package log_test import ( "io/ioutil" "os" "strings" "testing" "time" "github.com/v2fly/v2ray-core/v4/common" "github.com/v2fly/v2ray-core/v4/common/buf" . "github.com/v2fly/v2ray-core/v4/common/log" ) func TestFileLogger(t *testing.T) { f, err := ioutil.TempFile("", "vtest") common.Must(err) path := f.Name() common.Must(f.Close()) creator, err := CreateFileLogWriter(path) common.Must(err) handler := NewLogger(creator) handler.Handle(&GeneralMessage{Content: "Test Log"}) time.Sleep(2 * time.Second) common.Must(common.Close(handler)) f, err = os.Open(path) common.Must(err) defer f.Close() b, err := buf.ReadAllToBytes(f) common.Must(err) if !strings.Contains(string(b), "Test Log") { t.Fatal("Expect log text contains 'Test Log', but actually: ", string(b)) } }