| #!/usr/bin/env python |
| from test import test_support |
| from test.test_support import TESTFN, _4G, bigmemtest, import_module, findfile |
| |
| import unittest |
| from cStringIO import StringIO |
| import os |
| import subprocess |
| import sys |
| |
| try: |
| import threading |
| except ImportError: |
| threading = None |
| |
| bz2 = import_module('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' |
| EMPTY_DATA = 'BZh9\x17rE8P\x90\x00\x00\x00\x00' |
| |
| if has_cmdline_bunzip2: |
| def decompress(self, data): |
| pop = subprocess.Popen("bunzip2", shell=True, |
| stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT) |
| pop.stdin.write(data) |
| pop.stdin.close() |
| ret = pop.stdout.read() |
| pop.stdout.close() |
| if pop.wait() != 0: |
| ret = bz2.decompress(data) |
| return ret |
| |
| else: |
| # bunzip2 isn't available to run on Windows. |
| 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): |
| with open(self.filename, "wb") as f: |
| if crlf: |
| data = self.DATA_CRLF |
| else: |
| data = self.DATA |
| f.write(data) |
| |
| def testRead(self): |
| # "Test BZ2File.read()" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertRaises(TypeError, bz2f.read, None) |
| self.assertEqual(bz2f.read(), self.TEXT) |
| |
| def testRead0(self): |
| # Test BBZ2File.read(0)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertRaises(TypeError, bz2f.read, None) |
| self.assertEqual(bz2f.read(0), "") |
| |
| def testReadChunk10(self): |
| # "Test BZ2File.read() in chunks of 10 bytes" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| text = '' |
| while 1: |
| str = bz2f.read(10) |
| if not str: |
| break |
| text += str |
| self.assertEqual(text, self.TEXT) |
| |
| def testRead100(self): |
| # "Test BZ2File.read(100)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertEqual(bz2f.read(100), self.TEXT[:100]) |
| |
| def testReadLine(self): |
| # "Test BZ2File.readline()" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertRaises(TypeError, bz2f.readline, None) |
| sio = StringIO(self.TEXT) |
| for line in sio.readlines(): |
| self.assertEqual(bz2f.readline(), line) |
| |
| def testReadLines(self): |
| # "Test BZ2File.readlines()" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertRaises(TypeError, bz2f.readlines, None) |
| sio = StringIO(self.TEXT) |
| self.assertEqual(bz2f.readlines(), sio.readlines()) |
| |
| def testIterator(self): |
| # "Test iter(BZ2File)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| sio = StringIO(self.TEXT) |
| self.assertEqual(list(iter(bz2f)), sio.readlines()) |
| |
| def testClosedIteratorDeadlock(self): |
| # "Test that iteration on a closed bz2file releases the lock." |
| # http://bugs.python.org/issue3309 |
| self.createTempFile() |
| bz2f = BZ2File(self.filename) |
| bz2f.close() |
| self.assertRaises(ValueError, bz2f.next) |
| # This call will deadlock of the above .next call failed to |
| # release the lock. |
| self.assertRaises(ValueError, bz2f.readlines) |
| |
| 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()" |
| with BZ2File(self.filename, "w") as bz2f: |
| self.assertRaises(TypeError, bz2f.write) |
| bz2f.write(self.TEXT) |
| with open(self.filename, 'rb') as f: |
| self.assertEqual(self.decompress(f.read()), self.TEXT) |
| |
| def testWriteChunks10(self): |
| # "Test BZ2File.write() with chunks of 10 bytes" |
| with BZ2File(self.filename, "w") as bz2f: |
| n = 0 |
| while 1: |
| str = self.TEXT[n*10:(n+1)*10] |
| if not str: |
| break |
| bz2f.write(str) |
| n += 1 |
| with open(self.filename, 'rb') as f: |
| self.assertEqual(self.decompress(f.read()), self.TEXT) |
| |
| def testWriteLines(self): |
| # "Test BZ2File.writelines()" |
| with BZ2File(self.filename, "w") as bz2f: |
| self.assertRaises(TypeError, bz2f.writelines) |
| sio = StringIO(self.TEXT) |
| bz2f.writelines(sio.readlines()) |
| # patch #1535500 |
| self.assertRaises(ValueError, bz2f.writelines, ["a"]) |
| with open(self.filename, 'rb') as f: |
| self.assertEqual(self.decompress(f.read()), self.TEXT) |
| |
| def testWriteMethodsOnReadOnlyFile(self): |
| with BZ2File(self.filename, "w") as bz2f: |
| bz2f.write("abc") |
| |
| with BZ2File(self.filename, "r") as bz2f: |
| self.assertRaises(IOError, bz2f.write, "a") |
| self.assertRaises(IOError, bz2f.writelines, ["a"]) |
| |
| def testSeekForward(self): |
| # "Test BZ2File.seek(150, 0)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| self.assertRaises(TypeError, bz2f.seek) |
| bz2f.seek(150) |
| self.assertEqual(bz2f.read(), self.TEXT[150:]) |
| |
| def testSeekBackwards(self): |
| # "Test BZ2File.seek(-150, 1)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| bz2f.read(500) |
| bz2f.seek(-150, 1) |
