456;"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
static foo: u32 = 456 (0x1C8)
```
"#]],
);
check(
r#"const FOO$0: i32 = -2147483648;"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: i32 = -2147483648 (0x80000000)
```
"#]],
);
check(
r#"
const FOO: i32 = -2147483648;
const BAR$0: bool = FOO > 0;
"#,
expect![[r#"
*BAR*
```rust
ra_test_fixture
```
```rust
const BAR: bool = false
```
"#]],
);
}
#[test]
fn hover_unsigned_max_const() {
check(
r#"const $0A: u128 = -1_i128 as u128;"#,
expect![[r#"
*A*
```rust
ra_test_fixture
```
```rust
const A: u128 = 340282366920938463463374607431768211455 (0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
```
"#]],
);
}
#[test]
fn hover_eval_complex_constants() {
check(
r#"
struct X { f1: (), f2: i32 }
const foo$0: (i8, X, i64) = (1, X { f2: 5 - 1, f1: () }, 1 - 2);
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
const foo: (i8, X, i64) = (1, X { f1: (), f2: 4 }, -1)
```
"#]],
);
}
#[test]
fn hover_default_generic_types() {
check(
r#"
struct Test<K, T = u8> { k: K, t: T }
fn main() {
let zz$0 = Test { t: 23u8, k: 33 };
}"#,
expect![[r#"
*zz*
```rust
let zz: Test<i32>
```
---
size = 8, align = 4, no Drop
"#]],
);
check_hover_range(
r#"
struct Test<K, T = u8> { k: K, t: T }
fn main() {
let $0zz$0 = Test { t: 23u8, k: 33 };
}"#,
expect![[r#"
```rust
Test<i32, u8>
```"#]],
);
}
#[test]
fn hover_some() {
check(
r#"
enum Option<T> { Some(T) }
use Option::Some;
fn main() { So$0me(12); }
"#,
expect![[r#"
*Some*
```rust
ra_test_fixture::Option
```
```rust
Some(T)
```
"#]],
);
check(
r#"
enum Option<T> { Some(T) }
use Option::Some;
fn main() { let b$0ar = Some(12); }
"#,
expect![[r#"
*bar*
```rust
let bar: Option<i32>
```
---
size = 4, align = 4, no Drop
"#]],
);
}
#[test]
fn hover_enum_variant() {
check(
r#"
enum Option<T> {
Some(T)
/// The None variant
Non$0e
}
"#,
expect![[r#"
*None*
```rust
ra_test_fixture::Option
```
```rust
None
```
---
no Drop
---
The None variant
"#]],
);
check(
r#"
enum Option<T> {
/// The Some variant
Some(T)
}
fn main() {
let s = Option::Som$0e(12);
}
"#,
expect![[r#"
*Some*
```rust
ra_test_fixture::Option
```
```rust
Some(T)
```
---
The Some variant
"#]],
);
}
#[test]
fn hover_for_local_variable() {
check(
r#"fn func(foo: i32) { fo$0o; }"#,
expect![[r#"
*foo*
```rust
foo: i32
```
"#]],
)
}
#[test]
fn hover_for_local_variable_pat() {
check(
r#"fn func(fo$0o: i32) {}"#,
expect![[r#"
*foo*
```rust
foo: i32
```
---
size = 4, align = 4, no Drop
"#]],
)
}
#[test]
fn hover_local_var_edge() {
check(
r#"fn func(foo: i32) { if true { $0foo; }; }"#,
expect![[r#"
*foo*
```rust
foo: i32
```
"#]],
)
}
#[test]
fn hover_for_param_edge() {
check(
r#"fn func($0foo: i32) {}"#,
expect![[r#"
*foo*
```rust
foo: i32
```
---
size = 4, align = 4, no Drop
"#]],
)
}
#[test]
fn hover_for_param_with_multiple_traits() {
check(
r#"
//- minicore: sized
trait Deref {
type Target: ?Sized;
}
trait DerefMut {
type Target: ?Sized;
}
fn f(_x$0: impl Deref<Target=u8> + DerefMut<Target=u8>) {}"#,
expect![[r#"
*_x*
```rust
_x: impl Deref<Target = u8> + DerefMut<Target = u8>
```
---
type param may need Drop
"#]],
)
}
#[test]
fn test_hover_infer_associated_method_result() {
check(
r#"
struct Thing { x: u32 }
impl Thing {
fn new() -> Thing { Thing { x: 0 } }
}
fn main() { let foo_$0test = Thing::new(); }
"#,
expect![[r#"
*foo_test*
```rust
let foo_test: Thing
```
---
size = 4, align = 4, no Drop
"#]],
)
}
#[test]
fn test_hover_infer_associated_method_exact() {
check(
r#"
mod wrapper {
pub struct Thing { x: u32 }
impl Thing {
pub fn new() -> Thing { Thing { x: 0 } }
}
}
fn main() { let foo_test = wrapper::Thing::new$0(); }
"#,
expect![[r#"
*new*
```rust
ra_test_fixture::wrapper::Thing
```
```rust
pub fn new() -> Thing
```
"#]],
)
}
#[test]
fn test_hover_infer_associated_const_in_pattern() {
check(
r#"
struct X;
impl X {
const C: u32 = 1;
}
fn main() {
match 1 {
X::C$0 => {},
2 => {},
_ => {}
};
}
"#,
expect![[r#"
*C*
```rust
ra_test_fixture::X
```
```rust
const C: u32 = 1
```
"#]],
)
}
#[test]
fn test_hover_self() {
check(
r#"
struct Thing { x: u32 }
impl Thing {
fn new() -> Self { Self$0 { x: 0 } }
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
struct Thing {
x: u32,
}
```
---
size = 4, align = 4
"#]],
);
check_hover_fields_limit(
None,
r#"
struct Thing { x: u32 }
impl Thing {
fn new() -> Self$0 { Self { x: 0 } }
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
struct Thing
```
---
size = 4, align = 4
"#]],
);
check(
r#"
struct Thing { x: u32 }
impl Thing {
fn new() -> Self$0 { Self { x: 0 } }
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
struct Thing {
x: u32,
}
```
---
size = 4, align = 4
"#]],
);
check(
r#"
enum Thing { A }
impl Thing {
pub fn new() -> Self$0 { Thing::A }
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
enum Thing {
A,
}
```
---
size = 0, align = 1
"#]],
);
check(
r#"
enum Thing { A }
impl Thing {
pub fn thing(a: Self$0) {}
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
enum Thing {
A,
}
```
---
size = 0, align = 1
"#]],
);
check(
r#"
impl usize {
pub fn thing(a: Self$0) {}
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
usize
```
---
size = 8, align = 8
"#]],
);
check(
r#"
impl fn() -> usize {
pub fn thing(a: Self$0) {}
}
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
fn() -> usize
```
---
size = 8, align = 8, niches = 1
"#]],
);
check(
r#"
pub struct Foo
where
Self$0:;
"#,
expect![[r#"
*Self*
```rust
ra_test_fixture
```
```rust
pub struct Foo
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn test_hover_shadowing_pat() {
check(
r#"
fn x() {}
fn y() {
let x = 0i32;
x$0;
}
"#,
expect![[r#"
*x*
```rust
let x: i32
```
"#]],
)
}
#[test]
fn test_hover_macro_invocation() {
check(
r#"
macro_rules! foo { (a) => {}; () => {} }
fn f() { fo$0o!(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
macro_rules! foo // matched arm #1
```
"#]],
)
}
#[test]
fn test_hover_macro2_invocation() {
check(
r#"
/// foo bar
///
/// foo bar baz
macro foo() {}
fn f() { fo$0o!(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
macro foo // matched arm #0
```
---
foo bar
foo bar baz
"#]],
)
}
#[test]
fn test_hover_tuple_field() {
check(
r#"struct TS(String, i32$0);"#,
expect![[r#"
*i32*
```rust
i32
```
"#]],
)
}
#[test]
fn test_hover_through_macro() {
check(
r#"
macro_rules! id { ($($tt:tt)*) => { $($tt)* } }
fn foo() {}
id! {
fn bar() { fo$0o(); }
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo()
```
"#]],
);
}
#[test]
fn test_hover_through_attr() {
check(
r#"
//- proc_macros: identity
#[proc_macros::identity]
fn foo$0() {}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo()
```
"#]],
);
}
#[test]
fn test_hover_through_expr_in_macro() {
check(
r#"
macro_rules! id { ($($tt:tt)*) => { $($tt)* } }
fn foo(bar:u32) { let a = id!(ba$0r); }
"#,
expect![[r#"
*bar*
```rust
bar: u32
```
"#]],
);
}
#[test]
fn test_hover_through_expr_in_macro_recursive() {
check(
r#"
macro_rules! id_deep { ($($tt:tt)*) => { $($tt)* } }
macro_rules! id { ($($tt:tt)*) => { id_deep!($($tt)*) } }
fn foo(bar:u32) { let a = id!(ba$0r); }
"#,
expect![[r#"
*bar*
```rust
bar: u32
```
"#]],
);
}
#[test]
fn test_hover_through_func_in_macro_recursive() {
check(
r#"
macro_rules! id_deep { ($($tt:tt)*) => { $($tt)* } }
macro_rules! id { ($($tt:tt)*) => { id_deep!($($tt)*) } }
fn bar() -> u32 { 0 }
fn foo() { let a = id!([0u32, bar$0()] ); }
"#,
expect![[r#"
*bar*
```rust
ra_test_fixture
```
```rust
fn bar() -> u32
```
"#]],
);
}
#[test]
fn test_hover_through_assert_macro() {
check(
r#"
#[rustc_builtin_macro]
macro_rules! assert {}
fn bar() -> bool { true }
fn foo() {
assert!(ba$0r());
}
"#,
expect![[r#"
*bar*
```rust
ra_test_fixture
```
```rust
fn bar() -> bool
```
"#]],
);
}
#[test]
fn test_hover_multiple_actions() {
check_actions(
r#"
struct Bar;
struct Foo { bar: Bar }
fn foo(Foo { b$0ar }: &Foo) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Bar",
kind: Struct,
description: "struct Bar",
},
},
],
),
]
"#]],
)
}
#[test]
fn test_hover_show_type_def_for_subst() {
check_actions(
r#"
fn f<T>(t: T) {
}
struct S;
fn test() {
let a = S;
f$0(a);
}
"#,
expect![[r#"
[
Reference(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 3,
},
),
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 20..29,
focus_range: 27..28,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_show_type_def_for_func_param() {
check_actions(
r#"
struct Bar;
fn f(b: Bar) {
}
fn test() {
let b = Bar;
f$0(b);
}
"#,
expect![[r#"
[
Reference(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 15,
},
),
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Bar",
kind: Struct,
description: "struct Bar",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_show_type_def_for_trait_bound() {
check_actions(
r#"
trait Bar {}
fn f<T: Bar>(b: T) {
}
fn test() {
f$0();
}
"#,
expect![[r#"
[
Reference(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 16,
},
),
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Bar",
kind: Trait,
description: "trait Bar",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_non_ascii_space_doc() {
check(
"
///　<- `\u{3000}` here
fn foo() { }
fn bar() { fo$0o(); }
",
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo()
```
---
\<- `　` here
"#]],
);
}
#[test]
fn test_hover_function_show_qualifiers() {
check(
r#"async fn foo$0() {}"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
async fn foo()
```
"#]],
);
check(
r#"pub const unsafe fn foo$0() {}"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub const unsafe fn foo()
```
"#]],
);
// Top level `pub(crate)` will be displayed as no visibility.
check(
r#"mod m { pub(crate) async unsafe extern "C" fn foo$0() {} }"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::m
```
```rust
pub(crate) async unsafe extern "C" fn foo()
```
"#]],
);
}
#[test]
fn test_hover_function_show_types() {
check(
r#"fn foo$0(a: i32, b:i32) -> i32 { 0 }"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo(a: i32, b: i32) -> i32
```
"#]],
);
}
#[test]
fn test_hover_function_associated_type_params() {
check(
r#"
trait Foo { type Bar; }
impl Foo for i32 { type Bar = i64; }
fn foo(arg: <i32 as Foo>::Bar) {}
fn main() { foo$0; }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo(arg: <i32 as Foo>::Bar)
```
"#]],
);
check(
r#"
trait Foo<T> { type Bar<U>; }
impl Foo<i64> for i32 { type Bar<U> = i32; }
fn foo(arg: <<i32 as Foo<i64>>::Bar<i8> as Foo<i64>>::Bar<i8>) {}
fn main() { foo$0; }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo(arg: <<i32 as Foo<i64>>::Bar<i8> as Foo<i64>>::Bar<i8>)
```
"#]],
);
}
#[test]
fn test_hover_function_pointer_show_identifiers() {
check(
r#"type foo$0 = fn(a: i32, b: i32) -> i32;"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
type foo = fn(a: i32, b: i32) -> i32
```
---
size = 8, align = 8, niches = 1, no Drop
"#]],
);
}
#[test]
fn test_hover_function_pointer_no_identifier() {
check(
r#"type foo$0 = fn(i32, _: i32) -> i32;"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
type foo = fn(i32, i32) -> i32
```
---
size = 8, align = 8, niches = 1, no Drop
"#]],
);
}
#[test]
fn test_hover_trait_show_qualifiers() {
check_actions(
r"unsafe trait foo$0() {}",
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 13,
},
),
]
"#]],
);
}
#[test]
fn test_hover_extern_crate() {
check(
r#"
//- /main.rs crate:main deps:std
//! Crate docs
/// Decl docs!
extern crate st$0d;
//- /std/lib.rs crate:std
//! Standard library for this test
//!
//! Printed?
//! abc123
"#,
expect![[r#"
*std*
```rust
main
```
```rust
extern crate std
```
---
Decl docs!
Standard library for this test
Printed?
abc123
"#]],
);
check(
r#"
//- /main.rs crate:main deps:std
//! Crate docs
/// Decl docs!
extern crate std as ab$0c;
//- /std/lib.rs crate:std
//! Standard library for this test
//!
//! Printed?
//! abc123
"#,
expect![[r#"
*abc*
```rust
main
```
```rust
extern crate std as abc
```
---
Decl docs!
