package client import ( "context" "errors" "testing" "time" ) func TestServerPicker_UnavailableServers(t *testing.T) { sp := ServerPicker{ TokenStore: nil, PeerID: "test", } ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) defer cancel() go func() { _, err := sp.PickServer(ctx, []string{"rel://dummy1", "rel://dummy2"}) if err == nil { t.Error(err) } cancel() }() <-ctx.Done() if errors.Is(ctx.Err(), context.DeadlineExceeded) { t.Errorf("PickServer() took too long to complete") } }