mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
5ef64dbcdb
These are the commits from https://github.com/ahgamut/cpython/tree/cosmo_py36 squashed for simplicity. Also included is the pyconfig.h used for compilation. The pyconfig.h has to be changed manually in case Cosmopolitan gets new features.
1014 lines
37 KiB
Python
1014 lines
37 KiB
Python
from test import support
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from test.support import bigmemtest, _4G
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import unittest
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from io import BytesIO, DEFAULT_BUFFER_SIZE
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import os
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import pickle
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import glob
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import pathlib
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import random
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import shutil
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import subprocess
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import sys
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from test.support import unlink
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import _compression
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import sys
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try:
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import _thread
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import threading
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except ImportError:
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threading = None
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# Skip tests if the bz2 module doesn't exist.
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bz2 = support.import_module('bz2')
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from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor
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has_cmdline_bunzip2 = None
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def ext_decompress(data):
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global has_cmdline_bunzip2
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if has_cmdline_bunzip2 is None:
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has_cmdline_bunzip2 = bool(shutil.which('bunzip2'))
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if has_cmdline_bunzip2:
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return subprocess.check_output(['bunzip2'], input=data)
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else:
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return bz2.decompress(data)
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class BaseTest(unittest.TestCase):
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"Base for other testcases."
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TEXT_LINES = [
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b'root:x:0:0:root:/root:/bin/bash\n',
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b'bin:x:1:1:bin:/bin:\n',
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b'daemon:x:2:2:daemon:/sbin:\n',
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b'adm:x:3:4:adm:/var/adm:\n',
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b'lp:x:4:7:lp:/var/spool/lpd:\n',
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b'sync:x:5:0:sync:/sbin:/bin/sync\n',
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b'shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown\n',
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b'halt:x:7:0:halt:/sbin:/sbin/halt\n',
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b'mail:x:8:12:mail:/var/spool/mail:\n',
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b'news:x:9:13:news:/var/spool/news:\n',
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b'uucp:x:10:14:uucp:/var/spool/uucp:\n',
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b'operator:x:11:0:operator:/root:\n',
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b'games:x:12:100:games:/usr/games:\n',
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b'gopher:x:13:30:gopher:/usr/lib/gopher-data:\n',
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b'ftp:x:14:50:FTP User:/var/ftp:/bin/bash\n',
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b'nobody:x:65534:65534:Nobody:/home:\n',
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b'postfix:x:100:101:postfix:/var/spool/postfix:\n',
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b'niemeyer:x:500:500::/home/niemeyer:/bin/bash\n',
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b'postgres:x:101:102:PostgreSQL Server:/var/lib/pgsql:/bin/bash\n',
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b'mysql:x:102:103:MySQL server:/var/lib/mysql:/bin/bash\n',
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b'www:x:103:104::/var/www:/bin/false\n',
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]
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TEXT = b''.join(TEXT_LINES)
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DATA = b'BZh91AY&SY.\xc8N\x18\x00\x01>_\x80\x00\x10@\x02\xff\xf0\x01\x07n\x00?\xe7\xff\xe00\x01\x99\xaa\x00\xc0\x03F\x86\x8c#&\x83F\x9a\x03\x06\xa6\xd0\xa6\x93M\x0fQ\xa7\xa8\x06\x804hh\x12$\x11\xa4i4\xf14S\xd2<Q\xb5\x0fH\xd3\xd4\xdd\xd5\x87\xbb\xf8\x94\r\x8f\xafI\x12\xe1\xc9\xf8/E\x00pu\x89\x12]\xc9\xbbDL\nQ\x0e\t1\x12\xdf\xa0\xc0\x97\xac2O9\x89\x13\x94\x0e\x1c7\x0ed\x95I\x0c\xaaJ\xa4\x18L\x10\x05#\x9c\xaf\xba\xbc/\x97\x8a#C\xc8\xe1\x8cW\xf9\xe2\xd0\xd6M\xa7\x8bXa<e\x84t\xcbL\xb3\xa7\xd9\xcd\xd1\xcb\x84.\xaf\xb3\xab\xab\xad`n}\xa0lh\tE,\x8eZ\x15\x17VH>\x88\xe5\xcd9gd6\x0b\n\xe9\x9b\xd5\x8a\x99\xf7\x08.K\x8ev\xfb\xf7xw\xbb\xdf\xa1\x92\xf1\xdd|/";\xa2\xba\x9f\xd5\xb1#A\xb6\xf6\xb3o\xc9\xc5y\\\xebO\xe7\x85\x9a\xbc\xb6f8\x952\xd5\xd7"%\x89>V,\xf7\xa6z\xe2\x9f\xa3\xdf\x11\x11"\xd6E)I\xa9\x13^\xca\xf3r\xd0\x03U\x922\xf26\xec\xb6\xed\x8b\xc3U\x13\x9d\xc5\x170\xa4\xfa^\x92\xacDF\x8a\x97\xd6\x19\xfe\xdd\xb8\xbd\x1a\x9a\x19\xa3\x80ankR\x8b\xe5\xd83]\xa9\xc6\x08\x82f\xf6\xb9"6l$\xb8j@\xc0\x8a\xb0l1..\xbak\x83ls\x15\xbc\xf4\xc1\x13\xbe\xf8E\xb8\x9d\r\xa8\x9dk\x84\xd3n\xfa\xacQ\x07\xb1%y\xaav\xb4\x08\xe0z\x1b\x16\xf5\x04\xe9\xcc\xb9\x08z\x1en7.G\xfc]\xc9\x14\xe1B@\xbb!8`'
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EMPTY_DATA = b'BZh9\x17rE8P\x90\x00\x00\x00\x00'
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BAD_DATA = b'this is not a valid bzip2 file'
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# Some tests need more than one block of uncompressed data. Since one block
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# is at least 100 kB, we gather some data dynamically and compress it.
