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import unittest
import pytest
from eyed3.id3.headers import *
from eyed3.id3 import ID3_DEFAULT_VERSION, TagException
from io import BytesIO
class TestTagHeader(unittest.TestCase):
def testCtor(self):
h = TagHeader()
assert (h.version == ID3_DEFAULT_VERSION)
assert not(h.unsync)
assert not(h.extended)
assert not(h.experimental)
assert not(h.footer)
assert h.tag_size == 0
def testTagVersion(self):
for maj, min, rev in [(1, 0, 0), (1, 1, 0), (2, 2, 0), (2, 3, 0),
(2, 4, 0)]:
h = TagHeader((maj, min, rev))
assert (h.major_version == maj)
assert (h.minor_version == min)
assert (h.rev_version == rev)
for maj, min, rev in [(1, 0, None), (1, None, 0), (2, 5, 0), (3, 4, 0)]:
try:
h = TagHeader((maj, min, rev))
except ValueError:
pass
else:
assert not("Invalid version, expected ValueError")
def testParse(self):
# Incomplete headers
for data in [b"", b"ID3", b"ID3\x04\x00",
b"ID3\x02\x00\x00",
b"ID3\x03\x00\x00",
b"ID3\x04\x00\x00",
]:
header = TagHeader()
found = header.parse(BytesIO(data))
assert not(found)
# Invalid versions
for data in [b"ID3\x01\x00\x00",
b"ID3\x05\x00\x00",
b"ID3\x06\x00\x00",
]:
header = TagHeader()
try:
found = header.parse(BytesIO(data))
except TagException:
pass
else:
assert not("Expected TagException invalid version")
# Complete headers
for data in [b"ID3\x02\x00\x00",
b"ID3\x03\x00\x00",
b"ID3\x04\x00\x00",
]:
for sz in [0, 10, 100, 1000, 2500, 5000, 7500, 10000]:
sz_bytes = bin2bytes(bin2synchsafe(dec2bin(sz, 32)))
header = TagHeader()
found = header.parse(BytesIO(data + sz_bytes))
assert (found)
assert header.tag_size == sz
def testRenderWithUnsyncTrue(self):
h = TagHeader()
h.unsync = True
with pytest.raises(NotImplementedError):
h.render(100)
def testRender(self):
h = TagHeader()
h.unsync = False
header = h.render(100)
h2 = TagHeader()
found = h2.parse(BytesIO(header))
assert not(h2.unsync)
assert (found)
assert header == h2.render(100)
h = TagHeader()
h.footer = True
h.extended = True
header = h.render(666)
h2 = TagHeader()
found = h2.parse(BytesIO(header))
assert (found)
assert not(h2.unsync)
assert not(h2.experimental)
assert h2.footer
assert h2.extended
assert (h2.tag_size == 666)
assert (header == h2.render(666))
class TestExtendedHeader(unittest.TestCase):
def testCtor(self):
h = ExtendedTagHeader()
assert (h.size == 0)
assert (h._flags == 0)
assert (h.crc is None)
assert (h._restrictions == 0)
assert not(h.update_bit)
assert not(h.crc_bit)
assert not(h.restrictions_bit)
def testUpdateBit(self):
h = ExtendedTagHeader()
h.update_bit = 1
assert (h.update_bit)
h.update_bit = 0
assert not(h.update_bit)
h.update_bit = 1
assert (h.update_bit)
h.update_bit = False
assert not(h.update_bit)
h.update_bit = True
assert (h.update_bit)
def testCrcBit(self):
h = ExtendedTagHeader()
h.update_bit = True
h.crc_bit = 1
assert (h.update_bit)
assert (h.crc_bit)
h.crc_bit = 0
assert (h.update_bit)
assert not(h.crc_bit)
h.crc_bit = 1
assert (h.update_bit)
assert (h.crc_bit)
h.crc_bit = False
assert (h.update_bit)
assert not(h.crc_bit)
h.crc_bit = True
assert (h.update_bit)
assert (h.crc_bit)
def testRestrictionsBit(self):
h = ExtendedTagHeader()
h.update_bit = True
h.crc_bit = True
h.restrictions_bit = 1
assert (h.update_bit)
assert (h.crc_bit)
assert (h.restrictions_bit)
h.restrictions_bit = 0
assert (h.update_bit)
assert (h.crc_bit)
assert not(h.restrictions_bit)
h.restrictions_bit = 1
assert (h.update_bit)
assert (h.crc_bit)
assert (h.restrictions_bit)
h.restrictions_bit = False
assert (h.update_bit)
assert (h.crc_bit)
assert not(h.restrictions_bit)
h.restrictions_bit = True
assert (h.update_bit)
assert (h.crc_bit)
assert (h.restrictions_bit)
h = ExtendedTagHeader()
h.restrictions_bit = True
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_LARGE)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_NONE)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_NONE)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_NONE)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_NONE)
h.tag_size_restriction = ExtendedTagHeader.RESTRICT_TAG_SZ_TINY
