mirror of https://github.com/python/cpython
526 lines
20 KiB
Python
526 lines
20 KiB
Python
#!/usr/bin/env python3
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from test import support
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from test.support import TESTFN, precisionbigmemtest, _4G
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import unittest
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from io import BytesIO
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import os
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import random
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import subprocess
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import sys
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try:
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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 = sys.platform not in ("win32", "os2emx")
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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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DATA_CRLF = b'BZh91AY&SY\xaez\xbbN\x00\x01H\xdf\x80\x00\x12@\x02\xff\xf0\x01\x07n\x00?\xe7\xff\xe0@\x01\xbc\xc6`\x86*\x8d=M\xa9\x9a\x86\xd0L@\x0fI\xa6!\xa1\x13\xc8\x88jdi\x8d@\x03@\x1a\x1a\x0c\x0c\x83 \x00\xc4h2\x19\x01\x82D\x84e\t\xe8\x99\x89\x19\x1ah\x00\r\x1a\x11\xaf\x9b\x0fG\xf5(\x1b\x1f?\t\x12\xcf\xb5\xfc\x95E\x00ps\x89\x12^\xa4\xdd\xa2&\x05(\x87\x04\x98\x89u\xe40%\xb6\x19\'\x8c\xc4\x89\xca\x07\x0e\x1b!\x91UIFU%C\x994!DI\xd2\xfa\xf0\xf1N8W\xde\x13A\xf5\x9cr%?\x9f3;I45A\xd1\x8bT\xb1<l\xba\xcb_\xc00xY\x17r\x17\x88\x08\x08@\xa0\ry@\x10\x04$)`\xf2\xce\x89z\xb0s\xec\x9b.iW\x9d\x81\xb5-+t\x9f\x1a\'\x97dB\xf5x\xb5\xbe.[.\xd7\x0e\x81\xe7\x08\x1cN`\x88\x10\xca\x87\xc3!"\x80\x92R\xa1/\xd1\xc0\xe6mf\xac\xbd\x99\xcca\xb3\x8780>\xa4\xc7\x8d\x1a\\"\xad\xa1\xabyBg\x15\xb9l\x88\x88\x91k"\x94\xa4\xd4\x89\xae*\xa6\x0b\x10\x0c\xd6\xd4m\xe86\xec\xb5j\x8a\x86j\';\xca.\x01I\xf2\xaaJ\xe8\x88\x8cU+t3\xfb\x0c\n\xa33\x13r2\r\x16\xe0\xb3(\xbf\x1d\x83r\xe7M\xf0D\x1365\xd8\x88\xd3\xa4\x92\xcb2\x06\x04\\\xc1\xb0\xea//\xbek&\xd8\xe6+t\xe5\xa1\x13\xada\x16\xder5"w]\xa2i\xb7[\x97R \xe2IT\xcd;Z\x04dk4\xad\x8a\t\xd3\x81z\x10\xf1:^`\xab\x1f\xc5\xdc\x91N\x14$+\x9e\xae\xd3\x80'
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if has_cmdline_bunzip2:
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def decompress(self, data):
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pop = subprocess.Popen("bunzip2", shell=True,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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pop.stdin.write(data)
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pop.stdin.close()
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ret = pop.stdout.read()
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pop.stdout.close()
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if pop.wait() != 0:
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ret = bz2.decompress(data)
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return ret
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else:
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# bunzip2 isn't available to run on Windows.
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def decompress(self, data):
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return bz2.decompress(data)
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class BZ2FileTest(BaseTest):
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"Test BZ2File type miscellaneous methods."
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def setUp(self):
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self.filename = 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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def getData(self, crlf=False):
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if crlf:
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return self.DATA_CRLF
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else:
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return self.DATA
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def createTempFile(self, crlf=False):
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with open(self.filename, "wb") as f:
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f.write(self.getData(crlf))
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def testRead(self):
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# "Test BZ2File.read()"
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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, None)
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self.assertEqual(bz2f.read(), self.TEXT)
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def testRead0(self):
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# "Test BBZ2File.read(0)"
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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, None)
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self.assertEqual(bz2f.read(0), b"")
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def testReadChunk10(self):
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# "Test BZ2File.read() in chunks of 10 bytes"
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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 1:
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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 testRead100(self):
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# "Test BZ2File.read(100)"
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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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# "Test BZ2File.peek()"
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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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# "Test BZ2File.readinto()"
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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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# "Test BZ2File.readline()"
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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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sio = BytesIO(self.TEXT)
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for line in sio.readlines():
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self.assertEqual(bz2f.readline(), line)
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def testReadLines(self):
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# "Test BZ2File.readlines()"
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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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sio = BytesIO(self.TEXT)
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self.assertEqual(bz2f.readlines(), sio.readlines())
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def testIterator(self):
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# "Test iter(BZ2File)"
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self.createTempFile()
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with BZ2File(self.filename) as bz2f:
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sio = BytesIO(self.TEXT)
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self.assertEqual(list(iter(bz2f)), sio.readlines())
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def testClosedIteratorDeadlock(self):
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# "Test that iteration on a closed bz2file releases the lock."
