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tries_test.go
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tries_test.go
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package backoff
import (
"errors"
"math/rand"
"testing"
"time"
)
func TestMaxTriesHappy(t *testing.T) {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
max := 17 + r.Intn(13)
bo := WithMaxRetries(&ZeroBackOff{}, uint64(max))
// Load up the tries count, but reset should clear the record
for ix := 0; ix < max/2; ix++ {
bo.NextBackOff()
}
bo.Reset()
// Now fill the tries count all the way up
for ix := 0; ix < max; ix++ {
d := bo.NextBackOff()
if d == Stop {
t.Errorf("returned Stop on try %d", ix)
}
}
// We have now called the BackOff max number of times, we expect
// the next result to be Stop, even if we try it multiple times
for ix := 0; ix < 7; ix++ {
d := bo.NextBackOff()
if d != Stop {
t.Error("invalid next back off")
}
}
// Reset makes it all work again
bo.Reset()
d := bo.NextBackOff()
if d == Stop {
t.Error("returned Stop after reset")
}
}
// https://github.com/cenkalti/backoff/issues/80
func TestMaxTriesZero(t *testing.T) {
var called int
b := WithMaxRetries(&ZeroBackOff{}, 0)
err := Retry(func() error {
called++
return errors.New("err")
}, b)
if err == nil {
t.Errorf("error expected, nil found")
}
if called != 1 {
t.Errorf("operation is called %d times", called)
}
}