From 2f4f9697dcf548ca385a03eda952e8a11e3d6d81 Mon Sep 17 00:00:00 2001
From: jspc <james+git@zero-internet.org.uk>
Date: Sat, 1 Oct 2022 16:24:45 +0100
Subject: [PATCH] Cover lookup where a value is set

---
 config_test.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/config_test.go b/config_test.go
index b470ec4..72062f1 100644
--- a/config_test.go
+++ b/config_test.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"os"
 	"testing"
 )
 
@@ -11,6 +12,15 @@ func TestLookup(t *testing.T) {
 	}
 }
 
+func TestLookup_Exists(t *testing.T) {
+	os.Setenv("__THIS_KEY_HAS_A_VALUE", "<3")
+
+	got := Lookup("__THIS_KEY_HAS_A_VALUE", "blahblahblah")
+	if got != "<3" {
+		t.Errorf("unexpected value %q", got)
+	}
+}
+
 func TestMustLookup(t *testing.T) {
 	defer func() {
 		err := recover()