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# Note that this assumes that compression works correctly, so we cannot
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# simply use the bigger test data for all tests.
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test_size = 0
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BIG_TEXT = bytearray(128*1024)
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for fname in glob.glob(os.path.join(os.path.dirname(__file__), '*.py')):
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with open(fname, 'rb') as fh:
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test_size += fh.readinto(memoryview(BIG_TEXT)[test_size:])
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if test_size > 128*1024:
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break
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BIG_DATA = bz2.compress(BIG_TEXT, compresslevel=1)
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def setUp(self):
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self.filename = support.TESTFN
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def tearDown(self):
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if os.path.isfile(self.filename):
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os.unlink(self.filename)
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class BZ2FileTest(BaseTest):
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"Test the BZ2File class."
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def createTempFile(self, streams=1, suffix=b""):
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with open(self.filename, "wb") as f:
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f.write(self.DATA * streams)
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f.write(suffix)
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def testBadArgs(self):
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self.assertRaises(TypeError, BZ2File, 123.456)
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self.assertRaises(ValueError, BZ2File, os.devnull, "z")
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self.assertRaises(ValueError, BZ2File, os.devnull, "rx")
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self.assertRaises(ValueError, BZ2File, os.devnull, "rbt")
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self.assertRaises(ValueError, BZ2File, os.devnull, compresslevel=0)
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self.assertRaises(ValueError, BZ2File, os.devnull, compresslevel=10)
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def testRead(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.read, float())
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self.assertEqual(bz2f.read(), self.TEXT)
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def testReadBadFile(self):
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self.createTempFile(streams=0, suffix=self.BAD_DATA)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(OSError, bz2f.read)
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def testReadMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.read, float())
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self.assertEqual(bz2f.read(), self.TEXT * 5)
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def testReadMonkeyMultiStream(self):
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# Test BZ2File.read() on a multi-stream archive where a stream
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# boundary coincides with the end of the raw read buffer.
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buffer_size = _compression.BUFFER_SIZE
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_compression.BUFFER_SIZE = len(self.DATA)
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try:
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.read, float())
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self.assertEqual(bz2f.read(), self.TEXT * 5)
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finally:
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_compression.BUFFER_SIZE = buffer_size
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def testReadTrailingJunk(self):
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self.createTempFile(suffix=self.BAD_DATA)
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with BZ2File(self.filename) as bz2f:
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self.assertEqual(bz2f.read(), self.TEXT)
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def testReadMultiStreamTrailingJunk(self):
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self.createTempFile(streams=5, suffix=self.BAD_DATA)
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with BZ2File(self.filename) as bz2f:
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self.assertEqual(bz2f.read(), self.TEXT * 5)
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def testRead0(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.read, float())
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self.assertEqual(bz2f.read(0), b"")
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def testReadChunk10(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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text = b''
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while True:
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str = bz2f.read(10)
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if not str:
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break
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text += str
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self.assertEqual(text, self.TEXT)
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def testReadChunk10MultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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text = b''
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while True:
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str = bz2f.read(10)
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if not str:
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break
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text += str
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self.assertEqual(text, self.TEXT * 5)
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def testRead100(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertEqual(bz2f.read(100), self.TEXT[:100])
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def testPeek(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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pdata = bz2f.peek()
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self.assertNotEqual(len(pdata), 0)
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self.assertTrue(self.TEXT.startswith(pdata))
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self.assertEqual(bz2f.read(), self.TEXT)
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def testReadInto(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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n = 128
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b = bytearray(n)
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self.assertEqual(bz2f.readinto(b), n)
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self.assertEqual(b, self.TEXT[:n])
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n = len(self.TEXT) - n
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b = bytearray(len(self.TEXT))
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self.assertEqual(bz2f.readinto(b), n)
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self.assertEqual(b[:n], self.TEXT[-n:])
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def testReadLine(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.readline, None)
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for line in self.TEXT_LINES:
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self.assertEqual(bz2f.readline(), line)
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def testReadLineMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.readline, None)
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for line in self.TEXT_LINES * 5:
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self.assertEqual(bz2f.readline(), line)
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def testReadLines(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.readlines, None)
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self.assertEqual(bz2f.readlines(), self.TEXT_LINES)
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def testReadLinesMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.readlines, None)
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self.assertEqual(bz2f.readlines(), self.TEXT_LINES * 5)
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def testIterator(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertEqual(list(iter(bz2f)), self.TEXT_LINES)
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def testIteratorMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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self.assertEqual(list(iter(bz2f)), self.TEXT_LINES * 5)
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def testClosedIteratorDeadlock(self):
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# Issue #3309: Iteration on a closed BZ2File should release the lock.
