1package message

2

3import (

4 "io"

5 "strings"

6 "testing"

7)

8

9func TestDecodeReader(t *testing.T) {

10 check := func(charset, input, output string) {

11 t.Helper()

12 buf, err := io.ReadAll(DecodeReader(charset, strings.NewReader(input)))

13 tcheck(t, err, "decode")

14 if string(buf) != output {

15 t.Fatalf("decoding %q with charset %q, got %q, expected %q", input, charset, buf, output)

16 }

17 }

18

19 check("", "☺", "☺") // No decoding.

20 check("us-ascii", "☺", "☺") // No decoding.

21 check("utf-8", "☺", "☺")

22 check("iso-8859-1", string([]byte{0xa9}), "©")

23 check("iso-8859-5", string([]byte{0xd0}), "а")

24}

25