cpython/Lib/test/test_bz2.py
Neal Norwitz b15ac3169d Add new utility function, reap_children(), to test_support. This should
be called at the end of each test that spawns children (perhaps it
should be called from regrtest instead?).  This will hopefully prevent
some of the unexplained failures in the buildbots (hppa and alpha)
during tests that spawn children.  The problems were not reproducible.
There were many zombies that remained at the end of several tests.
In the worst case, this shouldn't cause any more problems,
though it may not help either.  Time will tell.
2006-06-29 04:10:08 +00:00

360 lines
14 KiB
Python

#!/usr/bin/python
from test import test_support
from test.test_support import TESTFN
import unittest
from cStringIO import StringIO
import os
import popen2
import sys
import bz2
from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor
has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx", "riscos")
class BaseTest(unittest.TestCase):
"Base for other testcases."
TEXT = 'root:x:0:0:root:/root:/bin/bash\nbin:x:1:1:bin:/bin:\ndaemon:x:2:2:daemon:/sbin:\nadm:x:3:4:adm:/var/adm:\nlp:x:4:7:lp:/var/spool/lpd:\nsync:x:5:0:sync:/sbin:/bin/sync\nshutdown:x:6:0:shutdown:/sbin:/sbin/shutdown\nhalt:x:7:0:halt:/sbin:/sbin/halt\nmail:x:8:12:mail:/var/spool/mail:\nnews:x:9:13:news:/var/spool/news:\nuucp:x:10:14:uucp:/var/spool/uucp:\noperator:x:11:0:operator:/root:\ngames:x:12:100:games:/usr/games:\ngopher:x:13:30:gopher:/usr/lib/gopher-data:\nftp:x:14:50:FTP User:/var/ftp:/bin/bash\nnobody:x:65534:65534:Nobody:/home:\npostfix:x:100:101:postfix:/var/spool/postfix:\nniemeyer:x:500:500::/home/niemeyer:/bin/bash\npostgres:x:101:102:PostgreSQL Server:/var/lib/pgsql:/bin/bash\nmysql:x:102:103:MySQL server:/var/lib/mysql:/bin/bash\nwww:x:103:104::/var/www:/bin/false\n'
DATA = '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`'
DATA_CRLF = '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'
if has_cmdline_bunzip2:
def decompress(self, data):
pop = popen2.Popen3("bunzip2", capturestderr=1)
pop.tochild.write(data)
pop.tochild.close()
ret = pop.fromchild.read()
pop.fromchild.close()
if pop.wait() != 0:
ret = bz2.decompress(data)
return ret
else:
# popen2.Popen3 doesn't exist on Windows, and even if it did, bunzip2
# isn't available to run.
def decompress(self, data):
return bz2.decompress(data)
class BZ2FileTest(BaseTest):
"Test BZ2File type miscellaneous methods."
def setUp(self):
self.filename = TESTFN
def tearDown(self):
if os.path.isfile(self.filename):
os.unlink(self.filename)
def createTempFile(self, crlf=0):
f = open(self.filename, "wb")
if crlf:
data = self.DATA_CRLF
else:
data = self.DATA
f.write(data)
f.close()
def testRead(self):
# "Test BZ2File.read()"
self.createTempFile()
bz2f = BZ2File(self.filename)
self.assertRaises(TypeError, bz2f.read, None)
self.assertEqual(bz2f.read(), self.TEXT)
bz2f.close()
def testReadChunk10(self):
# "Test BZ2File.read() in chunks of 10 bytes"
self.createTempFile()
bz2f = BZ2File(self.filename)
text = ''
while 1:
str = bz2f.read(10)
if not str:
break
text += str
self.assertEqual(text, text)
bz2f.close()
def testRead100(self):
# "Test BZ2File.read(100)"
self.createTempFile()
bz2f = BZ2File(self.filename)
self.assertEqual(bz2f.read(100), self.TEXT[:100])
bz2f.close()
def testReadLine(self):
# "Test BZ2File.readline()"
self.createTempFile()
bz2f = BZ2File(self.filename)
self.assertRaises(TypeError, bz2f.readline, None)
sio = StringIO(self.TEXT)
for line in sio.readlines():
self.assertEqual(bz2f.readline(), line)
bz2f.close()
def testReadLines(self):
# "Test BZ2File.readlines()"
self.createTempFile()
bz2f = BZ2File(self.filename)
self.assertRaises(TypeError, bz2f.readlines, None)
sio = StringIO(self.TEXT)
self.assertEqual(bz2f.readlines(), sio.readlines())
bz2f.close()
def testIterator(self):
# "Test iter(BZ2File)"
self.createTempFile()
bz2f = BZ2File(self.filename)
sio = StringIO(self.TEXT)
self.assertEqual(list(iter(bz2f)), sio.readlines())
bz2f.close()
def testXReadLines(self):
# "Test BZ2File.xreadlines()"
self.createTempFile()
bz2f = BZ2File(self.filename)
sio = StringIO(self.TEXT)
self.assertEqual(list(bz2f.xreadlines()), sio.readlines())
bz2f.close()
def testUniversalNewlinesLF(self):
