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aebcdba829
The fileobj argument was added during the 3.3 development cycle, so this change does not break backward compatibility with 3.2.
685 lines
24 KiB
Python
685 lines
24 KiB
Python
#!/usr/bin/env python3
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from test import support
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from test.support import TESTFN, bigmemtest, _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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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 createTempFile(self, streams=1):
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with open(self.filename, "wb") as f:
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f.write(self.DATA * streams)
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def testBadArgs(self):
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with self.assertRaises(TypeError):
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BZ2File(123.456)
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with self.assertRaises(ValueError):
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BZ2File("/dev/null", "z")
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with self.assertRaises(ValueError):
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BZ2File("/dev/null", "rx")
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with self.assertRaises(ValueError):
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BZ2File("/dev/null", "rbt")
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with self.assertRaises(ValueError):
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BZ2File("/dev/null", compresslevel=0)
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with self.assertRaises(ValueError):
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BZ2File("/dev/null", 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, None)
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self.assertEqual(bz2f.read(), self.TEXT)
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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, None)
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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 = bz2._BUFFER_SIZE
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bz2._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, None)
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self.assertEqual(bz2f.read(), self.TEXT * 5)
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finally:
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bz2._BUFFER_SIZE = buffer_size
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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, None)
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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, 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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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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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(self.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(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 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(self.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()
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with open(self.filename, 'rb') as rawf:
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bz2f = BZ2File(rawf)
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try:
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self.assertEqual(bz2f.fileno(), rawf.fileno())
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finally:
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bz2f.close()
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self.assertRaises(ValueError, bz2f.fileno)
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def testSeekable(self):
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bz2f = BZ2File(BytesIO(self.DATA))
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try:
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self.assertTrue(bz2f.seekable())
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bz2f.read()
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self.assertTrue(bz2f.seekable())
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finally:
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bz2f.close()
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self.assertRaises(ValueError, bz2f.seekable)
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bz2f = BZ2File(BytesIO(), mode="w")
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try:
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self.assertFalse(bz2f.seekable())
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finally:
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bz2f.close()
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self.assertRaises(ValueError, bz2f.seekable)
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src = BytesIO(self.DATA)
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src.seekable = lambda: False
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bz2f = BZ2File(src)
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try:
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self.assertFalse(bz2f.seekable())
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finally:
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bz2f.close()
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self.assertRaises(ValueError, bz2f.seekable)
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def testReadable(self):
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bz2f = BZ2File(BytesIO(self.DATA))
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try:
|
|
self.assertTrue(bz2f.readable())
|
|
bz2f.read()
|
|
self.assertTrue(bz2f.readable())
|
|
finally:
|
|
bz2f.close()
|
|
self.assertRaises(ValueError, bz2f.readable)
|
|
|
|
bz2f = BZ2File(BytesIO(), mode="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(), mode="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(IOError, 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 bz2.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)]
|
|
for t in threads:
|
|
t.start()
|
|
for t in threads:
|
|
t.join()
|
|
|
|
def testWithoutThreading(self):
|
|
bz2 = support.import_fresh_module("bz2", blocked=("threading",))
|
|
with bz2.BZ2File(self.filename, "wb") as f:
|
|
f.write(b"abc")
|
|
with bz2.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 bz2.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 bz2.BZ2File(self.filename) as bz2f:
|
|
bz2f.readline()
|
|
self.assertEqual(next(bz2f), self.TEXT_LINES[1])
|
|
self.assertEqual(bz2f.readline(), self.TEXT_LINES[2])
|
|
with bz2.BZ2File(self.filename) as bz2f:
|
|
bz2f.readlines()
|
|
with 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)
|
|
|
|
# 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, None)
|
|
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(self.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:])
|
|
|
|
class BZ2CompressorTest(BaseTest):
|
|
def testCompress(self):
|
|
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):
|
|
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(self.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
|
|
|
|
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")
|
|
|
|
@bigmemtest(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):
|
|
data = bz2.compress(self.TEXT)
|
|
self.assertEqual(self.decompress(data), self.TEXT)
|
|
|
|
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 testDecompressIncomplete(self):
|
|
self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10])
|
|
|
|
def testDecompressMultiStream(self):
|
|
text = bz2.decompress(self.DATA * 5)
|
|
self.assertEqual(text, self.TEXT * 5)
|
|
|
|
def test_main():
|
|
support.run_unittest(
|
|
BZ2FileTest,
|
|
BZ2CompressorTest,
|
|
BZ2DecompressorTest,
|
|
FuncTest
|
|
)
|
|
support.reap_children()
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|