From bdf490726aa39a9449c48fdfc3cddd8269cee7d1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Giedrius=20Statkevi=C4=8Dius?=
 <giedrius.statkevicius@vinted.com>
Date: Thu, 18 Apr 2024 11:11:37 +0300
Subject: [PATCH] tsdb/wlog: add test for metrics unregistering
MIME-Version: 1.0
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Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
---
 tsdb/wlog/wlog_test.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tsdb/wlog/wlog_test.go b/tsdb/wlog/wlog_test.go
index 7d9692011..165d2758f 100644
--- a/tsdb/wlog/wlog_test.go
+++ b/tsdb/wlog/wlog_test.go
@@ -23,6 +23,8 @@ import (
 	"path/filepath"
 	"testing"
 
+	"github.com/go-kit/log"
+	"github.com/prometheus/client_golang/prometheus"
 	client_testutil "github.com/prometheus/client_golang/prometheus/testutil"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
@@ -561,3 +563,13 @@ func BenchmarkWAL_Log(b *testing.B) {
 		})
 	}
 }
+
+func TestUnregisterMetrics(t *testing.T) {
+	reg := prometheus.NewRegistry()
+
+	for i := 0; i < 2; i++ {
+		wl, err := New(log.NewNopLogger(), reg, t.TempDir(), CompressionNone)
+		require.NoError(t, err)
+		require.NoError(t, wl.Close())
+	}
+}