1// Copyright 2012-present Oliver Eilhard. All rights reserved. 2// Use of this source code is governed by a MIT-license. 3// See http://olivere.mit-license.org/license.txt for details. 4 5// This file is based on code that is (c) 2014 Cenk Altı and governed 6// by the MIT license. 7// See https://github.com/cenkalti/backoff for original source. 8 9package elastic 10 11import ( 12 "errors" 13 "testing" 14 "time" 15) 16 17func TestRetry(t *testing.T) { 18 const successOn = 3 19 var i = 0 20 21 // This function is successful on "successOn" calls. 22 f := func() error { 23 i++ 24 // t.Logf("function is called %d. time\n", i) 25 26 if i == successOn { 27 // t.Log("OK") 28 return nil 29 } 30 31 // t.Log("error") 32 return errors.New("error") 33 } 34 35 min := time.Duration(8) * time.Millisecond 36 max := time.Duration(256) * time.Millisecond 37 err := Retry(f, NewExponentialBackoff(min, max)) 38 if err != nil { 39 t.Errorf("unexpected error: %s", err.Error()) 40 } 41 if i != successOn { 42 t.Errorf("invalid number of retries: %d", i) 43 } 44} 45