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self.createTempFile()
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bz2f = BZ2File(self.filename)
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bz2f.close()
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self.assertRaises(ValueError, next, bz2f)
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# This call will deadlock if the above call failed to release the lock.
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self.assertRaises(ValueError, bz2f.readlines)
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def testWrite(self):
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with BZ2File(self.filename, "w") as bz2f:
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self.assertRaises(TypeError, bz2f.write)
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bz2f.write(self.TEXT)
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with open(self.filename, 'rb') as f:
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self.assertEqual(ext_decompress(f.read()), self.TEXT)
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def testWriteChunks10(self):
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with BZ2File(self.filename, "w") as bz2f:
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n = 0
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while True:
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str = self.TEXT[n*10:(n+1)*10]
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if not str:
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break
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bz2f.write(str)
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n += 1
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with open(self.filename, 'rb') as f:
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self.assertEqual(ext_decompress(f.read()), self.TEXT)
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def testWriteNonDefaultCompressLevel(self):
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expected = bz2.compress(self.TEXT, compresslevel=5)
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with BZ2File(self.filename, "w", compresslevel=5) as bz2f:
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bz2f.write(self.TEXT)
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with open(self.filename, "rb") as f:
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self.assertEqual(f.read(), expected)
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def testWriteLines(self):
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with BZ2File(self.filename, "w") as bz2f:
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self.assertRaises(TypeError, bz2f.writelines)
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bz2f.writelines(self.TEXT_LINES)
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# Issue #1535500: Calling writelines() on a closed BZ2File
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# should raise an exception.
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self.assertRaises(ValueError, bz2f.writelines, ["a"])
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with open(self.filename, 'rb') as f:
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self.assertEqual(ext_decompress(f.read()), self.TEXT)
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def testWriteMethodsOnReadOnlyFile(self):
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with BZ2File(self.filename, "w") as bz2f:
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bz2f.write(b"abc")
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with BZ2File(self.filename, "r") as bz2f:
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self.assertRaises(OSError, bz2f.write, b"a")
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self.assertRaises(OSError, bz2f.writelines, [b"a"])
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def testAppend(self):
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with BZ2File(self.filename, "w") as bz2f:
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self.assertRaises(TypeError, bz2f.write)
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bz2f.write(self.TEXT)
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with BZ2File(self.filename, "a") as bz2f:
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self.assertRaises(TypeError, bz2f.write)
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bz2f.write(self.TEXT)
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with open(self.filename, 'rb') as f:
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self.assertEqual(ext_decompress(f.read()), self.TEXT * 2)
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def testSeekForward(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.seek)
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bz2f.seek(150)
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self.assertEqual(bz2f.read(), self.TEXT[150:])
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def testSeekForwardAcrossStreams(self):
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self.createTempFile(streams=2)
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with BZ2File(self.filename) as bz2f:
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self.assertRaises(TypeError, bz2f.seek)
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bz2f.seek(len(self.TEXT) + 150)
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self.assertEqual(bz2f.read(), self.TEXT[150:])
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def testSeekBackwards(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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bz2f.read(500)
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bz2f.seek(-150, 1)
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self.assertEqual(bz2f.read(), self.TEXT[500-150:])
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def testSeekBackwardsAcrossStreams(self):
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self.createTempFile(streams=2)
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with BZ2File(self.filename) as bz2f:
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readto = len(self.TEXT) + 100
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while readto > 0:
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readto -= len(bz2f.read(readto))
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bz2f.seek(-150, 1)
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self.assertEqual(bz2f.read(), self.TEXT[100-150:] + self.TEXT)
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def testSeekBackwardsFromEnd(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(-150, 2)
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self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:])
