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v2fly/common/retry/retry_test.go
2022-01-02 15:16:23 +00:00

97 lines
1.9 KiB
Go

package retry_test
import (
"testing"
"time"
"github.com/v2fly/v2ray-core/v5/common"
"github.com/v2fly/v2ray-core/v5/common/errors"
. "github.com/v2fly/v2ray-core/v5/common/retry"
)
var errorTestOnly = errors.New("this is a fake error")
func TestNoRetry(t *testing.T) {
startTime := time.Now().Unix()
err := Timed(10, 100000).On(func() error {
return nil
})
endTime := time.Now().Unix()
common.Must(err)
if endTime < startTime {
t.Error("endTime < startTime: ", startTime, " -> ", endTime)
}
}
func TestRetryOnce(t *testing.T) {
startTime := time.Now()
called := 0
err := Timed(10, 1000).On(func() error {
if called == 0 {
called++
return errorTestOnly
}
return nil
})
duration := time.Since(startTime)
common.Must(err)
if v := int64(duration / time.Millisecond); v < 900 {
t.Error("duration: ", v)
}
}
func TestRetryMultiple(t *testing.T) {
startTime := time.Now()
called := 0
err := Timed(10, 1000).On(func() error {
if called < 5 {
called++
return errorTestOnly
}
return nil
})
duration := time.Since(startTime)
common.Must(err)
if v := int64(duration / time.Millisecond); v < 4900 {
t.Error("duration: ", v)
}
}
func TestRetryExhausted(t *testing.T) {
startTime := time.Now()
called := 0
err := Timed(2, 1000).On(func() error {
called++
return errorTestOnly
})
duration := time.Since(startTime)
if errors.Cause(err) != ErrRetryFailed {
t.Error("cause: ", err)
}
if v := int64(duration / time.Millisecond); v < 1900 {
t.Error("duration: ", v)
}
}
func TestExponentialBackoff(t *testing.T) {
startTime := time.Now()
called := 0
err := ExponentialBackoff(10, 100).On(func() error {
called++
return errorTestOnly
})
duration := time.Since(startTime)
if errors.Cause(err) != ErrRetryFailed {
t.Error("cause: ", err)
}
if v := int64(duration / time.Millisecond); v < 4000 {
t.Error("duration: ", v)
}
}