1 #!/usr/bin/python

     2 from test import test_support

     3 from test.test_support import TESTFN

     4 

     5 import unittest

     6 from cStringIO import StringIO

     7 import os

     8 import popen2

     9 import sys

    10 

    11 import bz2

    12 from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor

    13 

    14 has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx", "riscos")

    15 

    16 class BaseTest(unittest.TestCase):

    17     "Base for other testcases."

    18     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'

    19     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`'

    20     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'

    21 

    22     if has_cmdline_bunzip2:

    23         def decompress(self, data):

    24             pop = popen2.Popen3("bunzip2", capturestderr=1)

    25             pop.tochild.write(data)

    26             pop.tochild.close()

    27             ret = pop.fromchild.read()

    28             pop.fromchild.close()

    29             if pop.wait() != 0:

    30                 ret = bz2.decompress(data)

    31             return ret

    32 

    33     else:

    34         # popen2.Popen3 doesn't exist on Windows, and even if it did, bunzip2

    35         # isn't available to run.

    36         def decompress(self, data):

    37             return bz2.decompress(data)

    38 

    39 class BZ2FileTest(BaseTest):

    40     "Test BZ2File type miscellaneous methods."

    41 

    42     def setUp(self):

    43         self.filename = TESTFN

    44 

    45     def tearDown(self):

    46         if os.path.isfile(self.filename):

    47             os.unlink(self.filename)

    48 

    49     def createTempFile(self, crlf=0):

    50         f = open(self.filename, "wb")

    51         if crlf:

    52             data = self.DATA_CRLF

    53         else:

    54             data = self.DATA

    55         f.write(data)

    56         f.close()

    57 

    58     def testRead(self):

    59         # "Test BZ2File.read()"

    60         self.createTempFile()

    61         bz2f = BZ2File(self.filename)

    62         self.assertRaises(TypeError, bz2f.read, None)

    63         self.assertEqual(bz2f.read(), self.TEXT)

    64         bz2f.close()

    65 

    66     def testReadChunk10(self):

    67         # "Test BZ2File.read() in chunks of 10 bytes"

    68         self.createTempFile()

    69         bz2f = BZ2File(self.filename)

    70         text = ''

    71         while 1:

    72             str = bz2f.read(10)

    73             if not str:

    74                 break

    75             text += str

    76         self.assertEqual(text, text)

    77         bz2f.close()

    78 

    79     def testRead100(self):

    80         # "Test BZ2File.read(100)"

    81         self.createTempFile()

    82         bz2f = BZ2File(self.filename)

    83         self.assertEqual(bz2f.read(100), self.TEXT[:100])

    84         bz2f.close()

    85 

    86     def testReadLine(self):

    87         # "Test BZ2File.readline()"

    88         self.createTempFile()

    89         bz2f = BZ2File(self.filename)

    90         self.assertRaises(TypeError, bz2f.readline, None)

    91         sio = StringIO(self.TEXT)

    92         for line in sio.readlines():

    93             self.assertEqual(bz2f.readline(), line)

    94         bz2f.close()

    95 

    96     def testReadLines(self):

    97         # "Test BZ2File.readlines()"

    98         self.createTempFile()

    99         bz2f = BZ2File(self.filename)

   100         self.assertRaises(TypeError, bz2f.readlines, None)

   101         sio = StringIO(self.TEXT)

   102         self.assertEqual(bz2f.readlines(), sio.readlines())

   103         bz2f.close()

   104 

   105     def testIterator(self):

   106         # "Test iter(BZ2File)"

   107         self.createTempFile()

   108         bz2f = BZ2File(self.filename)

   109         sio = StringIO(self.TEXT)

   110         self.assertEqual(list(iter(bz2f)), sio.readlines())

   111         bz2f.close()

   112 

   113     def testXReadLines(self):

   114         # "Test BZ2File.xreadlines()"

   115         self.createTempFile()

   116         bz2f = BZ2File(self.filename)

   117         sio = StringIO(self.TEXT)

   118         self.assertEqual(list(bz2f.xreadlines()), sio.readlines())

   119         bz2f.close()

   120 

   121     def testUniversalNewlinesLF(self):

   122         # "Test BZ2File.read() with universal newlines (\\n)"

   123         self.createTempFile()

   124         bz2f = BZ2File(self.filename, "rU")

   125         self.assertEqual(bz2f.read(), self.TEXT)

   126         self.assertEqual(bz2f.newlines, "\n")

   127         bz2f.close()

   128 

   129     def testUniversalNewlinesCRLF(self):

   130         # "Test BZ2File.read() with universal newlines (\\r\\n)"

   131         self.createTempFile(crlf=1)

   132         bz2f = BZ2File(self.filename, "rU")

