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		1a3ff48c55
		
	
	
	
	
		
			
			- bigmemtest is replaced by precisionbigmemtest - add a poor man's watchdog thread to print memory consumption
		
			
				
	
	
		
			600 lines
		
	
	
	
		
			22 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			600 lines
		
	
	
	
		
			22 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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| 
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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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| 
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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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| 
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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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| 
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| has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx")
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| 
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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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| 
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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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| 
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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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| 
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| class BZ2FileTest(BaseTest):
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|     "Test BZ2File type miscellaneous methods."
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| 
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|     def setUp(self):
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|         self.filename = TESTFN
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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|             with BZ2File(fileobj=rawf) as bz2f:
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|                 self.assertEqual(bz2f.fileno(), rawf.fileno())
 | |
| 
 | |
|     def testOpenDel(self):
 | |
|         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
 | |
| 
 | |
|     def testOpenNonexistent(self):
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|         self.assertRaises(IOError, BZ2File, "/non/existent")
 | |
| 
 | |
|     def testReadlinesNoNewline(self):
 | |
|         # Issue #1191043: readlines() fails on a file 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()
 | |
|         self.assertEqual(lines, [b'Test'])
 | |
|         with BZ2File(self.filename) as bz2f:
 | |
|             xlines = list(bz2f.readlines())
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|         self.assertEqual(xlines, [b'Test'])
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| 
 | |
|     def testContextProtocol(self):
 | |
|         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")
 | |
|         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 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(fileobj=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(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):
 | |
|         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):
 | |
|         with BytesIO(self.DATA) 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):
 | |
|         with BytesIO(self.DATA) 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):
 | |
|         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()
 |