From 3d9a63a1f03f952cec917ee098b4efe3bb94a314 Mon Sep 17 00:00:00 2001
From: 9seconds <nineseconds@yandex.ru>
Date: Thu, 1 Apr 2021 21:20:35 +0300
Subject: [PATCH] Add unmarshal nil test for prefer ip

---
 config/type_prefer_ip_test.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/config/type_prefer_ip_test.go b/config/type_prefer_ip_test.go
index 30eb5ea..6a93b53 100644
--- a/config/type_prefer_ip_test.go
+++ b/config/type_prefer_ip_test.go
@@ -18,6 +18,12 @@ type TypePreferIPTestSuite struct {
 	suite.Suite
 }
 
+func (suite *TypePreferIPTestSuite) TestUnmarshalNil() {
+	typ := &config.TypePreferIP{}
+	suite.NoError(typ.UnmarshalText(nil))
+	suite.Empty(typ.String())
+}
+
 func (suite *TypePreferIPTestSuite) TestUnmarshalFail() {
 	testData := []string{
 		"p",