Standard library for this test
Printed?
abc123
"#]],
);
}
#[test]
fn test_hover_mod_with_same_name_as_function() {
check(
r#"
use self::m$0y::Bar;
mod my { pub struct Bar; }
fn my() {}
"#,
expect![[r#"
*my*
```rust
ra_test_fixture
```
```rust
mod my
```
"#]],
);
}
#[test]
fn test_hover_struct_doc_comment() {
check(
r#"
/// This is an example
/// multiline doc
///
/// # Example
///
/// ```
/// let five = 5;
///
/// assert_eq!(6, my_crate::add_one(5));
/// ```
struct Bar;
fn foo() { let bar = Ba$0r; }
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture
```
```rust
struct Bar
```
---
This is an example
multiline doc
# Example
```
let five = 5;
assert_eq!(6, my_crate::add_one(5));
```
"#]],
);
}
#[test]
fn test_hover_struct_doc_attr() {
check(
r#"
#[doc = "bar docs"]
struct Bar;
fn foo() { let bar = Ba$0r; }
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture
```
```rust
struct Bar
```
---
bar docs
"#]],
);
}
#[test]
fn test_hover_struct_doc_attr_multiple_and_mixed() {
check(
r#"
/// bar docs 0
#[doc = "bar docs 1"]
#[doc = "bar docs 2"]
struct Bar;
fn foo() { let bar = Ba$0r; }
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture
```
```rust
struct Bar
```
---
bar docs 0
bar docs 1
bar docs 2
"#]],
);
}
#[test]
fn test_hover_external_url() {
check(
r#"
pub struct Foo;
/// [external](https://www.google.com)
pub struct B$0ar
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture
```
```rust
pub struct Bar
```
---
size = 0, align = 1, no Drop
---
[external](https://www.google.com)
"#]],
);
}
// Check that we don't rewrite links which we can't identify
#[test]
fn test_hover_unknown_target() {
check(
r#"
pub struct Foo;
/// [baz](Baz)
pub struct B$0ar
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture
```
```rust
pub struct Bar
```
---
size = 0, align = 1, no Drop
---
[baz](Baz)
"#]],
);
}
#[test]
fn test_hover_no_links() {
check_hover_no_links(
r#"
/// Test cases:
/// case 1. bare URL: https://www.example.com/
/// case 2. inline URL with title: [example](https://www.example.com/)
/// case 3. code reference: [`Result`]
/// case 4. code reference but miss footnote: [`String`]
/// case 5. autolink: <http://www.example.com/>
/// case 6. email address: <test@example.com>
/// case 7. reference: [example][example]
/// case 8. collapsed link: [example][]
/// case 9. shortcut link: [example]
/// case 10. inline without URL: [example]()
/// case 11. reference: [foo][foo]
/// case 12. reference: [foo][bar]
/// case 13. collapsed link: [foo][]
/// case 14. shortcut link: [foo]
/// case 15. inline without URL: [foo]()
/// case 16. just escaped text: \[foo]
/// case 17. inline link: [Foo](foo::Foo)
///
/// [`Result`]: ../../std/result/enum.Result.html
/// [^example]: https://www.example.com/
pub fn fo$0o() {}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
pub fn foo()
```
---
Test cases:
case 1. bare URL: https://www.example.com/
case 2. inline URL with title: [example](https://www.example.com/)
case 3. code reference: `Result`
case 4. code reference but miss footnote: `String`
case 5. autolink: http://www.example.com/
case 6. email address: test@example.com
case 7. reference: example
case 8. collapsed link: example
case 9. shortcut link: example
case 10. inline without URL: example
case 11. reference: foo
case 12. reference: foo
case 13. collapsed link: foo
case 14. shortcut link: foo
case 15. inline without URL: foo
case 16. just escaped text: \[foo\]
case 17. inline link: Foo
[^example]: https://www.example.com/
"#]],
);
}
#[test]
fn test_hover_layout_of_variant() {
check(
r#"enum Foo {
Va$0riant1(u8, u16),
Variant2(i32, u8, i64),
}"#,
expect![[r#"
*Variant1*
```rust
ra_test_fixture::Foo
```
```rust
Variant1(u8, u16)
```
---
size = 4, align = 2, no Drop
"#]],
);
}
#[test]
fn test_hover_layout_of_variant_generic() {
check(
r#"enum Option<T> {
Some(T),
None$0
}"#,
expect![[r#"
*None*
```rust
ra_test_fixture::Option
```
```rust
None
```
---
no Drop
"#]],
);
}
#[test]
fn test_hover_layout_generic_unused() {
check(
r#"
//- minicore: phantom_data
struct S$0<T>(core::marker::PhantomData<T>);
"#,
expect![[r#"
*S*
```rust
ra_test_fixture
```
```rust
struct S<T>(PhantomData<T>)
```
---
size = 0, align = 1, largest padding = 0, no Drop
"#]],
);
}
#[test]
fn test_hover_layout_of_enum() {
check(
r#"enum $0Foo {
Variant1(u8, u16),
Variant2(i32, u8, i64),
}"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
enum Foo {
Variant1( /* … */ ),
Variant2( /* … */ ),
}
```
---
size = 16 (0x10), align = 8, niches = 254, no Drop
"#]],
);
}
#[test]
fn test_hover_layout_padding_info() {
check(
r#"struct $0Foo {
x: bool,
y: i64,
z: u32,
}"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
x: bool,
y: i64,
z: u32,
}
```
---
size = 16 (0x10), align = 8, largest padding = 3, niches = 254, no Drop
"#]],
);
check(
r#"#[repr(align(32))]
struct $0Foo {
x: bool,
y: i64,
z: u32,
}"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
x: bool,
y: i64,
z: u32,
}
```
---
size = 32 (0x20), align = 32 (0x20), largest padding = 19 (0x13), niches = 254, no Drop
"#]],
);
check(
r#"#[repr(C)]
struct $0Foo {
x: bool,
y: i64,
z: u32,
}"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo {
x: bool,
y: i64,
z: u32,
}
```
---
size = 24 (0x18), align = 8, tail padding = 4, niches = 254, no Drop
"#]],
);
check(
r#"struct $0Foo(i16, u128, u64)"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo(i16, u128, u64)
```
---
size = 32 (0x20), align = 8, largest padding = 6, no Drop
"#]],
);
}
#[test]
fn test_hover_no_memory_layout() {
check_hover_no_memory_layout(
r#"struct Foo { fiel$0d_a: u8, field_b: i32, field_c: i16 }"#,
expect![[r#"
*field_a*
```rust
ra_test_fixture::Foo
```
```rust
field_a: u8
```
---
no Drop
"#]],
);
check_hover_no_memory_layout(
r#"
//- minicore: copy
fn main() {
let x = 2;
let y = $0|z| x + z;
}
"#,
expect![[r#"
*|*
```rust
impl Fn(i32) -> i32
```
## Captures
* `x` by immutable borrow
"#]],
);
}
#[test]
fn test_hover_macro_generated_struct_fn_doc_comment() {
cov_mark::check!(hover_macro_generated_struct_fn_doc_comment);
check(
r#"
macro_rules! bar {
() => {
struct Bar;
impl Bar {
/// Do the foo
fn foo(&self) {}
}
}
}
bar!();
fn foo() { let bar = Bar; bar.fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Bar
```
```rust
fn foo(&self)
```
---
Do the foo
"#]],
);
}
#[test]
fn test_hover_macro_generated_struct_fn_doc_attr() {
cov_mark::check!(hover_macro_generated_struct_fn_doc_attr);
check(
r#"
macro_rules! bar {
() => {
struct Bar;
impl Bar {
#[doc = "Do the foo"]
fn foo(&self) {}
}
}
}
bar!();
fn foo() { let bar = Bar; bar.fo$0o(); }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Bar
```
```rust
fn foo(&self)
```
---
Do the foo
"#]],
);
}
#[test]
fn test_hover_variadic_function() {
check(
r#"
extern "C" {
pub fn foo(bar: i32, ...) -> i32;
}
fn main() { let foo_test = unsafe { fo$0o(1, 2, 3); } }
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::<extern>
```
```rust
pub unsafe fn foo(bar: i32, ...) -> i32
```
"#]],
);
}
#[test]
fn test_hover_trait_has_impl_action() {
check_actions(
r#"trait foo$0() {}"#,
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 6,
},
),
]
"#]],
);
}
#[test]
fn test_hover_struct_has_impl_action() {
check_actions(
r"struct foo$0() {}",
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 7,
},
),
]
"#]],
);
}
#[test]
fn test_hover_union_has_impl_action() {
check_actions(
r#"union foo$0() {}"#,
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 6,
},
),
]
"#]],
);
}
#[test]
fn test_hover_enum_has_impl_action() {
check_actions(
r"enum foo$0() { A, B }",
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 5,
},
),
]
"#]],
);
}
#[test]
fn test_hover_self_has_impl_action() {
check_actions(
r#"struct foo where Self$0:;"#,
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 7,
},
),
]
"#]],
);
}
#[test]
fn test_hover_test_has_action() {
check_actions(
r#"
#[test]
fn foo_$0test() {}
"#,
expect![[r#"
[
Reference(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 11,
},
),
Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..24,
focus_range: 11..19,
name: "foo_test",
kind: Function,
},
kind: Test {
test_id: Path(
"foo_test",
),
attr: TestAttr {
ignore: false,
},
},
cfg: None,
update_test: UpdateTest {
expect_test: false,
insta: false,
snapbox: false,
},
},
),
]
"#]],
);
}
#[test]
fn test_hover_test_mod_has_action() {
check_actions(
r#"
mod tests$0 {
#[test]
fn foo_test() {}
}
"#,
expect![[r#"
[
Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..46,
focus_range: 4..9,
name: "tests",
kind: Module,
description: "mod tests",
},
kind: TestMod {
path: "tests",
},
cfg: None,
update_test: UpdateTest {
expect_test: false,
insta: false,
snapbox: false,
},
},
),
]
"#]],
);
}
#[test]
fn test_hover_struct_has_goto_type_action() {
check_actions(
r#"
struct S{ f1: u32 }
fn main() { let s$0t = S{ f1:0 }; }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..19,
focus_range: 7..8,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_generic_struct_has_goto_type_actions() {
check_actions(
r#"
struct Arg(u32);
struct S<T>{ f1: T }
fn main() { let s$0t = S{ f1:Arg(0) }; }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Arg",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..16,
focus_range: 7..10,
name: "Arg",
kind: Struct,
description: "struct Arg(u32)",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 17..37,
focus_range: 24..25,
name: "S",
kind: Struct,
description: "struct S<T>",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_generic_excludes_sized_go_to_action() {
check_actions(
r#"
//- minicore: sized
struct S<T$0>(T);
"#,
expect![[r#"
[]
"#]],
);
}
#[test]
fn test_hover_generic_struct_has_flattened_goto_type_actions() {
check_actions(
r#"
struct Arg(u32);
struct S<T>{ f1: T }
fn main() { let s$0t = S{ f1: S{ f1: Arg(0) } }; }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Arg",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..16,
focus_range: 7..10,
name: "Arg",
kind: Struct,
description: "struct Arg(u32)",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 17..37,
focus_range: 24..25,
name: "S",
kind: Struct,
description: "struct S<T>",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_tuple_has_goto_type_actions() {
check_actions(
r#"
struct A(u32);
struct B(u32);
mod M {
pub struct C(u32);
}
fn main() { let s$0t = (A(1), B(2), M::C(3) ); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::A",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..14,
focus_range: 7..8,
name: "A",
kind: Struct,
description: "struct A(u32)",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::B",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 15..29,
focus_range: 22..23,
name: "B",
kind: Struct,
description: "struct B(u32)",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::M::C",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 42..60,
focus_range: 53..54,
name: "C",
kind: Struct,
container_name: "M",
description: "pub struct C(u32)",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_return_impl_trait_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
fn foo() -> impl Foo {}
fn main() { let s$0t = foo(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_generic_return_impl_trait_has_goto_type_action() {
check_actions(
r#"
trait Foo<T> {}
struct S;
fn foo() -> impl Foo<S> {}
fn main() { let s$0t = foo(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..15,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 16..25,
focus_range: 23..24,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_return_impl_traits_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
trait Bar {}
fn foo() -> impl Foo + Bar {}
fn main() { let s$0t = foo(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 13..25,
focus_range: 19..22,
name: "Bar",
kind: Trait,
description: "trait Bar",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_generic_return_impl_traits_has_goto_type_action() {
check_actions(
r#"
trait Foo<T> {}
trait Bar<T> {}
struct S1 {}
struct S2 {}
fn foo() -> impl Foo<S1> + Bar<S2> {}
fn main() { let s$0t = foo(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 16..31,
focus_range: 22..25,
name: "Bar",
kind: Trait,
description: "trait Bar<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..15,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S1",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 32..44,
focus_range: 39..41,
name: "S1",
kind: Struct,
description: "struct S1",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S2",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 45..57,
focus_range: 52..54,
name: "S2",
kind: Struct,
description: "struct S2",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_arg_impl_trait_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
fn foo(ar$0g: &impl Foo) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_arg_impl_traits_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
trait Bar<T> {}
struct S{}
fn foo(ar$0g: &impl Foo + Bar<S>) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 13..28,
focus_range: 19..22,
name: "Bar",
kind: Trait,
description: "trait Bar<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 29..39,
