From 5d99e697aab03fb552a6536710c521c83fc65234 Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Mon, 22 Nov 2021 13:22:14 +0300
Subject: [PATCH] [#356] refs: Test text marshaling of nil SubnetID

Add `(*refs.SubnetID)(nil).MarshalText()` unit test.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 refs/types_test.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/refs/types_test.go b/refs/types_test.go
index 52c6b80c..e2077b2b 100644
--- a/refs/types_test.go
+++ b/refs/types_test.go
@@ -35,6 +35,18 @@ func TestSubnetID_MarshalText(t *testing.T) {
 	require.NoError(t, err)
 
 	require.EqualValues(t, val, res)
+
+	t.Run("nil", func(t *testing.T) {
+		var id *refs.SubnetID
+
+		txt, err := id.MarshalText()
+		require.NoError(t, err)
+
+		res, err := strconv.ParseUint(string(txt), 10, 32)
+		require.NoError(t, err)
+
+		require.Zero(t, res)
+	})
 }
 
 func TestSubnetID_UnmarshalText(t *testing.T) {