Merge #7260

7260: Render Fn* trait objects and impl types as rust does r=matklad a=Veykril

Also fixes raw ptr impl types being rendered ambiguously with multiple predicates.
This moves out the `FamousDefs::Fixture` into its own file as well, cause I figured it is big enough to get its own file at this point + we also get highlighting this way when editing it.

Fixes #3012

Co-authored-by: Lukas Wirth <[email protected]>

2 files changed, 19 insertions, 4 deletions

diff --git a/crates/hir_ty/src/tests/display_source_code.rs b/crates/hir_ty/src/tests/display_source_code.rs
index b502135d8..3d29021aa 100644
--- a/crates/hir_ty/src/tests/display_source_code.rs
+++ b/crates/hir_ty/src/tests/display_source_code.rs
@@ -39,3 +39,18 @@ fn main() {
 "#,
     );
 }
+
+#[test]
+fn render_raw_ptr_impl_ty() {
+    check_types_source_code(
+        r#"
+trait Sized {}
+trait Unpin {}
+fn foo() -> *const (impl Unpin + Sized) { loop {} }
+fn main() {
+    let foo = foo();
+    foo;
+}   //^ *const (impl Unpin + Sized)
+"#,
+    );
+}
diff --git a/crates/hir_ty/src/tests/traits.rs b/crates/hir_ty/src/tests/traits.rs
index 41d097519..e5a3f95a6 100644
--- a/crates/hir_ty/src/tests/traits.rs
+++ b/crates/hir_ty/src/tests/traits.rs
@@ -3038,16 +3038,16 @@ fn infer_box_fn_arg() {
             406..417 '&self.inner': &*mut T
             407..411 'self': &Box<T>
             407..417 'self.inner': *mut T
-            478..575 '{     ...(&s) }': FnOnce::Output<dyn FnOnce<(&Option<i32>,)>, (&Option<i32>,)>
+            478..575 '{     ...(&s) }': FnOnce::Output<dyn FnOnce(&Option<i32>), (&Option<i32>,)>
             488..489 's': Option<i32>
             492..504 'Option::None': Option<i32>
-            514..515 'f': Box<dyn FnOnce<(&Option<i32>,)>>
+            514..515 'f': Box<dyn FnOnce(&Option<i32>)>
             549..562 'box (|ps| {})': Box<|{unknown}| -> ()>
             554..561 '|ps| {}': |{unknown}| -> ()
             555..557 'ps': {unknown}
             559..561 '{}': ()
-            568..569 'f': Box<dyn FnOnce<(&Option<i32>,)>>
-            568..573 'f(&s)': FnOnce::Output<dyn FnOnce<(&Option<i32>,)>, (&Option<i32>,)>
+            568..569 'f': Box<dyn FnOnce(&Option<i32>)>
+            568..573 'f(&s)': FnOnce::Output<dyn FnOnce(&Option<i32>), (&Option<i32>,)>
             570..572 '&s': &Option<i32>
             571..572 's': Option<i32>
         "#]],