focus_range: 36..37,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_async_block_impl_trait_has_goto_type_action() {
check_actions(
r#"
//- /main.rs crate:main deps:core
// we don't use minicore here so that this test doesn't randomly fail
// when someone edits minicore
struct S;
fn foo() {
let fo$0o = async { S };
}
//- /core.rs crate:core
pub mod future {
#[lang = "future_trait"]
pub trait Future {}
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "core::future::Future",
nav: NavigationTarget {
file_id: FileId(
1,
),
full_range: 4294967295..4294967295,
focus_range: 4294967295..4294967295,
name: "Future",
kind: Trait,
container_name: "future",
description: "pub trait Future",
},
},
HoverGotoTypeData {
mod_path: "main::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..110,
focus_range: 108..109,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_arg_generic_impl_trait_has_goto_type_action() {
check_actions(
r#"
trait Foo<T> {}
struct S {}
fn foo(ar$0g: &impl Foo<S>) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..15,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 16..27,
focus_range: 23..24,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_dyn_return_has_goto_type_action() {
check_actions(
r#"
trait Foo<T> {}
struct S;
impl Foo<S> for S {}
struct B<T>{}
fn foo() -> B<dyn Foo<S>> {}
fn main() { let s$0t = foo(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::B",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 48..61,
focus_range: 55..56,
name: "B",
kind: Struct,
description: "struct B<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..15,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 16..25,
focus_range: 23..24,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_dyn_arg_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
fn foo(ar$0g: &dyn Foo) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_generic_dyn_arg_has_goto_type_action() {
check_actions(
r#"
trait Foo<T> {}
struct S {}
fn foo(ar$0g: &dyn Foo<S>) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..15,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 16..27,
focus_range: 23..24,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_goto_type_action_links_order() {
check_actions(
r#"
trait ImplTrait<T> {}
trait DynTrait<T> {}
struct B<T> {}
struct S {}
fn foo(a$0rg: &impl ImplTrait<B<dyn DynTrait<B<S>>>>) {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::B",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 43..57,
focus_range: 50..51,
name: "B",
kind: Struct,
description: "struct B<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::DynTrait",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 22..42,
focus_range: 28..36,
name: "DynTrait",
kind: Trait,
description: "trait DynTrait<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::ImplTrait",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..21,
focus_range: 6..15,
name: "ImplTrait",
kind: Trait,
description: "trait ImplTrait<T>",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 58..69,
focus_range: 65..66,
name: "S",
kind: Struct,
description: "struct S",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_associated_type_has_goto_type_action() {
check_actions(
r#"
trait Foo {
type Item;
fn get(self) -> Self::Item {}
}
struct Bar{}
struct S{}
impl Foo for S { type Item = Bar; }
fn test() -> impl Foo { S {} }
fn main() { let s$0t = test().get(); }
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..62,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_const_param_has_goto_type_action() {
check_actions(
r#"
struct Bar;
struct Foo<const BAR: Bar>;
impl<const BAR: Bar> Foo<BAR$0> {}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Bar",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Bar",
kind: Struct,
description: "struct Bar",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_type_param_has_goto_type_action() {
check_actions(
r#"
trait Foo {}
fn foo<T: Foo>(t: T$0){}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 6..9,
name: "Foo",
kind: Trait,
description: "trait Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn test_hover_self_has_go_to_type() {
check_actions(
r#"
struct Foo;
impl Foo {
fn foo(&self$0) {}
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn hover_displays_normalized_crate_names() {
check(
r#"
//- /lib.rs crate:name-with-dashes
pub mod wrapper {
pub struct Thing { x: u32 }
impl Thing {
pub fn new() -> Thing { Thing { x: 0 } }
}
}
//- /main.rs crate:main deps:name-with-dashes
fn main() { let foo_test = name_with_dashes::wrapper::Thing::new$0(); }
"#,
expect![[r#"
*new*
```rust
name_with_dashes::wrapper::Thing
```
```rust
pub fn new() -> Thing
```
"#]],
)
}
#[test]
fn hover_field_pat_shorthand_ref_match_ergonomics() {
check(
r#"
struct S {
f: i32,
}
fn main() {
let s = S { f: 0 };
let S { f$0 } = &s;
}
"#,
expect![[r#"
*f*
```rust
let f: &i32
```
---
size = 8, align = 8, niches = 1, no Drop
---
```rust
ra_test_fixture::S
```
```rust
f: i32
```
---
size = 4, align = 4, offset = 0, no Drop
"#]],
);
}
#[test]
fn const_generic_order() {
check(
r#"
struct Foo;
struct S$0T<const C: usize = 1, T = Foo>(T);
"#,
expect![[r#"
*ST*
```rust
ra_test_fixture
```
```rust
struct ST<const C: usize = {const}, T = Foo>(T)
```
---
size = 0, align = 1, type param may need Drop
"#]],
);
}
#[test]
fn const_generic_default_value() {
check(
r#"
struct Foo;
struct S$0T<const C: usize = {40 + 2}, T = Foo>(T);
"#,
expect![[r#"
*ST*
```rust
ra_test_fixture
```
```rust
struct ST<const C: usize = {const}, T = Foo>(T)
```
---
size = 0, align = 1, type param may need Drop
"#]],
);
}
#[test]
fn const_generic_default_value_2() {
check(
r#"
struct Foo;
const VAL = 1;
struct S$0T<const C: usize = VAL, T = Foo>(T);
"#,
expect![[r#"
*ST*
```rust
ra_test_fixture
```
```rust
struct ST<const C: usize = {const}, T = Foo>(T)
```
---
size = 0, align = 1, type param may need Drop
"#]],
);
}
#[test]
fn const_generic_positive_i8_literal() {
check(
r#"
struct Const<const N: i8>;
fn main() {
let v$0alue = Const::<1>;
}
"#,
expect![[r#"
*value*
```rust
let value: Const<1>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn const_generic_zero_i8_literal() {
check(
r#"
struct Const<const N: i8>;
fn main() {
let v$0alue = Const::<0>;
}
"#,
expect![[r#"
*value*
```rust
let value: Const<0>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn const_generic_negative_i8_literal() {
check(
r#"
struct Const<const N: i8>;
fn main() {
let v$0alue = Const::<-1>;
}
"#,
expect![[r#"
*value*
```rust
let value: Const<_>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn const_generic_bool_literal() {
check(
r#"
struct Const<const F: bool>;
fn main() {
let v$0alue = Const::<true>;
}
"#,
expect![[r#"
*value*
```rust
let value: Const<true>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn const_generic_char_literal() {
check(
r#"
struct Const<const C: char>;
fn main() {
let v$0alue = Const::<'🦀'>;
}
"#,
expect![[r#"
*value*
```rust
let value: Const<'🦀'>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_self_param_shows_type() {
check(
r#"
struct Foo {}
impl Foo {
fn bar(&sel$0f) {}
}
"#,
expect![[r#"
*self*
```rust
self: &Foo
```
---
size = 8, align = 8, niches = 1, no Drop
"#]],
);
}
#[test]
fn hover_self_param_shows_type_for_arbitrary_self_type() {
check(
r#"
struct Arc<T>(T);
struct Foo {}
impl Foo {
fn bar(sel$0f: Arc<Foo>) {}
}
"#,
expect![[r#"
*self*
```rust
self: Arc<Foo>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_doc_outer_inner() {
check(
r#"
/// Be quick;
mod Foo$0 {
//! time is mana
/// This comment belongs to the function
fn foo() {}
}
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
mod Foo
```
---
Be quick;
time is mana
"#]],
);
}
#[test]
fn hover_doc_outer_inner_attribute() {
check(
r#"
#[doc = "Be quick;"]
mod Foo$0 {
#![doc = "time is mana"]
#[doc = "This comment belongs to the function"]
fn foo() {}
}
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
mod Foo
```
---
Be quick;
time is mana
"#]],
);
}
#[test]
fn hover_doc_block_style_indent_end() {
check(
r#"
/**
foo
```rust
let x = 3;
```
*/
fn foo$0() {}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo()
```
---
foo
```rust
let x = 3;
```
"#]],
);
}
#[test]
fn hover_comments_dont_highlight_parent() {
cov_mark::check!(no_highlight_on_comment_hover);
check_hover_no_result(
r#"
fn no_hover() {
// no$0hover
}
"#,
);
}
#[test]
fn hover_label() {
check(
r#"
fn foo() {
'label$0: loop {}
}
"#,
expect![[r#"
*'label*
```rust
'label
```
"#]],
);
}
#[test]
fn hover_lifetime() {
check(
r#"fn foo<'lifetime>(_: &'lifetime$0 ()) {}"#,
expect![[r#"
*'lifetime*
```rust
ra_test_fixture::foo
```
```rust
'lifetime
```
"#]],
);
check(
r#"fn foo(_: &'static$0 ()) {}"#,
expect![[r#"
*'static*
```rust
'static
```
"#]],
);
}
#[test]
fn hover_type_param() {
check(
r#"
//- minicore: sized
struct Foo<T>(T);
trait TraitA {}
trait TraitB {}
impl<T: TraitA + TraitB> Foo<T$0> where T: Sized {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::Foo
```
```rust
T: TraitA + TraitB
```
"#]],
);
check(
r#"
//- minicore: sized
struct Foo<T>(T);
impl<T> Foo<T$0> {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::Foo
```
```rust
T
```
"#]],
);
check(
r#"
//- minicore: sized
struct Foo<T>(T);
impl<T: 'static> Foo<T$0> {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::Foo
```
```rust
T: 'static
```
"#]],
);
}
#[test]
fn hover_type_param_sized_bounds() {
// implicit `: Sized` bound
check(
r#"
//- minicore: sized
trait Trait {}
struct Foo<T>(T);
impl<T$0: Trait> Foo<T> {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::Foo
```
```rust
T: Trait
```
"#]],
);
check(
r#"
//- minicore: sized
trait Trait {}
struct Foo<T>(T);
impl<T$0: Trait + ?Sized> Foo<T> {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::Foo
```
```rust
T: Trait + ?Sized
```
"#]],
);
}
mod type_param_sized_bounds {
use super::*;
#[test]
fn single_implicit() {
check(
r#"
//- minicore: sized
fn foo<T$0>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T
```
---
invariant
"#]],
);
}
#[test]
fn single_explicit() {
check(
r#"
//- minicore: sized
fn foo<T$0: Sized>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T
```
---
invariant
"#]],
);
}
#[test]
fn single_relaxed() {
check(
r#"
//- minicore: sized
fn foo<T$0: ?Sized>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T: ?Sized
```
---
invariant
"#]],
);
}
#[test]
fn multiple_implicit() {
check(
r#"
//- minicore: sized
trait Trait {}
fn foo<T$0: Trait>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T: Trait
```
---
invariant
"#]],
);
}
#[test]
fn multiple_explicit() {
check(
r#"
//- minicore: sized
trait Trait {}
fn foo<T$0: Trait + Sized>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T: Trait
```
---
invariant
"#]],
);
}
#[test]
fn multiple_relaxed() {
check(
r#"
//- minicore: sized
trait Trait {}
fn foo<T$0: Trait + ?Sized>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T: Trait + ?Sized
```
---
invariant
"#]],
);
}
#[test]
fn mixed() {
check(
r#"
//- minicore: sized
fn foo<T$0: ?Sized + Sized + Sized>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T
```
---
invariant
"#]],
);
}
#[test]
fn mixed2() {
check(
r#"
//- minicore: sized
trait Trait {}
fn foo<T$0: Sized + ?Sized + Sized + Trait>() {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture::foo
```
```rust
T: Trait
```
---
invariant
"#]],
);
}
}
#[test]
fn hover_const_generic_type_alias() {
check(
r#"
struct Foo<const LEN: usize>;
type Fo$0o2 = Foo<2>;
"#,
expect![[r#"
*Foo2*
```rust
ra_test_fixture
```
```rust
type Foo2 = Foo<<expr>>
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_const_param() {
check(
r#"
struct Foo<const LEN: usize>;
impl<const LEN: usize> Foo<LEN$0> {}
"#,
expect![[r#"
*LEN*
```rust
ra_test_fixture::Foo
```
```rust
const LEN: usize
```
"#]],
);
}
#[test]
fn hover_const_eval_discriminant() {
// Don't show hex for <10
check(
r#"
#[repr(u8)]
enum E {
/// This is a doc
A$0 = 1 << 3,
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::E
```
```rust
A = 8
```
---
size = 1, align = 1, no Drop
---
This is a doc
"#]],
);
// Show hex for >10
check(
r#"
#[repr(u8)]
enum E {
/// This is a doc
A$0 = (1 << 3) + (1 << 2),
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::E
```
```rust
A = 12 (0xC)
```
---
size = 1, align = 1, no Drop
---
This is a doc
"#]],
);
// enums in const eval
check(
r#"
#[repr(u8)]
enum E {
A = 1,
/// This is a doc
B$0 = E::A as u8 + 1,
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture::E
```
```rust
B = 2
```
---
size = 1, align = 1, no Drop
---
This is a doc
"#]],
);
// unspecified variant should increment by one
check(
r#"
#[repr(u8)]
enum E {
A = 4,
/// This is a doc
B$0,
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture::E
```
```rust
B = 5
```
---
size = 1, align = 1, no Drop
---
This is a doc
"#]],
);
}
#[test]
fn hover_const_eval() {
check(
r#"
trait T {
const B: bool = false;
}
impl T for <()> {
/// true
const B: bool = true;
}
fn main() {
<()>::B$0;
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture
```
```rust
const B: bool = true
```
---
true
"#]],
);
check(
r#"
struct A {
i: i32
};
trait T {
const AA: A = A {
i: 1
};
}
impl T for i32 {
const AA: A = A {
