From b91f28d7d9e9479a85ad4410b277cce88c1b3377 Mon Sep 17 00:00:00 2001
From: 9seconds <nineseconds@yandex.ru>
Date: Thu, 1 Apr 2021 17:25:49 +0300
Subject: [PATCH] Add test for nil for metric prefix

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

diff --git a/config/type_metric_prefix_test.go b/config/type_metric_prefix_test.go
index 1954f62..5598de0 100644
--- a/config/type_metric_prefix_test.go
+++ b/config/type_metric_prefix_test.go
@@ -17,6 +17,12 @@ type TypeMetricPrefixTestSuite struct {
 	suite.Suite
 }
 
+func (suite *TypeMetricPrefixTestSuite) TestUnmarshalNil() {
+	typ := &config.TypeMetricPrefix{}
+	suite.NoError(typ.UnmarshalText(nil))
+	suite.Empty(typ.String())
+}
+
 func (suite *TypeMetricPrefixTestSuite) TestUnmarshalFail() {
 	testData := []string{
 		"aaa.aaa",