1package captcha
 2
 3import (
 4	"os"
 5	"testing"
 6)
 7
 8type devNull struct{}
 9
10func (devNull) Write(b []byte) (int, os.Error) {
11	return len(b), nil
12}
13
14func BenchmarkNewImage(b *testing.B) {
15	b.StopTimer()
16	d := RandomDigits(DefaultLen)
17	b.StartTimer()
18	for i := 0; i < b.N; i++ {
19		NewImage(d, StdWidth, StdHeight)
20	}
21}
22
23func BenchmarkImageWriteTo(b *testing.B) {
24	b.StopTimer()
25	d := RandomDigits(DefaultLen)
26	b.StartTimer()
27	for i := 0; i < b.N; i++ {
28		img := NewImage(d, StdWidth, StdHeight)
29		img.WriteTo(devNull{}) //TODO(dchest): use ioutil.Discard when its available
30	}
31}