i: 2 + 3
}
}
fn main() {
<i32>::AA$0;
}
"#,
expect![[r#"
*AA*
```rust
ra_test_fixture
```
```rust
const AA: A = A { i: 5 }
```
"#]],
);
check(
r#"
trait T {
/// false
const B: bool = false;
}
impl T for () {
/// true
const B: bool = true;
}
fn main() {
T::B$0;
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture::T
```
```rust
const B: bool = false
```
---
false
"#]],
);
check(
r#"
trait T {
/// false
const B: bool = false;
}
impl T for () {
}
fn main() {
<()>::B$0;
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture::T
```
```rust
const B: bool = false
```
---
`Self` = `()`
---
false
"#]],
);
check(
r#"
trait T {
/// false
const B: bool = false;
}
impl T for () {
/// true
const B: bool = true;
}
impl T for i32 {}
fn main() {
<i32>::B$0;
}
"#,
expect![[r#"
*B*
```rust
ra_test_fixture::T
```
```rust
const B: bool = false
```
---
`Self` = `i32`
---
false
"#]],
);
// show hex for <10
check(
r#"
/// This is a doc
const FOO$0: usize = 1 << 3;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: usize = 8
```
---
This is a doc
"#]],
);
check(
r#"
/// This is a doc
const FOO$0: usize = (1 << 3) + (1 << 2);
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: usize = 12 (0xC)
```
---
This is a doc
"#]],
);
// show original body when const eval fails
check(
r#"
/// This is a doc
const FOO$0: usize = 2 - 3;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: usize = 2 - 3
```
---
This is a doc
"#]],
);
// don't show hex for negatives
check(
r#"
/// This is a doc
const FOO$0: i32 = 2 - 3;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: i32 = -1 (0xFFFFFFFF)
```
---
This is a doc
"#]],
);
check(
r#"
/// This is a doc
const FOO$0: &str = "bar";
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &str = "bar"
```
---
This is a doc
"#]],
);
// show char literal
check(
r#"
/// This is a doc
const FOO$0: char = 'a';
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: char = 'a'
```
---
This is a doc
"#]],
);
// show escaped char literal
check(
r#"
/// This is a doc
const FOO$0: char = '\x61';
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: char = 'a'
```
---
This is a doc
"#]],
);
// show byte literal
check(
r#"
/// This is a doc
const FOO$0: u8 = b'a';
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: u8 = 97 (0x61)
```
---
This is a doc
"#]],
);
// show escaped byte literal
check(
r#"
/// This is a doc
const FOO$0: u8 = b'\x61';
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: u8 = 97 (0x61)
```
---
This is a doc
"#]],
);
// show float literal
check(
r#"
/// This is a doc
const FOO$0: f64 = 1.0234;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f64 = 1.0234
```
---
This is a doc
"#]],
);
//show float typecasted from int
check(
r#"
/// This is a doc
const FOO$0: f32 = 1f32;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f32 = 1.0
```
---
This is a doc
"#]],
);
// Don't show `<ref-not-supported>` in const hover
check(
r#"
/// This is a doc
const FOO$0: &i32 = &2;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &i32 = &2
```
---
This is a doc
"#]],
);
//show f64 typecasted from float
check(
r#"
/// This is a doc
const FOO$0: f64 = 1.0f64;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f64 = 1.0
```
---
This is a doc
"#]],
);
}
#[test]
fn hover_const_eval_floating_point() {
check(
r#"
extern "rust-intrinsic" {
pub fn expf64(x: f64) -> f64;
}
const FOO$0: f64 = expf64(1.2);
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f64 = 3.3201169227365472
```
"#]],
);
// check `f32` isn't double rounded via `f64`
check(
r#"
/// This is a doc
const FOO$0: f32 = 1.9999999403953552_f32;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f32 = 1.9999999
```
---
This is a doc
"#]],
);
// Check `f16` and `f128`
check(
r#"
/// This is a doc
const FOO$0: f16 = -1.0f16;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f16 = -1.0
```
---
This is a doc
"#]],
);
check(
r#"
/// This is a doc
const FOO$0: f128 = -1.0f128;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: f128 = -1.0
```
---
This is a doc
"#]],
);
}
#[test]
fn hover_const_eval_enum() {
check(
r#"
enum Enum {
V1,
V2,
}
const VX: Enum = Enum::V1;
const FOO$0: Enum = VX;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: Enum = V1
```
"#]],
);
check(
r#"
//- minicore: option
const FOO$0: Option<i32> = Some(2);
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: Option<i32> = Some(2)
```
"#]],
);
check(
r#"
//- minicore: option
const FOO$0: Option<&i32> = Some(2).as_ref();
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: Option<&i32> = Some(&2)
```
"#]],
);
}
#[test]
fn hover_const_eval_dyn_trait() {
check(
r#"
//- minicore: fmt, coerce_unsized, builtin_impls, dispatch_from_dyn
use core::fmt::Debug;
const FOO$0: &dyn Debug = &2i32;
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &dyn Debug = &2
```
"#]],
);
}
#[test]
fn hover_const_eval_slice() {
check(
r#"
//- minicore: slice, index, coerce_unsized
const FOO$0: &[i32] = &[1, 2, 3 + 4];
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &[i32] = &[1, 2, 7]
```
"#]],
);
check(
r#"
//- minicore: slice, index, coerce_unsized
const FOO$0: &[i32; 5] = &[12; 5];
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &[i32; {const}] = &[12, 12, 12, 12, 12]
```
"#]],
);
check(
r#"
//- minicore: slice, index, coerce_unsized
const FOO$0: (&i32, &[i32], &i32) = {
let a: &[i32] = &[1, 2, 3];
(&a[0], a, &a[0])
}
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: (&i32, &[i32], &i32) = (&1, &[1, 2, 3], &1)
```
"#]],
);
check(
r#"
//- minicore: slice, index, coerce_unsized
struct Tree(&[Tree]);
const FOO$0: Tree = {
let x = &[Tree(&[]), Tree(&[Tree(&[])])];
Tree(&[Tree(x), Tree(x)])
}
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: Tree = Tree(&[Tree(&[Tree(&[]), Tree(&[Tree(&[])])]), Tree(&[Tree(&[]), Tree(&[Tree(&[])])])])
```
"#]],
);
// FIXME: Show the data of unsized structs
check(
r#"
//- minicore: slice, index, coerce_unsized, transmute
#[repr(transparent)]
struct S<T: ?Sized>(T);
const FOO$0: &S<[u8]> = core::mem::transmute::<&[u8], _>(&[1, 2, 3]);
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &S<[u8]> = &S
```
"#]],
);
}
#[test]
fn hover_const_eval_str() {
check(
r#"
const FOO$0: &str = "foo";
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: &str = "foo"
```
"#]],
);
check(
r#"
struct X {
a: &'static str,
b: &'static str,
}
const FOO$0: X = X {
a: "axiom",
b: "buy N large",
};
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: X = X { a: "axiom", b: "buy N large" }
```
"#]],
);
check(
r#"
const FOO$0: (&str, &str) = {
let x = "foo";
(x, x)
};
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: (&str, &str) = ("foo", "foo")
```
"#]],
);
}
#[test]
fn hover_const_eval_in_generic_trait() {
// Doesn't compile, but we shouldn't crash.
check(
r#"
trait Trait<T> {
const FOO: bool = false;
}
struct S<T>(T);
impl<T> Trait<T> for S<T> {
const FOO: bool = true;
}
fn test() {
S::FOO$0;
}
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture::S
```
```rust
const FOO: bool = true
```
"#]],
);
}
#[test]
fn hover_const_pat() {
check(
r#"
/// This is a doc
const FOO: usize = 3;
fn foo() {
match 5 {
FOO$0 => (),
_ => ()
}
}
"#,
expect![[r#"
*FOO*
```rust
ra_test_fixture
```
```rust
const FOO: usize = 3
```
---
This is a doc
"#]],
);
check(
r#"
enum E {
/// This is a doc
A = 3,
}
fn foo(e: E) {
match e {
E::A$0 => (),
_ => ()
}
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::E
```
```rust
A = 3
```
---
This is a doc
"#]],
);
}
#[test]
fn hover_const_value() {
check(
r#"
pub enum AA {
BB,
}
const CONST: AA = AA::BB;
pub fn the_function() -> AA {
CON$0ST
}
"#,
expect![[r#"
*CONST*
```rust
ra_test_fixture
```
```rust
const CONST: AA = BB
```
"#]],
);
}
#[test]
fn array_repeat_exp() {
check(
r#"
fn main() {
let til$0e4 = [0_u32; (4 * 8 * 8) / 32];
}
"#,
expect![[r#"
*tile4*
```rust
let tile4: [u32; 8]
```
---
size = 32 (0x20), align = 4, no Drop
"#]],
);
}
#[test]
fn hover_mod_def() {
check(
r#"
//- /main.rs
mod foo$0;
//- /foo.rs
//! For the horde!
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
mod foo
```
---
For the horde!
"#]],
);
}
#[test]
fn hover_self_in_use() {
check(
r#"
//! This should not appear
mod foo {
/// But this should appear
pub mod bar {}
}
use foo::bar::{self$0};
"#,
expect![[r#"
*self*
```rust
ra_test_fixture::foo
```
```rust
pub mod bar
```
---
But this should appear
"#]],
)
}
#[test]
fn hover_keyword() {
check(
r#"
//- /main.rs crate:main deps:std
fn f() { retur$0n; }
//- /libstd.rs crate:std
/// Docs for return_keyword
mod return_keyword {}
"#,
expect![[r#"
*return*
```rust
return
```
---
Docs for return_keyword
"#]],
);
}
#[test]
fn hover_keyword_doc() {
check(
r#"
//- /main.rs crate:main deps:std
fn foo() {
let bar = mov$0e || {};
}
//- /libstd.rs crate:std
#[doc(keyword = "move")]
/// [closure]
/// [closures][closure]
/// [threads]
/// <https://doc.rust-lang.org/nightly/book/ch13-01-closures.html>
///
/// [closure]: ../book/ch13-01-closures.html
/// [threads]: ../book/ch16-01-threads.html#using-move-closures-with-threads
mod move_keyword {}
"#,
expect![[r#"
*move*
```rust
move
```
---
[closure](https://doc.rust-lang.org/stable/book/ch13-01-closures.html)
[closures](https://doc.rust-lang.org/stable/book/ch13-01-closures.html)
[threads](https://doc.rust-lang.org/stable/book/ch16-01-threads.html#using-move-closures-with-threads)
<https://doc.rust-lang.org/nightly/book/ch13-01-closures.html>
"#]],
);
}
#[test]
fn hover_keyword_as_primitive() {
check(
r#"
//- /main.rs crate:main deps:std
type F = f$0n(i32) -> i32;
//- /libstd.rs crate:std
/// Docs for prim_fn
mod prim_fn {}
"#,
expect![[r#"
*fn*
```rust
fn
```
---
Docs for prim_fn
"#]],
);
}
#[test]
fn hover_builtin() {
check(
r#"
//- /main.rs crate:main deps:std
const _: &str$0 = ""; }
//- /libstd.rs crate:std
/// Docs for prim_str
/// [`foo`](../std/keyword.foo.html)
mod prim_str {}
"#,
expect![[r#"
*str*
```rust
str
```
---
Docs for prim_str
[`foo`](https://doc.rust-lang.org/nightly/std/keyword.foo.html)
"#]],
);
}
#[test]
fn hover_macro_expanded_function() {
check(
r#"
struct S<'a, T>(&'a T);
trait Clone {}
macro_rules! foo {
() => {
fn bar<'t, T: Clone + 't>(s: &mut S<'t, T>, t: u32) -> *mut u32 where
't: 't + 't,
for<'a> T: Clone + 'a
{ 0 as _ }
};
}
foo!();
fn main() {
bar$0;
}
"#,
expect![[r#"
*bar*
```rust
ra_test_fixture
```
```rust
fn bar<'t, T>(s: &mut S<'t, T>, t: u32) -> *mut u32
where
T: Clone + 't,
't: 't + 't,
for<'a> T: Clone + 'a,
```
"#]],
)
}
#[test]
fn hover_intra_doc_links() {
check(
r#"
pub mod theitem {
/// This is the item. Cool!
pub struct TheItem;
}
/// Gives you a [`TheItem$0`].
///
/// [`TheItem`]: theitem::TheItem
pub fn gimme() -> theitem::TheItem {
theitem::TheItem
}
"#,
expect![[r#"
*[`TheItem`]*
```rust
ra_test_fixture::theitem
```
```rust
pub struct TheItem
```
---
This is the item. Cool!
"#]],
);
}
#[test]
fn test_hover_trait_assoc_typealias() {
check(
r#"
fn main() {}
trait T1 {
type Bar;
type Baz;
}
struct Foo;
mod t2 {
pub trait T2 {
type Bar;
}
}
use t2::T2;
impl T2 for Foo {
type Bar = String;
}
impl T1 for Foo {
type Bar = <Foo as t2::T2>::Ba$0r;
// ^^^ unresolvedReference
}
"#,
expect![[r#"
*Bar*
```rust
ra_test_fixture::t2::T2
```
```rust
pub type Bar
```
"#]],
);
}
#[test]
fn hover_generic_assoc() {
check(
r#"
fn foo<T: A>() where T::Assoc$0: {}
trait A {
type Assoc;
}"#,
expect![[r#"
*Assoc*
```rust
ra_test_fixture::A
```
```rust
type Assoc
```
"#]],
);
check(
r#"
fn foo<T: A>() {
let _: <T>::Assoc$0;
}
trait A {
type Assoc;
}"#,
expect![[r#"
*Assoc*
```rust
ra_test_fixture::A
```
```rust
type Assoc
```
"#]],
);
check(
r#"
trait A where
Self::Assoc$0: ,
{
type Assoc;
}"#,
expect![[r#"
*Assoc*
```rust
ra_test_fixture::A
```
```rust
type Assoc
```
"#]],
);
}
#[test]
fn string_shadowed_with_inner_items() {
check(
r#"
//- /main.rs crate:main deps:alloc
/// Custom `String` type.
struct String;
fn f() {
let _: String$0;
fn inner() {}
}
//- /alloc.rs crate:alloc
#[prelude_import]
pub use string::*;
mod string {
/// This is `alloc::String`.
pub struct String;
}
"#,
expect![[r#"
*String*
```rust
main
```
```rust
struct String
```
---
Custom `String` type.
"#]],
)
}
#[test]
fn function_doesnt_shadow_crate_in_use_tree() {
check(
r#"
//- /main.rs crate:main deps:foo
use foo$0::{foo};
//- /foo.rs crate:foo
pub fn foo() {}
"#,
expect![[r#"
*foo*
```rust
extern crate foo
```
"#]],
)
}
#[test]
fn hover_feature() {
let (analysis, position) = fixture::position(r#"#![feature(intrinsics$0)]"#);
analysis
.hover(
&HoverConfig { links_in_hover: true, ..HOVER_BASE_CONFIG },
FileRange { file_id: position.file_id, range: TextRange::empty(position.offset) },
)
.unwrap()
.unwrap();
}
#[test]
fn hover_lint() {
check(
r#"#![allow(arithmetic_overflow$0)]"#,
expect![[r#"
*arithmetic_overflow*
```
arithmetic_overflow
```
___
arithmetic operation overflows
"#]],
);
check(
r#"#![expect(arithmetic_overflow$0)]"#,
expect![[r#"
*arithmetic_overflow*
```
arithmetic_overflow
```
___
arithmetic operation overflows
"#]],
);
}
#[test]
fn hover_clippy_lint() {
check(
r#"#![allow(clippy::almost_swapped$0)]"#,
expect![[r#"
*almost_swapped*
```
clippy::almost_swapped
```
___
Checks for `foo = bar; bar = foo` sequences.