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# http://bugs.python.org/issue3309
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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, bz2f.__next__)
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# This call will deadlock if the above .__next__ call failed to
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# release the lock.
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self.assertRaises(ValueError, bz2f.readlines)
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def testWrite(self):
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# "Test BZ2File.write()"
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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(self.decompress(f.read()), self.TEXT)
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def testWriteChunks10(self):
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# "Test BZ2File.write() with chunks of 10 bytes"
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with BZ2File(self.filename, "w") as bz2f:
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n = 0
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while 1:
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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(self.decompress(f.read()), self.TEXT)
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def testWriteLines(self):
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# "Test BZ2File.writelines()"
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with BZ2File(self.filename, "w") as bz2f:
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self.assertRaises(TypeError, bz2f.writelines)
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sio = BytesIO(self.TEXT)
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bz2f.writelines(sio.readlines())
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# patch #1535500
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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(self.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(IOError, bz2f.write, b"a")
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self.assertRaises(IOError, bz2f.writelines, [b"a"])
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def testSeekForward(self):
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# "Test BZ2File.seek(150, 0)"
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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 testSeekBackwards(self):
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# "Test BZ2File.seek(-150, 1)"
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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 testSeekBackwardsFromEnd(self):
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# "Test BZ2File.seek(-150, 2)"
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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 testSeekPostEnd(self):
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# "Test BZ2File.seek(150000)"
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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 testSeekPostEndTwice(self):
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# "Test BZ2File.seek(150000) twice"
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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 testSeekPreStart(self):
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# "Test BZ2File.seek(-150, 0)"
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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 testFileno(self):
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# "Test BZ2File.fileno()"
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self.createTempFile()
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with open(self.filename) as rawf:
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with BZ2File(fileobj=rawf) as bz2f:
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self.assertEqual(bz2f.fileno(), rawf.fileno())
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def testOpenDel(self):
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# "Test opening and deleting a file many times"
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self.createTempFile()
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for i in range(10000):
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o = BZ2File(self.filename)
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del o
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def testOpenNonexistent(self):
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# "Test opening a nonexistent file"
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self.assertRaises(IOError, BZ2File, "/non/existent")
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def testBug1191043(self):
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# readlines() for files containing no newline
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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'
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with open(self.filename, "wb") as f:
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f.write(data)
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with BZ2File(self.filename) as bz2f:
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lines = bz2f.readlines()
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self.assertEqual(lines, [b'Test'])
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with BZ2File(self.filename) as bz2f:
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xlines = list(bz2f.readlines())
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self.assertEqual(xlines, [b'Test'])
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def testContextProtocol(self):
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# BZ2File supports the context management protocol
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f = None
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with BZ2File(self.filename, "wb") as f:
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f.write(b"xxx")
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f = BZ2File(self.filename, "rb")
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f.close()
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try:
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with f:
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pass
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except ValueError:
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pass
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else:
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self.fail("__enter__ on a closed file didn't raise an exception")
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try:
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with BZ2File(self.filename, "wb") as f:
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1/0
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except ZeroDivisionError:
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pass
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else:
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self.fail("1/0 didn't raise an exception")
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@unittest.skipUnless(threading, 'Threading required for this test.')
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def testThreading(self):
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# Using a BZ2File from several threads doesn't deadlock (issue #7205).
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data = b"1" * 2**20
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nthreads = 10
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with bz2.BZ2File(self.filename, 'wb') as f:
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def comp():
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for i in range(5):
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f.write(data)
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threads = [threading.Thread(target=comp) for i in range(nthreads)]
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for t in threads:
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t.start()
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for t in threads:
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t.join()
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def testMixedIterationReads(self):
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# "Test mixed iteration and reads."
