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import pytest
from eyed3.utils.binfuncs import *
def test_bytes2bin():
# test ones and zeros, sz==8
for i in range(1, 11):
zeros = bytes2bin(b"\x00" * i)
ones = bytes2bin(b"\xFF" * i)
assert len(zeros) == (8 * i) and len(zeros) == len(ones)
for i in range(len(zeros)):
assert zeros[i] == 0
assert ones[i] == 1
# test 'sz' bounds checking
with pytest.raises(ValueError):
bytes2bin(b"a", -1)
with pytest.raises(ValueError):
bytes2bin(b"a", 0)
with pytest.raises(ValueError):
bytes2bin(b"a", 9)
# Test 'sz'
for sz in range(1, 9):
res = bytes2bin(b"\x00\xFF", sz=sz)
assert len(res) == 2 * sz
assert res[:sz] == [0] * sz
assert res[sz:] == [1] * sz
def test_bin2bytes():
res = bin2bytes([0])
assert len(res) == 1
assert ord(res) == 0
res = bin2bytes([1] * 8)
assert len(res) == 1
assert ord(res) == 255
def test_bin2dec():
assert bin2dec([1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0]) == 2730
def test_bytes2dec():
assert bytes2dec(b"\x00\x11\x22\x33") == 1122867
def test_dec2bin():
assert dec2bin(3036790792) == [1, 0, 1, 1, 0, 1, 0, 1,
0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 0]
assert dec2bin(1, p=8) == [0, 0, 0, 0, 0, 0, 0, 1]
def test_dec2bytes():
assert dec2bytes(ord(b"a")) == b"\x61"
def test_bin2syncsafe():
with pytest.raises(ValueError):
bin2synchsafe(bytes2bin(b"\xff\xff\xff\xff"))
with pytest.raises(ValueError):
bin2synchsafe([0] * 33)
assert bin2synchsafe([1] * 7) == [1] * 7
assert bin2synchsafe(dec2bin(255)) == [0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1,
0, 1, 1, 1, 1, 1, 1, 1]
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