From e9907ad666f9e965852995e8f8008d33ddc1da7c Mon Sep 17 00:00:00 2001
From: thinkerou <thinkerou@gmail.com>
Date: Thu, 9 Aug 2018 13:19:19 +0800
Subject: [PATCH] add test case for function

---
 recovery_test.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/recovery_test.go b/recovery_test.go
index c91dc9ec..fa065b13 100644
--- a/recovery_test.go
+++ b/recovery_test.go
@@ -56,3 +56,8 @@ func TestSource(t *testing.T) {
 	bs = source(in, 1)
 	assert.Equal(t, []byte("Hello world."), bs)
 }
+
+func TestFunction(t *testing.T) {
+	bs := function(1)
+	assert.Equal(t, []byte("???"), bs)
+}