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package retry
import (
"errors"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestDoAllFailed(t *testing.T) {
var retrySum uint
err := Do(
func() error { return errors.New("test") },
OnRetry(func(n uint, err error) { retrySum += n }),
Units(time.Nanosecond),
)
assert.Error(t, err)
expectedErrorFormat := `All attempts fail:
#1: test
#2: test
#3: test
#4: test
#5: test
#6: test
#7: test
#8: test
#9: test
#10: test`
assert.Equal(t, expectedErrorFormat, err.Error(), "retry error format")
assert.Equal(t, uint(45), retrySum, "right count of retry")
}
func TestDoFirstOk(t *testing.T) {
var retrySum uint
err := Do(
func() error { return nil },
OnRetry(func(n uint, err error) { retrySum += n }),
)
assert.NoError(t, err)
assert.Equal(t, uint(0), retrySum, "no retry")
}
func TestRetryIf(t *testing.T) {
var retryCount uint
err := Do(
func() error {
if retryCount >= 2 {
return errors.New("special")
} else {
return errors.New("test")
}
},
OnRetry(func(n uint, err error) { retryCount++ }),
RetryIf(func(err error) bool {
return err.Error() != "special"
}),
Units(time.Nanosecond),
)
assert.Error(t, err)
expectedErrorFormat := `All attempts fail:
#1: test
#2: test
#3: special`
assert.Equal(t, expectedErrorFormat, err.Error(), "retry error format")
assert.Equal(t, uint(3), retryCount, "right count of retry")
}
func TestDefaultSleep(t *testing.T) {
start := time.Now()
err := Do(
func() error { return errors.New("test") },
Attempts(3),
)
dur := time.Since(start)
assert.Error(t, err)
assert.True(t, dur > 10*time.Millisecond, "3 times default retry is longer then 10ms")
}
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