| self.assertEqual(bz2f.read(), self.TEXT[500-150:]) |
| |
| def testSeekBackwardsFromEnd(self): |
| # "Test BZ2File.seek(-150, 2)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| bz2f.seek(-150, 2) |
| self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:]) |
| |
| def testSeekPostEnd(self): |
| # "Test BZ2File.seek(150000)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| bz2f.seek(150000) |
| self.assertEqual(bz2f.tell(), len(self.TEXT)) |
| self.assertEqual(bz2f.read(), "") |
| |
| def testSeekPostEndTwice(self): |
| # "Test BZ2File.seek(150000) twice" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| bz2f.seek(150000) |
| bz2f.seek(150000) |
| self.assertEqual(bz2f.tell(), len(self.TEXT)) |
| self.assertEqual(bz2f.read(), "") |
| |
| def testSeekPreStart(self): |
| # "Test BZ2File.seek(-150, 0)" |
| self.createTempFile() |
| with BZ2File(self.filename) as bz2f: |
| bz2f.seek(-150) |
| self.assertEqual(bz2f.tell(), 0) |
| self.assertEqual(bz2f.read(), self.TEXT) |
| |
| 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' |
| with open(self.filename, "wb") as f: |
| f.write(data) |
| with BZ2File(self.filename) as bz2f: |
| lines = bz2f.readlines() |
| self.assertEqual(lines, ['Test']) |
| with BZ2File(self.filename) as bz2f: |
| xlines = list(bz2f.readlines()) |
| self.assertEqual(xlines, ['Test']) |
| |
| def testContextProtocol(self): |
| # BZ2File supports the context management protocol |
| f = None |
| with BZ2File(self.filename, "wb") as f: |
| f.write(b"xxx") |
| 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): |
| # Using a BZ2File from several threads doesn't deadlock (issue #7205). |
| data = "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 testMixedIterationReads(self): |
| # Issue #8397: mixed iteration and reads should be forbidden. |
| with bz2.BZ2File(self.filename, 'wb') as f: |
| # The internal buffer size is hard-wired to 8192 bytes, we must |
| # write out more than that for the test to stop half through |
| # the buffer. |
| f.write(self.TEXT * 100) |
| with bz2.BZ2File(self.filename, 'rb') as f: |
| next(f) |
| self.assertRaises(ValueError, f.read) |
| self.assertRaises(ValueError, f.readline) |
| self.assertRaises(ValueError, f.readlines) |
| |
| 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 testCompressEmptyString(self): |
| # "Test BZ2Compressor.compress()/flush() of empty string" |
| bz2c = BZ2Compressor() |
| data = bz2c.compress('') |
| data += bz2c.flush() |
| self.assertEqual(data, self.EMPTY_DATA) |
| |
| 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) |
| |
| @bigmemtest(_4G, memuse=1.25) |
| def testBigmem(self, size): |
| text = "a" * size |
| bz2c = bz2.BZ2Compressor() |
| data = bz2c.compress(text) + bz2c.flush() |
| del text |
| text = self.decompress(data) |
| self.assertEqual(len(text), size) |
| self.assertEqual(text.strip("a"), "") |
| |
| |
| 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") |
| self.assertRaises(EOFError, bz2d.decompress, "") |
| |
| @bigmemtest(_4G, memuse=1.25) |
| def testBigmem(self, size): |
| # Issue #14398: decompression fails when output data is >=2GB. |
| if size < _4G: |
| self.skipTest("Test needs 5GB of memory to run.") |
| compressed = bz2.compress("a" * _4G) |
| text = bz2.BZ2Decompressor().decompress(compressed) |
| self.assertEqual(len(text), _4G) |
| self.assertEqual(text.strip("a"), "") |
| |
| |
| 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 testCompressEmptyString(self): |
| # "Test compress() of empty string" |
| text = bz2.compress('') |
| self.assertEqual(text, self.EMPTY_DATA) |
| |
| 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 testDecompressToEmptyString(self): |
| # "Test decompress() of minimal bz2 data to empty string" |
| text = bz2.decompress(self.EMPTY_DATA) |
| self.assertEqual(text, '') |
| |
| def testDecompressIncomplete(self): |
| # "Test decompress() function with incomplete data" |
| self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10]) |
| |
| @bigmemtest(_4G, memuse=1.25) |
| def testCompressBigmem(self, size): |
| text = "a" * size |
| data = bz2.compress(text) |
| del text |
| text = self.decompress(data) |
| self.assertEqual(len(text), size) |
| self.assertEqual(text.strip("a"), "") |
| |
| @bigmemtest(_4G, memuse=1.25) |
| def testDecompressBigmem(self, size): |
| # Issue #14398: decompression fails when output data is >=2GB. |
| if size < _4G: |
| self.skipTest("Test needs 5GB of memory to run.") |
| compressed = bz2.compress("a" * _4G) |
| text = bz2.decompress(compressed) |
| self.assertEqual(len(text), _4G) |
| self.assertEqual(text.strip("a"), "") |
| |
| 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 |
