feat: add service for get latest Cgu

apps/lenra/lib/lenra/services/cgu_services.ex

@@ -0,0 +1,10 @@
+defmodule Lenra.CguService do
+ @moduledoc """
+ The service that get the latest CGU.
+ """
+ alias Lenra.{Cgu, Repo}
+
+ def get_latest_cgu do
+ Cgu |> Ecto.Query.last(:inserted_at) |> Repo.one()
+ end
+end

apps/lenra/test/lenra/services/cgu_service_test.exs

@@ -0,0 +1,56 @@
+defmodule Lenra.CguSerciceTest do
+ use Lenra.RepoCase, async: true
+
+ alias Lenra.{Cgu, CguService}
+
+ @valid_cgu1 %{link: "Test", version: "1.0.0", hash: "test"}
+ @valid_cgu2 %{link: "Test1", version: "1.1.0", hash: "Test1"}
+ @valid_cgu3 %{link: "Test2", version: "1.2.0", hash: "Test2"}
+ @valid_cgu4 %{link: "Test3", version: "1.3.0", hash: "Test3"}
+
+ describe "get_latest_cgu" do
+ test "insert 2 cgu and check if the service take the latest" do
+ {:ok, %Cgu{} = _inserted_cgu} = @valid_cgu1 |> Cgu.new() |> Repo.insert()
+
+ date1 = DateTime.utc_now() |> DateTime.add(4, :second) |> DateTime.truncate(:second)
+
+ {:ok, %Cgu{} = inserted_cgu1} =
+ @valid_cgu2
+ |> Cgu.new()
+ |> Ecto.Changeset.put_change(:inserted_at, date1)
+ |> Repo.insert()
+
+ assert inserted_cgu1 == CguService.get_latest_cgu()
+ end
+
+ test "insert 4 cgu and check if the service take the latest" do
+ {:ok, %Cgu{} = _inserted_cgu} = @valid_cgu1 |> Cgu.new() |> Repo.insert()
+
+ date1 = DateTime.utc_now() |> DateTime.add(4, :second) |> DateTime.truncate(:second)
+
+ {:ok, %Cgu{} = _inserted_cgu1} =
+ @valid_cgu2
+ |> Cgu.new()
+ |> Ecto.Changeset.put_change(:inserted_at, date1)
+ |> Repo.insert()
+
+ date2 = DateTime.utc_now() |> DateTime.add(8, :second) |> DateTime.truncate(:second)
+
+ {:ok, %Cgu{} = _inserted_cgu2} =
+ @valid_cgu3
+ |> Cgu.new()
+ |> Ecto.Changeset.put_change(:inserted_at, date2)
+ |> Repo.insert()
+
+ date3 = DateTime.utc_now() |> DateTime.add(12, :second) |> DateTime.truncate(:second)
+
+ {:ok, %Cgu{} = inserted_cgu3} =
+ @valid_cgu4
+ |> Cgu.new()
+ |> Ecto.Changeset.put_change(:inserted_at, date3)
+ |> Repo.insert()
+
+ assert inserted_cgu3 == CguService.get_latest_cgu()
+ end
+ end
+end