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def testSeekBackwardsFromEndAcrossStreams(self):
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self.createTempFile(streams=2)
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(-1000, 2)
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self.assertEqual(bz2f.read(), (self.TEXT * 2)[-1000:])
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def testSeekPostEnd(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(150000)
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self.assertEqual(bz2f.tell(), len(self.TEXT))
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self.assertEqual(bz2f.read(), b"")
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def testSeekPostEndMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(150000)
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self.assertEqual(bz2f.tell(), len(self.TEXT) * 5)
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self.assertEqual(bz2f.read(), b"")
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def testSeekPostEndTwice(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(150000)
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bz2f.seek(150000)
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self.assertEqual(bz2f.tell(), len(self.TEXT))
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self.assertEqual(bz2f.read(), b"")
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def testSeekPostEndTwiceMultiStream(self):
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self.createTempFile(streams=5)
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(150000)
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bz2f.seek(150000)
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self.assertEqual(bz2f.tell(), len(self.TEXT) * 5)
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self.assertEqual(bz2f.read(), b"")
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def testSeekPreStart(self):
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(-150)
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self.assertEqual(bz2f.tell(), 0)
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self.assertEqual(bz2f.read(), self.TEXT)
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def testSeekPreStartMultiStream(self):
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self.createTempFile(streams=2)
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with BZ2File(self.filename) as bz2f:
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bz2f.seek(-150)
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self.assertEqual(bz2f.tell(), 0)
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self.assertEqual(bz2f.read(), self.TEXT * 2)
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def testFileno(self):
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self.createTempFile()
|
|
with open(self.filename, 'rb') as rawf:
|
|
bz2f = BZ2File(rawf)
|
|
try:
|
|
self.assertEqual(bz2f.fileno(), rawf.fileno())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.fileno)
|
|
|
|
def testSeekable(self):
|
|
bz2f = BZ2File(BytesIO(self.DATA))
|
|
try:
|
|
self.assertTrue(bz2f.seekable())
|
|
bz2f.read()
|
|
self.assertTrue(bz2f.seekable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.seekable)
|
|
|
|
bz2f = BZ2File(BytesIO(), "w")
|
|
try:
|
|
self.assertFalse(bz2f.seekable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.seekable)
|
|
|
|
src = BytesIO(self.DATA)
|
|
src.seekable = lambda: False
|
|
bz2f = BZ2File(src)
|
|
try:
|
|
self.assertFalse(bz2f.seekable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.seekable)
|
|
|
|
def testReadable(self):
|
|
bz2f = BZ2File(BytesIO(self.DATA))
|
|
try:
|
|
self.assertTrue(bz2f.readable())
|
|
bz2f.read()
|
|
self.assertTrue(bz2f.readable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.readable)
|
|
|
|
bz2f = BZ2File(BytesIO(), "w")
|
|
try:
|
|
self.assertFalse(bz2f.readable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.readable)
|
|
|
|
def testWritable(self):
|
|
bz2f = BZ2File(BytesIO(self.DATA))
|
|
try:
|
|
self.assertFalse(bz2f.writable())
|
|
bz2f.read()
|
|
self.assertFalse(bz2f.writable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.writable)
|
|
|
|
bz2f = BZ2File(BytesIO(), "w")
|
|
try:
|
|
self.assertTrue(bz2f.writable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.writable)
|
|
|
|
def testOpenDel(self):
|
|
self.createTempFile()
|
|
for i in range(10000):
|
|
o = BZ2File(self.filename)
|
|
del o
|
|
|
|
def testOpenNonexistent(self):
|
|
self.assertRaises(OSError, BZ2File, "/non/existent")
|
|
|
|
def testReadlinesNoNewline(self):
|
|
# Issue #1191043: readlines() fails on a file containing no newline.
|
|
data = b'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t'
|
|
with open(self.filename, "wb") as f:
|
|
f.write(data)
|
|
with BZ2File(self.filename) as bz2f:
|
|
lines = bz2f.readlines()
|
|
self.assertEqual(lines, [b'Test'])
|
|
with BZ2File(self.filename) as bz2f:
|
|
xlines = list(bz2f.readlines())
|
|
self.assertEqual(xlines, [b'Test'])
|
|
|
|
def testContextProtocol(self):
|
|
f = None
|
|
with BZ2File(self.filename, "wb") as f:
|
|
f.write(b"xxx")
|
|
f = BZ2File(self.filename, "rb")
|
|
f.close()
|
|
try:
|
|
with f:
|
|
pass
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("__enter__ on a closed file didn't raise an exception")
|
|
try:
|
|
with BZ2File(self.filename, "wb") as f:
|
|
1/0
|
|
except ZeroDivisionError:
|
|
pass
|
|
else:
|
|
self.fail("1/0 didn't raise an exception")
|
|
|
|
@unittest.skipUnless(threading, 'Threading required for this test.')
|
|
def testThreading(self):
|
|
# Issue #7205: Using a BZ2File from several threads shouldn't deadlock.
|
|
data = b"1" * 2**20
|
|
nthreads = 10
|
|
with BZ2File(self.filename, 'wb') as f:
|
|
def comp():
|
|
for i in range(5):
|
|
f.write(data)
|
|
threads = [threading.Thread(target=comp) for i in range(nthreads)]
|
|
with support.start_threads(threads):
|
|
pass
|
|
|
|
def testWithoutThreading(self):
|
|
module = support.import_fresh_module("bz2", blocked=("threading",))
|
|
with module.BZ2File(self.filename, "wb") as f:
|
|
f.write(b"abc")
|
|
with module.BZ2File(self.filename, "rb") as f:
|
|
self.assertEqual(f.read(), b"abc")
|
|
|
|
def testMixedIterationAndReads(self):
|
|
self.createTempFile()
|
|
linelen = len(self.TEXT_LINES[0])
|
|
halflen = linelen // 2
|
|
with BZ2File(self.filename) as bz2f:
|
|
bz2f.read(halflen)
|
|
self.assertEqual(next(bz2f), self.TEXT_LINES[0][halflen:])
|
|
self.assertEqual(bz2f.read(), self.TEXT[linelen:])
|
|
with BZ2File(self.filename) as bz2f:
|
|
bz2f.readline()
|
|
self.assertEqual(next(bz2f), self.TEXT_LINES[1])
|
|
self.assertEqual(bz2f.readline(), self.TEXT_LINES[2])
|
|
with BZ2File(self.filename) as bz2f:
|
|
bz2f.readlines()
|
|
self.assertRaises(StopIteration, next, bz2f)
|
|
self.assertEqual(bz2f.readlines(), [])
|
|
|
|
def testMultiStreamOrdering(self):
