1 from test import test_support as support 2 from test.test_support import TESTFN, _4G, bigmemtest, import_module, findfile 3 4 import unittest 5 from cStringIO import StringIO 6 import os 7 import subprocess 8 import sys 9 10 try: 11 import threading 12 except ImportError: 13 threading = None 14 15 bz2 = import_module('bz2') 16 from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor 17 18 has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx", "riscos") 19 20 class BaseTest(unittest.TestCase): 21 "Base for other testcases." 22 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' 23 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`' 24 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' 25 EMPTY_DATA = 'BZh9\x17rE8P\x90\x00\x00\x00\x00' 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 47 class BZ2FileTest(BaseTest): 48 "Test BZ2File type miscellaneous methods." 49 50 def setUp(self): 51 self.filename = TESTFN 52 53 def tearDown(self): 54 if os.path.isfile(self.filename): 55 os.unlink(self.filename) 56 57 def createTempFile(self, crlf=0): 58 with open(self.filename, "wb") as f: 59 if crlf: 60 data = self.DATA_CRLF 61 else: 62 data = self.DATA 63 f.write(data) 64 65 def testRead(self): 66 # "Test BZ2File.read()" 67 self.createTempFile() 68 with BZ2File(self.filename) as bz2f: 69 self.assertRaises(TypeError, bz2f.read, None) 70 self.assertEqual(bz2f.read(), self.TEXT) 71 72 def testRead0(self): 73 # Test BBZ2File.read(0)" 74 self.createTempFile() 75 with BZ2File(self.filename) as bz2f: 76 self.assertRaises(TypeError, bz2f.read, None) 77 self.assertEqual(bz2f.read(0), "") 78 79 def testReadChunk10(self): 80 # "Test BZ2File.read() in chunks of 10 bytes" 81 self.createTempFile() 82 with BZ2File(self.filename) as bz2f: 83 text = '' 84 while 1: 85 str = bz2f.read(10) 86 if not str: 87 break 88 text += str 89 self.assertEqual(text, self.TEXT) 90 91 def testRead100(self): 92 # "Test BZ2File.read(100)" 93 self.createTempFile() 94 with BZ2File(self.filename) as bz2f: 95 self.assertEqual(bz2f.read(100), self.TEXT[:100]) 96 97 def testReadLine(self): 98 # "Test BZ2File.readline()" 99 self.createTempFile() 100 with BZ2File(self.filename) as bz2f: 101 self.assertRaises(TypeError, bz2f.readline, None) 102 sio = StringIO(self.TEXT) 103 for line in sio.readlines(): 104 self.assertEqual(bz2f.readline(), line) 105 106 def testReadLines(self): 107 # "Test BZ2File.readlines()" 108 self.createTempFile() 109 with BZ2File(self.filename) as bz2f: 110 self.assertRaises(TypeError, bz2f.readlines, None) 111 sio = StringIO(self.TEXT) 112 self.assertEqual(bz2f.readlines(), sio.readlines()) 113 114 def testIterator(self): 115 # "Test iter(BZ2File)" 116 self.createTempFile() 117 with BZ2File(self.filename) as bz2f: 118 sio = StringIO(self.TEXT) 119 self.assertEqual(list(iter(bz2f)), sio.readlines()) 120 121 def testClosedIteratorDeadlock(self): 122 # "Test that iteration on a closed bz2file releases the lock." 123 # http://bugs.python.org/issue3309 124 self.createTempFile() 125 bz2f = BZ2File(self.filename) 126 bz2f.close() 127 self.assertRaises(ValueError, bz2f.next) 128 # This call will deadlock of the above .next call failed to 129 # release the lock. 130 self.assertRaises(ValueError, bz2f.readlines) 131 132 def testXReadLines(self): 133 # "Test BZ2File.xreadlines()" 134 self.createTempFile() 135 bz2f = BZ2File(self.filename) 136 sio = StringIO(self.TEXT) 137 self.assertEqual(list(bz2f.xreadlines()), sio.readlines()) 138 bz2f.close() 139 140 def testUniversalNewlinesLF(self): 141 # "Test BZ2File.read() with universal newlines (\\n)" 142 self.createTempFile() 143 bz2f = BZ2File(self.filename, "rU") 144 self.assertEqual(bz2f.read(), self.TEXT) 