Add more tests

Author: topecongiro

tests/source/structs.rs

@@ -260,6 +260,9 @@ struct Loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
 struct Loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong { x: i32 }
 
 // structs with visibility, do not duplicate visibility (#2110).
+pub(in self) struct Foo{}
+pub(super) struct Foo{}
+pub(crate) struct Foo{}
 pub(in self) struct Foo();
 pub(super) struct Foo();
 pub(crate) struct Foo();

tests/target/structs.rs

@@ -302,6 +302,9 @@ struct Loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
 }
 
 // structs with visibility, do not duplicate visibility (#2110).
-pub(in self) struct Foo();
+pub(self) struct Foo {}
+pub(super) struct Foo {}
+pub(crate) struct Foo {}
+pub(self) struct Foo();
 pub(super) struct Foo();
 pub(crate) struct Foo();