|
|
# Test the ordering of streams when reading a multi-stream archive.
|
|
data1 = b"foo" * 1000
|
|
data2 = b"bar" * 1000
|
|
with BZ2File(self.filename, "w") as bz2f:
|
|
bz2f.write(data1)
|
|
with BZ2File(self.filename, "a") as bz2f:
|
|
bz2f.write(data2)
|
|
with BZ2File(self.filename) as bz2f:
|
|
self.assertEqual(bz2f.read(), data1 + data2)
|
|
|
|
def testOpenBytesFilename(self):
|
|
str_filename = self.filename
|
|
try:
|
|
bytes_filename = str_filename.encode("ascii")
|
|
except UnicodeEncodeError:
|
|
self.skipTest("Temporary file name needs to be ASCII")
|
|
with BZ2File(bytes_filename, "wb") as f:
|
|
f.write(self.DATA)
|
|
with BZ2File(bytes_filename, "rb") as f:
|
|
self.assertEqual(f.read(), self.DATA)
|
|
# Sanity check that we are actually operating on the right file.
|
|
with BZ2File(str_filename, "rb") as f:
|
|
self.assertEqual(f.read(), self.DATA)
|
|
|
|
def testOpenPathLikeFilename(self):
|
|
filename = pathlib.Path(self.filename)
|
|
with BZ2File(filename, "wb") as f:
|
|
f.write(self.DATA)
|
|
with BZ2File(filename, "rb") as f:
|
|
self.assertEqual(f.read(), self.DATA)
|
|
|
|
def testDecompressLimited(self):
|
|
"""Decompressed data buffering should be limited"""
|
|
bomb = bz2.compress(b'\0' * int(2e6), compresslevel=9)
|
|
self.assertLess(len(bomb), _compression.BUFFER_SIZE)
|
|
|
|
decomp = BZ2File(BytesIO(bomb))
|
|
self.assertEqual(decomp.read(1), b'\0')
|
|
max_decomp = 1 + DEFAULT_BUFFER_SIZE
|
|
self.assertLessEqual(decomp._buffer.raw.tell(), max_decomp,
|
|
"Excessive amount of data was decompressed")
|
|
|
|
|
|
# Tests for a BZ2File wrapping another file object:
|
|
|
|
def testReadBytesIO(self):
|
|
with BytesIO(self.DATA) as bio:
|
|
with BZ2File(bio) as bz2f:
|
|
self.assertRaises(TypeError, bz2f.read, float())
|
|
self.assertEqual(bz2f.read(), self.TEXT)
|
|
self.assertFalse(bio.closed)
|
|
|
|
def testPeekBytesIO(self):
|
|
with BytesIO(self.DATA) as bio:
|
|
with BZ2File(bio) as bz2f:
|
|
pdata = bz2f.peek()
|
|
self.assertNotEqual(len(pdata), 0)
|
|
self.assertTrue(self.TEXT.startswith(pdata))
|
|
self.assertEqual(bz2f.read(), self.TEXT)
|
|
|
|
def testWriteBytesIO(self):
|
|
with BytesIO() as bio:
|
|
with BZ2File(bio, "w") as bz2f:
|
|
self.assertRaises(TypeError, bz2f.write)
|
|
bz2f.write(self.TEXT)
|
|
self.assertEqual(ext_decompress(bio.getvalue()), self.TEXT)
|
|
self.assertFalse(bio.closed)
|
|
|
|
def testSeekForwardBytesIO(self):
|
|
with BytesIO(self.DATA) as bio:
|
|
with BZ2File(bio) as bz2f:
|
|
self.assertRaises(TypeError, bz2f.seek)
|
|
bz2f.seek(150)
|
|
self.assertEqual(bz2f.read(), self.TEXT[150:])
|
|
|
|
def testSeekBackwardsBytesIO(self):
|
|
with BytesIO(self.DATA) as bio:
|
|
with BZ2File(bio) as bz2f:
|
|
bz2f.read(500)
|
|
bz2f.seek(-150, 1)
|
|
self.assertEqual(bz2f.read(), self.TEXT[500-150:])
|
|
|
|
def test_read_truncated(self):
|
|
# Drop the eos_magic field (6 bytes) and CRC (4 bytes).
|
|
truncated = self.DATA[:-10]
|
|
with BZ2File(BytesIO(truncated)) as f:
|
|
self.assertRaises(EOFError, f.read)
|
|
with BZ2File(BytesIO(truncated)) as f:
|
|
self.assertEqual(f.read(len(self.TEXT)), self.TEXT)
|
|
self.assertRaises(EOFError, f.read, 1)