# "Test BZ2File.read() with universal newlines (\\n)"
self.createTempFile()
bz2f = BZ2File(self.filename, "rU")
self.assertEqual(bz2f.read(), self.TEXT)
self.assertEqual(bz2f.newlines, "\n")
bz2f.close()
def testUniversalNewlinesCRLF(self):
# "Test BZ2File.read() with universal newlines (\\r\\n)"
self.createTempFile(crlf=1)
bz2f = BZ2File(self.filename, "rU")
self.assertEqual(bz2f.read(), self.TEXT)
self.assertEqual(bz2f.newlines, "\r\n")
bz2f.close()
def testWrite(self):
# "Test BZ2File.write()"
bz2f = BZ2File(self.filename, "w")
self.assertRaises(TypeError, bz2f.write)
bz2f.write(self.TEXT)
bz2f.close()
f = open(self.filename, 'rb')
self.assertEqual(self.decompress(f.read()), self.TEXT)
f.close()
def testWriteChunks10(self):
# "Test BZ2File.write() with chunks of 10 bytes"
bz2f = BZ2File(self.filename, "w")
n = 0
while 1:
str = self.TEXT[n*10:(n+1)*10]
if not str:
break
bz2f.write(str)
n += 1
bz2f.close()
f = open(self.filename, 'rb')
self.assertEqual(self.decompress(f.read()), self.TEXT)
f.close()
def testWriteLines(self):
# "Test BZ2File.writelines()"
bz2f = BZ2File(self.filename, "w")
self.assertRaises(TypeError, bz2f.writelines)
sio = StringIO(self.TEXT)
bz2f.writelines(sio.readlines())
bz2f.close()
f = open(self.filename, 'rb')
self.assertEqual(self.decompress(f.read()), self.TEXT)
f.close()
def testSeekForward(self):
# "Test BZ2File.seek(150, 0)"
self.createTempFile()
bz2f = BZ2File(self.filename)
self.assertRaises(TypeError, bz2f.seek)
bz2f.seek(150)
self.assertEqual(bz2f.read(), self.TEXT[150:])
bz2f.close()
def testSeekBackwards(self):
# "Test BZ2File.seek(-150, 1)"
self.createTempFile()
bz2f = BZ2File(self.filename)
bz2f.read(500)
bz2f.seek(-150, 1)
self.assertEqual(bz2f.read(), self.TEXT[500-150:])
bz2f.close()
def testSeekBackwardsFromEnd(self):
# "Test BZ2File.seek(-150, 2)"
self.createTempFile()
bz2f = BZ2File(self.filename)
bz2f.seek(-150, 2)
self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:])
bz2f.close()
def testSeekPostEnd(self):
# "Test BZ2File.seek(150000)"
self.createTempFile()
bz2f = BZ2File(self.filename)
bz2f.seek(150000)
self.assertEqual(bz2f.tell(), len(self.TEXT))
self.assertEqual(bz2f.read(), "")
bz2f.close()
def testSeekPostEndTwice(self):
# "Test BZ2File.seek(150000) twice"
self.createTempFile()
bz2f = BZ2File(self.filename)
bz2f.seek(150000)
bz2f.seek(150000)
self.assertEqual(bz2f.tell(), len(self.TEXT))
self.assertEqual(bz2f.read(), "")
bz2f.close()
def testSeekPreStart(self):
# "Test BZ2File.seek(-150, 0)"
self.createTempFile()
bz2f = BZ2File(self.filename)
bz2f.seek(-150)
self.assertEqual(bz2f.tell(), 0)
self.assertEqual(bz2f.read(), self.TEXT)
bz2f.close()
def testOpenDel(self):
# "Test opening and deleting a file many times"
self.createTempFile()
for i in xrange(10000):
o = BZ2File(self.filename)
del o
def testOpenNonexistent(self):
# "Test opening a nonexistent file"
self.assertRaises(IOError, BZ2File, "/non/existent")
def testModeU(self):
# Bug #1194181: bz2.BZ2File opened for write with mode "U"
self.createTempFile()
bz2f = BZ2File(self.filename, "U")
bz2f.close()
f = file(self.filename)
f.seek(0, 2)
self.assertEqual(f.tell(), len(self.DATA))
f.close()
def testBug1191043(self):
# readlines() for files containing no newline
data = 'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t'
f = open(self.filename, "wb")
f.write(data)
f.close()
bz2f = BZ2File(self.filename)
lines = bz2f.readlines()
bz2f.close()
self.assertEqual(lines, ['Test'])
bz2f = BZ2File(self.filename)
xlines = list(bz2f.xreadlines())
bz2f.close()
self.assertEqual(lines, ['Test'])
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 = ''
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)
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 = ''
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 = "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, "anything")
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("")
self.assertEqual(text, "")
def testDecompressIncomplete(self):
# "Test decompress() function with incomplete data"
self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10])
def test_main():
test_support.run_unittest(
BZ2FileTest,
BZ2CompressorTest,
BZ2DecompressorTest,
FuncTest
)
test_support.reap_children()
if __name__ == '__main__':
test_main()
# vim:ts=4:sw=4