From f1e94c53c1cda5d98add805ada24ad7e5a0191b6 Mon Sep 17 00:00:00 2001
From: Evadne Wu <ev@radi.ws>
Date: Fri, 20 May 2022 15:52:52 +0200
Subject: [PATCH] Added support for parallel preloading

---
 lib/etso/adapter.ex          | 2 +-
 test/northwind/repo_test.exs | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/etso/adapter.ex b/lib/etso/adapter.ex
index c57e724..dd6e12c 100644
--- a/lib/etso/adapter.ex
+++ b/lib/etso/adapter.ex
@@ -39,7 +39,7 @@ defmodule Etso.Adapter do
 
   @doc false
   @impl Ecto.Adapter
-  def checked_out?(_), do: true
+  def checked_out?(_), do: false
 
   @doc false
   @impl Ecto.Adapter
diff --git a/test/northwind/repo_test.exs b/test/northwind/repo_test.exs
index b919c03..6cb26d5 100644
--- a/test/northwind/repo_test.exs
+++ b/test/northwind/repo_test.exs
@@ -148,6 +148,12 @@ defmodule Northwind.RepoTest do
     |> Repo.preload(shipper: :orders)
   end
 
+  test "Order / Shipper + Employee Preloading" do
+    Model.Order
+    |> Repo.all()
+    |> Repo.preload([[shipper: :orders], :employee, :customer], in_parallel: true)
+  end
+
   test "Order / Shipper / Orders Preloading before all()" do
     Model.Order
     |> preload([_], shipper: :orders)