|
|
# Incomplete 4-byte file header, and block header of at least 146 bits.
|
|
for i in range(22):
|
|
with BZ2File(BytesIO(truncated[:i])) as f:
|
|
self.assertRaises(EOFError, f.read, 1)
|
|
|
|
|
|
class BZ2CompressorTest(BaseTest):
|
|
def testCompress(self):
|
|
bz2c = BZ2Compressor()
|
|
self.assertRaises(TypeError, bz2c.compress)
|
|
data = bz2c.compress(self.TEXT)
|
|
data += bz2c.flush()
|
|
self.assertEqual(ext_decompress(data), self.TEXT)
|
|
|
|
def testCompressEmptyString(self):
|
|
bz2c = BZ2Compressor()
|
|
data = bz2c.compress(b'')
|
|
data += bz2c.flush()
|
|
self.assertEqual(data, self.EMPTY_DATA)
|
|
|
|
def testCompressChunks10(self):
|
|
bz2c = BZ2Compressor()
|
|
n = 0
|
|
data = b''
|
|
while True:
|
|
str = self.TEXT[n*10:(n+1)*10]
|
|
if not str:
|
|
break
|
|
data += bz2c.compress(str)
|
|
n += 1
|
|
data += bz2c.flush()
|
|
self.assertEqual(ext_decompress(data), self.TEXT)
|
|
|
|
@bigmemtest(size=_4G + 100, memuse=2)
|
|
def testCompress4G(self, size):
|
|
# "Test BZ2Compressor.compress()/flush() with >4GiB input"
|
|
bz2c = BZ2Compressor()
|
|
data = b"x" * size
|
|
try:
|
|
compressed = bz2c.compress(data)
|
|
compressed += bz2c.flush()
|
|
finally:
|
|
data = None # Release memory
|
|
data = bz2.decompress(compressed)
|
|
try:
|
|
self.assertEqual(len(data), size)
|
|
self.assertEqual(len(data.strip(b"x")), 0)
|
|
finally:
|
|
data = None
|
|
|
|
def testPickle(self):
|
|
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.assertRaises(TypeError):
|
|
pickle.dumps(BZ2Compressor(), proto)
|
|
|
|
|
|
class BZ2DecompressorTest(BaseTest):
|
|
def test_Constructor(self):
|
|
self.assertRaises(TypeError, BZ2Decompressor, 42)
|
|
|
|
def testDecompress(self):
|
|
bz2d = BZ2Decompressor()
|
|
self.assertRaises(TypeError, bz2d.decompress)
|
|
text = bz2d.decompress(self.DATA)
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressChunks10(self):
|
|
bz2d = BZ2Decompressor()
|
|
text = b''
|
|
n = 0
|
|
while True:
|
|
str = self.DATA[n*10:(n+1)*10]
|
|
if not str:
|
|
break
|
|
text += bz2d.decompress(str)
|
|
n += 1
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressUnusedData(self):
|
|
bz2d = BZ2Decompressor()
|
|
unused_data = b"this is unused data"
|
|
text = bz2d.decompress(self.DATA+unused_data)
|
|
self.assertEqual(text, self.TEXT)
|
|
self.assertEqual(bz2d.unused_data, unused_data)
|
|
|
|
def testEOFError(self):
|
|
bz2d = BZ2Decompressor()
|
|
text = bz2d.decompress(self.DATA)
|
|
self.assertRaises(EOFError, bz2d.decompress, b"anything")
|
|
self.assertRaises(EOFError, bz2d.decompress, b"")
|
|
|
|
@bigmemtest(size=_4G + 100, memuse=3.3)
|
|
def testDecompress4G(self, size):
|
|
# "Test BZ2Decompressor.decompress() with >4GiB input"
|
|
blocksize = 10 * 1024 * 1024
|
|
block = random.getrandbits(blocksize * 8).to_bytes(blocksize, 'little')
|
|
try:
|
|
data = block * (size // blocksize + 1)
|
|
compressed = bz2.compress(data)
|
|
bz2d = BZ2Decompressor()
|
|
decompressed = bz2d.decompress(compressed)
|
|
self.assertTrue(decompressed == data)
|
|
finally:
|
|
data = None
|
|
compressed = None
|
|
decompressed = None
|
|
|
|
def testPickle(self):
|
|
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.assertRaises(TypeError):
|
|
pickle.dumps(BZ2Decompressor(), proto)
|
|
|
|
def testDecompressorChunksMaxsize(self):
|
|
bzd = BZ2Decompressor()
|
|
max_length = 100
|
|
out = []
|
|
|
|
# Feed some input
|
|
len_ = len(self.BIG_DATA) - 64
|
|
out.append(bzd.decompress(self.BIG_DATA[:len_],
|
|
max_length=max_length))
|
|
self.assertFalse(bzd.needs_input)
|
|
self.assertEqual(len(out[-1]), max_length)
|
|
|
|
# Retrieve more data without providing more input
|
|
out.append(bzd.decompress(b'', max_length=max_length))
|
|
self.assertFalse(bzd.needs_input)
|
|
self.assertEqual(len(out[-1]), max_length)
|
|
|
|
# Retrieve more data while providing more input
|
|
out.append(bzd.decompress(self.BIG_DATA[len_:],
|
|
max_length=max_length))
|
|
self.assertLessEqual(len(out[-1]), max_length)
|
|
|
|
