test: add tests for join request page

test/mv_web/plugs/check_page_permission_test.exs

@@ -204,6 +204,12 @@ defmodule MvWeb.Plugs.CheckPagePermissionTest do
 
       refute conn.halted
     end
+
+    test "unauthenticated user can access /join (public join page, no redirect)" do
+      conn = conn_without_user("/join") |> CheckPagePermission.call([])
+
+      refute conn.halted
+    end
   end
 
   describe "error handling" do