145 self.assertEqual(bz2f.newlines, "\n") 146 bz2f.close() 147 148 def testUniversalNewlinesCRLF(self): 149 # "Test BZ2File.read() with universal newlines (\\r\\n)" 150 self.createTempFile(crlf=1) 151 bz2f = BZ2File(self.filename, "rU") 152 self.assertEqual(bz2f.read(), self.TEXT) 153 self.assertEqual(bz2f.newlines, "\r\n") 154 bz2f.close() 155 156 def testWrite(self): 157 # "Test BZ2File.write()" 158 with BZ2File(self.filename, "w") as bz2f: 159 self.assertRaises(TypeError, bz2f.write) 160 bz2f.write(self.TEXT) 161 with open(self.filename, 'rb') as f: 162 self.assertEqual(self.decompress(f.read()), self.TEXT) 163 164 def testWriteChunks10(self): 165 # "Test BZ2File.write() with chunks of 10 bytes" 166 with BZ2File(self.filename, "w") as bz2f: 167 n = 0 168 while 1: 169 str = self.TEXT[n*10:(n+1)*10] 170 if not str: 171 break 172 bz2f.write(str) 173 n += 1 174 with open(self.filename, 'rb') as f: 175 self.assertEqual(self.decompress(f.read()), self.TEXT) 176 177 def testWriteLines(self): 178 # "Test BZ2File.writelines()" 179 with BZ2File(self.filename, "w") as bz2f: 180 self.assertRaises(TypeError, bz2f.writelines) 181 sio = StringIO(self.TEXT) 182 bz2f.writelines(sio.readlines()) 183 # patch #1535500 184 self.assertRaises(ValueError, bz2f.writelines, ["a"]) 185 with open(self.filename, 'rb') as f: 186 self.assertEqual(self.decompress(f.read()), self.TEXT) 187 188 def testWriteMethodsOnReadOnlyFile(self): 189 with BZ2File(self.filename, "w") as bz2f: 190 bz2f.write("abc") 191 192 with BZ2File(self.filename, "r") as bz2f: 193 self.assertRaises(IOError, bz2f.write, "a") 194 self.assertRaises(IOError, bz2f.writelines, ["a"]) 195 196 def testSeekForward(self): 197 # "Test BZ2File.seek(150, 0)" 198 self.createTempFile() 199 with BZ2File(self.filename) as bz2f: 200 self.assertRaises(TypeError, bz2f.seek) 201 bz2f.seek(150) 202 self.assertEqual(bz2f.read(), self.TEXT[150:]) 203 204 def testSeekBackwards(self): 205 # "Test BZ2File.seek(-150, 1)" 206 self.createTempFile() 207 with BZ2File(self.filename) as bz2f: 208 bz2f.read(500) 209 bz2f.seek(-150, 1) 210 self.assertEqual(bz2f.read(), self.TEXT[500-150:]) 211 212 def testSeekBackwardsFromEnd(self): 213 # "Test BZ2File.seek(-150, 2)" 214 self.createTempFile() 215 with BZ2File(self.filename) as bz2f: 216 bz2f.seek(-150, 2) 217 self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:]) 218 219 def testSeekPostEnd(self): 220 # "Test BZ2File.seek(150000)" 221 self.createTempFile() 222 with BZ2File(self.filename) as bz2f: 223 bz2f.seek(150000) 224 self.assertEqual(bz2f.tell(), len(self.TEXT)) 225 self.assertEqual(bz2f.read(), "") 226 227 def testSeekPostEndTwice(self): 228 # "Test BZ2File.seek(150000) twice" 229 self.createTempFile() 230 with BZ2File(self.filename) as bz2f: 231 bz2f.seek(150000) 232 bz2f.seek(150000) 233 self.assertEqual(bz2f.tell(), len(self.TEXT)) 234 self.assertEqual(bz2f.read(), "") 235 236 def testSeekPreStart(self): 237 # "Test BZ2File.seek(-150, 0)" 238 self.createTempFile() 239 with BZ2File(self.filename) as bz2f: 240 bz2f.seek(-150) 241 self.assertEqual(bz2f.tell(), 0) 242 self.assertEqual(bz2f.read(), self.TEXT) 243 244 def testOpenDel(self): 245 # "Test opening and deleting a file many times" 246 self.createTempFile() 247 for i in xrange(10000): 248 o = BZ2File(self.filename) 249 del o 250 251 def testOpenNonexistent(self): 252 # "Test opening a nonexistent file" 253 self.assertRaises(IOError, BZ2File, "/non/existent") 254 255 def testModeU(self): 256 # Bug #1194181: bz2.BZ2File opened for write with mode "U" 257 self.createTempFile() 258 bz2f = BZ2File(self.filename, "U") 259 bz2f.close() 260 f = file(self.filename) 261 f.seek(0, 2) 262 