   133         self.assertEqual(bz2f.read(), self.TEXT)

   134         self.assertEqual(bz2f.newlines, "\r\n")

   135         bz2f.close()

   136 

   137     def testWrite(self):

   138         # "Test BZ2File.write()"

   139         bz2f = BZ2File(self.filename, "w")

   140         self.assertRaises(TypeError, bz2f.write)

   141         bz2f.write(self.TEXT)

   142         bz2f.close()

   143         f = open(self.filename, 'rb')

   144         self.assertEqual(self.decompress(f.read()), self.TEXT)

   145         f.close()

   146 

   147     def testWriteChunks10(self):

   148         # "Test BZ2File.write() with chunks of 10 bytes"

   149         bz2f = BZ2File(self.filename, "w")

   150         n = 0

   151         while 1:

   152             str = self.TEXT[n*10:(n+1)*10]

   153             if not str:

   154                 break

   155             bz2f.write(str)

   156             n += 1

   157         bz2f.close()

   158         f = open(self.filename, 'rb')

   159         self.assertEqual(self.decompress(f.read()), self.TEXT)

   160         f.close()

   161 

   162     def testWriteLines(self):

   163         # "Test BZ2File.writelines()"

   164         bz2f = BZ2File(self.filename, "w")

   165         self.assertRaises(TypeError, bz2f.writelines)

   166         sio = StringIO(self.TEXT)

   167         bz2f.writelines(sio.readlines())

   168         bz2f.close()

   169         # patch #1535500

   170         self.assertRaises(ValueError, bz2f.writelines, ["a"])

   171         f = open(self.filename, 'rb')

   172         self.assertEqual(self.decompress(f.read()), self.TEXT)

   173         f.close()

   174 

   175     def testWriteMethodsOnReadOnlyFile(self):

   176         bz2f = BZ2File(self.filename, "w")

   177         bz2f.write("abc")

   178         bz2f.close()

   179 

   180         bz2f = BZ2File(self.filename, "r")

   181         self.assertRaises(IOError, bz2f.write, "a")

   182         self.assertRaises(IOError, bz2f.writelines, ["a"])

   183 

   184     def testSeekForward(self):

   185         # "Test BZ2File.seek(150, 0)"

   186         self.createTempFile()

   187         bz2f = BZ2File(self.filename)

   188         self.assertRaises(TypeError, bz2f.seek)

   189         bz2f.seek(150)

   190         self.assertEqual(bz2f.read(), self.TEXT[150:])

   191         bz2f.close()

   192 

   193     def testSeekBackwards(self):

   194         # "Test BZ2File.seek(-150, 1)"

   195         self.createTempFile()

   196         bz2f = BZ2File(self.filename)

   197         bz2f.read(500)

   198         bz2f.seek(-150, 1)

   199         self.assertEqual(bz2f.read(), self.TEXT[500-150:])

   200         bz2f.close()

   201 

   202     def testSeekBackwardsFromEnd(self):

   203         # "Test BZ2File.seek(-150, 2)"

   204         self.createTempFile()

   205         bz2f = BZ2File(self.filename)

   206         bz2f.seek(-150, 2)

   207         self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:])

   208         bz2f.close()

   209 

   210     def testSeekPostEnd(self):

   211         # "Test BZ2File.seek(150000)"

   212         self.createTempFile()

   213         bz2f = BZ2File(self.filename)

   214         bz2f.seek(150000)

   215         self.assertEqual(bz2f.tell(), len(self.TEXT))

   216         self.assertEqual(bz2f.read(), "")

   217         bz2f.close()

   218 

   219     def testSeekPostEndTwice(self):

   220         # "Test BZ2File.seek(150000) twice"

   221         self.createTempFile()

   222         bz2f = BZ2File(self.filename)

   223         bz2f.seek(150000)

   224         bz2f.seek(150000)

   225         self.assertEqual(bz2f.tell(), len(self.TEXT))

   226         self.assertEqual(bz2f.read(), "")

   227         bz2f.close()

   228 

   229     def testSeekPreStart(self):

   230         # "Test BZ2File.seek(-150, 0)"

   231         self.createTempFile()

   232         bz2f = BZ2File(self.filename)

   233         bz2f.seek(-150)

   234         self.assertEqual(bz2f.tell(), 0)

   235         self.assertEqual(bz2f.read(), self.TEXT)

   236         bz2f.close()

   237 

   238     def testOpenDel(self):

   239         # "Test opening and deleting a file many times"

   240         self.createTempFile()

   241         for i in xrange(10000):

   242             o = BZ2File(self.filename)

   243             del o

   244 

   245     def testOpenNonexistent(self):

   246         # "Test opening a nonexistent file"

