[#290] Fix TestErrorTimeoutChecking test

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

CHANGELOG.md

@@ -9,6 +9,7 @@ This document outlines major changes between releases.
 - Fix status code in GET/HEAD delete marker (#226)
 - Fix `NextVersionIDMarker` in `list-object-versions` (#248)
 - Fix possibility of panic during SIGHUP (#288)
+- Fix flaky `TestErrorTimeoutChecking` (`make test` sometimes failed) (#290)
 
 ### Added
 - Add new `frostfs.buffer_max_size_for_put` config param and sync TZ hash for PUT operations (#197)

internal/frostfs/frostfs_test.go

@@ -38,7 +38,7 @@ func TestErrorTimeoutChecking(t *testing.T) {
 	t.Run("deadline exceeded", func(t *testing.T) {
 		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond)
 		defer cancel()
-		time.Sleep(50 * time.Millisecond)
+		<-ctx.Done()
 
 		require.True(t, errorsFrost.IsTimeoutError(ctx.Err()))
 	})