self.assertEqual(f.tell(), len(self.DATA)) 263 f.close() 264 265 def testBug1191043(self): 266 # readlines() for files containing no newline 267 data = 'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t' 268 with open(self.filename, "wb") as f: 269 f.write(data) 270 with BZ2File(self.filename) as bz2f: 271 lines = bz2f.readlines() 272 self.assertEqual(lines, ['Test']) 273 with BZ2File(self.filename) as bz2f: 274 xlines = list(bz2f.readlines()) 275 self.assertEqual(xlines, ['Test']) 276 277 def testContextProtocol(self): 278 # BZ2File supports the context management protocol 279 f = None 280 with BZ2File(self.filename, "wb") as f: 281 f.write(b"xxx") 282 f = BZ2File(self.filename, "rb") 283 f.close() 284 try: 285 with f: 286 pass 287 except ValueError: 288 pass 289 else: 290 self.fail("__enter__ on a closed file didn't raise an exception") 291 try: 292 with BZ2File(self.filename, "wb") as f: 293 1 // 0 294 except ZeroDivisionError: 295 pass 296 else: 297 self.fail("1 // 0 didn't raise an exception") 298 299 @unittest.skipUnless(threading, 'Threading required for this test.') 300 def testThreading(self): 301 # Using a BZ2File from several threads doesn't deadlock (issue #7205). 302 data = "1" * 2**20 303 nthreads = 10 304 with bz2.BZ2File(self.filename, 'wb') as f: 305 def comp(): 306 for i in range(5): 307 f.write(data) 308 threads = [threading.Thread(target=comp) for i in range(nthreads)] 309 with support.start_threads(threads): 310 pass 311 312 def testMixedIterationReads(self): 313 # Issue #8397: mixed iteration and reads should be forbidden. 314 with bz2.BZ2File(self.filename, 'wb') as f: 315 # The internal buffer size is hard-wired to 8192 bytes, we must 316 # write out more than that for the test to stop half through 317 # the buffer. 318 f.write(self.TEXT * 100) 319 with bz2.BZ2File(self.filename, 'rb') as f: 320 next(f) 321 self.assertRaises(ValueError, f.read) 322 self.assertRaises(ValueError, f.readline) 323 self.assertRaises(ValueError, f.readlines) 324 325 @unittest.skipIf(sys.platform == 'win32', 326 'test depends on being able to delete a still-open file,' 327 ' which is not possible on Windows') 328 def testInitNonExistentFile(self): 329 # Issue #19878: Should not segfault when __init__ with non-existent 330 # file for the second time. 331 self.createTempFile() 332 # Test close(): 333 with BZ2File(self.filename, "wb") as f: 334 self.assertRaises(IOError, f.__init__, "non-existent-file") 335 # Test object deallocation without call to close(): 336 f = bz2.BZ2File(self.filename) 337 self.assertRaises(IOError, f.__init__, "non-existent-file") 338 del f 339 340 class BZ2CompressorTest(BaseTest): 341 def testCompress(self): 342 # "Test BZ2Compressor.compress()/flush()" 343 bz2c = BZ2Compressor() 344 self.assertRaises(TypeError, bz2c.compress) 345 data = bz2c.compress(self.TEXT) 346 data += bz2c.flush() 347 self.assertEqual(self.decompress(data), self.TEXT) 348 349 def testCompressEmptyString(self): 350 # "Test BZ2Compressor.compress()/flush() of empty string" 351 bz2c = BZ2Compressor() 352 data = bz2c.compress('') 353 data += bz2c.flush() 354 self.assertEqual(data, self.EMPTY_DATA) 355 356 def testCompressChunks10(self): 357 # "Test BZ2Compressor.compress()/flush() with chunks of 10 bytes" 358 bz2c = BZ2Compressor() 359 n = 0 360 data = '' 361 while 1: 362 str = self.TEXT[n*10:(n+1)*10] 363 if not str: 364 break 365 data += bz2c.compress(str) 366 n += 1 367 data += bz2c.flush() 368 self.assertEqual(self.decompress(data), self.TEXT) 369 370 @bigmemtest(_4G, memuse=1.25) 371 def testBigmem(self, size): 372 text = "a" * size 373 bz2c = bz2.BZ2Compressor() 374 data = bz2c.compress(text) + bz2c.flush() 375 del