From d9dfbf044e4f73b8e8bdcefbeb6e7aaf18b12437 Mon Sep 17 00:00:00 2001
From: Neil Garb <neil@luno.com>
Date: Wed, 23 Oct 2024 08:47:31 +0200
Subject: [PATCH] Add NoApp()

---
 app.go      | 7 +++++++
 app_test.go | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/app.go b/app.go
index a39c88b..d23589d 100644
--- a/app.go
+++ b/app.go
@@ -393,3 +393,10 @@ func handleShutdownErr(a *App, ac AppContext, err error) error {
 	}
 	return err
 }
+
+// NoApp returns a nil app.
+// It can be used when you call a function that accepts a *App, but there's no lu app in scope.
+// f(lu.NoApp()) reads more clearly than f(nil).
+func NoApp() *App {
+	return nil
+}
diff --git a/app_test.go b/app_test.go
index b632b5d..8ad672d 100644
--- a/app_test.go
+++ b/app_test.go
@@ -370,3 +370,7 @@ func TestWaitFor(t *testing.T) {
 		})
 	}
 }
+
+func TestNoApp(t *testing.T) {
+	require.Nil(t, lu.NoApp())
+}