Update switch test for Eio 1.0

This matches the change to the same test in
ocaml-multicore/eio#684.

dune-project

@@ -12,7 +12,7 @@
  (description "An Eio scheduler suitable for JavaScript environments.")
  (depends
   (mdx (and (>= 2.4.1) :with-test))
-  (eio (>= 0.14))))
+  (eio (>= 1.0))))
 (package
  (name eio_brr)
  (synopsis "Eio support for Brr")

eio_js_backend.opam

@@ -11,7 +11,7 @@ bug-reports: "https://github.com/ocaml-multicore/eio_js/issues"
 depends: [
   "dune" {>= "3.9"}
   "mdx" {>= "2.4.1" & with-test}
-  "eio" {>= "0.14"}
+  "eio" {>= "1.0"}
   "odoc" {with-doc}
 ]
 build: [

lib_eio_js_backend/tests/switch.md

@@ -377,8 +377,13 @@ Using switch from inside release handler:
     );
     Switch.on_release sw (fun () ->
       Fiber.fork ~sw (fun () ->
-        Switch.on_release sw (fun () -> traceln "Late release");
         traceln "Starting release 2";
+        begin
+          try
+            Switch.on_release sw (fun () -> traceln "Immediate release");
+          with Invalid_argument msg ->
+            traceln "on_release refused: %s" msg
+        end;
         Fiber.yield ();
         traceln "Finished release 2"
       );
@@ -387,10 +392,11 @@ Using switch from inside release handler:
   );;
 +Main fiber done
 +Starting release 2
++Immediate release
++on_release refused: Switch finished!
 +Starting release 1
 +Finished release 2
 +Finished release 1
-+Late release
 - : unit = ()
 ```