fix: use pretty_print_pat for params in fn

crates/ide/src/hover/tests.rs

@@ -8742,3 +8742,118 @@ fn foo() {
         "#]],
     );
 }
+
+
+#[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
+            test
+            ```
+
+            ```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
+            test
+            ```
+
+            ```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
+            test
+            ```
+
+            ```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
+            test
+            ```
+
+            ```rust
+            fn test_4(Point { x: x, y: 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
+            test
+            ```
+
+            ```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
+            test
+            ```
+
+            ```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
+            test
+            ```
+
+            ```rust
+            fn test_7((x, Foo { a: a, b: b, }): (i32, Foo))
+            ```
+        "#]],
+    );
+}