"#]],
);
check(
r#"#![expect(clippy::almost_swapped$0)]"#,
expect![[r#"
*almost_swapped*
```
clippy::almost_swapped
```
___
Checks for `foo = bar; bar = foo` sequences.
"#]],
);
}
#[test]
fn hover_attr_path_qualifier() {
check(
r#"
//- /foo.rs crate:foo
//- /lib.rs crate:main.rs deps:foo
#[fo$0o::bar()]
struct Foo;
"#,
expect![[r#"
*foo*
```rust
extern crate foo
```
"#]],
)
}
#[test]
fn hover_rename() {
check(
r#"
use self as foo$0;
"#,
expect![[r#"
*foo*
```rust
extern crate ra_test_fixture
```
"#]],
);
check(
r#"
mod bar {}
use bar::{self as foo$0};
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
mod bar
```
"#]],
);
check(
r#"
mod bar {
use super as foo$0;
}
"#,
expect![[r#"
*foo*
```rust
extern crate ra_test_fixture
```
"#]],
);
check(
r#"
use crate as foo$0;
"#,
expect![[r#"
*foo*
```rust
extern crate ra_test_fixture
```
"#]],
);
}
#[test]
fn hover_attribute_in_macro() {
check(
r#"
//- minicore:derive
macro_rules! identity {
($struct:item) => {
$struct
};
}
#[rustc_builtin_macro]
pub macro Copy {}
identity!{
#[derive(Copy$0)]
struct Foo;
}
"#,
expect![[r#"
*Copy*
```rust
ra_test_fixture
```
```rust
macro Copy
```
"#]],
);
}
#[test]
fn hover_derive_input() {
check(
r#"
//- minicore:derive
#[rustc_builtin_macro]
pub macro Copy {}
#[derive(Copy$0)]
struct Foo;
"#,
expect![[r#"
*Copy*
```rust
ra_test_fixture
```
```rust
macro Copy
```
"#]],
);
check(
r#"
//- minicore:derive
mod foo {
#[rustc_builtin_macro]
pub macro Copy {}
}
#[derive(foo::Copy$0)]
struct Foo;
"#,
expect![[r#"
*Copy*
```rust
ra_test_fixture::foo
```
```rust
macro Copy
```
"#]],
);
}
#[test]
fn hover_range_math() {
check_hover_range(
r#"
fn f() { let expr = $01 + 2 * 3$0 }
"#,
expect![[r#"
```rust
i32
```"#]],
);
check_hover_range(
r#"
fn f() { let expr = 1 $0+ 2 * $03 }
"#,
expect![[r#"
```rust
i32
```"#]],
);
check_hover_range(
r#"
fn f() { let expr = 1 + $02 * 3$0 }
"#,
expect![[r#"
```rust
i32
```"#]],
);
}
#[test]
fn hover_range_arrays() {
check_hover_range(
r#"
fn f() { let expr = $0[1, 2, 3, 4]$0 }
"#,
expect![[r#"
```rust
[i32; 4]
```"#]],
);
check_hover_range(
r#"
fn f() { let expr = [1, 2, $03, 4]$0 }
"#,
expect![[r#"
```rust
[i32; 4]
```"#]],
);
check_hover_range(
r#"
fn f() { let expr = [1, 2, $03$0, 4] }
"#,
expect![[r#"
```rust
i32
```"#]],
);
}
#[test]
fn hover_range_functions() {
check_hover_range(
r#"
fn f<T>(a: &[T]) { }
fn b() { $0f$0(&[1, 2, 3, 4, 5]); }
"#,
expect![[r#"
```rust
fn f<i32>(&[i32])
```"#]],
);
check_hover_range(
r#"
fn f<T>(a: &[T]) { }
fn b() { f($0&[1, 2, 3, 4, 5]$0); }
"#,
expect![[r#"
```rust
&[i32; 5]
```"#]],
);
}
#[test]
fn hover_range_shows_nothing_when_invalid() {
check_hover_range_no_results(
r#"
fn f<T>(a: &[T]) { }
fn b()$0 { f(&[1, 2, 3, 4, 5]); }$0
"#,
);
check_hover_range_no_results(
r#"
fn f<T>$0(a: &[T]) { }
fn b() { f(&[1, 2, 3,$0 4, 5]); }
"#,
);
check_hover_range_no_results(
r#"
fn $0f() { let expr = [1, 2, 3, 4]$0 }
"#,
);
}
#[test]
fn hover_range_shows_unit_for_statements() {
check_hover_range(
r#"
fn f<T>(a: &[T]) { }
fn b() { $0f(&[1, 2, 3, 4, 5]); }$0
"#,
expect![[r#"
```rust
()
```"#]],
);
check_hover_range(
r#"
fn f() { let expr$0 = $0[1, 2, 3, 4] }
"#,
expect![[r#"
```rust
()
```"#]],
);
}
#[test]
fn hover_range_for_pat() {
check_hover_range(
r#"
fn foo() {
let $0x$0 = 0;
}
"#,
expect![[r#"
```rust
i32
```"#]],
);
check_hover_range(
r#"
fn foo() {
let $0x$0 = "";
}
"#,
expect![[r#"
```rust
&'static str
```"#]],
);
}
#[test]
fn hover_range_shows_coercions_if_applicable_expr() {
check_hover_range(
r#"
fn foo() {
let x: &u32 = $0&&&&&0$0;
}
"#,
expect![[r#"
```text
Type: &&&&&u32
Coerced to: &u32
```
"#]],
);
check_hover_range(
r#"
fn foo() {
let x: *const u32 = $0&0$0;
}
"#,
expect![[r#"
```text
Type: &u32
Coerced to: *const u32
```
"#]],
);
}
#[test]
fn hover_range_shows_type_actions() {
check_actions(
r#"
struct Foo;
fn foo() {
let x: &Foo = $0&&&&&Foo$0;
}
"#,
expect![[r#"
[
GoToType(
[
HoverGotoTypeData {
mod_path: "ra_test_fixture::Foo",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..11,
focus_range: 7..10,
name: "Foo",
kind: Struct,
description: "struct Foo",
},
},
],
),
]
"#]],
);
}
#[test]
fn hover_try_expr_res() {
check_hover_range(
r#"
//- minicore: try, from, result
struct FooError;
fn foo() -> Result<(), FooError> {
Ok($0Result::<(), FooError>::Ok(())?$0)
}
"#,
expect![[r#"
```rust
()
```"#]],
);
check_hover_range(
r#"
//- minicore: try, from, result
struct FooError;
struct BarError;
fn foo() -> Result<(), FooError> {
Ok($0Result::<(), BarError>::Ok(())?$0)
}
"#,
expect![[r#"
```text
Try Error Type: BarError
Propagated as: FooError
```
"#]],
);
}
#[test]
fn hover_try_expr() {
check_hover_range(
r#"
//- minicore: try
struct NotResult<T, U>(T, U);
struct Short;
struct Looooong;
fn foo() -> NotResult<(), Looooong> {
$0NotResult((), Short)?$0;
}
"#,
expect![[r#"
```text
Try Target Type: NotResult<(), Short>
Propagated as: NotResult<(), Looooong>
```
"#]],
);
check_hover_range(
r#"
//- minicore: try
struct NotResult<T, U>(T, U);
struct Short;
struct Looooong;
fn foo() -> NotResult<(), Short> {
$0NotResult((), Looooong)?$0;
}
"#,
expect![[r#"
```text
Try Target Type: NotResult<(), Looooong>
Propagated as: NotResult<(), Short>
```
"#]],
);
}
#[test]
fn hover_try_expr_option() {
cov_mark::check!(hover_try_expr_opt_opt);
check_hover_range(
r#"
//- minicore: option, try
fn foo() -> Option<()> {
$0Some(0)?$0;
None
}
"#,
expect![[r#"
```rust
i32
```"#]],
);
}
#[test]
fn hover_deref_expr() {
check_hover_range(
r#"
//- minicore: deref
use core::ops::Deref;
struct DerefExample<T> {
value: T
}
impl<T> Deref for DerefExample<T> {
type Target = T;
fn deref(&self) -> &Self::Target {
&self.value
}
}
fn foo() {
let x = DerefExample { value: 0 };
let y: i32 = $0*x$0;
}
"#,
expect![[r#"
```text
Dereferenced from: DerefExample<i32>
To type: i32
```
"#]],
);
}
#[test]
fn hover_deref_expr_with_coercion() {
check_hover_range(
r#"
//- minicore: deref
use core::ops::Deref;
struct DerefExample<T> {
value: T
}
impl<T> Deref for DerefExample<T> {
type Target = T;
fn deref(&self) -> &Self::Target {
&self.value
}
}
fn foo() {
let x = DerefExample { value: &&&&&0 };
let y: &i32 = $0*x$0;
}
"#,
expect![[r#"
```text
Dereferenced from: DerefExample<&&&&&i32>
To type: &&&&&i32
Coerced to: &i32
```
"#]],
);
}
#[test]
fn hover_intra_in_macro() {
check(
r#"
macro_rules! foo_macro {
($(#[$attr:meta])* $name:ident) => {
$(#[$attr])*
pub struct $name;
}
}
foo_macro!(
/// Doc comment for [`Foo$0`]
Foo
);
"#,
expect![[r#"
*[`Foo`]*
```rust
ra_test_fixture
```
```rust
pub struct Foo
```
---
Doc comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/struct.Foo.html)
"#]],
);
}
#[test]
fn hover_intra_in_attr() {
check(
r#"
#[doc = "Doc comment for [`Foo$0`]"]
pub struct Foo(i32);
"#,
expect![[r#"
*[`Foo`]*
```rust
ra_test_fixture
```
```rust
pub struct Foo(i32)
```
---
Doc comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/struct.Foo.html)
"#]],
);
}
#[test]
fn hover_intra_inner_attr() {
check(
r#"
/// outer comment for [`Foo`]
#[doc = "Doc outer comment for [`Foo`]"]
pub fn Foo {
//! inner comment for [`Foo$0`]
#![doc = "Doc inner comment for [`Foo`]"]
}
"#,
expect![[r#"
*[`Foo`]*
```rust
ra_test_fixture
```
```rust
pub fn Foo()
```
---
outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
Doc outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
inner comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
Doc inner comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
"#]],
);
check(
r#"
/// outer comment for [`Foo`]
#[doc = "Doc outer comment for [`Foo`]"]
pub mod Foo {
//! inner comment for [`super::Foo$0`]
#![doc = "Doc inner comment for [`super::Foo`]"]
}
"#,
expect![[r#"
*[`super::Foo`]*
```rust
ra_test_fixture
```
```rust
pub mod Foo
```
---
outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
Doc outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
inner comment for [`super::Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
Doc inner comment for [`super::Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
"#]],
);
}
#[test]
fn hover_intra_outer_attr() {
check(
r#"
/// outer comment for [`Foo$0`]
#[doc = "Doc outer comment for [`Foo`]"]
pub fn Foo() {
//! inner comment for [`Foo`]
#![doc = "Doc inner comment for [`Foo`]"]
}
"#,
expect![[r#"
*[`Foo`]*
```rust
ra_test_fixture
```
```rust
pub fn Foo()
```
---
outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
Doc outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
inner comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
Doc inner comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/fn.Foo.html)
"#]],
);
check(
r#"
/// outer comment for [`Foo$0`]
#[doc = "Doc outer comment for [`Foo`]"]
pub mod Foo {
//! inner comment for [`super::Foo`]
#![doc = "Doc inner comment for [`super::Foo`]"]
}
"#,
expect![[r#"
*[`Foo`]*
```rust
ra_test_fixture
```
```rust
pub mod Foo
```
---
outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
Doc outer comment for [`Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
inner comment for [`super::Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
Doc inner comment for [`super::Foo`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/Foo/index.html)
"#]],
);
}
#[test]
fn hover_intra_generics() {
check(
r#"
/// Doc comment for [`Foo$0<T>`]
pub struct Foo<T>(T);
"#,
expect![[r#"
*[`Foo<T>`]*
```rust
ra_test_fixture
```
```rust
pub struct Foo<T>(T)
```
---
Doc comment for [`Foo<T>`](https://docs.rs/ra_test_fixture/*/ra_test_fixture/struct.Foo.html)
"#]],
);
}
#[test]
fn hover_inert_attr() {
check(
r#"
#[doc$0 = ""]
pub struct Foo;
"#,
expect![[r##"
*doc*
```rust
#[doc]
```
---
Valid forms are:
* \#\[doc(hidden|inline|...)\]
* \#\[doc = string\]
"##]],
);
check(
r#"
#[allow$0()]
pub struct Foo;
"#,
expect![[r##"
*allow*
```rust
#[allow]
```
---
Valid forms are:
* \#\[allow(lint1, lint2, ..., /\*opt\*/ reason = "...")\]
"##]],
);
}
#[test]
fn hover_dollar_crate() {
// $crate should be resolved to the right crate name.
