⬥ ID3 encoding/decoding library in Go ⬥
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package v2
import (
"os"
"path/filepath"
"testing"
"github.com/Unbewohnte/id3ed/util"
)
func TestReadNextFrame(t *testing.T) {
f, err := os.Open(filepath.Join(TESTDATAPATH, "testreadv2.mp3"))
if err != nil {
t.Errorf("%s", err)
}
header, err := readHeader(f)
if err != nil {
t.Errorf("%s", err)
}
firstFrame, _, err := readNextFrame(f, header)
if err != nil {
t.Errorf("ReadFrame failed: %s", err)
}
if firstFrame.Header.ID != "TRCK" {
t.Errorf("GetFrame failed: expected ID %s; got %s",
"TRCK", firstFrame.Header.ID)
}
if firstFrame.Header.Flags.Encrypted != false {
t.Errorf("ReadFrame failed: expected compressed flag to be %v; got %v",
false, firstFrame.Header.Flags.Encrypted)
}
secondFrame, _, err := readNextFrame(f, header)
if err != nil {
t.Errorf("ReadFrame failed: %s", err)
}
if secondFrame.Header.ID != "TDRC" {
t.Errorf("ReadFrame failed: expected ID %s; got %s",
"TDRC", secondFrame.Header.ID)
}
if util.ToStringLossy(secondFrame.Contents) != "2006" {
t.Errorf("ReadFrame failed: expected contents to be %s; got %s",
"2006", secondFrame.Contents)
}
}
func TestFrameFlagsToBytes(t *testing.T) {
testFlags := FrameFlags{
TagAlterPreservation: true,
ReadOnly: true,
}
versions := []string{V2_2, V2_3, V2_4}
for _, version := range versions {
flagBytes := frameFlagsToBytes(testFlags, version)
if version == V2_2 && flagBytes != nil {
t.Errorf("frameFlagsToBytes failed: V2_2, expected flagbytes to be nil; got %v", flagBytes)
}
if version != V2_2 && len(flagBytes) != 2 {
t.Errorf("frameFlagsToBytes failed: expected flagbytes to be len of 2; got %v", len(flagBytes))
}
}
}
func TestFrameToBytes(t *testing.T) {
testframe := Frame{
Header: FrameHeader{
ID: "TEST",
Flags: FrameFlags{}, // all false
Size: 4,
},
Contents: []byte{util.EncodingUTF8, 60, 60, 60}, // 60 == <
}
frameBytes := testframe.toBytes(V2_4)
// t.Errorf("%+v", frameBytes)
// 84 69 83 84 0 0 0 4 0 0 3 60 60 60
// 84 69 83 84 - id (4)
// 0 0 - flags (2)
// 0 4 0 0 - size (4)
// header - 4 + 4 + 2 = 10 bytes (success)
// 3 60 60 60 - contents
if len(frameBytes)-int(testframe.Header.Size) != HEADERSIZE {
t.Errorf("FrameToBytes failed: expected header size to be %d; got %d",
HEADERSIZE, len(frameBytes)-int(testframe.Header.Size))
}
if util.DecodeText(frameBytes[10:]) != "<<<" {
t.Errorf("FrameToBytes failed: expected contents to be %v; got %v",
testframe.Contents, frameBytes[10:])
}
}