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_TINY)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_NONE)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_NONE)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_NONE)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_NONE)
h.text_enc_restriction = ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_TINY)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_NONE)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_NONE)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_NONE)
h.text_length_restriction = ExtendedTagHeader.RESTRICT_TEXT_LEN_30
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_TINY)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_30)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_NONE)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_NONE)
h.image_enc_restriction = ExtendedTagHeader.RESTRICT_IMG_ENC_PNG_JPG
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_TINY)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_30)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_PNG_JPG)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_NONE)
h.image_size_restriction = ExtendedTagHeader.RESTRICT_IMG_SZ_256
assert (h.tag_size_restriction ==
ExtendedTagHeader.RESTRICT_TAG_SZ_TINY)
assert (h.text_enc_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8)
assert (h.text_length_restriction ==
ExtendedTagHeader.RESTRICT_TEXT_LEN_30)
assert (h.image_enc_restriction ==
ExtendedTagHeader.RESTRICT_IMG_ENC_PNG_JPG)
assert (h.image_size_restriction ==
ExtendedTagHeader.RESTRICT_IMG_SZ_256)
assert " 32 frames " in h.tag_size_restriction_description
assert " 4 KB " in h.tag_size_restriction_description
h.tag_size_restriction = ExtendedTagHeader.RESTRICT_TAG_SZ_LARGE
assert " 128 frames " in h.tag_size_restriction_description
h.tag_size_restriction = ExtendedTagHeader.RESTRICT_TAG_SZ_MED
assert " 64 frames " in h.tag_size_restriction_description
h.tag_size_restriction = ExtendedTagHeader.RESTRICT_TAG_SZ_SMALL
assert " 32 frames " in h.tag_size_restriction_description
assert " 40 KB " in h.tag_size_restriction_description
assert (" UTF-8" in h.text_enc_restriction_description)
h.text_enc_restriction = ExtendedTagHeader.RESTRICT_TEXT_ENC_NONE
assert ("None" == h.text_enc_restriction_description)
assert " 30 " in h.text_length_restriction_description
h.text_length_restriction = ExtendedTagHeader.RESTRICT_TEXT_LEN_NONE
assert ("None" == h.text_length_restriction_description)
h.text_length_restriction = ExtendedTagHeader.RESTRICT_TEXT_LEN_1024
assert " 1024 " in h.text_length_restriction_description
h.text_length_restriction = ExtendedTagHeader.RESTRICT_TEXT_LEN_128
assert " 128 " in h.text_length_restriction_description
assert " PNG " in h.image_enc_restriction_description
h.image_enc_restriction = ExtendedTagHeader.RESTRICT_IMG_ENC_NONE
assert ("None" == h.image_enc_restriction_description)
assert " 256x256 " in h.image_size_restriction_description
h.image_size_restriction = ExtendedTagHeader.RESTRICT_IMG_SZ_NONE
assert ("None" == h.image_size_restriction_description)
h.image_size_restriction = ExtendedTagHeader.RESTRICT_IMG_SZ_64
assert (" 64x64 pixels or smaller" in
h.image_size_restriction_description)
h.image_size_restriction = ExtendedTagHeader.RESTRICT_IMG_SZ_64_EXACT
assert "exactly 64x64 pixels" in h.image_size_restriction_description
def testRender(self):
version = (2, 4, 0)
dummy_data = b"\xab" * 50
dummy_padding_len = 1024
h = ExtendedTagHeader()
h.update_bit = 1
h.crc_bit = 1
h.tag_size_restriction = ExtendedTagHeader.RESTRICT_TAG_SZ_MED
h.text_enc_restriction = ExtendedTagHeader.RESTRICT_TEXT_ENC_UTF8
h.text_length_restriction = ExtendedTagHeader.RESTRICT_TEXT_LEN_128
h.image_enc_restriction = ExtendedTagHeader.RESTRICT_IMG_ENC_PNG_JPG
h.image_size_restriction = ExtendedTagHeader.RESTRICT_IMG_SZ_256
header = h.render(version, dummy_data, dummy_padding_len)
h2 = ExtendedTagHeader()
h2.parse(BytesIO(header), version)
assert (h2.update_bit)
assert (h2.crc_bit)
assert (h2.restrictions_bit)
assert (h.crc == h2.crc)
assert (h.tag_size_restriction == h2.tag_size_restriction)
assert (h.text_enc_restriction == h2.text_enc_restriction)