   247         self.assertRaises(IOError, BZ2File, "/non/existent")

   248 

   249     def testModeU(self):

   250         # Bug #1194181: bz2.BZ2File opened for write with mode "U"

   251         self.createTempFile()

   252         bz2f = BZ2File(self.filename, "U")

   253         bz2f.close()

   254         f = file(self.filename)

   255         f.seek(0, 2)

   256         self.assertEqual(f.tell(), len(self.DATA))

   257         f.close()

   258 

   259     def testBug1191043(self):

   260         # readlines() for files containing no newline

   261         data = 'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t'

   262         f = open(self.filename, "wb")

   263         f.write(data)

   264         f.close()

   265         bz2f = BZ2File(self.filename)

   266         lines = bz2f.readlines()

   267         bz2f.close()

   268         self.assertEqual(lines, ['Test'])

   269         bz2f = BZ2File(self.filename)

   270         xlines = list(bz2f.xreadlines())

   271         bz2f.close()

   272         self.assertEqual(xlines, ['Test'])

   273 

   274 

   275 class BZ2CompressorTest(BaseTest):

   276     def testCompress(self):

   277         # "Test BZ2Compressor.compress()/flush()"

   278         bz2c = BZ2Compressor()

   279         self.assertRaises(TypeError, bz2c.compress)

   280         data = bz2c.compress(self.TEXT)

   281         data += bz2c.flush()

   282         self.assertEqual(self.decompress(data), self.TEXT)

   283 

   284     def testCompressChunks10(self):

   285         # "Test BZ2Compressor.compress()/flush() with chunks of 10 bytes"

   286         bz2c = BZ2Compressor()

   287         n = 0

   288         data = ''

   289         while 1:

   290             str = self.TEXT[n*10:(n+1)*10]

   291             if not str:

   292                 break

   293             data += bz2c.compress(str)

   294             n += 1

   295         data += bz2c.flush()

   296         self.assertEqual(self.decompress(data), self.TEXT)

   297 

   298 class BZ2DecompressorTest(BaseTest):

   299     def test_Constructor(self):

   300         self.assertRaises(TypeError, BZ2Decompressor, 42)

   301 

   302     def testDecompress(self):

   303         # "Test BZ2Decompressor.decompress()"

   304         bz2d = BZ2Decompressor()

   305         self.assertRaises(TypeError, bz2d.decompress)

   306         text = bz2d.decompress(self.DATA)

   307         self.assertEqual(text, self.TEXT)

   308 

   309     def testDecompressChunks10(self):

   310         # "Test BZ2Decompressor.decompress() with chunks of 10 bytes"

   311         bz2d = BZ2Decompressor()

   312         text = ''

   313         n = 0

   314         while 1:

   315             str = self.DATA[n*10:(n+1)*10]

   316             if not str:

   317                 break

   318             text += bz2d.decompress(str)

   319             n += 1

   320         self.assertEqual(text, self.TEXT)

   321 

   322     def testDecompressUnusedData(self):

   323         # "Test BZ2Decompressor.decompress() with unused data"

   324         bz2d = BZ2Decompressor()

   325         unused_data = "this is unused data"

   326         text = bz2d.decompress(self.DATA+unused_data)

   327         self.assertEqual(text, self.TEXT)

   328         self.assertEqual(bz2d.unused_data, unused_data)

   329 

   330     def testEOFError(self):

   331         # "Calling BZ2Decompressor.decompress() after EOS must raise EOFError"

   332         bz2d = BZ2Decompressor()

   333         text = bz2d.decompress(self.DATA)

   334         self.assertRaises(EOFError, bz2d.decompress, "anything")

   335 

   336 

   337 class FuncTest(BaseTest):

   338     "Test module functions"

   339 

   340     def testCompress(self):

   341         # "Test compress() function"

   342         data = bz2.compress(self.TEXT)

   343         self.assertEqual(self.decompress(data), self.TEXT)

   344 

   345     def testDecompress(self):

   346         # "Test decompress() function"

   347         text = bz2.decompress(self.DATA)

   348         self.assertEqual(text, self.TEXT)

   349 

   350     def testDecompressEmpty(self):

   351         # "Test decompress() function with empty string"

   352         text = bz2.decompress("")

   353         self.assertEqual(text, "")

   354 

   355     def testDecompressIncomplete(self):

   356         # "Test decompress() function with incomplete data"

   357         self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10])

   358 

   359 def test_main():

   360     test_support.run_unittest(

   361         BZ2FileTest,

   362         BZ2CompressorTest,

   363         BZ2DecompressorTest,

   364         FuncTest

   365     )

   366     test_support.reap_children()

   367 

   368 if __name__ == '__main__':

   369     test_main()

   370 

   371 # vim:ts=4:sw=4