1 #!/usr/bin/env python 2 from test import test_support 3 from test.test_support import TESTFN, import_module 4 5 import unittest 6 from cStringIO import StringIO 7 import os 8 import subprocess 9 import sys 10 11 try: 12 import threading 13 except ImportError: 14 threading = None 15 16 bz2 = import_module('bz2') 17 from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor 18 19 has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx", "riscos") 20 21 class BaseTest(unittest.TestCase): 22 "Base for other testcases." 23 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' 24 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`' 25 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' 26 27 if has_cmdline_bunzip2: 28 def decompress(self, data): 29 pop = subprocess.Popen("bunzip2", shell=True, 30 stdin=subprocess.PIPE, 31 stdout=subprocess.PIPE, 32 stderr=subprocess.STDOUT) 33 pop.stdin.write(data) 34 pop.stdin.close() 35 ret = pop.stdout.read() 36 pop.stdout.close() 37 if pop.wait() != 0: 38 ret = bz2.decompress(data) 39 return ret 40 41 else: 42 # bunzip2 isn't available to run on Windows. 43 def decompress(self, data): 44 return bz2.decompress(data) 45 46 class BZ2FileTest(BaseTest): 47 "Test BZ2File type miscellaneous methods." 48 49 def setUp(self): 50 self.filename = TESTFN 51 52 def tearDown(self): 53 if os.path.isfile(self.filename): 54 os.unlink(self.filename) 55 56 def createTempFile(self, crlf=0): 57 with open(self.filename, "wb") as f: 58 if crlf: 59 data = self.DATA_CRLF 60 else: 61 data = self.DATA 62 f.write(data) 63 64 def testRead(self): 65 # "Test BZ2File.read()" 66 self.createTempFile() 67 with BZ2File(self.filename) as bz2f: 68 self.assertRaises(TypeError, bz2f.read, None) 69 self.assertEqual(bz2f.read(), self.TEXT) 70 71 def testRead0(self): 72 # Test BBZ2File.read(0)" 73 self.createTempFile() 74 with BZ2File(self.filename) as bz2f: 75 self.assertRaises(TypeError, bz2f.read, None) 76 self.assertEqual(bz2f.read(0), "") 77 78 def testReadChunk10(self): 79 # "Test BZ2File.read() in chunks of 10 bytes" 80 self.createTempFile() 81 with BZ2File(self.filename) as bz2f: 82 text = '' 83 while 1: 84 str = bz2f.read(10) 85 if not str: 86 break 87 text += str 88 self.assertEqual(text, self.TEXT) 89 90 def testRead100(self): 91 # "Test BZ2File.read(100)" 92 self.createTempFile() 93 with BZ2File(self.filename) as bz2f: 94 self.assertEqual(bz2f.read(100), self.TEXT[:100]) 95 96 def testReadLine(self): 97 # "Test BZ2File.readline()" 98 self.createTempFile() 99 with BZ2File(self.filename) as bz2f: 100 self.assertRaises(TypeError, bz2f.readline, None) 101 sio = StringIO(self.TEXT) 102 for line in sio.readlines(): 103 self.assertEqual(bz2f.readline(), line) 104 105 def testReadLines(self): 106 # "Test BZ2File.readlines()" 107 self.createTempFile() 108 with BZ2File(self.filename) as bz2f: 109 self.assertRaises(TypeError, bz2f.readlines, None) 110 sio = StringIO(self.TEXT) 111 self.assertEqual(bz2f.readlines(), sio.readlines()) 112 113 def testIterator(self): 114 # "Test iter(BZ2File)" 115 self.createTempFile() 116 with BZ2File(self.filename) as bz2f: 117 sio = StringIO(self.TEXT) 118 self.assertEqual(list(iter(bz2f)), sio.readlines()) 119 120 def testClosedIteratorDeadlock(self): 121 # "Test that iteration on a closed bz2file releases the lock." 122 # http://bugs.python.org/issue3309 123 self.createTempFile() 124 bz2f = BZ2File(self.filename) 125 bz2f.close() 126 self.assertRaises(ValueError, bz2f.next) 127 # This call will deadlock of the above .next call failed to 128 # release the lock. 129 self.assertRaises(ValueError, bz2f.readlines) 130 131 def testXReadLines(self): 132 # "Test BZ2File.xreadlines()" 133 self.createTempFile() 134 bz2f = BZ2File(self.filename) 135 sio = StringIO(self.TEXT) 136 self.assertEqual(list(bz2f.xreadlines()), sio.readlines()) 137 bz2f.close() 138 139 def testUniversalNewlinesLF(self): 140 # "Test BZ2File.read() with universal newlines (\\n)" 141 self.createTempFile() 142 bz2f = BZ2File(self.filename, "rU") 143 self.assertEqual(bz2f.read(), self.TEXT) 144 self.assertEqual(bz2f.newlines, "\n") 145 bz2f.close() 146 147 def testUniversalNewlinesCRLF(self): 148 # "Test BZ2File.read() with