check(
r#"
//- /main.rs crate:main deps:dep
dep::m!(KONST$0);
//- /dep.rs crate:dep
#[macro_export]
macro_rules! m {
( $name:ident ) => { const $name: $crate::Type = $crate::Type; };
}
pub struct Type;
"#,
expect![[r#"
*KONST*
```rust
main
```
```rust
const KONST: dep::Type = Type
```
"#]],
);
}
#[test]
fn hover_record_variant() {
check(
r#"
enum Enum {
RecordV$0 { field: u32 }
}
"#,
expect![[r#"
*RecordV*
```rust
ra_test_fixture::Enum
```
```rust
RecordV { field: u32, }
```
---
size = 4, align = 4, no Drop
"#]],
);
}
#[test]
fn hover_record_variant_field() {
check(
r#"
enum Enum {
RecordV { field$0: u32 }
}
"#,
expect![[r#"
*field*
```rust
ra_test_fixture::Enum::RecordV
```
```rust
field: u32
```
---
size = 4, align = 4, no Drop
"#]],
);
}
#[test]
fn hover_trait_impl_assoc_item_def_doc_forwarding() {
check(
r#"
trait T {
/// Trait docs
fn func() {}
}
impl T for () {
fn func$0() {}
}
"#,
expect![[r#"
*func*
```rust
ra_test_fixture
```
```rust
fn func()
```
---
Trait docs
"#]],
);
}
#[test]
fn hover_trait_show_assoc_items() {
check_assoc_count(
0,
r#"
trait T {}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T {}
```
"#]],
);
check_assoc_count(
1,
r#"
trait T {}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T {}
```
"#]],
);
check_assoc_count(
0,
r#"
trait T {
fn func() {}
const FLAG: i32 = 34;
type Bar;
}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T { /* … */ }
```
"#]],
);
check_assoc_count(
2,
r#"
trait T {
fn func() {}
const FLAG: i32 = 34;
type Bar;
}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T {
fn func();
const FLAG: i32;
/* … */
}
```
"#]],
);
check_assoc_count(
3,
r#"
trait T {
fn func() {}
const FLAG: i32 = 34;
type Bar;
}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T {
fn func();
const FLAG: i32;
type Bar;
}
```
"#]],
);
check_assoc_count(
4,
r#"
trait T {
fn func() {}
const FLAG: i32 = 34;
type Bar;
}
impl T$0 for () {}
"#,
expect![[r#"
*T*
```rust
ra_test_fixture
```
```rust
trait T {
fn func();
const FLAG: i32;
type Bar;
}
```
"#]],
);
}
#[test]
fn hover_ranged_macro_call() {
check_hover_range(
r#"
macro_rules! __rust_force_expr {
($e:expr) => {
$e
};
}
macro_rules! vec {
($elem:expr) => {
__rust_force_expr!($elem)
};
}
struct Struct;
impl Struct {
fn foo(self) {}
}
fn f() {
$0vec![Struct]$0;
}
"#,
expect![[r#"
```rust
Struct
```"#]],
);
}
#[test]
fn hover_deref() {
check(
r#"
//- minicore: deref
struct Struct(usize);
impl core::ops::Deref for Struct {
type Target = usize;
fn deref(&self) -> &Self::Target {
&self.0
}
}
fn f() {
$0*Struct(0);
}
"#,
expect![[r#"
***
```rust
ra_test_fixture::Struct
```
```rust
fn deref(&self) -> &Self::Target
```
"#]],
);
}
#[test]
fn static_const_macro_expanded_body() {
check(
r#"
macro_rules! m {
() => {
pub const V: i8 = {
let e = 123;
f(e) // Prevent const eval from evaluating this constant, we want to print the body's code.
};
};
}
m!();
fn main() { $0V; }
"#,
expect![[r#"
*V*
```rust
ra_test_fixture
```
```rust
pub const V: i8 = {
let e = 123;
f(e)
}
```
"#]],
);
check(
r#"
macro_rules! m {
() => {
pub static V: i8 = {
let e = 123;
};
};
}
m!();
fn main() { $0V; }
"#,
expect![[r#"
*V*
```rust
ra_test_fixture
```
```rust
pub static V: i8 = {
let e = 123;
}
```
"#]],
);
}
#[test]
fn hover_rest_pat() {
check(
r#"
struct Struct {a: u32, b: u32, c: u8, d: u16};
fn main() {
let Struct {a, c, .$0.} = Struct {a: 1, b: 2, c: 3, d: 4};
}
"#,
expect![[r#"
*..*
```rust
.., b: u32, d: u16
```
"#]],
);
check(
r#"
struct Struct {a: u32, b: u32, c: u8, d: u16};
fn main() {
let Struct {a, b, c, d, .$0.} = Struct {a: 1, b: 2, c: 3, d: 4};
}
"#,
expect![[r#"
*..*
```rust
..
```
"#]],
);
}
#[test]
fn hover_underscore_pat() {
check(
r#"
fn main() {
let _$0 = 0;
}
"#,
expect![[r#"
*_*
```rust
i32
```
"#]],
);
check(
r#"
fn main() {
let (_$0,) = (0,);
}
"#,
expect![[r#"
*_*
```rust
i32
```
"#]],
);
}
#[test]
fn hover_underscore_expr() {
check(
r#"
fn main() {
_$0 = 0;
}
"#,
expect![[r#"
*_*
```rust
i32
```
"#]],
);
check(
r#"
fn main() {
(_$0,) = (0,);
}
"#,
expect![[r#"
*_*
```rust
i32
```
"#]],
);
}
#[test]
fn hover_underscore_type() {
check_hover_no_result(
r#"
fn main() {
let x: _$0 = 0;
}
"#,
);
check_hover_no_result(
r#"
fn main() {
let x: (_$0,) = (0,);
}
"#,
);
}
#[test]
fn hover_call_parens() {
check(
r#"
fn foo() -> i32 {}
fn main() {
foo($0);
}
"#,
expect![[r#"
*)*
```rust
i32
```
"#]],
);
check(
r#"
struct S;
impl S {
fn foo(self) -> i32 {}
}
fn main() {
S.foo($0);
}
"#,
expect![[r#"
*)*
```rust
i32
```
"#]],
);
}
#[test]
fn assoc_fn_in_block_local_impl() {
check(
r#"
struct S;
mod m {
const _: () = {
impl crate::S {
pub(crate) fn foo() {}
}
};
}
fn test() {
S::foo$0();
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::m::S
```
```rust
pub(crate) fn foo()
```
"#]],
);
check(
r#"
struct S;
mod m {
const _: () = {
const _: () = {
impl crate::S {
pub(crate) fn foo() {}
}
};
};
}
fn test() {
S::foo$0();
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::m::S
```
```rust
pub(crate) fn foo()
```
"#]],
);
check(
r#"
struct S;
mod m {
mod inner {
const _: () = {
impl crate::S {
pub(super) fn foo() {}
}
};
}
fn test() {
crate::S::foo$0();
}
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::m::inner::S
```
```rust
pub(super) fn foo()
```
"#]],
);
}
#[test]
fn assoc_const_in_block_local_impl() {
check(
r#"
struct S;
mod m {
const _: () = {
impl crate::S {
pub(crate) const A: () = ();
}
};
}
fn test() {
S::A$0;
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::m::S
```
```rust
pub(crate) const A: () = ()
```
"#]],
);
check(
r#"
struct S;
mod m {
const _: () = {
const _: () = {
impl crate::S {
pub(crate) const A: () = ();
}
};
};
}
fn test() {
S::A$0;
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::m::S
```
```rust
pub(crate) const A: () = ()
```
"#]],
);
check(
r#"
struct S;
mod m {
mod inner {
const _: () = {
impl crate::S {
pub(super) const A: () = ();
}
};
}
fn test() {
crate::S::A$0;
}
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::m::inner::S
```
```rust
pub(super) const A: () = ()
```
"#]],
);
}
#[test]
fn field_as_method_call_fallback() {
check(
r#"
struct S { f: u32 }
fn test() {
S { f: 0 }.f$0();
}
"#,
expect![[r#"
*f*
```rust
ra_test_fixture::S
```
```rust
f: u32
```
"#]],
);
}
#[test]
fn generic_params_disabled_by_cfg() {
check(
r#"
struct S<#[cfg(never)] T>;
fn test() {
let s$0: S = S;
}
"#,
expect![[r#"
*s*
```rust
let s: S
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn format_args_arg() {
check(
r#"
//- minicore: fmt
fn test() {
let foo = 0;
format_args!("{}", foo$0);
}
"#,
expect![[r#"
*foo*
```rust
let foo: i32
```
"#]],
);
}
#[test]
fn format_args_implicit() {
check(
r#"
//- minicore: fmt
fn test() {
let aaaaa = "foo";
format_args!("{aaaaa$0}");
}
"#,
expect![[r#"
*aaaaa*
```rust
let aaaaa: &'static str
```
"#]],
);
}
#[test]
fn format_args_implicit2() {
check(
r#"
//- minicore: fmt
fn test() {
let aaaaa = "foo";
format_args!("{$0aaaaa}");
}
"#,
expect![[r#"
*aaaaa*
```rust
let aaaaa: &'static str
```
"#]],
);
}
#[test]
fn format_args_implicit_raw() {
check(
r#"
//- minicore: fmt
fn test() {
let aaaaa = "foo";
format_args!(r"{$0aaaaa}");
}
"#,
expect![[r#"
*aaaaa*
```rust
let aaaaa: &'static str
```
"#]],
);
}
#[test]
fn format_args_implicit_nested() {
check(
r#"
//- minicore: fmt
macro_rules! foo {
($($tt:tt)*) => {
format_args!($($tt)*)
}
}
fn test() {
let aaaaa = "foo";
foo!(r"{$0aaaaa}");
}
"#,
expect![[r#"
*aaaaa*
```rust
let aaaaa: &'static str
```
"#]],
);
}
#[test]
fn method_call_without_parens() {
check(
r#"
struct S;
impl S {
fn foo<T>(&self, t: T) {}
}
fn main() {
S.foo$0;
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::S
```
```rust
fn foo<T>(&self, t: T)
```
"#]],
);
}
#[test]
fn string_literal() {
check(
r#"
fn main() {
$0"🦀\u{1f980}\\\x41";
}
"#,
expect![[r#"
*"🦀\u{1f980}\\\x41"*
```rust
&'static str
```
___
value of literal: ` 🦀🦀\A `
"#]],
);
check(
r#"
fn main() {
$0r"🦀\u{1f980}\\\x41";
}
"#,
expect![[r#"
*r"🦀\u{1f980}\\\x41"*
```rust
&'static str
```
___
value of literal: ` 🦀\u{1f980}\\\x41 `
"#]],
);
check(
r#"
fn main() {
$0r"🦀\u{1f980}\\\x41
fsdghs";
}
"#,
expect![[r#"
*r"🦀\u{1f980}\\\x41
fsdghs"*
```rust
&'static str
```
___
value of literal (truncated up to newline): ` 🦀\u{1f980}\\\x41 `
"#]],
);
}
#[test]
fn cstring_literal() {
check(
r#"
fn main() {
$0c"🦀\u{1f980}\\\x41";
}
"#,
expect![[r#"
*c"🦀\u{1f980}\\\x41"*
```rust
&'static {unknown}
```
___
value of literal: ` 🦀🦀\A `
"#]],
);
}
#[test]
fn rawstring_literal() {
check(
r#"
fn main() {
$0r"`[^`]*`";
}"#,
expect![[r#"
*r"`[^`]*`"*
```rust
&'static str
```
___
value of literal: ```` `[^`]*` ````
"#]],
);
check(
r#"
fn main() {
$0r"`";
}"#,
expect![[r#"
*r"`"*
```rust
&'static str
```
___
value of literal: `` ` ``
"#]],
);
check(
r#"
fn main() {
$0r" ";
}"#,
expect![[r#"
*r" "*
```rust
&'static str
```
___
value of literal: ` `
"#]],
);
check(
r#"
fn main() {
$0r" Hello World ";
}"#,
expect![[r#"
*r" Hello World "*
```rust
&'static str
```
___
value of literal: ` Hello World `
"#]],
)
}
#[test]
fn byte_string_literal() {
check(
r#"
fn main() {
$0b"\xF0\x9F\xA6\x80\\";
}
"#,
expect![[r#"
*b"\xF0\x9F\xA6\x80\\"*
```rust
&'static [u8; 5]
```
___
value of literal: ` [240, 159, 166, 128, 92] `
"#]],
);
check(
r#"
fn main() {
$0br"\xF0\x9F\xA6\x80\\";
}
"#,
expect![[r#"
*br"\xF0\x9F\xA6\x80\\"*
```rust
&'static [u8; 18]
```
___
value of literal: ` [92, 120, 70, 48, 92, 120, 57, 70, 92, 120, 65, 54, 92, 120, 56, 48, 92, 92] `
"#]],
);
}
#[test]
fn byte_literal() {
check(
r#"
fn main() {
$0b'\xF0';
}
"#,
expect![[r#"
*b'\xF0'*
```rust
u8
```
___
value of literal: ` 0xF0 `
"#]],
);
check(
r#"
fn main() {
$0b'\\';
}
"#,
expect![[r#"
*b'\\'*
```rust
u8
```
___
value of literal: ` 0x5C `
"#]],
);
}
#[test]
fn char_literal() {
check(
r#"
fn main() {
$0'\x41';
}
"#,
expect![[r#"
*'\x41'*
```rust
char
```
___
value of literal: ` A `
"#]],
);
check(
r#"
fn main() {
$0'\\';
}
"#,
expect![[r#"
*'\\'*
```rust
char
```
___
value of literal: ` \ `
"#]],
);
check(
r#"
fn main() {
$0'\u{1f980}';
}
"#,
expect![[r#"
*'\u{1f980}'*
```rust
char
```
___
value of literal: ` 🦀 `
"#]],
);
}
#[test]
fn float_literal() {
check(
r#"
fn main() {
$01.0;
}
"#,
expect![[r#"
*1.0*
```rust
f64
```
___
value of literal: ` 1 (bits: 0x3FF0000000000000) `
"#]],
);
check(
r#"
fn main() {
$01.0f16;
}
"#,
expect![[r#"
*1.0f16*
```rust
f16
```
___
value of literal: ` 1 (bits: 0x3C00) `
"#]],
);
check(
r#"
fn main() {
$01.0f32;
}
"#,
expect![[r#"
*1.0f32*
```rust
f32
```
___
value of literal: ` 1 (bits: 0x3F800000) `
"#]],
);
check(
r#"
fn main() {
$01.0f128;
}
"#,
expect![[r#"
*1.0f128*
```rust
f128
```
___
value of literal: ` 1 (bits: 0x3FFF0000000000000000000000000000) `
"#]],
);
check(
r#"
fn main() {
$0134e12;
}
"#,
expect![[r#"
*134e12*
