Support expect in attribute completion and hover

crates/ide/src/hover/render.rs

@@ -329,7 +329,7 @@ pub(super) fn try_for_lint(attr: &ast::Attr, token: &SyntaxToken) -> Option<Hove
     }
     let (is_clippy, lints) = match &*path {
         "feature" => (false, FEATURES),
-        "allow" | "deny" | "forbid" | "warn" => {
+        "allow" | "deny" | "expect" | "forbid" | "warn" => {
             let is_clippy = algo::non_trivia_sibling(token.clone().into(), Direction::Prev)
                 .filter(|t| t.kind() == T![:])
                 .and_then(|t| algo::non_trivia_sibling(t, Direction::Prev))

crates/ide/src/hover/tests.rs

@@ -6336,7 +6336,19 @@ fn hover_lint() {
 
                 arithmetic operation overflows
             "#]],
-    )
+    );
+    check(
+        r#"#![expect(arithmetic_overflow$0)]"#,
+        expect![[r#"
+                *arithmetic_overflow*
+                ```
+                arithmetic_overflow
+                ```
+                ___
+
+                arithmetic operation overflows
+            "#]],
+    );
 }
 
 #[test]
@@ -6352,7 +6364,19 @@ fn hover_clippy_lint() {
 
                 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]