universal newlines (\\r\\n)" 149 self.createTempFile(crlf=1) 150 bz2f = BZ2File(self.filename, "rU") 151 self.assertEqual(bz2f.read(), self.TEXT) 152 self.assertEqual(bz2f.newlines, "\r\n") 153 bz2f.close() 154 155 def testWrite(self): 156 # "Test BZ2File.write()" 157 with BZ2File(self.filename, "w") as bz2f: 158 self.assertRaises(TypeError, bz2f.write) 159 bz2f.write(self.TEXT) 160 with open(self.filename, 'rb') as f: 161 self.assertEqual(self.decompress(f.read()), self.TEXT) 162 163 def testWriteChunks10(self): 164 # "Test BZ2File.write() with chunks of 10 bytes" 165 with BZ2File(self.filename, "w") as bz2f: 166 n = 0 167 while 1: 168 str = self.TEXT[n*10:(n+1)*10] 169 if not str: 170 break 171 bz2f.write(str) 172 n += 1 173 with open(self.filename, 'rb') as f: 174 self.assertEqual(self.decompress(f.read()), self.TEXT) 175 176 def testWriteLines(self): 177 # "Test BZ2File.writelines()" 178 with BZ2File(self.filename, "w") as bz2f: 179 self.assertRaises(TypeError, bz2f.writelines) 180 sio = StringIO(self.TEXT) 181 bz2f.writelines(sio.readlines()) 182 # patch #1535500 183 self.assertRaises(ValueError, bz2f.writelines, ["a"]) 184 with open(self.filename, 'rb') as f: 185 self.assertEqual(self.decompress(f.read()), self.TEXT) 186 187 def testWriteMethodsOnReadOnlyFile(self): 188 with BZ2File(self.filename, "w") as bz2f: 189 bz2f.write("abc") 190 191 with BZ2File(self.filename, "r") as bz2f: 192 self.assertRaises(IOError, bz2f.write, "a") 193 self.assertRaises(IOError, bz2f.writelines, ["a"]) 194 195 def testSeekForward(self): 196 # "Test BZ2File.seek(150, 0)" 197 self.createTempFile() 198 with BZ2File(self.filename) as bz2f: 199 self.assertRaises(TypeError, bz2f.seek) 200 bz2f.seek(150) 201 self.assertEqual(bz2f.read(), self.TEXT[150:]) 202 203 def testSeekBackwards(self): 204 # "Test BZ2File.seek(-150, 1)" 205 self.createTempFile() 206 with BZ2File(self.filename) as bz2f: 207 bz2f.read(500) 208 bz2f.seek(-150, 1) 209 self.assertEqual(bz2f.read(), self.TEXT[500-150:]) 210 211 def testSeekBackwardsFromEnd(self): 212 # "Test BZ2File.seek(-150, 2)" 213 self.createTempFile() 214 with BZ2File(self.filename) as bz2f: 215 bz2f.seek(-150, 2) 216 self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:]) 217 218 def testSeekPostEnd(self): 219 # "Test BZ2File.seek(150000)" 220 self.createTempFile() 221 with BZ2File(self.filename) as bz2f: 222 bz2f.seek(150000) 223 self.assertEqual(bz2f.tell(), len(self.TEXT)) 224 self.assertEqual(bz2f.read(), "") 225 226 def testSeekPostEndTwice(self): 227 # "Test BZ2File.seek(150000) twice" 228 self.createTempFile() 229 with BZ2File(self.filename) as bz2f: 230 bz2f.seek(150000) 231 bz2f.seek(150000) 232 self.assertEqual(bz2f.tell(), len(self.TEXT)) 233 self.assertEqual(bz2f.read(), "") 234 235 def testSeekPreStart(self): 236 # "Test BZ2File.seek(-150, 0)" 237 self.createTempFile() 238 with BZ2File(self.filename) as bz2f: 239 bz2f.seek(-150) 240 self.assertEqual(bz2f.tell(), 0) 241 self.assertEqual(bz2f.read(), self.TEXT) 242 243 def testOpenDel(self): 244 # "Test opening and deleting a file many times" 245 self.createTempFile() 246 for i in xrange(10000): 247 o = BZ2File(self.filename) 248 del o 249 250 def testOpenNonexistent(self): 251 # "Test opening a nonexistent file" 252 self.assertRaises(IOError, BZ2File, "/non/existent") 253 254 def testModeU(self): 255 # Bug #1194181: bz2.BZ2File opened for write with mode "U" 256 self.createTempFile() 257 bz2f = BZ2File(self.filename, "U") 258 bz2f.close() 259 f = file(self.filename) 260 f.seek(0, 2) 261 self.assertEqual(f.tell(), len(self.DATA)) 262 f.close() 263 264 def testBug1191043(self): 265 # readlines() for files containing no newline 266 data = 'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t' 267 with open(self.filename, "wb") as f: 268 f.write(data) 269 with BZ2File(self.filename) as bz2f: 270 lines = bz2f.readlines() 271 self.assertEqual(lines, ['Test']) 272 with BZ2File(self.filename) as bz2f: 273 xlines = list(bz2f.readlines()) 274 self.assertEqual(xlines, ['Test']) 275 276 def testContextProtocol(self): 277 # BZ2File supports the context management protocol 278 f = None 279 with BZ2File(self.filename, "wb") as f: 280 f.write(b"xxx") 281 f = BZ2File(self.filename, "rb") 282 f.close() 283 try: 284 with f: 285 pass 286 except ValueError: 287 pass 288 else: 289 self.fail("__enter__ on a closed file didn't raise an exception") 290 try: 291 with BZ2File(self.filename, "wb") as f: 292 1 // 0 293 except ZeroDivisionError: 294 pass 295 else: 296 self.fail("1 // 0 didn't raise an exception") 297 298 @unittest.skipUnless(threading, 'Threading required for this test.') 299 def testThreading(self): 300 # Using a BZ2File from several threads doesn't deadlock (issue #7205). 