add and update tests

Author: ParkMyCar

tests/ui/pub_underscore_fields.rs

@@ -1,11 +1,16 @@
 #![allow(unused)]
 #![warn(clippy::pub_underscore_fields)]
 
+use std::marker::PhantomData;
+
 mod inner {
+    use std::marker;
+
     pub struct PubSuper {
         pub(super) a: usize,
         pub(super) _b: u8,
         _c: i32,
+        pub _mark: marker::PhantomData<u8>,
     }
 
     mod inner2 {
@@ -26,6 +31,7 @@ fn main() {
         a: u8,
         _b: usize,
         pub _c: i64,
+        #[doc(hidden)]
         pub d: String,
         pub _e: Option<u8>,
     }
@@ -47,5 +53,6 @@ fn main() {
     pub struct NamedPub {
         r#pub: bool,
         _pub: String,
+        pub(crate) _mark: PhantomData<u8>,
     }
 }

tests/ui/pub_underscore_fields.stderr

@@ -1,5 +1,5 @@
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:7:9
+  --> $DIR/pub_underscore_fields.rs:11:9
    |
 LL |         pub(super) _b: u8,
    |         ^^^^^^^^^^^^^
@@ -9,39 +9,39 @@ LL |         pub(super) _b: u8,
    = help: to override `-D warnings` add `#[allow(clippy::pub_underscore_fields)]`
 
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:14:13
+  --> $DIR/pub_underscore_fields.rs:19:13
    |
 LL |             pub(in crate::inner) _f: Option<()>,
    |             ^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider removing the underscore, or making the field private
 
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:21:9
+  --> $DIR/pub_underscore_fields.rs:26:9
    |
 LL |         pub _a: usize,
    |         ^^^^^^
    |
    = help: consider removing the underscore, or making the field private
 
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:28:9
+  --> $DIR/pub_underscore_fields.rs:33:9
    |
 LL |         pub _c: i64,
    |         ^^^^^^
    |
    = help: consider removing the underscore, or making the field private
 
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:30:9
+  --> $DIR/pub_underscore_fields.rs:36:9
    |
 LL |         pub _e: Option<u8>,
    |         ^^^^^^
    |
    = help: consider removing the underscore, or making the field private
 
 error: field marked as public but also inferred as unused because it's prefixed with `_`
-  --> $DIR/pub_underscore_fields.rs:43:9
+  --> $DIR/pub_underscore_fields.rs:49:9
    |
 LL |         pub(crate) _b: Option<String>,
    |         ^^^^^^^^^^^^^