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import importlib
from bz2 import decompress
import pytest
from snakeoil.compression import _bzip2
from snakeoil.process import CommandNotFound, find_binary
from snakeoil.test import hide_imports
from . import Base, hide_binary
def test_no_native():
with hide_imports('bz2'):
importlib.reload(_bzip2)
assert not _bzip2.native
def test_missing_bzip2_binary():
with hide_binary('bzip2'):
with pytest.raises(CommandNotFound, match='bzip2'):
importlib.reload(_bzip2)
def test_missing_lbzip2_binary():
with hide_binary('lbzip2'):
importlib.reload(_bzip2)
assert not _bzip2.parallelizable
class Bzip2Base(Base):
module = 'bzip2'
decompressed_test_data = b'Some text here\n'
compressed_test_data = (
b'BZh91AY&SY\x1bM\x00\x02\x00\x00\x01\xd3\x80\x00\x10@\x00\x08\x00\x02'
b'B\x94@ \x00"\r\x03\xd4\x0c \t!\x1b\xb7\x80u/\x17rE8P\x90\x1bM\x00\x02'
)
def decompress(self, data: bytes) -> bytes:
return decompress(data)
class TestStdlib(Bzip2Base):
@pytest.fixture(autouse=True, scope='class')
def _setup(self):
try:
find_binary('bzip2')
except CommandNotFound:
pytest.skip('bzip2 binary not found')
with hide_binary('lbzip2'):
importlib.reload(_bzip2)
yield
class TestBzip2(Bzip2Base):
@pytest.fixture(autouse=True, scope='class')
def _setup(self):
with hide_binary('lbzip2'):
importlib.reload(_bzip2)
yield
class TestLbzip2(Bzip2Base):
@pytest.fixture(autouse=True, scope='class')
def _setup(self):
try:
find_binary('lbzip2')
except CommandNotFound:
pytest.skip('lbzip2 binary not found')
importlib.reload(_bzip2)
def test_bad_level(self):
with pytest.raises(ValueError, match='unknown option "-0"'):
_bzip2.compress_data(self.decompressed_test_data, level=90, parallelize=True)
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