301 data = "1" * 2**20 302 nthreads = 10 303 with bz2.BZ2File(self.filename, 'wb') as f: 304 def comp(): 305 for i in range(5): 306 f.write(data) 307 threads = [threading.Thread(target=comp) for i in range(nthreads)] 308 for t in threads: 309 t.start() 310 for t in threads: 311 t.join() 312 313 def testMixedIterationReads(self): 314 # Issue #8397: mixed iteration and reads should be forbidden. 315 with bz2.BZ2File(self.filename, 'wb') as f: 316 # The internal buffer size is hard-wired to 8192 bytes, we must 317 # write out more than that for the test to stop half through 318 # the buffer. 319 f.write(self.TEXT * 100) 320 with bz2.BZ2File(self.filename, 'rb') as f: 321 next(f) 322 self.assertRaises(ValueError, f.read) 323 self.assertRaises(ValueError, f.readline) 324 self.assertRaises(ValueError, f.readlines) 325 326 class BZ2CompressorTest(BaseTest): 327 def testCompress(self): 328 # "Test BZ2Compressor.compress()/flush()" 329 bz2c = BZ2Compressor() 330 self.assertRaises(TypeError, bz2c.compress) 331 data = bz2c.compress(self.TEXT) 332 data += bz2c.flush() 333 self.assertEqual(self.decompress(data), self.TEXT) 334 335 def testCompressChunks10(self): 336 # "Test BZ2Compressor.compress()/flush() with chunks of 10 bytes" 337 bz2c = BZ2Compressor() 338 n = 0 339 data = '' 340 while 1: 341 str = self.TEXT[n*10:(n+1)*10] 342 if not str: 343 break 344 data += bz2c.compress(str) 345 n += 1 346 data += bz2c.flush() 347 self.assertEqual(self.decompress(data), self.TEXT) 348 349 class BZ2DecompressorTest(BaseTest): 350 def test_Constructor(self): 351 self.assertRaises(TypeError, BZ2Decompressor, 42) 352 353 def testDecompress(self): 354 # "Test BZ2Decompressor.decompress()" 355 bz2d = BZ2Decompressor() 356 self.assertRaises(TypeError, bz2d.decompress) 357 text = bz2d.decompress(self.DATA) 358 self.assertEqual(text, self.TEXT) 359 360 def testDecompressChunks10(self): 361 # "Test BZ2Decompressor.decompress() with chunks of 10 bytes" 362 bz2d = BZ2Decompressor() 363 text = '' 364 n = 0 365 while 1: 366 str = self.DATA[n*10:(n+1)*10] 367 if not str: 368 break 369 text += bz2d.decompress(str) 370 n += 1 371 self.assertEqual(text, self.TEXT) 372 373 def testDecompressUnusedData(self): 374 # "Test BZ2Decompressor.decompress() with unused data" 375 bz2d = BZ2Decompressor() 376 unused_data = "this is unused data" 377 text = bz2d.decompress(self.DATA+unused_data) 378 self.assertEqual(text, self.TEXT) 379 self.assertEqual(bz2d.unused_data, unused_data) 380 381 def testEOFError(self): 382 # "Calling BZ2Decompressor.decompress() after EOS must raise EOFError" 383 bz2d = BZ2Decompressor() 384 text = bz2d.decompress(self.DATA) 385 self.assertRaises(EOFError, bz2d.decompress, "anything") 386 387 388 class FuncTest(BaseTest): 389 "Test module functions" 390 391 def testCompress(self): 392 # "Test compress() function" 393 data = bz2.compress(self.TEXT) 394 self.assertEqual(self.decompress(data), self.TEXT) 395 396 def testDecompress(self): 397 # "Test decompress() function" 398 text = bz2.decompress(self.DATA) 399 self.assertEqual(text, self.TEXT) 400 401 def testDecompressEmpty(self): 402 # "Test decompress() function with empty string" 403 text = bz2.decompress("") 404 self.assertEqual(text, "") 405 406 def testDecompressIncomplete(self): 407 # "Test decompress() function with incomplete data" 408 self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10]) 409 410 def test_main(): 411 test_support.run_unittest( 412 BZ2FileTest, 413 BZ2CompressorTest, 414 BZ2DecompressorTest, 415 FuncTest 416 ) 417 test_support.reap_children() 418 419 if __name__ == '__main__': 420 test_main() 421 422 # vim:ts=4:sw=4 423