assert (h.text_length_restriction == h2.text_length_restriction)
assert (h.image_enc_restriction == h2.image_enc_restriction)
assert (h.image_size_restriction == h2.image_size_restriction)
assert h2.render(version, dummy_data, dummy_padding_len) == header
# version 2.3
header_23 = h.render((2,3,0), dummy_data, dummy_padding_len)
h3 = ExtendedTagHeader()
h3.parse(BytesIO(header_23), (2,3,0))
assert not(h3.update_bit)
assert (h3.crc_bit)
assert not(h3.restrictions_bit)
assert (h.crc == h3.crc)
assert (0 == h3.tag_size_restriction)
assert (0 == h3.text_enc_restriction)
assert (0 == h3.text_length_restriction)
assert (0 == h3.image_enc_restriction)
assert (0 == h3.image_size_restriction)
def testRenderCrcPadding(self):
version = (2, 4, 0)
h = ExtendedTagHeader()
h.crc_bit = 1
header = h.render(version, b"\x01", 0)
h2 = ExtendedTagHeader()
h2.parse(BytesIO(header), version)
assert h.crc == h2.crc
def testInvalidFlagBits(self):
for bad_flags in [b"\x00\x20", b"\x01\x01"]:
h = ExtendedTagHeader()
try:
h.parse(BytesIO(b"\x00\x00\x00\xff" + bad_flags), (2, 4, 0))
except TagException:
pass
else:
assert not("Bad ExtendedTagHeader flags, expected "
"TagException")
class TestFrameHeader(unittest.TestCase):
def testCtor(self):
h = FrameHeader(b"TIT2", ID3_DEFAULT_VERSION)
assert (h.size == 10)
assert (h.id == b"TIT2")
assert (h.data_size == 0)
assert (h._flags == [0] * 16)
h = FrameHeader(b"TIT2", (2, 3, 0))
assert (h.size == 10)
assert (h.id == b"TIT2")
assert (h.data_size == 0)
assert (h._flags == [0] * 16)
h = FrameHeader(b"TIT2", (2, 2, 0))
assert (h.size == 6)
assert (h.id == b"TIT2")
assert (h.data_size == 0)
assert (h._flags == [0] * 16)
def testBitMask(self):
for v in [(2, 2, 0), (2, 3, 0)]:
h = FrameHeader(b"TXXX", v)
assert (h.TAG_ALTER == 0)
assert (h.FILE_ALTER == 1)
assert (h.READ_ONLY == 2)
assert (h.COMPRESSED == 8)
assert (h.ENCRYPTED == 9)
assert (h.GROUPED == 10)
assert (h.UNSYNC == 14)
assert (h.DATA_LEN == 4)
for v in [(2, 4, 0), (1, 0, 0), (1, 1, 0)]:
h = FrameHeader(b"TXXX", v)
assert (h.TAG_ALTER == 1)
assert (h.FILE_ALTER == 2)
assert (h.READ_ONLY == 3)
assert (h.COMPRESSED == 12)
assert (h.ENCRYPTED == 13)
assert (h.GROUPED == 9)
assert (h.UNSYNC == 14)
assert (h.DATA_LEN == 15)
for v in [(2, 5, 0), (3, 0, 0)]:
try:
h = FrameHeader(b"TIT2", v)
except ValueError:
pass
else:
assert not("Expected a ValueError from invalid version, "
"but got success")
for v in [1, "yes", "no", True, 23]:
h = FrameHeader(b"APIC", (2, 4, 0))
h.tag_alter = v
h.file_alter = v
h.read_only = v
h.compressed = v
h.encrypted = v
h.grouped = v
h.unsync = v
h.data_length_indicator = v
assert (h.tag_alter == 1)
assert (h.file_alter == 1)
assert (h.read_only == 1)
assert (h.compressed == 1)
assert (h.encrypted == 1)
assert (h.grouped == 1)
assert (h.unsync == 1)
assert (h.data_length_indicator == 1)
for v in [0, False, None]:
h = FrameHeader(b"APIC", (2, 4, 0))
h.tag_alter = v
h.file_alter = v
h.read_only = v
h.compressed = v
h.encrypted = v
h.grouped = v
h.unsync = v
h.data_length_indicator = v
assert (h.tag_alter == 0)
assert (h.file_alter == 0)
assert (h.read_only == 0)
assert (h.compressed == 0)
assert (h.encrypted == 0)
assert (h.grouped == 0)
assert (h.unsync == 0)
assert (h.data_length_indicator == 0)
h1 = FrameHeader(b"APIC", (2, 3, 0))
h1.tag_alter = True
h1.grouped = True
h1.file_alter = 1
h1.encrypted = None
h1.compressed = 4
h1.data_length_indicator = 0
h1.read_only = 1
h1.unsync = 1
h2 = FrameHeader(b"APIC", (2, 4, 0))
assert (h2.tag_alter == 0)
assert (h2.grouped == 0)
h2.copyFlags(h1)
assert (h2.tag_alter)
assert (h2.grouped)
assert (h2.file_alter)
assert not(h2.encrypted)
assert (h2.compressed)
assert not(h2.data_length_indicator)
assert (h2.read_only)
assert (h2.unsync)
def testValidFrameId(self):
for id in [b"", b"a", b"tx", b"tit", b"TIT", b"Tit2", b"aPic"]:
assert not(FrameHeader._isValidFrameId(id))
for id in [b"TIT2", b"APIC", b"1234"]:
assert FrameHeader._isValidFrameId(id)
def testRenderWithUnsyncTrue(self):
h = FrameHeader(b"TIT2", ID3_DEFAULT_VERSION)
h.unsync = True
with pytest.raises(NotImplementedError):
h.render(100)
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