Common (dunolint-tests.Dunolint

module type Roundtripable = sig ... end

val test_roundtrip : (module Roundtripable with type t = 'a) -> 'a -> Base.unit

module type Predicate = sig ... end

val test_predicate : 
  (module Predicate with type t = 'a) ->
  'a Dunolint.Std.Blang.t ->
  Base.unit