# Retrieve remaining uncompressed data
|
|
while not bzd.eof:
|
|
out.append(bzd.decompress(b'', max_length=max_length))
|
|
self.assertLessEqual(len(out[-1]), max_length)
|
|
|
|
out = b"".join(out)
|
|
self.assertEqual(out, self.BIG_TEXT)
|
|
self.assertEqual(bzd.unused_data, b"")
|
|
|
|
def test_decompressor_inputbuf_1(self):
|
|
# Test reusing input buffer after moving existing
|
|
# contents to beginning
|
|
bzd = BZ2Decompressor()
|
|
out = []
|
|
|
|
# Create input buffer and fill it
|
|
self.assertEqual(bzd.decompress(self.DATA[:100],
|
|
max_length=0), b'')
|
|
|
|
# Retrieve some results, freeing capacity at beginning
|
|
# of input buffer
|
|
out.append(bzd.decompress(b'', 2))
|
|
|
|
# Add more data that fits into input buffer after
|
|
# moving existing data to beginning
|
|
out.append(bzd.decompress(self.DATA[100:105], 15))
|
|
|
|
# Decompress rest of data
|
|
out.append(bzd.decompress(self.DATA[105:]))
|
|
self.assertEqual(b''.join(out), self.TEXT)
|
|
|
|
def test_decompressor_inputbuf_2(self):
|
|
# Test reusing input buffer by appending data at the
|
|
# end right away
|
|
bzd = BZ2Decompressor()
|
|
out = []
|
|
|
|
# Create input buffer and empty it
|
|
self.assertEqual(bzd.decompress(self.DATA[:200],
|
|
max_length=0), b'')
|
|
out.append(bzd.decompress(b''))
|
|
|
|
# Fill buffer with new data
|
|
out.append(bzd.decompress(self.DATA[200:280], 2))
|
|
|
|
# Append some more data, not enough to require resize
|
|
out.append(bzd.decompress(self.DATA[280:300], 2))
|
|
|
|
# Decompress rest of data
|
|
out.append(bzd.decompress(self.DATA[300:]))
|
|
self.assertEqual(b''.join(out), self.TEXT)
|
|
|
|
def test_decompressor_inputbuf_3(self):
|
|
# Test reusing input buffer after extending it
|
|
|
|
bzd = BZ2Decompressor()
|
|
out = []
|
|
|
|
# Create almost full input buffer
|
|
out.append(bzd.decompress(self.DATA[:200], 5))
|
|
|
|
# Add even more data to it, requiring resize
|
|
out.append(bzd.decompress(self.DATA[200:300], 5))
|
|
|
|
# Decompress rest of data
|
|
out.append(bzd.decompress(self.DATA[300:]))
|
|
self.assertEqual(b''.join(out), self.TEXT)
|
|
|
|
def test_failure(self):
|
|
bzd = BZ2Decompressor()
|
|
self.assertRaises(Exception, bzd.decompress, self.BAD_DATA * 30)
|
|
# Previously, a second call could crash due to internal inconsistency
|
|
self.assertRaises(Exception, bzd.decompress, self.BAD_DATA * 30)
|
|
|
|
@support.refcount_test
|
|
def test_refleaks_in___init__(self):
|
|
gettotalrefcount = support.get_attribute(sys, 'gettotalrefcount')
|
|
bzd = BZ2Decompressor()
|
|
refs_before = gettotalrefcount()
|
|
for i in range(100):
|
|
bzd.__init__()
|
|
self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10)
|
|
|
|
|
|
class CompressDecompressTest(BaseTest):
|
|
def testCompress(self):
|
|
data = bz2.compress(self.TEXT)
|
|
self.assertEqual(ext_decompress(data), self.TEXT)
|
|
|
|
def testCompressEmptyString(self):
|
|
text = bz2.compress(b'')
|
|
self.assertEqual(text, self.EMPTY_DATA)
|
|
|
|
def testDecompress(self):
|
|
text = bz2.decompress(self.DATA)
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressEmpty(self):
|
|
text = bz2.decompress(b"")
|
|
self.assertEqual(text, b"")
|
|
|
|
def testDecompressToEmptyString(self):
|
|
text = bz2.decompress(self.EMPTY_DATA)
|
|
self.assertEqual(text, b'')
|
|
|
|
def testDecompressIncomplete(self):
|
|
self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10])
|
|
|
|
def testDecompressBadData(self):
|
|
self.assertRaises(OSError, bz2.decompress, self.BAD_DATA)
|
|
|
|
def testDecompressMultiStream(self):
|
|
text = bz2.decompress(self.DATA * 5)
|
|
self.assertEqual(text, self.TEXT * 5)
|
|
|
|
def testDecompressTrailingJunk(self):
|
|
text = bz2.decompress(self.DATA + self.BAD_DATA)
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressMultiStreamTrailingJunk(self):
|
|
text = bz2.decompress(self.DATA * 5 + self.BAD_DATA)
|
|
self.assertEqual(text, self.TEXT * 5)
|
|
|
|
|
|
class OpenTest(BaseTest):
|
|
"Test the open function."