```rust
f64
```
___
value of literal: ` 134000000000000 (bits: 0x42DE77D399980000) `
"#]],
);
check(
r#"
fn main() {
$01523527134274733643531312.0;
}
"#,
expect![[r#"
*1523527134274733643531312.0*
```rust
f64
```
___
value of literal: ` 1523527134274733600000000 (bits: 0x44F429E9249F629B) `
"#]],
);
check(
r#"
fn main() {
$00.1ea123;
}
"#,
expect![[r#"
*0.1ea123*
```rust
f64
```
___
invalid literal: invalid float literal
"#]],
);
}
#[test]
fn int_literal() {
check(
r#"
fn main() {
$034325236457856836345234;
}
"#,
expect![[r#"
*34325236457856836345234*
```rust
i32
```
___
value of literal: ` 34325236457856836345234 (0x744C659178614489D92|0b111010001001100011001011001000101111000011000010100010010001001110110010010) `
"#]],
);
check(
r#"
fn main() {
$0134_123424_21;
}
"#,
expect![[r#"
*134_123424_21*
```rust
i32
```
___
value of literal: ` 13412342421 (0x31F701A95|0b1100011111011100000001101010010101) `
"#]],
);
check(
r#"
fn main() {
$00x12423423;
}
"#,
expect![[r#"
*0x12423423*
```rust
i32
```
___
value of literal: ` 306328611 (0x12423423|0b10010010000100011010000100011) `
"#]],
);
check(
r#"
fn main() {
$00b1111_1111;
}
"#,
expect![[r#"
*0b1111_1111*
```rust
i32
```
___
value of literal: ` 255 (0xFF|0b11111111) `
"#]],
);
check(
r#"
fn main() {
$00o12345;
}
"#,
expect![[r#"
*0o12345*
```rust
i32
```
___
value of literal: ` 5349 (0x14E5|0b1010011100101) `
"#]],
);
check(
r#"
fn main() {
$00xFFFF_FFFF_FFFF_FFFF_FFFF_FFFF_FFFF_FFFF_F;
}
"#,
expect![[r#"
*0xFFFF_FFFF_FFFF_FFFF_FFFF_FFFF_FFFF_FFFF_F*
```rust
i32
```
___
invalid literal: number too large to fit in target type
"#]],
);
}
#[test]
fn notable_local() {
check(
r#"
#[doc(notable_trait)]
trait Notable {
type Assoc;
type Assoc2;
}
impl Notable for u32 {
type Assoc = &str;
type Assoc2 = char;
}
fn main(notable$0: u32) {}
"#,
expect![[r#"
*notable*
```rust
notable: u32
```
---
Implements notable traits: `Notable<Assoc = &str, Assoc2 = char>`
---
size = 4, align = 4, no Drop
"#]],
);
}
#[test]
fn notable_foreign() {
check(
r#"
//- minicore: future, iterator
struct S;
#[doc(notable_trait)]
trait Notable {}
impl Notable for S$0 {}
impl core::future::Future for S {
type Output = u32;
}
impl Iterator for S {
type Item = S;
}
"#,
expect![[r#"
*S*
```rust
ra_test_fixture
```
```rust
struct S
```
"#]],
);
}
#[test]
fn extern_items() {
check(
r#"
extern "C" {
static STATIC$0: ();
}
"#,
expect![[r#"
*STATIC*
```rust
ra_test_fixture::<extern>
```
```rust
static STATIC: ()
```
"#]],
);
check(
r#"
extern "C" {
fn fun$0();
}
"#,
expect![[r#"
*fun*
```rust
ra_test_fixture::<extern>
```
```rust
unsafe fn fun()
```
"#]],
);
check(
r#"
extern "C" {
type Ty$0;
}
"#,
expect![[r#"
*Ty*
```rust
ra_test_fixture::<extern>
```
```rust
type Ty
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn notable_ranged() {
check_hover_range(
r#"
//- minicore: future, iterator
struct S;
#[doc(notable_trait)]
trait Notable {}
impl Notable for S {}
impl core::future::Future for S {
type Output = u32;
}
impl Iterator for S {
type Item = S;
}
fn main() {
$0S$0;
}
"#,
expect![[r#"
```rust
S
```
___
Implements notable traits: `Future<Output = u32>`, `Iterator<Item = S>`, `Notable`"#]],
);
}
#[test]
fn notable_actions() {
check_actions(
r#"
//- minicore: future, iterator
struct S;
struct S2;
#[doc(notable_trait)]
trait Notable {}
impl Notable for S$0 {}
impl core::future::Future for S {
type Output = u32;
}
impl Iterator for S {
type Item = S2;
}
"#,
expect![[r#"
[
Implementation(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 7,
},
),
GoToType(
[
HoverGotoTypeData {
mod_path: "core::future::Future",
nav: NavigationTarget {
file_id: FileId(
1,
),
full_range: 4294967295..4294967295,
focus_range: 4294967295..4294967295,
name: "Future",
kind: Trait,
container_name: "future",
description: "pub trait Future",
},
},
HoverGotoTypeData {
mod_path: "core::iter::traits::iterator::Iterator",
nav: NavigationTarget {
file_id: FileId(
1,
),
full_range: 4294967295..4294967295,
focus_range: 4294967295..4294967295,
name: "Iterator",
kind: Trait,
container_name: "iterator",
description: "pub trait Iterator",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::Notable",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 21..59,
focus_range: 49..56,
name: "Notable",
kind: Trait,
description: "trait Notable",
},
},
HoverGotoTypeData {
mod_path: "ra_test_fixture::S2",
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 10..20,
focus_range: 17..19,
name: "S2",
kind: Struct,
description: "struct S2",
},
},
],
),
]
"#]],
);
}
#[test]
fn hover_lifetime_regression_16963() {
check(
r#"
struct Pedro$0<'a> {
hola: &'a str
}
"#,
expect![[r#"
*Pedro*
```rust
ra_test_fixture
```
```rust
struct Pedro<'a> {
hola: &'a str,
}
```
---
size = 16 (0x10), align = 8, largest padding = 0, niches = 1, no Drop
"#]],
)
}
#[test]
fn hover_impl_trait_arg_self() {
check(
r#"
trait T<Rhs = Self> {}
fn main(a$0: impl T) {}
"#,
expect![[r#"
*a*
```rust
a: impl T + ?Sized
```
---
type param may need Drop
"#]],
);
}
#[test]
fn hover_struct_default_arg_self() {
check(
r#"
struct T<Rhs = Self> {}
fn main(a$0: T) {}
"#,
expect![[r#"
*a*
```rust
a: T
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn hover_fn_with_impl_trait_arg() {
check(
r#"
trait Foo {}
impl Foo for bool {}
fn bar<const WIDTH: u8>(_: impl Foo) {}
fn test() {
let f = bar::<3>;
f$0(true);
}
"#,
expect![[r#"
*f*
```rust
let f: fn bar<3>(bool)
```
"#]],
);
}
#[test]
fn issue_17871() {
check(
r#"
trait T {
fn f<A>();
}
struct S {}
impl T for S {
fn f<A>() {}
}
fn main() {
let x$0 = S::f::<i32>;
}
"#,
expect![[r#"
*x*
```rust
let x: fn f<S, i32>()
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn raw_keyword_different_editions() {
check(
r#"
//- /lib1.rs crate:with_edition_2015 edition:2015
pub fn dyn() {}
//- /lib2.rs crate:with_edition_2018 edition:2018 deps:with_edition_2015 new_source_root:local
fn foo() {
with_edition_2015::r#dyn$0();
}
"#,
expect![[r#"
*r#dyn*
```rust
with_edition_2015
```
```rust
pub fn r#dyn()
```
"#]],
);
check(
r#"
//- /lib1.rs crate:with_edition_2018 edition:2018
pub fn r#dyn() {}
//- /lib2.rs crate:with_edition_2015 edition:2015 deps:with_edition_2018 new_source_root:local
fn foo() {
with_edition_2018::dyn$0();
}
"#,
expect![[r#"
*dyn*
```rust
with_edition_2018
```
```rust
pub fn dyn()
```
"#]],
);
check(
r#"
//- /lib1.rs crate:escaping_needlessly edition:2015
pub fn r#dyn() {}
//- /lib2.rs crate:dependent edition:2015 deps:escaping_needlessly new_source_root:local
fn foo() {
escaping_needlessly::dyn$0();
}
"#,
expect![[r#"
*dyn*
```rust
escaping_needlessly
```
```rust
pub fn dyn()
```
"#]],
);
}
#[test]
fn test_hover_function_with_pat_param() {
check(
r#"fn test_1$0((start_range, end_range): (u32, u32), a: i32) {}"#,
expect![[r#"
*test_1*
```rust
ra_test_fixture
```
```rust
fn test_1((start_range, end_range): (u32, u32), a: i32)
```
"#]],
);
// Test case with tuple pattern and mutable parameters
check(
r#"fn test_2$0((mut x, y): (i32, i32)) {}"#,
expect![[r#"
*test_2*
```rust
ra_test_fixture
```
```rust
fn test_2((mut x, y): (i32, i32))
```
"#]],
);
// Test case with a pattern in a reference type
check(
r#"fn test_3$0(&(a, b): &(i32, i32)) {}"#,
expect![[r#"
*test_3*
```rust
ra_test_fixture
```
```rust
fn test_3(&(a, b): &(i32, i32))
```
"#]],
);
// Test case with complex pattern (struct destructuring)
check(
r#"struct Point { x: i32, y: i32 } fn test_4$0(Point { x, y }: Point) {}"#,
expect![[r#"
*test_4*
```rust
ra_test_fixture
```
```rust
fn test_4(Point { x, y }: Point)
```
"#]],
);
// Test case with a nested pattern
check(
r#"fn test_5$0(((a, b), c): ((i32, i32), i32)) {}"#,
expect![[r#"
*test_5*
```rust
ra_test_fixture
```
```rust
fn test_5(((a, b), c): ((i32, i32), i32))
```
"#]],
);
// Test case with an unused variable in the pattern
check(
r#"fn test_6$0((_, y): (i32, i64)) {}"#,
expect![[r#"
*test_6*
```rust
ra_test_fixture
```
```rust
fn test_6((_, y): (i32, i64))
```
"#]],
);
// Test case with a complex pattern involving both tuple and struct
check(
r#"struct Foo { a: i32, b: i32 } fn test_7$0((x, Foo { a, b }): (i32, Foo)) {}"#,
expect![[r#"
*test_7*
```rust
ra_test_fixture
```
```rust
fn test_7((x, Foo { a, b }): (i32, Foo))
```
"#]],
);
// Test case with Enum and Or pattern
check(
r#"enum MyEnum { A(i32), B(i32) } fn test_8$0((MyEnum::A(x) | MyEnum::B(x)): MyEnum) {}"#,
expect![[r#"
*test_8*
```rust
ra_test_fixture
```
```rust
fn test_8((MyEnum::A(x) | MyEnum::B(x)): MyEnum)
```
"#]],
);
// Test case with a pattern as a function parameter
check(
r#"struct Foo { a: i32, b: i32 } fn test_9$0(Foo { a, b }: Foo) {}"#,
expect![[r#"
*test_9*
```rust
ra_test_fixture
```
```rust
fn test_9(Foo { a, b }: Foo)
```
"#]],
);
// Test case with a pattern as a function parameter with a different name
check(
r#"struct Foo { a: i32, b: i32 } fn test_10$0(Foo { a, b: b1 }: Foo) {}"#,
expect![[r#"
*test_10*
```rust
ra_test_fixture
```
```rust
fn test_10(Foo { a, b: b1 }: Foo)
```
"#]],
);
// Test case with a pattern as a function parameter with annotations
check(
r#"struct Foo { a: i32, b: i32 } fn test_10$0(Foo { a, b: mut b }: Foo) {}"#,
expect![[r#"
*test_10*
```rust
ra_test_fixture
```
```rust
fn test_10(Foo { a, b: mut b }: Foo)
```
"#]],
);
}
#[test]
fn hover_path_inside_block_scope() {
check(
r#"
mod m {
const _: () = {
mod m2 {
const C$0: () = ();
}
};
}
"#,
expect![[r#"
*C*
```rust
ra_test_fixture::m::m2
```
```rust
const C: () = ()
```
"#]],
);
}
#[test]
fn regression_18238() {
check(
r#"
macro_rules! foo {
($name:ident) => {
pub static $name = Foo::new(|| {
$crate;
});
};
}
foo!(BAR_$0);
"#,
expect![[r#"
*BAR_*
```rust
ra_test_fixture
```
```rust
pub static BAR_: {error} = Foo::new(||{
crate;
})
```
"#]],
);
}
#[test]
fn type_alias_without_docs() {
// Simple.
check(
r#"
/// Docs for B
struct B;
type A$0 = B;
"#,
expect![[r#"
*A*
```rust
ra_test_fixture
```
```rust
type A = B
```
---
size = 0, align = 1, no Drop
---
*This is the documentation for* `struct B`
Docs for B
"#]],
);
// Nested.
check(
r#"
/// Docs for C
struct C;
type B = C;
type A$0 = B;
"#,
expect![[r#"
*A*
```rust
ra_test_fixture
```
```rust
type A = B
```
---
size = 0, align = 1, no Drop
---
*This is the documentation for* `struct C`
Docs for C
"#]],
);
// Showing the docs for aliased struct instead of intermediate type.
check(
r#"
/// Docs for C
struct C;
/// Docs for B
type B = C;
type A$0 = B;
"#,
expect![[r#"
*A*
```rust
ra_test_fixture
```
```rust
type A = B
```
---
size = 0, align = 1, no Drop
---
*This is the documentation for* `struct C`
Docs for C
"#]],
);
// No docs found.
check(
r#"
struct C;
type B = C;
type A$0 = B;
"#,
expect![[r#"
*A*
```rust
ra_test_fixture
```
```rust
type A = B
```
---
size = 0, align = 1, no Drop
"#]],
);
// Multiple nested crate.
