(* TEST
   * expect
*)

class type foo_t =
  object
    method foo: string
  end

type 'a name =
    Foo: foo_t name
  | Int: int name
;;

[%%expect{|
class type foo_t = object method foo : string end
type 'a name = Foo : foo_t name | Int : int name
|}]

class foo =
  object(self)
    method foo = "foo"
    method cast =
      function
          Foo -> (self :> <foo : string>)
  end
;;
[%%expect{|
class foo :
  object method cast : foo_t name -> < foo : string > method foo : string end
|}]

class foo: foo_t =
  object(self)
    method foo = "foo"
    method cast: type a. a name -> a =
      function
          Foo -> (self :> foo_t)
        | _ -> raise Exit
  end
;;
[%%expect{|
Lines 2-8, characters 2-5:
2 | ..object(self)
3 |     method foo = "foo"
4 |     method cast: type a. a name -> a =
5 |       function
6 |           Foo -> (self :> foo_t)
7 |         | _ -> raise Exit
8 |   end
Error: The class type
         object method cast : 'a name -> 'a method foo : string end
       is not matched by the class type foo_t
       The public method cast cannot be hidden
|}]