|
|
|
|
def open(self, *args, **kwargs):
|
|
return bz2.open(*args, **kwargs)
|
|
|
|
def test_binary_modes(self):
|
|
for mode in ("wb", "xb"):
|
|
if mode == "xb":
|
|
unlink(self.filename)
|
|
with self.open(self.filename, mode) as f:
|
|
f.write(self.TEXT)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read())
|
|
self.assertEqual(file_data, self.TEXT)
|
|
with self.open(self.filename, "rb") as f:
|
|
self.assertEqual(f.read(), self.TEXT)
|
|
with self.open(self.filename, "ab") as f:
|
|
f.write(self.TEXT)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read())
|
|
self.assertEqual(file_data, self.TEXT * 2)
|
|
|
|
def test_implicit_binary_modes(self):
|
|
# Test implicit binary modes (no "b" or "t" in mode string).
|
|
for mode in ("w", "x"):
|
|
if mode == "x":
|
|
unlink(self.filename)
|
|
with self.open(self.filename, mode) as f:
|
|
f.write(self.TEXT)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read())
|
|
self.assertEqual(file_data, self.TEXT)
|
|
with self.open(self.filename, "r") as f:
|
|
self.assertEqual(f.read(), self.TEXT)
|
|
with self.open(self.filename, "a") as f:
|
|
f.write(self.TEXT)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read())
|
|
self.assertEqual(file_data, self.TEXT * 2)
|
|
|
|
def test_text_modes(self):
|
|
text = self.TEXT.decode("ascii")
|
|
text_native_eol = text.replace("\n", os.linesep)
|
|
for mode in ("wt", "xt"):
|
|
if mode == "xt":
|
|
unlink(self.filename)
|
|
with self.open(self.filename, mode) as f:
|
|
f.write(text)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read()).decode("ascii")
|
|
self.assertEqual(file_data, text_native_eol)
|
|
with self.open(self.filename, "rt") as f:
|
|
self.assertEqual(f.read(), text)
|
|
with self.open(self.filename, "at") as f:
|
|
f.write(text)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read()).decode("ascii")
|
|
self.assertEqual(file_data, text_native_eol * 2)
|
|
|
|
def test_x_mode(self):
|
|
for mode in ("x", "xb", "xt"):
|
|
unlink(self.filename)
|
|
with self.open(self.filename, mode) as f:
|
|
pass
|
|
with self.assertRaises(FileExistsError):
|
|
with self.open(self.filename, mode) as f:
|
|
pass
|
|
|
|
def test_fileobj(self):
|
|
with self.open(BytesIO(self.DATA), "r") as f:
|
|
self.assertEqual(f.read(), self.TEXT)
|
|
with self.open(BytesIO(self.DATA), "rb") as f:
|
|
self.assertEqual(f.read(), self.TEXT)
|
|
text = self.TEXT.decode("ascii")
|
|
with self.open(BytesIO(self.DATA), "rt") as f:
|
|
self.assertEqual(f.read(), text)
|
|
|
|
def test_bad_params(self):
|
|
# Test invalid parameter combinations.
|
|
self.assertRaises(ValueError,
|
|
self.open, self.filename, "wbt")
|
|
self.assertRaises(ValueError,
|
|
self.open, self.filename, "xbt")
|
|
self.assertRaises(ValueError,
|
|
self.open, self.filename, "rb", encoding="utf-8")
|
|
self.assertRaises(ValueError,
|
|
self.open, self.filename, "rb", errors="ignore")
|
|
self.assertRaises(ValueError,
|
|
self.open, self.filename, "rb", newline="\n")
|
|
|
|
def test_encoding(self):
|
|
# Test non-default encoding.
|
|
text = self.TEXT.decode("ascii")
|
|
text_native_eol = text.replace("\n", os.linesep)
|
|
with self.open(self.filename, "wt", encoding="utf-16-le") as f:
|
|
f.write(text)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = ext_decompress(f.read()).decode("utf-16-le")
|
|
self.assertEqual(file_data, text_native_eol)
|
|
with self.open(self.filename, "rt", encoding="utf-16-le") as f:
|
|
self.assertEqual(f.read(), text)
|
|
|
|
def test_encoding_error_handler(self):
|
|
# Test with non-default encoding error handler.
|
|
with self.open(self.filename, "wb") as f:
|
|
f.write(b"foo\xffbar")
|
|
with self.open(self.filename, "rt", encoding="ascii", errors="ignore") \
|
|
as f:
|
|
self.assertEqual(f.read(), "foobar")
|
|
|
|
def test_newline(self):
|
|
# Test with explicit newline (universal newline mode disabled).
|
|
text = self.TEXT.decode("ascii")
|
|
with self.open(self.filename, "wt", newline="\n") as f:
|
|
f.write(text)
|
|
with self.open(self.filename, "rt", newline="\r") as f:
|
|
self.assertEqual(f.readlines(), [text])
|
|
|
|
|
|
def test_main():
|
|
support.run_unittest(
|
|
BZ2FileTest,
|
|
BZ2CompressorTest,
|
|
BZ2DecompressorTest,
|
|
CompressDecompressTest,
|
|
OpenTest,
|
|
)
|
|
support.reap_children()
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|