check(
r#"
//- /lib.rs crate:c
/// Docs for C
pub struct C;
//- /lib.rs crate:b deps:c
pub use c::C;
pub type B = C;
//- /lib.rs crate:a deps:b
pub use b::B;
pub type A = B;
//- /main.rs crate:main deps:a
use a::A$0;
"#,
expect![[r#"
*A*
```rust
a
```
```rust
pub type A = B
```
---
*This is the documentation for* `pub struct C`
Docs for C
"#]],
);
}
#[test]
fn dyn_compat() {
check(
r#"
trait Compat$0 {}
"#,
expect![[r#"
*Compat*
```rust
ra_test_fixture
```
```rust
trait Compat
```
---
Is dyn-compatible
"#]],
);
check(
r#"
trait UnCompat$0 {
fn f<T>() {}
}
"#,
expect![[r#"
*UnCompat*
```rust
ra_test_fixture
```
```rust
trait UnCompat
```
---
Is not dyn-compatible due to having a method `f` that is not dispatchable due to missing a receiver
"#]],
);
check(
r#"
trait UnCompat {
fn f<T>() {}
}
fn f<T: UnCompat$0>
"#,
expect![[r#"
*UnCompat*
```rust
ra_test_fixture
```
```rust
trait UnCompat
```
"#]],
);
}
#[test]
fn issue_18613() {
check(
r#"
fn main() {
struct S<T, D = bool>();
let x$0 = S::<()>;
}"#,
expect![[r#"
*x*
```rust
let x: fn S<()>() -> S<()>
```
---
size = 0, align = 1, no Drop
"#]],
);
check(
r#"
pub struct Global;
pub struct Box<T, A = Global>(T, A);
impl<T> Box<T> {
pub fn new(x: T) -> Self { loop {} }
}
pub struct String;
fn main() {
let box_value$0 = Box::<String>new();
}
"#,
expect![[r#"
*box_value*
```rust
let box_value: fn Box<String>(String, Global) -> Box<String>
```
---
size = 0, align = 1, no Drop
"#]],
);
check(
r#"
//- minicore: eq
pub struct RandomState;
pub struct HashMap<K, V, S = RandomState>(K, V, S);
impl<K, V> HashMap<K, V, RandomState> {
pub fn new() -> HashMap<K, V, RandomState> {
loop {}
}
}
impl<K, V, S> PartialEq for HashMap<K, V, S> {
fn eq(&self, other: &HashMap<K, V, S>) -> bool {
false
}
}
fn main() {
let s$0 = HashMap::<_, u64>::ne;
}
"#,
expect![[r#"
*s*
```rust
let s: fn ne<HashMap<{unknown}, u64>>(&HashMap<{unknown}, u64>, &HashMap<{unknown}, u64>) -> bool
```
---
size = 0, align = 1, no Drop
"#]],
);
}
#[test]
fn subst_fn() {
check(
r#"
struct Foo<T>(T);
impl<T> Foo<T> {
fn foo<U>(v: T, u: U) {}
}
fn bar() {
Foo::fo$0o(123, false);
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Foo
```
```rust
impl<T> Foo<T>
fn foo<U>(v: T, u: U)
```
---
`T` = `i32`, `U` = `bool`
"#]],
);
check(
r#"
fn foo<T>(v: T) {}
fn bar() {
fo$0o(123);
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture
```
```rust
fn foo<T>(v: T)
```
---
`T` = `i32`
"#]],
);
}
#[test]
fn subst_record_constructor() {
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = $0Foo { field: 123 };
}
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo<T> {
field: T,
}
```
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = Foo { field: 123 };
let $0Foo { field: _ } = v;
}
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo<T> {
field: T,
}
```
---
`T` = `i32`
"#]],
);
}
#[test]
fn subst_method_call() {
check(
r#"
struct Foo<T>(T);
impl<U> Foo<U> {
fn bar<T>(self, v: T) {}
}
fn baz() {
Foo(123).bar$0("hello");
}
"#,
expect![[r#"
*bar*
```rust
ra_test_fixture::Foo
```
```rust
impl<U> Foo<U>
fn bar<T>(self, v: T)
```
---
`U` = `i32`, `T` = `&'static str`
"#]],
);
}
#[test]
fn subst_type_alias_do_not_work() {
// It is very hard to support subst for type aliases properly in all places because they are eagerly evaluated.
// We can show the user the subst for the underlying type instead but that'll be very confusing.
check(
r#"
struct Foo<T, U> { a: T, b: U }
type Alias<T> = Foo<T, i32>;
fn foo() {
let _ = Alias$0 { a: true, b: 123 };
}
"#,
expect![[r#"
*Alias*
```rust
ra_test_fixture
```
```rust
type Alias<T> = Foo<T, i32>
```
"#]],
);
}
#[test]
fn subst_self() {
check(
r#"
trait Trait<T> {
fn foo<U>(&self, v: U) {}
}
struct Struct<T>(T);
impl<T> Trait<i64> for Struct<T> {}
fn bar() {
Struct(123).foo$0(true);
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Trait
```
```rust
trait Trait<T>
fn foo<U>(&self, v: U)
```
---
`Self` = `Struct<i32>`, `T` = `i64`, `U` = `bool`
"#]],
);
}
#[test]
fn subst_with_lifetimes_and_consts() {
check(
r#"
struct Foo<'a, const N: usize, T>(&[T; N]);
impl<'a, T, const N: usize> Foo<'a, N, T> {
fn foo<'b, const Z: u32, U>(&self, v: U) {}
}
fn bar() {
Foo(&[1i8]).fo$0o::<456, _>("");
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Foo
```
```rust
impl<'a, T, const N: usize> Foo<'a, N, T>
fn foo<'b, const Z: u32, U>(&self, v: U)
```
---
`T` = `i8`, `U` = `&'static str`
"#]],
);
}
#[test]
fn subst_field() {
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = Foo { $0field: 123 };
}
"#,
expect![[r#"
*field*
```rust
ra_test_fixture::Foo
```
```rust
field: T
```
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let field = 123;
let v = Foo { field$0 };
}
"#,
expect![[r#"
*field*
```rust
let field: i32
```
---
```rust
ra_test_fixture::Foo
```
```rust
field: T
```
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = Foo { field: 123 };
let Foo { field$0 } = v;
}
"#,
expect![[r#"
*field*
```rust
let field: i32
```
---
size = 4, align = 4, no Drop
---
```rust
ra_test_fixture::Foo
```
```rust
field: T
```
---
type param may need Drop
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = Foo { field: 123 };
let Foo { field$0: _ } = v;
}
"#,
expect![[r#"
*field*
```rust
ra_test_fixture::Foo
```
```rust
field: T
```
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T> { field: T }
fn bar() {
let v = Foo { field: 123 };
let _ = (&v).$0field;
}
"#,
expect![[r#"
*field*
```rust
ra_test_fixture::Foo
```
```rust
field: T
```
---
`T` = `i32`
"#]],
);
check(
r#"
struct Foo<T>(T);
fn bar() {
let v = Foo(123);
let _ = v.$00;
}
"#,
expect![[r#"
*0*
```rust
ra_test_fixture::Foo
```
```rust
0: T
```
---
`T` = `i32`
"#]],
);
}
#[test]
fn i128_max() {
check(
r#"
//- /core.rs library crate:core
#![rustc_coherence_is_core]
impl u128 {
pub const MAX: Self = 340_282_366_920_938_463_463_374_607_431_768_211_455u128;
}
impl i128 {
pub const MAX: Self = (u128::MAX >> 1) as Self;
}
//- /foo.rs crate:foo deps:core
fn foo() {
let _ = i128::MAX$0;
}
"#,
expect![
r#"
*MAX*
```rust
core
```
```rust
pub const MAX: Self = 170141183460469231731687303715884105727 (0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
```
"#
],
);
}
#[test]
fn test_runnables_with_snapshot_tests() {
check_actions(
r#"
//- /lib.rs crate:foo deps:expect_test,insta,snapbox
use expect_test::expect;
use insta::assert_debug_snapshot;
use snapbox::Assert;
#[test]
fn test$0() {
let actual = "new25";
expect!["new25"].assert_eq(&actual);
Assert::new()
.action_env("SNAPSHOTS")
.eq(actual, snapbox::str!["new25"]);
assert_debug_snapshot!(actual);
}
//- /lib.rs crate:expect_test
struct Expect;
impl Expect {
fn assert_eq(&self, actual: &str) {}
}
#[macro_export]
macro_rules! expect {
($e:expr) => Expect; // dummy
}
//- /lib.rs crate:insta
#[macro_export]
macro_rules! assert_debug_snapshot {
($e:expr) => {}; // dummy
}
//- /lib.rs crate:snapbox
pub struct Assert;
impl Assert {
pub fn new() -> Self { Assert }
pub fn action_env(&self, env: &str) -> &Self { self }
pub fn eq(&self, actual: &str, expected: &str) {}
}
#[macro_export]
macro_rules! str {
($e:expr) => ""; // dummy
}
"#,
expect![[r#"
[
Reference(
FilePositionWrapper {
file_id: FileId(
0,
),
offset: 92,
},
),
Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 81..301,
focus_range: 92..96,
name: "test",
kind: Function,
},
kind: Test {
test_id: Path(
"test",
),
attr: TestAttr {
ignore: false,
},
},
cfg: None,
update_test: UpdateTest {
expect_test: true,
insta: true,
snapbox: true,
},
},
),
]
"#]],
);
}
#[test]
fn drop_glue() {
check(
r#"
struct NoDrop$0;
"#,
expect![[r#"
*NoDrop*
```rust
ra_test_fixture
```
```rust
struct NoDrop
```
---
size = 0, align = 1, no Drop
"#]],
);
check(
r#"
//- minicore: drop
struct NeedsDrop$0;
impl Drop for NeedsDrop {
fn drop(&mut self) {}
}
"#,
expect![[r#"
*NeedsDrop*
```rust
ra_test_fixture
```
```rust
struct NeedsDrop
```
---
size = 0, align = 1, impl Drop
"#]],
);
check(
r#"
//- minicore: manually_drop, drop
struct NeedsDrop;
impl Drop for NeedsDrop {
fn drop(&mut self) {}
}
type NoDrop$0 = core::mem::ManuallyDrop<NeedsDrop>;
"#,
expect![[r#"
*NoDrop*
```rust
ra_test_fixture
```
```rust
type NoDrop = core::mem::ManuallyDrop<NeedsDrop>
```
---
size = 0, align = 1, no Drop
"#]],
);
check(
r#"
//- minicore: drop
struct NeedsDrop;
impl Drop for NeedsDrop {
fn drop(&mut self) {}
}
struct DropField$0 {
_x: i32,
_y: NeedsDrop,
}
"#,
expect![[r#"
*DropField*
```rust
ra_test_fixture
```
```rust
struct DropField {
_x: i32,
_y: NeedsDrop,
}
```
---
size = 4, align = 4, largest padding = 0, needs Drop
"#]],
);
check(
r#"
//- minicore: sized
type Foo$0 = impl Sized;
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
type Foo = impl Sized
```
---
needs Drop
"#]],
);
check(
r#"
//- minicore: drop
struct NeedsDrop;
impl Drop for NeedsDrop {
fn drop(&mut self) {}
}
enum Enum {
A$0(&'static str),
B(NeedsDrop)
}
"#,
expect![[r#"
*A*
```rust
ra_test_fixture::Enum
```
```rust
A(&'static str)
```
---
size = 16 (0x10), align = 8, niches = 1, no Drop
"#]],
);
check(
r#"
struct Foo$0<T>(T);
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo<T>(T)
```
---
type param may need Drop
"#]],
);
check(
r#"
//- minicore: copy
struct Foo$0<T: Copy>(T);
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo<T>(T)
where
T: Copy,
```
---
no Drop
"#]],
);
check(
r#"
//- minicore: copy
trait Trait {
type Assoc: Copy;
}
struct Foo$0<T: Trait>(T::Assoc);
"#,
expect![[r#"
*Foo*
```rust
ra_test_fixture
```
```rust
struct Foo<T>(<T as Trait>::Assoc)
where
T: Trait,
```
---
no Drop
"#]],
);
check(
r#"
#[rustc_coherence_is_core]
#[lang = "manually_drop"]
#[repr(transparent)]
pub struct ManuallyDrop$0<T: ?Sized> {
value: T,
}
"#,
expect![[r#"
*ManuallyDrop*
```rust
ra_test_fixture
```
```rust
pub struct ManuallyDrop<T>
where
T: ?Sized,
{
value: T,
}
```
---
no Drop
"#]],
);
}
#[test]
fn projection_const() {
// This uses two crates, which have *no* relation between them, to test another thing:
// `render_const_scalar()` used to just use the last crate for the trait env, which will
// fail in this scenario.
check(
r#"
//- /foo.rs crate:foo
pub trait PublicFlags {
type Internal;
}
pub struct NoteDialects(<NoteDialects as PublicFlags>::Internal);
impl NoteDialects {
pub const CLAP$0: Self = Self(InternalBitFlags);
}
pub struct InternalBitFlags;
impl PublicFlags for NoteDialects {
type Internal = InternalBitFlags;
}
//- /bar.rs crate:bar
"#,
expect![[r#"
*CLAP*
```rust
foo::NoteDialects
```
```rust
pub const CLAP: Self = NoteDialects(InternalBitFlags)
```
"#]],
);
}
#[test]
fn bounds_from_container_do_not_panic() {
check(
r#"
//- minicore: copy
struct Foo<T>(T);
impl<T: Copy> Foo<T> {
fn foo<U: Copy>(&self, _u: U) {}
}
fn bar(v: &Foo<i32>) {
v.$0foo(1u32);
}
"#,
expect![[r#"
*foo*
```rust
ra_test_fixture::Foo
```
```rust
impl<T> Foo<T>
fn foo<U>(&self, _u: U)
where
U: Copy,
// Bounds from impl:
T: Copy,
```
---
`T` = `i32`, `U` = `u32`
"#]],
);
}
#[test]
fn extra_lifetime_param_on_trait_method_subst() {
check(
r#"
struct AudioFormat;
trait ValueEnum {
fn to_possible_value(&self);
}
impl ValueEnum for AudioFormat {
fn to_possible_value<'a>(&'a self) {}
}
fn main() {
ValueEnum::to_possible_value$0(&AudioFormat);
}
"#,
expect![[r#"
*to_possible_value*
```rust
ra_test_fixture::AudioFormat
```
```rust
fn to_possible_value<'a>(&'a self)
```
"#]],
);
}
#[test]
fn keyword_inside_link() {
check(
r#"
enum Foo {
MacroExpansion,
}
/// I return a [macro expansion](Foo::MacroExpansion).
fn bar$0() -> Foo {
Foo::MacroExpansion
}
"#,
expect![[r#"
*bar*
```rust
ra_test_fixture
```
```rust
fn bar() -> Foo
```
---
I return a [macro expansion](https://docs.rs/ra_test_fixture/*/ra_test_fixture/enum.Foo.html#variant.MacroExpansion).
"#]],
);
}