Module Async.Expect_test_config_or_errorSource

An alternative to Async.Deferred_or_error_expect_test_config in which %expect has type unit rather than unit Deferred.Or_error.t. This lets one write:

  [%expect {| |};

rather than:

  let%bind () = [%expect {| |}] in

It also means that let%expect cannot terminate with %expect, and must instead terminate with return ().