text 376 text = self.decompress(data) 377 self.assertEqual(len(text), size) 378 self.assertEqual(text.strip("a"), "") 379 380 381 class BZ2DecompressorTest(BaseTest): 382 def test_Constructor(self): 383 self.assertRaises(TypeError, BZ2Decompressor, 42) 384 385 def testDecompress(self): 386 # "Test BZ2Decompressor.decompress()" 387 bz2d = BZ2Decompressor() 388 self.assertRaises(TypeError, bz2d.decompress) 389 text = bz2d.decompress(self.DATA) 390 self.assertEqual(text, self.TEXT) 391 392 def testDecompressChunks10(self): 393 # "Test BZ2Decompressor.decompress() with chunks of 10 bytes" 394 bz2d = BZ2Decompressor() 395 text = '' 396 n = 0 397 while 1: 398 str = self.DATA[n*10:(n+1)*10] 399 if not str: 400 break 401 text += bz2d.decompress(str) 402 n += 1 403 self.assertEqual(text, self.TEXT) 404 405 def testDecompressUnusedData(self): 406 # "Test BZ2Decompressor.decompress() with unused data" 407 bz2d = BZ2Decompressor() 408 unused_data = "this is unused data" 409 text = bz2d.decompress(self.DATA+unused_data) 410 self.assertEqual(text, self.TEXT) 411 self.assertEqual(bz2d.unused_data, unused_data) 412 413 def testEOFError(self): 414 # "Calling BZ2Decompressor.decompress() after EOS must raise EOFError" 415 bz2d = BZ2Decompressor() 416 text = bz2d.decompress(self.DATA) 417 self.assertRaises(EOFError, bz2d.decompress, "anything") 418 self.assertRaises(EOFError, bz2d.decompress, "") 419 420 @bigmemtest(_4G, memuse=1.25) 421 def testBigmem(self, size): 422 # Issue #14398: decompression fails when output data is >=2GB. 423 if size < _4G: 424 self.skipTest("Test needs 5GB of memory to run.") 425 compressed = bz2.compress("a" * _4G) 426 text = bz2.BZ2Decompressor().decompress(compressed) 427 self.assertEqual(len(text), _4G) 428 self.assertEqual(text.strip("a"), "") 429 430 431 class FuncTest(BaseTest): 432 "Test module functions" 433 434 def testCompress(self): 435 # "Test compress() function" 436 data = bz2.compress(self.TEXT) 437 self.assertEqual(self.decompress(data), self.TEXT) 438 439 def testCompressEmptyString(self): 440 # "Test compress() of empty string" 441 text = bz2.compress('') 442 self.assertEqual(text, self.EMPTY_DATA) 443 444 def testDecompress(self): 445 # "Test decompress() function" 446 text = bz2.decompress(self.DATA) 447 self.assertEqual(text, self.TEXT) 448 449 def testDecompressEmpty(self): 450 # "Test decompress() function with empty string" 451 text = bz2.decompress("") 452 self.assertEqual(text, "") 453 454 def testDecompressToEmptyString(self): 455 # "Test decompress() of minimal bz2 data to empty string" 456 text = bz2.decompress(self.EMPTY_DATA) 457 self.assertEqual(text, '') 458 459 def testDecompressIncomplete(self): 460 # "Test decompress() function with incomplete data" 461 self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10]) 462 463 @bigmemtest(_4G, memuse=1.25) 464 def testCompressBigmem(self, size): 465 text = "a" * size 466 data = bz2.compress(text) 467 del text 468 text = self.decompress(data) 469 self.assertEqual(len(text), size) 470 self.assertEqual(text.strip("a"), "") 471 472 @bigmemtest(_4G, memuse=1.25) 473 def testDecompressBigmem(self, size): 474 # Issue #14398: decompression fails when output data is >=2GB. 475 if size < _4G: 476 self.skipTest("Test needs 5GB of memory to run.") 477 compressed = bz2.compress("a" * _4G) 478 text = bz2.decompress(compressed) 479 self.assertEqual(len(text), _4G) 480 self.assertEqual(text.strip("a"), "") 481 482 def test_main(): 483 support.run_unittest( 484 BZ2FileTest, 485 BZ2CompressorTest, 486 BZ2DecompressorTest, 487 FuncTest 488 ) 489 support.reap_children() 490 491 if __name__ == '__main__': 492 test_main() 493 494 # vim:ts=4:sw=4 495
