func translate(tr charset.Translator, in string) (string, error) {
var buf bytes.Buffer
r := charset.NewTranslatingReader(strings.NewReader(in), tr)
_, err := io.Copy(&buf, r)
if err != nil {
return "", err
}
return string(buf.Bytes()), nil
}
func testTranslatingReader(t *testing.T, tr charset.Translator, inReader, outReader func(io.Reader) io.Reader) {
data := make([]byte, 128)
for i := range data {
data[i] = byte(i)
}
inr := inReader(bytes.NewBuffer(data))
r := charset.NewTranslatingReader(inr, tr)
outr := outReader(r)
r = outr
var outbuf bytes.Buffer
_, err := io.Copy(&outbuf, r)
if err != nil {
t.Fatalf("translator %T, readers %T, %T, copy failed: %v", tr, inr, outr, err)
}
err = checkTranslation(data, outbuf.Bytes())
if err != nil {
t.Fatalf("translator %T, readers %T, %T, %v\n", err)
}
}