fix: failing tests

test/mv_web/live/join_live_test.exs

@@ -14,6 +14,7 @@ defmodule MvWeb.JoinLiveTest do
   import Phoenix.LiveViewTest
   import Ecto.Query
 
+  alias Ecto.Adapters.SQL.Sandbox
   alias Mv.Membership
   alias Mv.Repo
 
@@ -45,6 +46,9 @@ defmodule MvWeb.JoinLiveTest do
       count_before = count_join_requests()
       {:ok, view, _html} = live(conn, "/join")
 
+      # Allow LiveView process to use the same Ecto sandbox so the test sees the created JoinRequest.
+      Sandbox.allow(Repo, conn.private[:ecto_sandbox], view.pid)
+
       view
       |> form("#join-form", %{
         "email" => "newuser#{System.unique_integer([:positive])}@example.com",