forked from eaburns/flac
/
decode_test.go
507 lines (409 loc) · 11.9 KB
/
decode_test.go
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// © 2014 the flac Authors under the MIT license. See AUTHORS for the list of authors.
package flac
import (
"bytes"
"testing"
"github.com/eaburns/bit"
)
func TestUTF8Decode(t *testing.T) {
tests := []struct {
data []byte
val uint64
}{
{[]byte{0x7F}, 0x7F},
{[]byte{0xC2, 0xA2}, 0xA2},
{[]byte{0xC2, 0x80}, 0x080},
{[]byte{0xDF, 0xBF}, 0x7FF},
{[]byte{0xE2, 0x82, 0xAC}, 0x20AC},
{[]byte{0xE0, 0xA0, 0x80}, 0x800},
{[]byte{0xEF, 0xBF, 0xBF}, 0xFFFF},
{[]byte{0xF0, 0x90, 0x80, 0x80}, 0x10000},
{[]byte{0xF7, 0xBF, 0xBF, 0xBF}, 0x1FFFFF},
{[]byte{0xF0, 0xA4, 0xAD, 0xA2}, 0x24B62},
{[]byte{0xF8, 0x88, 0x80, 0x80, 0x80}, 0x200000},
{[]byte{0xFB, 0xBF, 0xBF, 0xBF, 0xBF}, 0x3FFFFFF},
{[]byte{0xFC, 0x84, 0x80, 0x80, 0x80, 0x80}, 0x4000000},
{[]byte{0xFD, 0xBF, 0xBF, 0xBF, 0xBF, 0xBF}, 0x7FFFFFFF},
}
for _, test := range tests {
br := bit.NewReader(bytes.NewReader(test.data))
switch v, err := utf8Decode(br); {
case err != nil:
t.Errorf("Unexpected error decoding %v: %v", test.data, err)
case v != test.val:
t.Errorf("Expected %v to decode to %v, got %v", test.data, test.val, v)
}
}
}
func TestNewDecoderError(t *testing.T) {
tests := []struct {
data []byte
str string
}{
{[]byte("foobar"), "Bad fLaC magic header"},
{
[]byte{
'f', 'L', 'a', 'C',
0x7F, 0x00, 0x00, 0x00, 0x01, // Bad block type
},
"Invalid metedata block type (127)",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x81, 0x00, 0x00, 0x00, 0x01, // last metadata header: 1 byte padding.
0x00,
},
"Missing STREAMINFO header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x04, 0x40, 0, 0, 0, 0, // rate 0, 2 channels, 8 bits/sample, 0 samples
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
},
"Bad sample rate",
},
}
for _, test := range tests {
_, err := NewDecoder(bytes.NewReader(test.data))
if err.Error() != test.str {
t.Errorf("Expected %s, got %v", test.str, err)
}
}
}
func TestReadFrameHeaderError(t *testing.T) {
tests := []struct {
data []byte
str string
}{
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Bad sync code.
0x00, 0x00,
},
"Failed to find the synchronize code for the next frame",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 1 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xFB,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// 2 channels · 8 bits per sample · 0 reserved
// 0010 · 001 · 0
0x22,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Invalid reserved value in frame header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// 2 channels · 8 bits per sample · 1 reserved
// 0010 · 001 · 1
0x23,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Invalid reserved value in frame header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x09,
// 2 channels · 8 bits per sample · 0 reserved
// 0010 · 001 · 0
0x22,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad block size in frame header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// 2 channels · bad bits per sample · 0 reserved
// 0010 · 011 · 0
0x26,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad sample size in frame header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// 2 channels · bad bits per sample · 0 reserved
// 0010 · 111 · 0
0x2E,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad sample size in frame header",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// bad channels · 8 bits per sample · 0 reserved
// 1011 · 001 · 0
0xB2,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad channel assignment",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// bad channels · 8 bits per sample · 0 reserved
// 1100 · 001 · 0
0xC2,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad channel assignment",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// bad channels · 8 bits per sample · 0 reserved
// 1101 · 001 · 0
0xD2,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad channel assignment",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// bad channels · 8 bits per sample · 0 reserved
// 1110 · 001 · 0
0xE2,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad channel assignment",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// bad channels · 8 bits per sample · 0 reserved
// 1111 · 001 · 0
0xF2,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad channel assignment",
},
{
[]byte{
'f', 'L', 'a', 'C',
0x80, 0, 0, 34, // last metadata header: stream info.
// STREAMINFO
0, 0, // min block size
0, 0, // max block size
0, 0, 0, // min frame size
0, 0, 0, // max frame size
0, 0, 0x14, 0x70, 0, 0, 0, 1, // rate 1, 2 channels, 8 bits/sample, 1 sample
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // MD5, obviously not the true value.
// Sync code · 0 reserved · fixed blocking
// 1111 1111, 1111 10 · 0 · 1
0xFF, 0xF9,
// 192 block size · 44.1 kHz sample rate
// 0001 · 1001
0x19,
// 2 channels · 8 bits per sample · 0 reserved
// 0010 · 001 · 0
0x22,
// UTF8 frame number 0—frame number since fixed size
0x00,
// CRC8—invalid
0x00,
},
"Bad checksum",
},
}
for _, test := range tests {
d, err := NewDecoder(bytes.NewReader(test.data))
if err != nil {
panic("Unexpected error making a new decoder: " + err.Error())
}
if _, err = readFrameHeader(d.r, d.StreamInfo); err.Error() != test.str {
t.Errorf("Expected %s, got %v", test.str, err)
}
}
}