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self.createTempFile()
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linelen = len(self.TEXT_LINES[0])
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halflen = linelen // 2
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with bz2.BZ2File(self.filename) as bz2f:
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bz2f.read(halflen)
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self.assertEqual(next(bz2f), self.TEXT_LINES[0][halflen:])
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self.assertEqual(bz2f.read(), self.TEXT[linelen:])
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with bz2.BZ2File(self.filename) as bz2f:
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bz2f.readline()
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self.assertEqual(next(bz2f), self.TEXT_LINES[1])
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self.assertEqual(bz2f.readline(), self.TEXT_LINES[2])
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with bz2.BZ2File(self.filename) as bz2f:
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bz2f.readlines()
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with self.assertRaises(StopIteration):
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next(bz2f)
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self.assertEqual(bz2f.readlines(), [])
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def testReadBytesIO(self):
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# "Test BZ2File.read() with BytesIO source"
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with BytesIO(self.getData()) as bio:
|
|
with BZ2File(fileobj=bio) as bz2f:
|
|
self.assertRaises(TypeError, bz2f.read, None)
|
|
self.assertEqual(bz2f.read(), self.TEXT)
|
|
self.assertFalse(bio.closed)
|
|
|
|
def testPeekBytesIO(self):
|
|
# "Test BZ2File.peek() with BytesIO source"
|
|
with BytesIO(self.getData()) as bio:
|
|
with BZ2File(fileobj=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):
|
|
# "Test BZ2File.write() with BytesIO destination"
|
|
with BytesIO() as bio:
|
|
with BZ2File(fileobj=bio, mode="w") as bz2f:
|
|
self.assertRaises(TypeError, bz2f.write)
|
|
bz2f.write(self.TEXT)
|
|
self.assertEqual(self.decompress(bio.getvalue()), self.TEXT)
|
|
self.assertFalse(bio.closed)
|
|
|
|
def testSeekForwardBytesIO(self):
|
|
# "Test BZ2File.seek(150, 0) with BytesIO source"
|
|
with BytesIO(self.getData()) as bio:
|
|
with BZ2File(fileobj=bio) as bz2f:
|
|
self.assertRaises(TypeError, bz2f.seek)
|
|
bz2f.seek(150)
|
|
self.assertEqual(bz2f.read(), self.TEXT[150:])
|
|
|
|
def testSeekBackwardsBytesIO(self):
|
|
# "Test BZ2File.seek(-150, 1) with BytesIO source"
|
|
with BytesIO(self.getData()) as bio:
|
|
with BZ2File(fileobj=bio) as bz2f:
|
|
bz2f.read(500)
|
|
bz2f.seek(-150, 1)
|
|
self.assertEqual(bz2f.read(), self.TEXT[500-150:])
|
|
|
|
class BZ2CompressorTest(BaseTest):
|
|
def testCompress(self):
|
|
# "Test BZ2Compressor.compress()/flush()"
|
|
bz2c = BZ2Compressor()
|
|
self.assertRaises(TypeError, bz2c.compress)
|
|
data = bz2c.compress(self.TEXT)
|
|
data += bz2c.flush()
|
|
self.assertEqual(self.decompress(data), self.TEXT)
|
|
|
|
def testCompressChunks10(self):
|
|
# "Test BZ2Compressor.compress()/flush() with chunks of 10 bytes"
|
|
bz2c = BZ2Compressor()
|
|
n = 0
|
|
data = b''
|
|
while 1:
|
|
str = self.TEXT[n*10:(n+1)*10]
|
|
if not str:
|
|
break
|
|
data += bz2c.compress(str)
|
|
n += 1
|
|
data += bz2c.flush()
|
|
self.assertEqual(self.decompress(data), self.TEXT)
|
|
|
|
@precisionbigmemtest(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
|
|
|
|
class BZ2DecompressorTest(BaseTest):
|
|
def test_Constructor(self):
|
|
self.assertRaises(TypeError, BZ2Decompressor, 42)
|
|
|
|
def testDecompress(self):
|
|
# "Test BZ2Decompressor.decompress()"
|
|
bz2d = BZ2Decompressor()
|
|
self.assertRaises(TypeError, bz2d.decompress)
|
|
text = bz2d.decompress(self.DATA)
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressChunks10(self):
|
|
# "Test BZ2Decompressor.decompress() with chunks of 10 bytes"
|
|
bz2d = BZ2Decompressor()
|
|
text = b''
|
|
n = 0
|
|
while 1:
|
|
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):
|
|
# "Test BZ2Decompressor.decompress() with unused data"
|
|
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):
|
|
# "Calling BZ2Decompressor.decompress() after EOS must raise EOFError"
|
|
bz2d = BZ2Decompressor()
|
|
text = bz2d.decompress(self.DATA)
|
|
self.assertRaises(EOFError, bz2d.decompress, b"anything")
|
|
|
|
@precisionbigmemtest(size=_4G + 100, memuse=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
|
|
|
|
|
|
class FuncTest(BaseTest):
|
|
"Test module functions"
|
|
|
|
def testCompress(self):
|
|
# "Test compress() function"
|
|
data = bz2.compress(self.TEXT)
|
|
self.assertEqual(self.decompress(data), self.TEXT)
|
|
|
|
def testDecompress(self):
|
|
# "Test decompress() function"
|
|
text = bz2.decompress(self.DATA)
|
|
self.assertEqual(text, self.TEXT)
|
|
|
|
def testDecompressEmpty(self):
|
|
# "Test decompress() function with empty string"
|
|
text = bz2.decompress(b"")
|
|
self.assertEqual(text, b"")
|
|
|
|
def testDecompressIncomplete(self):
|
|
# "Test decompress() function with incomplete data"
|
|
self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10])
|
|
|
|
def test_main():
|
|
support.run_unittest(
|
|
BZ2FileTest,
|
|
BZ2CompressorTest,
|
|
BZ2DecompressorTest,
|
|
FuncTest
|
|
)
|
|
support.reap_children()
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|
|
|
|
# vim:ts=4:sw=4
|