add integrations test fixture

test/support/fixtures/integrations_fixtures.ex

@@ -0,0 +1,19 @@
+defmodule Towerops.IntegrationsFixtures do
+  @moduledoc """
+  Test helpers for creating integration entities.
+  """
+
+  alias Towerops.Integrations
+
+  def integration_fixture(organization_id, attrs \\ %{}) do
+    attrs =
+      Enum.into(attrs, %{
+        provider: "preseem",
+        enabled: true,
+        credentials: %{"api_key" => "test-key-#{System.unique_integer()}"}
+      })
+
+    {:ok, integration} = Integrations.create_integration(organization_id, attrs)
+    integration
+  end
+end